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d313852 Steve French 12 June 2020, 03:43:01 UTC smb311: add support for using info level for posix extensions query Adds calls to the newer info level for query info using SMB3.1.1 posix extensions. The remaining two places that call the older query info (non-SMB3.1.1 POSIX) require passing in the fid and can be updated in a later patch. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com> 12 June 2020, 13:54:12 UTC
790434f Steve French 12 June 2020, 03:28:49 UTC smb311: Add support for lookup with posix extensions query info Improve support for lookup when using SMB3.1.1 posix mounts. Use new info level 100 (posix query info) Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com> 12 June 2020, 11:21:19 UTC
b1bc187 Steve French 12 June 2020, 01:23:38 UTC smb311: Add support for SMB311 query info (non-compounded) Add worker function for non-compounded SMB3.1.1 POSIX Extensions query info. This is needed for revalidate of root (cached) directory for example. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com> 12 June 2020, 11:21:06 UTC
6a5f659 Steve French 12 June 2020, 00:25:47 UTC SMB311: Add support for query info using posix extensions (level 100) Adds support for better query info on dentry revalidation (using the SMB3.1.1 POSIX extensions level 100). Followon patch will add support for translating the UID/GID from the SID and also will add support for using the posix query info on lookup. Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com> 12 June 2020, 11:20:38 UTC
ebf5744 Namjae Jeon 11 June 2020, 02:21:19 UTC smb3: add indatalen that can be a non-zero value to calculation of credit charge in smb2 ioctl Some of tests in xfstests failed with cifsd kernel server since commit e80ddeb2f70e. cifsd kernel server validates credit charge from client by calculating it base on max((InputCount + OutputCount) and (MaxInputResponse + MaxOutputResponse)) according to specification. MS-SMB2 specification describe credit charge calculation of smb2 ioctl : If Connection.SupportsMultiCredit is TRUE, the server MUST validate CreditCharge based on the maximum of (InputCount + OutputCount) and (MaxInputResponse + MaxOutputResponse), as specified in section 3.3.5.2.5. If the validation fails, it MUST fail the IOCTL request with STATUS_INVALID_PARAMETER. This patch add indatalen that can be a non-zero value to calculation of credit charge in SMB2_ioctl_init(). Fixes: e80ddeb2f70e ("smb3: fix incorrect number of credits when ioctl MaxOutputResponse > 64K") Cc: Stable <stable@vger.kernel.org> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Cc: Steve French <smfrench@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com> 12 June 2020, 11:20:17 UTC
7866c17 Steve French 10 June 2020, 00:50:40 UTC smb3: fix typo in mount options displayed in /proc/mounts Missing the final 's' in "max_channels" mount option when displayed in /proc/mounts (or by mount command) CC: Stable <stable@vger.kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Shyam Prasad N <nspmangalore@gmail.com> 10 June 2020, 17:05:15 UTC
0b0430c Kenneth D'souza 09 June 2020, 04:42:10 UTC cifs: Add get_security_type_str function to return sec type. This code is more organized and robust. Signed-off-by: Kenneth D'souza <kdsouza@redhat.com> Signed-off-by: Roberto Bergantinos Corpas <rbergant@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> 09 June 2020, 04:57:21 UTC
5865985 Steve French 05 June 2020, 22:19:46 UTC smb3: extend fscache mount volume coherency check It is better to check volume id and creation time, not just the root inode number to verify if the volume has changed when remounting. Reviewed-by: David Howells <dhowells@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> 06 June 2020, 16:16:25 UTC
3803d5e Linus Torvalds 05 June 2020, 23:40:53 UTC Merge tag '5.8-rc-smb3-fixes-part-1' of git://git.samba.org/sfrench/cifs-2.6 Pull cifs updates from Steve French: "22 changesets, 2 for stable. Includes big performance improvement for large i/o when using multichannel, also includes DFS fixes" * tag '5.8-rc-smb3-fixes-part-1' of git://git.samba.org/sfrench/cifs-2.6: (22 commits) cifs: update internal module version number cifs: multichannel: try to rebind when reconnecting a channel cifs: multichannel: use pointer for binding channel smb3: remove static checker warning cifs: multichannel: move channel selection above transport layer cifs: multichannel: always zero struct cifs_io_parms cifs: dump Security Type info in DebugData smb3: fix incorrect number of credits when ioctl MaxOutputResponse > 64K smb3: default to minimum of two channels when multichannel specified cifs: multichannel: move channel selection in function cifs: fix minor typos in comments and log messages smb3: minor update to compression header definitions cifs: minor fix to two debug messages cifs: Standardize logging output smb3: Add new parm "nodelete" cifs: move some variables off the stack in smb2_ioctl_query_info cifs: reduce stack use in smb2_compound_op cifs: get rid of unused parameter in reconn_setup_dfs_targets() cifs: handle hostnames that resolve to same ip in failover cifs: set up next DFS target before generic_ip_connect() ... 05 June 2020, 23:40:53 UTC
9daa0a2 Linus Torvalds 05 June 2020, 23:26:36 UTC Merge tag 'afs-next-20200604' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs Pull AFS updates from David Howells: "There's some core VFS changes which affect a couple of filesystems: - Make the inode hash table RCU safe and providing some RCU-safe accessor functions. The search can then be done without taking the inode_hash_lock. Care must be taken because the object may be being deleted and no wait is made. - Allow iunique() to avoid taking the inode_hash_lock. - Allow AFS's callback processing to avoid taking the inode_hash_lock when using the inode table to find an inode to notify. - Improve Ext4's time updating. Konstantin Khlebnikov said "For now, I've plugged this issue with try-lock in ext4 lazy time update. This solution is much better." Then there's a set of changes to make a number of improvements to the AFS driver: - Improve callback (ie. third party change notification) processing by: (a) Relying more on the fact we're doing this under RCU and by using fewer locks. This makes use of the RCU-based inode searching outlined above. (b) Moving to keeping volumes in a tree indexed by volume ID rather than a flat list. (c) Making the server and volume records logically part of the cell. This means that a server record now points directly at the cell and the tree of volumes is there. This removes an N:M mapping table, simplifying things. - Improve keeping NAT or firewall channels open for the server callbacks to reach the client by actively polling the fileserver on a timed basis, instead of only doing it when we have an operation to process. - Improving detection of delayed or lost callbacks by including the parent directory in the list of file IDs to be queried when doing a bulk status fetch from lookup. We can then check to see if our copy of the directory has changed under us without us getting notified. - Determine aliasing of cells (such as a cell that is pointed to be a DNS alias). This allows us to avoid having ambiguity due to apparently different cells using the same volume and file servers. - Improve the fileserver rotation to do more probing when it detects that all of the addresses to a server are listed as non-responsive. It's possible that an address that previously stopped responding has become responsive again. Beyond that, lay some foundations for making some calls asynchronous: - Turn the fileserver cursor struct into a general operation struct and hang the parameters off of that rather than keeping them in local variables and hang results off of that rather than the call struct. - Implement some general operation handling code and simplify the callers of operations that affect a volume or a volume component (such as a file). Most of the operation is now done by core code. - Operations are supplied with a table of operations to issue different variants of RPCs and to manage the completion, where all the required data is held in the operation object, thereby allowing these to be called from a workqueue. - Put the standard "if (begin), while(select), call op, end" sequence into a canned function that just emulates the current behaviour for now. There are also some fixes interspersed: - Don't let the EACCES from ICMP6 mapping reach the user as such, since it's confusing as to whether it's a filesystem error. Convert it to EHOSTUNREACH. - Don't use the epoch value acquired through probing a server. If we have two servers with the same UUID but in different cells, it's hard to draw conclusions from them having different epoch values. - Don't interpret the argument to the CB.ProbeUuid RPC as a fileserver UUID and look up a fileserver from it. - Deal with servers in different cells having the same UUIDs. In the event that a CB.InitCallBackState3 RPC is received, we have to break the callback promises for every server record matching that UUID. - Don't let afs_statfs return values that go below 0. - Don't use running fileserver probe state to make server selection and address selection decisions on. Only make decisions on final state as the running state is cleared at the start of probing" Acked-by: Al Viro <viro@zeniv.linux.org.uk> (fs/inode.c part) * tag 'afs-next-20200604' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (27 commits) afs: Adjust the fileserver rotation algorithm to reprobe/retry more quickly afs: Show more a bit more server state in /proc/net/afs/servers afs: Don't use probe running state to make decisions outside probe code afs: Fix afs_statfs() to not let the values go below zero afs: Fix the by-UUID server tree to allow servers with the same UUID afs: Reorganise volume and server trees to be rooted on the cell afs: Add a tracepoint to track the lifetime of the afs_volume struct afs: Detect cell aliases 3 - YFS Cells with a canonical cell name op afs: Detect cell aliases 2 - Cells with no root volumes afs: Detect cell aliases 1 - Cells with root volumes afs: Implement client support for the YFSVL.GetCellName RPC op afs: Retain more of the VLDB record for alias detection afs: Fix handling of CB.ProbeUuid cache manager op afs: Don't get epoch from a server because it may be ambiguous afs: Build an abstraction around an "operation" concept afs: Rename struct afs_fs_cursor to afs_operation afs: Remove the error argument from afs_protocol_error() afs: Set error flag rather than return error from file status decode afs: Make callback processing more efficient. afs: Show more information in /proc/net/afs/servers ... 05 June 2020, 23:26:36 UTC
0b166a5 Linus Torvalds 05 June 2020, 23:19:28 UTC Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "A lot of bug fixes and cleanups for ext4, including: - Fix performance problems found in dioread_nolock now that it is the default, caused by transaction leaks. - Clean up fiemap handling in ext4 - Clean up and refactor multiple block allocator (mballoc) code - Fix a problem with mballoc with a smaller file systems running out of blocks because they couldn't properly use blocks that had been reserved by inode preallocation. - Fixed a race in ext4_sync_parent() versus rename() - Simplify the error handling in the extent manipulation code - Make sure all metadata I/O errors are felected to ext4_ext_dirty()'s and ext4_make_inode_dirty()'s callers. - Avoid passing an error pointer to brelse in ext4_xattr_set() - Fix race which could result to freeing an inode on the dirty last in data=journal mode. - Fix refcount handling if ext4_iget() fails - Fix a crash in generic/019 caused by a corrupted extent node" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (58 commits) ext4: avoid unnecessary transaction starts during writeback ext4: don't block for O_DIRECT if IOCB_NOWAIT is set ext4: remove the access_ok() check in ext4_ioctl_get_es_cache fs: remove the access_ok() check in ioctl_fiemap fs: handle FIEMAP_FLAG_SYNC in fiemap_prep fs: move fiemap range validation into the file systems instances iomap: fix the iomap_fiemap prototype fs: move the fiemap definitions out of fs.h fs: mark __generic_block_fiemap static ext4: remove the call to fiemap_check_flags in ext4_fiemap ext4: split _ext4_fiemap ext4: fix fiemap size checks for bitmap files ext4: fix EXT4_MAX_LOGICAL_BLOCK macro add comment for ext4_dir_entry_2 file_type member jbd2: avoid leaking transaction credits when unreserving handle ext4: drop ext4_journal_free_reserved() ext4: mballoc: use lock for checking free blocks while retrying ext4: mballoc: refactor ext4_mb_good_group() ext4: mballoc: introduce pcpu seqcnt for freeing PA to improve ENOSPC handling ext4: mballoc: refactor ext4_mb_discard_preallocations() ... 05 June 2020, 23:19:28 UTC
b25c664 Linus Torvalds 05 June 2020, 22:45:03 UTC Merge tag 'for-5.8/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mike Snitzer: - The largest change for this cycle is the DM zoned target's metadata version 2 feature that adds support for pairing regular block devices with a zoned device to ease the performance impact associated with finite random zones of zoned device. The changes came in three batches: the first prepared for and then added the ability to pair a single regular block device, the second was a batch of fixes to improve zoned's reclaim heuristic, and the third removed the limitation of only adding a single additional regular block device to allow many devices. Testing has shown linear scaling as more devices are added. - Add new emulated block size (ebs) target that emulates a smaller logical_block_size than a block device supports The primary use-case is to emulate "512e" devices that have 512 byte logical_block_size and 4KB physical_block_size. This is useful to some legacy applications that otherwise wouldn't be able to be used on 4K devices because they depend on issuing IO in 512 byte granularity. - Add discard interfaces to DM bufio. First consumer of the interface is the dm-ebs target that makes heavy use of dm-bufio. - Fix DM crypt's block queue_limits stacking to not truncate logic_block_size. - Add Documentation for DM integrity's status line. - Switch DMDEBUG from a compile time config option to instead use dynamic debug via pr_debug. - Fix DM multipath target's hueristic for how it manages "queue_if_no_path" state internally. DM multipath now avoids disabling "queue_if_no_path" unless it is actually needed (e.g. in response to configure timeout or explicit "fail_if_no_path" message). This fixes reports of spurious -EIO being reported back to userspace application during fault tolerance testing with an NVMe backend. Added various dynamic DMDEBUG messages to assist with debugging queue_if_no_path in the future. - Add a new DM multipath "Historical Service Time" Path Selector. - Fix DM multipath's dm_blk_ioctl() to switch paths on IO error. - Improve DM writecache target performance by using explicit cache flushing for target's single-threaded usecase and a small cleanup to remove unnecessary test in persistent_memory_claim. - Other small cleanups in DM core, dm-persistent-data, and DM integrity. * tag 'for-5.8/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (62 commits) dm crypt: avoid truncating the logical block size dm mpath: add DM device name to Failing/Reinstating path log messages dm mpath: enhance queue_if_no_path debugging dm mpath: restrict queue_if_no_path state machine dm mpath: simplify __must_push_back dm zoned: check superblock location dm zoned: prefer full zones for reclaim dm zoned: select reclaim zone based on device index dm zoned: allocate zone by device index dm zoned: support arbitrary number of devices dm zoned: move random and sequential zones into struct dmz_dev dm zoned: per-device reclaim dm zoned: add metadata pointer to struct dmz_dev dm zoned: add device pointer to struct dm_zone dm zoned: allocate temporary superblock for tertiary devices dm zoned: convert to xarray dm zoned: add a 'reserved' zone flag dm zoned: improve logging messages for reclaim dm zoned: avoid unnecessary device recalulation for secondary superblock dm zoned: add debugging message for reading superblocks ... 05 June 2020, 22:45:03 UTC
818dbde Linus Torvalds 05 June 2020, 22:11:50 UTC Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: :This series consists of the usual driver updates (qla2xxx, ufs, zfcp, target, scsi_debug, lpfc, qedi, qedf, hisi_sas, mpt3sas) plus a host of other minor updates. There are no major core changes in this series apart from a refactoring in scsi_lib.c" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (207 commits) scsi: ufs: ti-j721e-ufs: Fix unwinding of pm_runtime changes scsi: cxgb3i: Fix some leaks in init_act_open() scsi: ibmvscsi: Make some functions static scsi: iscsi: Fix deadlock on recovery path during GFP_IO reclaim scsi: ufs: Fix WriteBooster flush during runtime suspend scsi: ufs: Fix index of attributes query for WriteBooster feature scsi: ufs: Allow WriteBooster on UFS 2.2 devices scsi: ufs: Remove unnecessary memset for dev_info scsi: ufs-qcom: Fix scheduling while atomic issue scsi: mpt3sas: Fix reply queue count in non RDPQ mode scsi: lpfc: Fix lpfc_nodelist leak when processing unsolicited event scsi: target: tcmu: Fix a use after free in tcmu_check_expired_queue_cmd() scsi: vhost: Notify TCM about the maximum sg entries supported per command scsi: qla2xxx: Remove return value from qla_nvme_ls() scsi: qla2xxx: Remove an unused function scsi: iscsi: Register sysfs for iscsi workqueue scsi: scsi_debug: Parser tables and code interaction scsi: core: Refactor scsi_mq_setup_tags function scsi: core: Fix incorrect usage of shost_for_each_device scsi: qla2xxx: Fix endianness annotations in source files ... 05 June 2020, 22:11:50 UTC
242b233 Linus Torvalds 05 June 2020, 21:05:57 UTC Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma Pull rdma updates from Jason Gunthorpe: "A more active cycle than most of the recent past, with a few large, long discussed works this time. The RNBD block driver has been posted for nearly two years now, and flowing through RDMA due to it also introducing a new ULP. The removal of FMR has been a recurring discussion theme for a long time. And the usual smattering of features and bug fixes. Summary: - Various small driver bugs fixes in rxe, mlx5, hfi1, and efa - Continuing driver cleanups in bnxt_re, hns - Big cleanup of mlx5 QP creation flows - More consistent use of src port and flow label when LAG is used and a mlx5 implementation - Additional set of cleanups for IB CM - 'RNBD' network block driver and target. This is a network block RDMA device specific to ionos's cloud environment. It brings strong multipath and resiliency capabilities. - Accelerated IPoIB for HFI1 - QP/WQ/SRQ ioctl migration for uverbs, and support for multiple async fds - Support for exchanging the new IBTA defiend ECE data during RDMA CM exchanges - Removal of the very old and insecure FMR interface from all ULPs and drivers. FRWR should be preferred for at least a decade now" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (247 commits) RDMA/cm: Spurious WARNING triggered in cm_destroy_id() RDMA/mlx5: Return ECE DC support RDMA/mlx5: Don't rely on FW to set zeros in ECE response RDMA/mlx5: Return an error if copy_to_user fails IB/hfi1: Use free_netdev() in hfi1_netdev_free() RDMA/hns: Uninitialized variable in modify_qp_init_to_rtr() RDMA/core: Move and rename trace_cm_id_create() IB/hfi1: Fix hfi1_netdev_rx_init() error handling RDMA: Remove 'max_map_per_fmr' RDMA: Remove 'max_fmr' RDMA/core: Remove FMR device ops RDMA/rdmavt: Remove FMR memory registration RDMA/mthca: Remove FMR support for memory registration RDMA/mlx4: Remove FMR support for memory registration RDMA/i40iw: Remove FMR leftovers RDMA/bnxt_re: Remove FMR leftovers RDMA/mlx5: Remove FMR leftovers RDMA/core: Remove FMR pool API RDMA/rds: Remove FMR support for memory registration RDMA/srp: Remove support for FMR memory registration ... 05 June 2020, 21:05:57 UTC
3f7e823 Linus Torvalds 05 June 2020, 21:00:30 UTC Merge tag 'gpio-v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO updates from Linus Walleij: "This is the bulk of GPIO changes for the v5.8 kernel cycle. Core changes: - A new GPIO aggregator driver has been merged: this can join a few select GPIO lines into a new aggregated GPIO chip. This can be used for security: a process can be granted access to only these lines, for example for industrial control. Another way to use this is to reexpose certain select lines to a virtual machine or container. - Warn if the gpio-line-names is too long in he DT parser core. - GPIO lines can now be looked up by line name in addition to being looked up by offset. New drivers: - A new generic regmap GPIO driver has been merged. Too many regmap drivers are starting to look like each other so we need to create some common ground and try to move drivers over to using that. - The F7188X driver now supports F81865. Driver improvements: - Large improvements to the PCA953x expander, get multiple lines and several cleanups. - Large improvements to the DesignWare DWAPB driver, and Sergey Semin has volunteered to maintain it. - PL061 can now be built as a module, this is part of a bigger effort to make the ARM platforms more modular" * tag 'gpio-v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (77 commits) gpio: pca953x: Drop unneeded ACPI_PTR() MAINTAINERS: Add gpio regmap section gpio: add a reusable generic gpio_chip using regmap gpiolib: Introduce gpiochip_irqchip_add_domain() gpio: gpiolib: Allow GPIO IRQs to lazy disable gpiolib: Separate GPIO_GET_LINEINFO_WATCH_IOCTL conditional gpio: rcar: Fix runtime PM imbalance on error gpio: pca935x: Allow IRQ support for driver built as a module gpio: pxa: Add COMPILE_TEST support dt-bindings: gpio: Add renesas,em-gio bindings MAINTAINERS: Fix file name for DesignWare GPIO DT schema gpio: dwapb: Remove unneeded has_irq member in struct dwapb_port_property gpio: dwapb: Don't use IRQ 0 as valid Linux interrupt gpio: dwapb: avoid error message for optional IRQ gpio: dwapb: Call acpi_gpiochip_free_interrupts() on GPIO chip de-registration gpio: max730x: bring gpiochip_add_data after port config MAINTAINERS: Add GPIO Aggregator section docs: gpio: Add GPIO Aggregator documentation gpio: Add GPIO Aggregator gpiolib: Add support for GPIO lookup by line name ... 05 June 2020, 21:00:30 UTC
1f2dc7f Linus Torvalds 05 June 2020, 20:58:04 UTC Merge tag 'for-linus-5.8-1' of git://github.com/cminyard/linux-ipmi Pull IPMI updates from Corey Minyard: "A few small fixes for things, nothing earth shattering" * tag 'for-linus-5.8-1' of git://github.com/cminyard/linux-ipmi: ipmi:ssif: Remove dynamic platform device handing Try to load acpi_ipmi when an SSIF ACPI IPMI interface is added ipmi_si: Load acpi_ipmi when ACPI IPMI interface added ipmi:bt-bmc: Fix error handling and status check ipmi: Replace guid_copy() with import_guid() where it makes sense ipmi: use vzalloc instead of kmalloc for user creation ipmi:bt-bmc: Fix some format issue of the code ipmi:bt-bmc: Avoid unnecessary check 05 June 2020, 20:58:04 UTC
5a36f0f Linus Torvalds 05 June 2020, 20:51:49 UTC Merge tag 'vfio-v5.8-rc1' of git://github.com/awilliam/linux-vfio Pull VFIO updates from Alex Williamson: - Block accesses to disabled MMIO space (Alex Williamson) - VFIO device migration API (Kirti Wankhede) - type1 IOMMU dirty bitmap API and implementation (Kirti Wankhede) - PCI NULL capability masking (Alex Williamson) - Memory leak fixes (Qian Cai) - Reference leak fix (Qiushi Wu) * tag 'vfio-v5.8-rc1' of git://github.com/awilliam/linux-vfio: vfio iommu: typecast corrections vfio iommu: Use shift operation for 64-bit integer division vfio/mdev: Fix reference count leak in add_mdev_supported_type vfio: Selective dirty page tracking if IOMMU backed device pins pages vfio iommu: Add migration capability to report supported features vfio iommu: Update UNMAP_DMA ioctl to get dirty bitmap before unmap vfio iommu: Implementation of ioctl for dirty pages tracking vfio iommu: Add ioctl definition for dirty pages tracking vfio iommu: Cache pgsize_bitmap in struct vfio_iommu vfio iommu: Remove atomicity of ref_count of pinned pages vfio: UAPI for migration interface for device state vfio/pci: fix memory leaks of eventfd ctx vfio/pci: fix memory leaks in alloc_perm_bits() vfio-pci: Mask cap zero vfio-pci: Invalidate mmaps and block MMIO access on disabled memory vfio-pci: Fault mmaps to enable vma tracking vfio/type1: Support faulting PFNMAP vmas 05 June 2020, 20:51:49 UTC
ac7b342 Linus Torvalds 05 June 2020, 20:45:21 UTC Merge tag 'core_core_updates_for_5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull READ_IMPLIES_EXEC changes from Borislav Petkov: "Split the old READ_IMPLIES_EXEC workaround from executable PT_GNU_STACK now that toolchains long support PT_GNU_STACK marking and there's no need anymore to force modern programs into having all its user mappings executable instead of only the stack and the PROT_EXEC ones. Disable that automatic READ_IMPLIES_EXEC forcing on x86-64 and arm64. Add tables documenting how READ_IMPLIES_EXEC is handled on x86-64, arm and arm64. By Kees Cook" * tag 'core_core_updates_for_5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: arm64/elf: Disable automatic READ_IMPLIES_EXEC for 64-bit address spaces arm32/64/elf: Split READ_IMPLIES_EXEC from executable PT_GNU_STACK arm32/64/elf: Add tables to document READ_IMPLIES_EXEC x86/elf: Disable automatic READ_IMPLIES_EXEC on 64-bit x86/elf: Split READ_IMPLIES_EXEC from executable PT_GNU_STACK x86/elf: Add table to document READ_IMPLIES_EXEC 05 June 2020, 20:45:21 UTC
7ae7715 Linus Torvalds 05 June 2020, 19:39:30 UTC Merge tag 'powerpc-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Support for userspace to send requests directly to the on-chip GZIP accelerator on Power9. - Rework of our lockless page table walking (__find_linux_pte()) to make it safe against parallel page table manipulations without relying on an IPI for serialisation. - A series of fixes & enhancements to make our machine check handling more robust. - Lots of plumbing to add support for "prefixed" (64-bit) instructions on Power10. - Support for using huge pages for the linear mapping on 8xx (32-bit). - Remove obsolete Xilinx PPC405/PPC440 support, and an associated sound driver. - Removal of some obsolete 40x platforms and associated cruft. - Initial support for booting on Power10. - Lots of other small features, cleanups & fixes. Thanks to: Alexey Kardashevskiy, Alistair Popple, Andrew Donnellan, Andrey Abramov, Aneesh Kumar K.V, Balamuruhan S, Bharata B Rao, Bulent Abali, Cédric Le Goater, Chen Zhou, Christian Zigotzky, Christophe JAILLET, Christophe Leroy, Dmitry Torokhov, Emmanuel Nicolet, Erhard F., Gautham R. Shenoy, Geoff Levand, George Spelvin, Greg Kurz, Gustavo A. R. Silva, Gustavo Walbon, Haren Myneni, Hari Bathini, Joel Stanley, Jordan Niethe, Kajol Jain, Kees Cook, Leonardo Bras, Madhavan Srinivasan., Mahesh Salgaonkar, Markus Elfring, Michael Neuling, Michal Simek, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Pingfan Liu, Qian Cai, Ram Pai, Raphael Moreira Zinsly, Ravi Bangoria, Sam Bobroff, Sandipan Das, Segher Boessenkool, Stephen Rothwell, Sukadev Bhattiprolu, Tyrel Datwyler, Wolfram Sang, Xiongfeng Wang. * tag 'powerpc-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (299 commits) powerpc/pseries: Make vio and ibmebus initcalls pseries specific cxl: Remove dead Kconfig options powerpc: Add POWER10 architected mode powerpc/dt_cpu_ftrs: Add MMA feature powerpc/dt_cpu_ftrs: Enable Prefixed Instructions powerpc/dt_cpu_ftrs: Advertise support for ISA v3.1 if selected powerpc: Add support for ISA v3.1 powerpc: Add new HWCAP bits powerpc/64s: Don't set FSCR bits in INIT_THREAD powerpc/64s: Save FSCR to init_task.thread.fscr after feature init powerpc/64s: Don't let DT CPU features set FSCR_DSCR powerpc/64s: Don't init FSCR_DSCR in __init_FSCR() powerpc/32s: Fix another build failure with CONFIG_PPC_KUAP_DEBUG powerpc/module_64: Use special stub for _mcount() with -mprofile-kernel powerpc/module_64: Simplify check for -mprofile-kernel ftrace relocations powerpc/module_64: Consolidate ftrace code powerpc/32: Disable KASAN with pages bigger than 16k powerpc/uaccess: Don't set KUEP by default on book3s/32 powerpc/uaccess: Don't set KUAP by default on book3s/32 powerpc/8xx: Reduce time spent in allow_user_access() and friends ... 05 June 2020, 19:39:30 UTC
084623e Linus Torvalds 05 June 2020, 19:31:16 UTC Merge tag 'modules-for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull module updates from Jessica Yu: - Harden CONFIG_STRICT_MODULE_RWX by rejecting any module that has SHF_WRITE|SHF_EXECINSTR sections - Remove and clean up nested #ifdefs, as it makes code hard to read * tag 'modules-for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: module: Harden STRICT_MODULE_RWX module: break nested ARCH_HAS_STRICT_MODULE_RWX and STRICT_MODULE_RWX #ifdefs 05 June 2020, 19:31:16 UTC
64611a1 Eric Biggers 04 June 2020, 19:01:26 UTC dm crypt: avoid truncating the logical block size queue_limits::logical_block_size got changed from unsigned short to unsigned int, but it was forgotten to update crypt_io_hints() to use the new type. Fix it. Fixes: ad6bf88a6c19 ("block: fix an integer overflow in logical block size") Cc: stable@vger.kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:59 UTC
0486737 Mike Snitzer 04 June 2020, 14:44:34 UTC dm mpath: add DM device name to Failing/Reinstating path log messages When there are many DM multipath devices it really helps to have additional context for which DM device a failed or reinstated path is part of. Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:58 UTC
4c3f483 Mike Snitzer 29 May 2020, 19:59:13 UTC dm mpath: enhance queue_if_no_path debugging Add more DMDEBUG that shows arguments passed and caller, and another that shows state of related flags at end of queue_if_no_path(). Also add queue_if_no_path DMDEBUG to multipath_resume(). Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:57 UTC
553ec94 Mike Snitzer 27 May 2020, 20:32:51 UTC dm mpath: restrict queue_if_no_path state machine Do not allow saving disabled queue_if_no_path if already saved as enabled; implies multiple suspends (which shouldn't ever happen). Log if this unlikely scenario is ever triggered. Also, only write MPATHF_SAVED_QUEUE_IF_NO_PATH during presuspend or if "fail_if_no_path" message. MPATHF_SAVED_QUEUE_IF_NO_PATH is no longer always modified, e.g.: even if queue_if_no_path()'s save_old_value argument wasn't set. This just implies a bit tighter control over the management of MPATHF_SAVED_QUEUE_IF_NO_PATH. Side-effect is multipath_resume() doesn't reset MPATHF_QUEUE_IF_NO_PATH unless MPATHF_SAVED_QUEUE_IF_NO_PATH was set (during presuspend); and at that time the MPATHF_SAVED_QUEUE_IF_NO_PATH bit gets cleared. So MPATHF_SAVED_QUEUE_IF_NO_PATH's use is much more narrow in scope. Last, but not least, do _not_ disable queue_if_no_path during noflush suspend. There is no need/benefit to saving off queue_if_no_path via MPATHF_SAVED_QUEUE_IF_NO_PATH and clearing MPATHF_QUEUE_IF_NO_PATH for noflush suspend -- by avoiding this needless queue_if_no_path flag churn there is less potential for MPATHF_QUEUE_IF_NO_PATH to get lost. Which avoids potential for IOs to be errored back up to userspace during DM multipath's handling of path failures. That said, this last change papers over a reported issue concerning request-based dm-multipath's interaction with blk-mq, relative to suspend and resume: multipath_endio is being called _before_ multipath_resume. This should never happen if DM suspend's blk_mq_quiesce_queue() + dm_wait_for_completion() is genuinely waiting for all inflight blk-mq requests to complete. Similarly: drivers/md/dm.c:__dm_resume() clearly calls dm_table_resume_targets() _before_ dm_start_queue()'s blk_mq_unquiesce_queue() is called. If the queue isn't even restarted until after multipath_resume(); the BIG question that still needs answering is: how can multipath_end_io beat multipath_resume in a race!? Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:56 UTC
a862e4e Mike Snitzer 26 May 2020, 20:06:56 UTC dm mpath: simplify __must_push_back Remove micro-optimization that infers device is between presuspend and resume (was done purely to avoid call to dm_noflush_suspending, which isn't expensive anyway). Remove flags argument since they are no longer checked. And remove must_push_back_bio() since it was simply a call to __must_push_back(). Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:55 UTC
27d49ac Hannes Reinecke 02 June 2020, 11:09:56 UTC dm zoned: check superblock location When specifying several devices the superblock location must be checked to ensure the devices are specified in the correct order. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:54 UTC
2094045 Hannes Reinecke 02 June 2020, 11:09:55 UTC dm zoned: prefer full zones for reclaim Prefer full zones when selecting the next zone for reclaim. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:54 UTC
69875d4 Hannes Reinecke 02 June 2020, 11:09:54 UTC dm zoned: select reclaim zone based on device index per-device reclaim should select zones on that device only. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:53 UTC
22c1ef6 Hannes Reinecke 02 June 2020, 11:09:53 UTC dm zoned: allocate zone by device index When allocating a zone, pass in an indicator on which device the zone should be allocated; this increases performance for a multi-device setup because reclaim will now allocate zones on the device for which reclaim is running. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:52 UTC
4dba128 Hannes Reinecke 02 June 2020, 11:09:52 UTC dm zoned: support arbitrary number of devices Remove the hard-coded limit of two devices and support an unlimited number of additional zoned devices. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:51 UTC
bd82fda Hannes Reinecke 02 June 2020, 11:09:51 UTC dm zoned: move random and sequential zones into struct dmz_dev Random and sequential zones should be part of the respective device structure to make arbitration between devices possible. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:50 UTC
f97809a Hannes Reinecke 02 June 2020, 11:09:50 UTC dm zoned: per-device reclaim Instead of having one reclaim workqueue for the entire set we should be allocating a reclaim workqueue per device; doing so will reduce contention and should boost performance for a multi-device setup. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:50 UTC
1897981 Hannes Reinecke 02 June 2020, 11:09:49 UTC dm zoned: add metadata pointer to struct dmz_dev Add a metadata pointer within struct dmz_dev and use it as argument for blkdev_report_zones() instead of the metadata itself. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:49 UTC
8f22272 Hannes Reinecke 02 June 2020, 11:09:48 UTC dm zoned: add device pointer to struct dm_zone Add a pointer, to the containing device, within struct dm_zone and kill dmz_zone_to_dev(). Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:48 UTC
5d2c74f Hannes Reinecke 02 June 2020, 11:09:47 UTC dm zoned: allocate temporary superblock for tertiary devices Checking the tertiary superblock just consists of validating UUIDs, crcs, and the generation number; it doesn't have contents which would be required during the actual operation. So allocate a temporary superblock when checking tertiary devices to avoid having to store it together with the 'real' superblocks. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:47 UTC
a92fbc4 Hannes Reinecke 02 June 2020, 11:09:46 UTC dm zoned: convert to xarray The zones array is getting really large, and large arrays tend to wreak havoc with the CPU caches. So convert it to xarray to become more cache friendly. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Colin Ian King <colin.king@canonical.com> # fix leak in dmz_insert Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:46 UTC
aec67b4 Hannes Reinecke 02 June 2020, 11:09:45 UTC dm zoned: add a 'reserved' zone flag Instead of counting the number of reserved zones in dmz_free_zone(), mark the zone as 'reserved' during allocation and simplify dmz_free_zone(). Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:46 UTC
c3ff479 Hannes Reinecke 02 June 2020, 11:09:44 UTC dm zoned: improve logging messages for reclaim Instead of just reporting the errno, add some more verbose debugging message in the reclaim path. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:45 UTC
1565929 Hannes Reinecke 02 June 2020, 11:09:43 UTC dm zoned: avoid unnecessary device recalulation for secondary superblock The secondary superblock must reside on the same device as the primary superblock, so there is no need to re-calculate the device. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:44 UTC
35d0c96 Hannes Reinecke 02 June 2020, 11:09:42 UTC dm zoned: add debugging message for reading superblocks Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:43 UTC
334b4fc Mikulas Patocka 02 June 2020, 13:34:41 UTC dm ebs: use dm_bufio_forget_buffers Use dm_bufio_forget_buffers instead of a block-by-block loop that calls dm_bufio_forget. dm_bufio_forget_buffers is faster than the loop because it searches for used buffers using rb-tree. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:42 UTC
33a1806 Mikulas Patocka 02 June 2020, 13:34:40 UTC dm bufio: introduce forget_buffer_locked Introduce a function forget_buffer_locked that forgets a range of buffers. It is more efficient than calling forget_buffer in a loop. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:41 UTC
88f878e Mikulas Patocka 02 June 2020, 13:34:39 UTC dm bufio: clean up rbtree block ordering dm-bufio uses unnatural ordering in the rb-tree - blocks with smaller numbers were put to the right node and blocks with bigger numbers were put to the left node. Reverse that logic so that it's natural. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:41 UTC
40e9c5a Mikulas Patocka 02 June 2020, 13:48:10 UTC dm integrity: add status line documentation Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> 05 June 2020, 18:59:40 UTC
f4dd60a Linus Torvalds 05 June 2020, 18:18:53 UTC Merge tag 'x86-mm-2020-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 mm updates from Ingo Molnar: "Misc changes: - Unexport various PAT primitives - Unexport per-CPU tlbstate and uninline TLB helpers" * tag 'x86-mm-2020-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) x86/tlb/uv: Add a forward declaration for struct flush_tlb_info x86/cpu: Export native_write_cr4() only when CONFIG_LKTDM=m x86/tlb: Restrict access to tlbstate xen/privcmd: Remove unneeded asm/tlb.h include x86/tlb: Move PCID helpers where they are used x86/tlb: Uninline nmi_uaccess_okay() x86/tlb: Move cr4_set_bits_and_update_boot() to the usage site x86/tlb: Move paravirt_tlb_remove_table() to the usage site x86/tlb: Move __flush_tlb_all() out of line x86/tlb: Move flush_tlb_others() out of line x86/tlb: Move __flush_tlb_one_kernel() out of line x86/tlb: Move __flush_tlb_one_user() out of line x86/tlb: Move __flush_tlb_global() out of line x86/tlb: Move __flush_tlb() out of line x86/alternatives: Move temporary_mm helpers into C x86/cr4: Sanitize CR4.PCE update x86/cpu: Uninline CR4 accessors x86/tlb: Uninline __get_current_cr3_fast() x86/mm: Use pgprotval_t in protval_4k_2_large() and protval_large_2_4k() x86/mm: Unexport __cachemode2pte_tbl ... 05 June 2020, 18:18:53 UTC
435faf5 Linus Torvalds 05 June 2020, 03:14:18 UTC Merge tag 'riscv-for-linus-5.8-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: - The remainder of the code necessary to support the Kendryte K210: * Support for building device trees into the kernel, as the K210 doesn't have a bootloader that provides one * A K210 device tree and the associated defconfig update * Support for skipping PMP initialization on systems that trap on PMP accesses rather than treating them as WARL - Support for KGDB - Improvements to text patching - Some cleanups to the SiFive L2 cache driver * tag 'riscv-for-linus-5.8-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: soc: sifive: l2 cache: Mark l2_get_priv_group as static soc: sifive: l2 cache: Eliminate an unsigned zero compare warning riscv: Add support to determine no. of L2 cache way enabled riscv: cacheinfo: Implement cache_get_priv_group with a generic ops structure riscv: Use text_mutex instead of patch_lock riscv: Use NOKPROBE_SYMBOL() instead of __krpobes annotation riscv: Remove the 'riscv_' prefix of function name riscv: Add SW single-step support for KDB riscv: Use the XML target descriptions to report 3 system registers riscv: Add KGDB support kgdb: Add kgdb_has_hit_break function RISC-V: Skip setting up PMPs on traps riscv: K210: Update defconfig riscv: K210: Add a built-in device tree riscv: Allow device trees to be built into the kernel 05 June 2020, 03:14:18 UTC
571d54e Linus Torvalds 05 June 2020, 03:11:25 UTC Merge tag 'devicetree-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: - Convert various DT (non-binding) doc files to ReST - Various improvements to device link code - Fix __of_attach_node_sysfs refcounting bug - Add support for 'memory-region-names' with reserved-memory binding - Vendor prefixes for Protonic Holland, BeagleBoard.org, Alps, Check Point, Würth Elektronik, U-Boot, Vaisala, Baikal Electronics, Shanghai Awinic Technology Co., MikroTik, Silex Insight - A bunch more binding conversions to DT schema. Only 3K to go. - Add a minimum version check for schema tools - Treewide dropping of 'allOf' usage with schema references. Not needed in new json-schema spec. - Some formatting clean-ups of schemas * tag 'devicetree-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (194 commits) dt-bindings: clock: Add documentation for X1830 bindings. dt-bindings: mailbox: Convert imx mu to json-schema dt-bindings: power: Convert imx gpcv2 to json-schema dt-bindings: power: Convert imx gpc to json-schema dt-bindings: Merge gpio-usb-b-connector with usb-connector dt-bindings: timer: renesas: cmt: Convert to json-schema dt-bindings: clock: Convert i.MX8QXP LPCG to json-schema dt-bindings: timer: Convert i.MX GPT to json-schema dt-bindings: thermal: rcar-thermal: Add device tree support for r8a7742 dt-bindings: serial: Add binding for UART pin swap dt-bindings: geni-se: Add interconnect binding for GENI QUP dt-bindings: geni-se: Convert QUP geni-se bindings to YAML dt-bindings: vendor-prefixes: Add Silex Insight vendor prefix dt-bindings: input: touchscreen: edt-ft5x06: change reg property dt-bindings: usb: qcom,dwc3: Introduce interconnect properties for Qualcomm DWC3 driver dt-bindings: timer: renesas: mtu2: Convert to json-schema of/fdt: Remove redundant kbasename function call dt-bindings: clock: Convert i.MX1 clock to json-schema dt-bindings: clock: Convert i.MX21 clock to json-schema dt-bindings: clock: Convert i.MX25 clock to json-schema ... 05 June 2020, 03:11:25 UTC
9d71d3c Linus Torvalds 05 June 2020, 03:02:14 UTC Merge tag 'arm-dt-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM devicetree updates from Arnd Bergmann: "This is the set of device tree changes, mostly covering new hardware support, with 577 patches touching a little over 500 files. There are five new Arm SoCs supported in this release, all of them for existing SoC families: - Realtek RTD1195, RTD1395 and RTD1619 -- three SoCs used in both NAS devices and Android Set-top-box designs, along with the "Horseradish", "Lion Skin" and "Mjolnir" reference platforms; the Mele X1000 and Xnano X5 set-top-boxes and the Banana Pi BPi-M4 single-board computer. - Renesas RZ/G1H (r8a7742) -- a high-end 32-bit industrial SoC and the iW-RainboW-G21D-Qseven-RZG1H board/SoM - Rockchips RK3326 -- low-end 64-bit SoC along with the Odroid-GO Advance game console Newly added machines on already supported SoCs are: - AMLogic S905D based Smartlabs SML-5442TW TV box - AMLogic S905X3 based ODROID-C4 SBC - AMLogic S922XH based Beelink GT-King Pro TV box - Allwinner A20 based Olimex A20-OLinuXino-LIME-eMMC SBC - Aspeed ast2500 based BMCs in Facebook x86 "Yosemite V2" and YADRO OpenPower P9 "Nicole" - Marvell Kirkwood based Check Point L-50 router - Mediatek MT8173 based Elm/Hana Chromebook laptops - Microchip SAMA5D2 "Industrial Connectivity Platform" reference board - NXP i.MX8m based Beacon i.MX8m-Mini SoM development kit - Octavo OSDMP15x based Linux Automation MC-1 development board - Qualcomm SDM630 based Xiaomi Redmi Note 7 phone - Realtek RTD1295 based Xnano X5 TV Box - STMicroelectronics STM32MP1 based Stinger96 single-board computer and IoT Box - Samsung Exynos4210 based based Samsung Galaxy S2 phone - Socionext Uniphier based Akebi96 SBC - TI Keystone based K2G Evaluation board - TI am5729 based Beaglebone-AI development board Include device descriptions for additional hardware support in existing SoCs and machines based on all major SoC platforms: - AMlogic Meson - Allwinner sunxi - Arm Juno/VFP/Vexpress/Integrator - Broadcom bcm283x/bcm2711 - Hisilicon hi6220 - Marvell EBU - Mediatek MT27xx, MT76xx, MT81xx and MT67xx - Microchip SAMA5D2 - NXP i.MX6/i.MX7/i.MX8 and Layerscape - Nvidia Tegra - Qualcomm Snapdragon - Renesas r8a77961, r8a7791 - Rockchips RK32xx/RK33xx - ST-Ericsson ux500 - STMicroelectronics SMT32 - Samsung Exynos and S5PV210 - Socionext Uniphier - TI OMAP5/DRA7 and Keystone" * tag 'arm-dt-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (564 commits) ARM: dts: keystone: Rename "msmram" node to "sram" arm: dts: mt2712: add uart APDMA to device tree arm64: dts: mt8183: add mmc node arm64: dts: mt2712: add ethernet device node arm64: tegra: Make the RTC a wakeup source on Jetson Nano and TX1 ARM: dts: mmp3: Add the fifth SD HCI ARM: dts: berlin*: Fix up the SDHCI node names ARM: dts: mmp3: Fix USB & USB PHY node names ARM: dts: mmp3: Fix L2 cache controller node name ARM: dts: mmp*: Fix up encoding of the /rtc interrupts property ARM: dts: pxa*: Fix up encoding of the /rtc interrupts property ARM: dts: pxa910: Fix the gpio interrupt cell number ARM: dts: pxa3xx: Fix up encoding of the /gpio interrupts property ARM: dts: pxa168: Fix the gpio interrupt cell number ARM: dts: pxa168: Add missing address/size cells to i2c nodes ARM: dts: dove: Fix interrupt controller node name ARM: dts: kirkwood: Fix interrupt controller node name arm64: dts: Add SC9863A emmc and sd card nodes arm64: dts: Add SC9863A clock nodes arm64: dts: mt6358: add PMIC MT6358 related nodes ... 05 June 2020, 03:02:14 UTC
828f3e1 Linus Torvalds 05 June 2020, 02:56:20 UTC Merge tag 'arm-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM/SoC driver updates from Arnd Bergmann: "These are updates to SoC specific drivers that did not have another subsystem maintainer tree to go through for some reason: - Some bus and memory drivers for the MIPS P5600 based Baikal-T1 SoC that is getting added through the MIPS tree. - There are new soc_device identification drivers for TI K3, Qualcomm MSM8939 - New reset controller drivers for NXP i.MX8MP, Renesas RZ/G1H, and Hisilicon hi6220 - The SCMI firmware interface can now work across ARM SMC/HVC as a transport. - Mediatek platforms now use a new driver for their "MMSYS" hardware block that controls clocks and some other aspects in behalf of the media and gpu drivers. - Some Tegra processors have improved power management support, including getting woken up by the PMIC and cluster power down during idle. - A new v4l staging driver for Tegra is added. - Cleanups and minor bugfixes for TI, NXP, Hisilicon, Mediatek, and Tegra" * tag 'arm-drivers-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (155 commits) clk: sprd: fix compile-testing bus: bt1-axi: Build the driver into the kernel bus: bt1-apb: Build the driver into the kernel bus: bt1-axi: Use sysfs_streq instead of strncmp bus: bt1-axi: Optimize the return points in the driver bus: bt1-apb: Use sysfs_streq instead of strncmp bus: bt1-apb: Use PTR_ERR_OR_ZERO to return from request-regs method bus: bt1-apb: Fix show/store callback identations bus: bt1-apb: Include linux/io.h dt-bindings: memory: Add Baikal-T1 L2-cache Control Block binding memory: Add Baikal-T1 L2-cache Control Block driver bus: Add Baikal-T1 APB-bus driver bus: Add Baikal-T1 AXI-bus driver dt-bindings: bus: Add Baikal-T1 APB-bus binding dt-bindings: bus: Add Baikal-T1 AXI-bus binding staging: tegra-video: fix V4L2 dependency tee: fix crypto select drivers: soc: ti: knav_qmss_queue: Make knav_gp_range_ops static soc: ti: add k3 platforms chipid module driver dt-bindings: soc: ti: add binding for k3 platforms chipid module ... 05 June 2020, 02:56:20 UTC
298743c Linus Torvalds 05 June 2020, 02:54:15 UTC Merge tag 'arm-defconfig-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM defconfig updates from Arnd Bergmann: "These are the usual updates to arm/arm64 defconfig files, enabling newly added drivers and addressing changes to Kconfig files" * tag 'arm-defconfig-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (22 commits) ARM: imx_v6_v7_defconfig: extend RN5T618 PMIC family support arm64: defconfig: enable Qualcomm IPA and RMNet modules arm64: defconfig: Add LEDS_TRIGGER_TIMER arm64: defconfig: Enable UACCE/PCI PASID/SEC2/HPRE configs arm64: defconfig: Enable Qualcomm SC7180 pinctrl and gcc arm64: defconfig: Remove QCOM_GLINK_SSR ARM: multi_v7_defconfig: Enable r8a7742 SoC ARM: shmobile: defconfig: Enable r8a7742 SoC arm64: defconfig: enable meson gx audio as module arm64: defconfig: Enable SM8250 GCC driver ARM: defconfig: u8500: Enable new drivers for ux500 arm64: defconfig: Enable CONFIG_PINCTRL_IMX8DXL by default arm64: configs: Enable sun50i cpufreq nvmem ARM: shmobile: defconfig: Refresh for v5.7-rc1 ARM: defconfig: u8500: Enable new drivers for samsung-golden ARM: configs: sunxi: Add sun8i analog codec arm64: defconfig: Enable Qualcomm CAMCC, CAMSS and CCI drivers ARM: configs: at91: sama5: enable MCP16502 regulator ARM: configs: at91: sama5: enable SAMA5D2_PIOBU ARM: exynos_defconfig: Compile MAC80211/CFG80211 as modules ... 05 June 2020, 02:54:15 UTC
694b5a5 Linus Torvalds 05 June 2020, 02:47:11 UTC Merge tag 'arm-soc-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC updates from Arnd Bergmann: "One new platform gets added, the Realtek RTD1195, which is an older Cortex-a7 based relative of the RTD12xx chips that are already supported in arch/arm64. The platform may also be extended to support running 32-bit kernels on those 64-bit chips for memory-constrained machines. In the Renesas shmobile platform, we gain support for "RZ/G1H" or R8A7742, an eight-core chip based on Cortex-A15 and Cortex-A7 cores, originally released in 2016 as one of the last high-end 32-bit designs. There is ongoing cleanup for the integrator, tegra, imx, and omap2 platforms, with integrator getting very close to the goal of having zero code in arch/arm/, and omap2 moving more of the chip specifics from old board code into device tree files. The Versatile Express platform is made more modular, with built-in drivers now becoming loadable modules. This is part of a greater effort for the Android OS to have a common kernel binary for all platforms and any platform specific code in loadable modules. The PXA platform drops support for Compulab's pxa2xx boards that had rather unusual flash and PCI drivers but no known users remaining. All device drivers specific to those boards can now get removed as well. Across platforms, there is ongoing cleanup, with Geert and Rob revisiting some a lot of Kconfig options" * tag 'arm-soc-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (94 commits) ARM: omap2: fix omap5_realtime_timer_init definition ARM: zynq: Don't select CONFIG_ICST ARM: OMAP2+: Fix regression for using local timer on non-SMP SoCs clk: versatile: Fix kconfig dependency on COMMON_CLK_VERSATILE ARM: davinci: fix build failure without I2C power: reset: vexpress: fix build issue power: vexpress: cleanup: use builtin_platform_driver power: vexpress: add suppress_bind_attrs to true Revert "ARM: vexpress: Don't select VEXPRESS_CONFIG" MAINTAINERS: pxa: remove Compulab arm/pxa support ARM: pxa: remove Compulab pxa2xx boards bus: arm-integrator-lm: Fix return value check in integrator_ap_lm_probe() soc: imx: move cpu code to drivers/soc/imx ARM: imx: move cpu definitions into a header ARM: imx: use device_initcall for imx_soc_device_init ARM: imx: pcm037: make pcm970_sja1000_platform_data static bus: ti-sysc: Timers no longer need legacy quirk handling ARM: OMAP2+: Drop old timer code for dmtimer and 32k counter ARM: dts: Configure system timers for omap2 ARM: dts: Configure system timers for ti81xx ... 05 June 2020, 02:47:11 UTC
587f170 Nick Desaulniers 14 February 2020, 22:18:11 UTC Kconfig: add config option for asm goto w/ outputs This allows C code to make use of compilers with support for output variables along the fallthrough path via preprocessor define: CONFIG_CC_HAS_ASM_GOTO_OUTPUT [ This is not used anywhere yet, and currently released compilers don't support this yet, but it's coming, and I have some local experimental patches to take advantage of it when it does - Linus ] Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:28:07 UTC
886d7de Linus Torvalds 05 June 2020, 02:18:29 UTC Merge branch 'akpm' (patches from Andrew) Merge yet more updates from Andrew Morton: - More MM work. 100ish more to go. Mike Rapoport's "mm: remove __ARCH_HAS_5LEVEL_HACK" series should fix the current ppc issue - Various other little subsystems * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (127 commits) lib/ubsan.c: fix gcc-10 warnings tools/testing/selftests/vm: remove duplicate headers selftests: vm: pkeys: fix multilib builds for x86 selftests: vm: pkeys: use the correct page size on powerpc selftests/vm/pkeys: override access right definitions on powerpc selftests/vm/pkeys: test correct behaviour of pkey-0 selftests/vm/pkeys: introduce a sub-page allocator selftests/vm/pkeys: detect write violation on a mapped access-denied-key page selftests/vm/pkeys: associate key on a mapped page and detect write violation selftests/vm/pkeys: associate key on a mapped page and detect access violation selftests/vm/pkeys: improve checks to determine pkey support selftests/vm/pkeys: fix assertion in test_pkey_alloc_exhaust() selftests/vm/pkeys: fix number of reserved powerpc pkeys selftests/vm/pkeys: introduce powerpc support selftests/vm/pkeys: introduce generic pkey abstractions selftests: vm: pkeys: use the correct huge page size selftests/vm/pkeys: fix alloc_random_pkey() to make it really random selftests/vm/pkeys: fix assertion in pkey_disable_set/clear() selftests/vm/pkeys: fix pkey_disable_clear() selftests: vm: pkeys: add helpers for pkey bits ... 05 June 2020, 02:18:29 UTC
469cbd0 Arnd Bergmann 04 June 2020, 23:53:00 UTC lib/ubsan.c: fix gcc-10 warnings The latest compiler expects slightly different function prototypes for the ubsan helpers: lib/ubsan.c:192:6: error: conflicting types for built-in function '__ubsan_handle_add_overflow'; expected 'void(void *, void *, void *)' [-Werror=builtin-declaration-mismatch] 192 | void __ubsan_handle_add_overflow(struct overflow_data *data, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ lib/ubsan.c:200:6: error: conflicting types for built-in function '__ubsan_handle_sub_overflow'; expected 'void(void *, void *, void *)' [-Werror=builtin-declaration-mismatch] 200 | void __ubsan_handle_sub_overflow(struct overflow_data *data, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ lib/ubsan.c:207:6: error: conflicting types for built-in function '__ubsan_handle_mul_overflow'; expected 'void(void *, void *, void *)' [-Werror=builtin-declaration-mismatch] 207 | void __ubsan_handle_mul_overflow(struct overflow_data *data, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ lib/ubsan.c:214:6: error: conflicting types for built-in function '__ubsan_handle_negate_overflow'; expected 'void(void *, void *)' [-Werror=builtin-declaration-mismatch] 214 | void __ubsan_handle_negate_overflow(struct overflow_data *data, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ lib/ubsan.c:234:6: error: conflicting types for built-in function '__ubsan_handle_divrem_overflow'; expected 'void(void *, void *, void *)' [-Werror=builtin-declaration-mismatch] 234 | void __ubsan_handle_divrem_overflow(struct overflow_data *data, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Change the Linux implementation to match these, using a local typed pointer. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Julien Grall <julien.grall@arm.com> Link: http://lkml.kernel.org/r/20200429185948.4189600-1-arnd@arndb.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:28 UTC
2792d48 Jagadeesh Pagadala 04 June 2020, 23:52:57 UTC tools/testing/selftests/vm: remove duplicate headers Code cleanup: Remove duplicate headers which are included twice. Signed-off-by: Jagadeesh Pagadala <jagdsh.linux@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Brian Geffon <bgeffon@google.com> Link: http://lkml.kernel.org/r/1587278984-18847-1-git-send-email-jagdsh.linux@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
f21fda8 Sandipan Das 04 June 2020, 23:52:54 UTC selftests: vm: pkeys: fix multilib builds for x86 This ensures that both 32-bit and 64-bit binaries are generated when this is built on a x86_64 system. Most of the changes have been borrowed from tools/testing/selftests/x86/Makefile. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Dave Hansen <dave.hansen@intel.com> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/0326a442214d7a1b970d38296e63df3b217f5912.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
473c3cc Sandipan Das 04 June 2020, 23:52:50 UTC selftests: vm: pkeys: use the correct page size on powerpc Both 4K and 64K pages are supported on powerpc. Parts of the selftest code perform alignment computations based on the PAGE_SIZE macro which is currently hardcoded to 64K for powerpc. This causes some test failures on kernels configured with 4K page size. In some cases, we need to enforce function alignment on page size. Since this can only be done at build time, 64K is used as the alignment factor as that also ensures 4K alignment. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/5dcdfbf3353acdc90f315172e800b49f5ca21299.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
e950639 Ram Pai 04 June 2020, 23:52:46 UTC selftests/vm/pkeys: override access right definitions on powerpc Some platforms hardcode the x86 values for PKEY_DISABLE_ACCESS and PKEY_DISABLE_WRITE such as those in: /usr/include/bits/mman-shared.h. This overrides the definitions with correct values for powerpc. [sandipan@linux.ibm.com: fix powerpc access right definitions] Link: http://lkml.kernel.org/r/1ba86fd8a94f38131cfe2d9f277001dd1ad1d34e.1588959697.git.sandipan@linux.ibm.com Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/f6eb38cb3a1e12eb2cdc9da6300bc5a5dfba0db9.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
fa17437 Ram Pai 04 June 2020, 23:52:43 UTC selftests/vm/pkeys: test correct behaviour of pkey-0 Ensure that pkey-0 is allocated on start and that it can be attached dynamically in various modes, without failures. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/9b7c54a9b4261894fe0c7e884c70b87214ff8fbb.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
6e2c2d0 Ram Pai 04 June 2020, 23:52:39 UTC selftests/vm/pkeys: introduce a sub-page allocator This introduces a new allocator that allocates 4K hardware pages to back 64K linux pages. This allocator is available only on powerpc. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/c4a82fa962ec71015b994fab1aaf83bdfd091553.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
4e06e71 Ram Pai 04 June 2020, 23:52:36 UTC selftests/vm/pkeys: detect write violation on a mapped access-denied-key page Detect write-violation on a page to which access-disabled key is associated much after the page is mapped. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/6a7dd4069ee18a2a51b207a55aa197f3f3c59753.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
39351c1 Ram Pai 04 June 2020, 23:52:32 UTC selftests/vm/pkeys: associate key on a mapped page and detect write violation Detect write-violation on a page to which write-disabled key is associated much after the page is mapped. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/6bfe3b3832f8bcfb07d7f2cf116b45197f4587dd.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
aef759d Ram Pai 04 June 2020, 23:52:29 UTC selftests/vm/pkeys: associate key on a mapped page and detect access violation Detect access-violation on a page to which access-disabled key is associated much after the page is mapped. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/4a19cf9252c03dd883887e9002881599e6900d06.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
94c8a22 Ram Pai 04 June 2020, 23:52:25 UTC selftests/vm/pkeys: improve checks to determine pkey support For the pkeys subsystem to work, both the CPU and the kernel need to have support. So, additionally check if the kernel supports pkeys apart from the CPU feature checks. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/8fb76c63ebdadcf068ecd2d23731032e195cd364.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
b0acc5d Ram Pai 04 June 2020, 23:52:22 UTC selftests/vm/pkeys: fix assertion in test_pkey_alloc_exhaust() Some pkeys which are valid on the hardware are reserved and not available for application use. These keys cannot be allocated. test_pkey_alloc_exhaust() tries to account for these and has an assertion which validates if all available pkeys have been exahaustively allocated. However, the expression that is currently used is only valid for x86. On powerpc, a pkey is additionally reserved as compared to x86. Hence, the assertion is made to use an arch-specific helper to get the correct count of reserved pkeys. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/38b08d0318820ae46af3aa6048384fd8056c3df7.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
c63e5e7 Desnes A. Nunes do Rosario 04 June 2020, 23:52:19 UTC selftests/vm/pkeys: fix number of reserved powerpc pkeys The number of reserved pkeys in a PowerNV environment is different from that on PowerVM or KVM. Tested on PowerVM and PowerNV environments. Signed-off-by: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/0341a0ca961166814b44c9e724774672c18d54ca.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
589944b Ram Pai 04 June 2020, 23:52:15 UTC selftests/vm/pkeys: introduce powerpc support This makes use of the abstractions added earlier and introduces support for powerpc. For powerpc, after receiving the SIGSEGV, the signal handler must explicitly restore access permissions for the faulting pkey to allow the test to continue. As this makes use of pkey_access_allow(), all of its dependencies and other similar functions have been moved ahead of the signal handler. [sandipan@linux.ibm.com: fix powerpc access right updates] Link: http://lkml.kernel.org/r/5f65cf37be993760de8112a88da194e3ccbb2bf8.1588959697.git.sandipan@linux.ibm.com Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/b121e9fd33789ed9195276e32fe4e80bb6b88a31.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
604c496 Ram Pai 04 June 2020, 23:52:12 UTC selftests/vm/pkeys: introduce generic pkey abstractions This introduces some generic abstractions and provides the corresponding architecture-specfic implementations for these abstractions. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/1c977915e69fb7767fb0dbd55ac7656554b15b93.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
57bcb57 Sandipan Das 04 June 2020, 23:52:08 UTC selftests: vm: pkeys: use the correct huge page size The huge page size can vary across architectures. This will ensure that the correct huge page size is used when accessing the hugetlb controls under sysfs. Instead of using a hardcoded page size (i.e. 2MB), this now uses the HPAGE_SIZE macro which is arch-specific. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/66882a5d6e45c73c3a52bc4aef9754e48afa4f88.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
6e37326 Ram Pai 04 June 2020, 23:52:05 UTC selftests/vm/pkeys: fix alloc_random_pkey() to make it really random alloc_random_pkey() was allocating the same pkey every time. Not all pkeys were geting tested. This fixes it. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/0162f55816d4e783a0d6e49e554d0ab9a3c9a23b.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
ea5f95c Ram Pai 04 June 2020, 23:52:01 UTC selftests/vm/pkeys: fix assertion in pkey_disable_set/clear() In some cases, a pkey's bits need not necessarily change in a way that the value of the pkey register increases when performing a pkey_disable_set() or decreases when performing a pkey_disable_clear(). For example, on powerpc, if a pkey's current state is PKEY_DISABLE_ACCESS and we perform a pkey_write_disable() on it, the bits still remain the same. We will observe something similar when the pkey's current state is 0 and a pkey_access_enable() is performed on it. Either case would cause some assertions to fail. This fixes the problem. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/8240665131e43fc93eed4eea8194676c1ea39a7f.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:27 UTC
1155180 Ram Pai 04 June 2020, 23:51:58 UTC selftests/vm/pkeys: fix pkey_disable_clear() Currently, pkey_disable_clear() sets the specified bits instead clearing them. This has been dead code up to now because its only callers i.e. pkey_access/write_allow() are also unused. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/1f70bca60330a85dca42c3cd98212bb1cdf5a076.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
0c416bc Sandipan Das 04 June 2020, 23:51:54 UTC selftests: vm: pkeys: add helpers for pkey bits This introduces some functions that help with setting or clearing bits of a particular pkey. This also adds an abstraction for getting a pkey's bit position in the pkey register as this may vary across architectures. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/2ad9705f4f68ca7e72155cc583415e5a979546f1.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
4dbdd94 Sandipan Das 04 June 2020, 23:51:51 UTC selftests: vm: pkeys: Use sane types for pkey register The size of the pkey register can vary across architectures. This converts the data type of all its references to u64 in preparation for multi-arch support. To keep the definition of the u64 type consistent and remove format specifier related warnings, __SANE_USERSPACE_TYPES__ is defined as suggested by Michael Ellerman. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/d3e271798455d940e395e56e1ff1e82a31bcb7aa.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
a09160e Thiago Jung Bauermann 04 June 2020, 23:51:47 UTC selftests/vm/pkeys: make gcc check arguments of sigsafe_printf() This will help us ensure we print pkey_reg_t values correctly in different architectures. Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ram Pai <linuxram@us.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/b40b7a95fdd4045d62530a2a34452934caf3b0bc.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
53555e2 Thiago Jung Bauermann 04 June 2020, 23:51:44 UTC selftests/vm/pkeys: move some definitions to arch-specific header In preparation for multi-arch support, move definitions which have arch-specific values to x86-specific header. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/d58eba2930059c8b209eefd6d5b48fe922a5b010.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
5461c66 Ram Pai 04 June 2020, 23:51:41 UTC selftests/vm/pkeys: move generic definitions to header file Moved all the generic definition and helper functions to the header file. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/57177f99e92a51295956715d5f2d5688a4d13927.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
c4273c7 Ram Pai 04 June 2020, 23:51:37 UTC selftests/vm/pkeys: rename all references to pkru to a generic name This renames PKRU references to "pkey_reg" or "pkey" based on the usage. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/2c6970bc6d2e99796cd5cc1101bd2ecf7eccb937.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
804eb64 Ram Pai 04 June 2020, 23:51:34 UTC selftests/x86/pkeys: move selftests to arch-neutral directory Patch series "selftests, powerpc, x86: Memory Protection Keys", v19. Memory protection keys enables an application to protect its address space from inadvertent access by its own code. This feature is now enabled on powerpc and has been available since 4.16-rc1. The patches move the selftests to arch neutral directory and enhance their test coverage. Tested on powerpc64 and x86_64 (Skylake-SP). This patch (of 24): Move selftest files from tools/testing/selftests/x86/ to tools/testing/selftests/vm/. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/14d25194c3e2e652e0047feec4487e269e76e8c9.1585646528.git.sandipan@linux.ibm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
341a721 Pengcheng Yang 04 June 2020, 23:51:30 UTC kernel/relay.c: fix read_pos error when multiple readers When reading, read_pos should start with bytes_consumed, not file->f_pos. Because when there is more than one reader, the read_pos corresponding to file->f_pos may have been consumed, which will cause the data that has been consumed to be read and the bytes_consumed update error. Signed-off-by: Pengcheng Yang <yangpc@wangsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Jens Axboe <axboe@kernel.dk> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jann Horn <jannh@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk>e Link: http://lkml.kernel.org/r/1579691175-28949-1-git-send-email-yangpc@wangsu.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
54e200a Daniel Axtens 04 June 2020, 23:51:27 UTC kernel/relay.c: handle alloc_percpu returning NULL in relay_open alloc_percpu() may return NULL, which means chan->buf may be set to NULL. In that case, when we do *per_cpu_ptr(chan->buf, ...), we dereference an invalid pointer: BUG: Unable to handle kernel data access at 0x7dae0000 Faulting instruction address: 0xc0000000003f3fec ... NIP relay_open+0x29c/0x600 LR relay_open+0x270/0x600 Call Trace: relay_open+0x264/0x600 (unreliable) __blk_trace_setup+0x254/0x600 blk_trace_setup+0x68/0xa0 sg_ioctl+0x7bc/0x2e80 do_vfs_ioctl+0x13c/0x1300 ksys_ioctl+0x94/0x130 sys_ioctl+0x48/0xb0 system_call+0x5c/0x68 Check if alloc_percpu returns NULL. This was found by syzkaller both on x86 and powerpc, and the reproducer it found on powerpc is capable of hitting the issue as an unprivileged user. Fixes: 017c59c042d0 ("relay: Use per CPU constructs for the relay channel buffer pointers") Reported-by: syzbot+1e925b4b836afe85a1c6@syzkaller-ppc64.appspotmail.com Reported-by: syzbot+587b2421926808309d21@syzkaller-ppc64.appspotmail.com Reported-by: syzbot+58320b7171734bf79d26@syzkaller.appspotmail.com Reported-by: syzbot+d6074fb08bdb2e010520@syzkaller.appspotmail.com Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Akash Goel <akash.goel@intel.com> Cc: Andrew Donnellan <ajd@linux.ibm.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Salvatore Bonaccorso <carnil@debian.org> Cc: <stable@vger.kernel.org> [4.10+] Link: http://lkml.kernel.org/r/20191219121256.26480-1-dja@axtens.net Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
6744628 John Hubbard 04 June 2020, 23:51:24 UTC rapidio: convert get_user_pages() --> pin_user_pages() This code was using get_user_pages_fast(), in a "Case 2" scenario (DMA/RDMA), using the categorization from [1]. That means that it's time to convert the get_user_pages_fast() + put_page() calls to pin_user_pages_fast() + unpin_user_pages() calls. There is some helpful background in [2]: basically, this is a small part of fixing a long-standing disconnect between pinning pages, and file systems' use of those pages. [1] Documentation/core-api/pin_user_pages.rst [2] "Explicit pinning of user-space pages": https://lwn.net/Articles/807108/ Signed-off-by: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Alexandre Bounine <alex.bou9@gmail.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Dan Carpenter <dan.carpenter@oracle.com> Link: http://lkml.kernel.org/r/20200517235620.205225-3-jhubbard@nvidia.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
e1c3cdb Madhuparna Bhowmik 04 June 2020, 23:51:21 UTC rapidio: avoid data race between file operation callbacks and mport_cdev_add(). Fields of md(mport_dev) are set after cdev_device_add(). However, the file operation callbacks can be called after cdev_device_add() and therefore accesses to fields of md in the callbacks can race with the rest of the mport_cdev_add() function. One such example is INIT_LIST_HEAD(&md->portwrites) in mport_cdev_add(), the list is initialised after cdev_device_add(). This can race with list_add_tail(&pw_filter->md_node,&md->portwrites) in rio_mport_add_pw_filter() which is called by unlocked_ioctl. To avoid such data races use cdev_device_add() after initializing md. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Alexandre Bounine <alex.bou9@gmail.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Mike Marshall <hubcap@omnibond.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Allison Randal <allison@lohutok.net> Cc: Pavel Andrianov <andrianov@ispras.ru> Link: http://lkml.kernel.org/r/20200426112950.1803-1-madhuparnabhowmik10@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
762a3af Christoph Hellwig 04 June 2020, 23:51:18 UTC exec: open code copy_string_kernel Currently copy_string_kernel is just a wrapper around copy_strings that simplifies the calling conventions and uses set_fs to allow passing a kernel pointer. But due to the fact the we only need to handle a single kernel argument pointer, the logic can be sigificantly simplified while getting rid of the set_fs. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Link: http://lkml.kernel.org/r/20200501104105.2621149-3-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
986db2d Christoph Hellwig 04 June 2020, 23:51:14 UTC exec: simplify the copy_strings_kernel calling convention copy_strings_kernel is always used with a single argument, adjust the calling convention to that. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Link: http://lkml.kernel.org/r/20200501104105.2621149-2-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
eac2cec Kefeng Wang 04 June 2020, 23:51:11 UTC kernel/kprobes.c: convert to use DEFINE_SEQ_ATTRIBUTE macro Use DEFINE_SEQ_ATTRIBUTE macro to simplify the code. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Link: http://lkml.kernel.org/r/20200509064031.181091-4-wangkefeng.wang@huawei.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
01a9956 Kefeng Wang 04 June 2020, 23:51:08 UTC mm/vmstat.c: convert to use DEFINE_SEQ_ATTRIBUTE macro Use DEFINE_SEQ_ATTRIBUTE macro to simplify the code. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Link: http://lkml.kernel.org/r/20200509064031.181091-3-wangkefeng.wang@huawei.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
d2c0e6e Kefeng Wang 04 June 2020, 23:51:05 UTC include/linux/seq_file.h: introduce DEFINE_SEQ_ATTRIBUTE() helper macro Patch series "seq_file: Introduce DEFINE_SEQ_ATTRIBUTE() helper macro". As discussed in https://lore.kernel.org/lkml/20191129222310.GA3712618@kroah.com/, we could introduce a new helper macro to reduce losts of boilerplate code, vmstat and kprobes is the example which covert to use it, if this is accepted, I will send out more cleanups. This patch (of 3): Introduce DEFINE_SEQ_ATTRIBUTE() helper macro to decrease code duplication. [akpm@linux-foundation.org: coding style fixes] Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Link: http://lkml.kernel.org/r/20200509064031.181091-1-wangkefeng.wang@huawei.com Link: http://lkml.kernel.org/r/20200509064031.181091-2-wangkefeng.wang@huawei.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:26 UTC
a396301 Joe Perches 04 June 2020, 23:51:02 UTC fs/seq_file.c: seq_read: Update pr_info_ratelimited Use a more common logging style. Add and use pr_fmt, coalesce the format string, align arguments, use better grammar. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Vasily Averin <vvs@virtuozzo.com> Link: http://lkml.kernel.org/r/96ff603230ca1bd60034c36519be3930c3a3a226.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
8983100 OGAWA Hirofumi 04 June 2020, 23:50:59 UTC fat: improve the readahead for FAT entries Current readahead for FAT entries is very simple but is having some flaws, so it is not working well for some environments. This patch improves the readahead more or less. The key points of modification are, - make the readahead size tunable by using bdi->ra_pages - care the bdi->io_pages to avoid the small size I/O request - update readahead window before fully exhausting With this patch, on slow USB connected 2TB hdd: [before] 383.18sec [after] 51.03sec Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: hyeongseok.kim <hyeongseok.kim@lge.com> Reviewed-by: hyeongseok.kim <hyeongseok.kim@lge.com> Link: http://lkml.kernel.org/r/87d08e1dlh.fsf@mail.parknet.co.jp Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
b1b6575 OGAWA Hirofumi 04 June 2020, 23:50:56 UTC fat: don't allow to mount if the FAT length == 0 If FAT length == 0, the image doesn't have any data. And it can be the cause of overlapping the root dir and FAT entries. Also Windows treats it as invalid format. Reported-by: syzbot+6f1624f937d9d6911e2d@syzkaller.appspotmail.com Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Marco Elver <elver@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Link: http://lkml.kernel.org/r/87r1wz8mrd.fsf@mail.parknet.co.jp Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
ada4ab7 Chris Down 04 June 2020, 23:50:53 UTC init: allow distribution configuration of default init Some init systems (eg. systemd) have init at their own paths, for example, /usr/lib/systemd/systemd. A compatibility symlink to one of the hardcoded init paths is provided by another package, usually named something like systemd-sysvcompat or similar. Currently distro maintainers who are hands-off on the bootloader are more or less required to include those compatibility links as part of their base distribution, because it's hard to migrate away from them since there's a risk some users will not get the message to set init= on the kernel command line appropriately. Moreover, for distributions where the init system is something the distribution itself is opinionated about (eg. Arch, which has systemd in the required `base` package), we could usually reasonably configure this ahead of time when building the distribution kernel. However, we currently simply don't have any way to configure the kernel to do this. Here's an example discussion where removing sysvcompat was discussed by distro maintainers[0]. This patch adds a new Kconfig tunable, CONFIG_DEFAULT_INIT, which if set is tried before the hardcoded fallback list. So the order of precedence is now thus: 1. init= on command line (on failure: panic) 2. CONFIG_DEFAULT_INIT (on failure: try #3) 3. Hardcoded fallback list (on failure: panic) This new config parameter will allow distribution maintainers to move away from these compatibility links safely, without having to worry that their users might not have the right init=. There are also two other benefits of this over having the distribution maintain a symlink: 1. One of the value propositions over simply having distributions maintain a /sbin/init symlink via a package is that it also frees distributions which have a preferred default, but not mandatory, init system from having their package manager fight with their users for control of /{s,}bin/init. Instead, the distribution simply makes their preference known in CONFIG_DEFAULT_INIT, and if the user installs another init system and uninstalls the default one they can still make use of /{s,}bin/init and friends for their own uses. This makes more cases Just Work(tm) without the user having to perform extra configuration via init=. 2. Since before this we don't know which path the distribution actually _intends_ to serve init from, we don't pr_err if it is simply missing, and usually will just silently put the user in a /bin/sh shell. Now that the distribution can make a declaration of intent, we can be more vocal when this init system fails to launch for any reason, even if it's simply because no file exists at that location, speeding up the palaver of init/mount dependency/etc debugging a bit. [0]: https://lists.archlinux.org/pipermail/arch-dev-public/2019-January/029435.html Signed-off-by: Chris Down <chris@chrisdown.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Link: http://lkml.kernel.org/r/20200522160234.GA1487022@chrisdown.name Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
51da9df Nick Desaulniers 04 June 2020, 23:50:49 UTC elfnote: mark all .note sections SHF_ALLOC ELFNOTE_START allows callers to specify flags for .pushsection assembler directives. All callsites but ELF_NOTE use "a" for SHF_ALLOC. For vdso's that explicitly use ELF_NOTE_START and BUILD_SALT, the same section is specified twice after preprocessing, once with "a" flag, once without. Example: .pushsection .note.Linux, "a", @note ; .pushsection .note.Linux, "", @note ; While GNU as allows this ordering, it warns for the opposite ordering, making these directives position dependent. We'd prefer not to precisely match this behavior in Clang's integrated assembler. Instead, the non __ASSEMBLY__ definition of ELF_NOTE uses __attribute__((section(".note.Linux"))) which is created with SHF_ALLOC, so let's make the __ASSEMBLY__ definition of ELF_NOTE consistent with C and just always use "a" flag. This allows Clang to assemble a working mainline (5.6) kernel via: $ make CC=clang AS=clang Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Fangrui Song <maskray@google.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://github.com/ClangBuiltLinux/linux/issues/913 Link: http://lkml.kernel.org/r/20200325231250.99205-1-ndesaulniers@google.com Debugged-by: Ilie Halip <ilie.halip@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
852991d Anthony Iliopoulos 04 June 2020, 23:50:46 UTC fs/binfmt_elf: remove redundant elf_map ifndef The ifndef was added a long time ago to support archs that would define their own mapping function. The last user was the metag arch which was removed from the tree, and as such there are no users left. Let's kill it. Signed-off-by: Anthony Iliopoulos <ailiop@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200402161543.4119-1-ailiop@suse.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
c7f574d Geert Uytterhoeven 04 June 2020, 23:50:43 UTC checkpatch: use patch subject when reading from stdin While "git am" can apply an mbox file containing multiple patches (e.g. as created by b4[1], or a patch bundle downloaded from patchwork), checkpatch does not have proper support for that. When operating on an mbox, checkpatch will merge all detected tags, and complain falsely about duplicates: WARNING: Duplicate signature As modifying checkpatch to reset state in between each patch is a lot of work, a simple solution is splitting the mbox into individual patches, and invoking checkpatch for each of them. Fortunately checkpatch can read a patch from stdin, so the classic "formail" tool can be used to split the mbox, and pipe all individual patches to checkpatch: formail -s scripts/checkpatch.pl < my-mbox However, when reading a patch file from standard input, checkpatch calls it "Your patch", and reports its state as: Your patch has style problems, please review. or: Your patch has no obvious style problems and is ready for submission. Hence it can be difficult to identify which patches need to be reviewed and improved. Fix this by replacing "Your patch" by (the first line of) the email subject, if present. Note that "git mailsplit" can also be used to split an mbox, but it will create individual files for each patch, thus requiring cleanup afterwards. Formail does not have this disadvantage. [1] https://git.kernel.org/pub/scm/utils/b4/b4.git [joe@perches.com: reduce cpu usage] Link: http://lkml.kernel.org/r/c9d89bb24c7414142414c60371e210fdcf4617d2.camel@perches.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Joe Perches <joe@perches.com> Cc: Konstantin Ryabitsev <konstantin@linuxfoundation.org> Link: http://lkml.kernel.org/r/20200505132613.17452-1-geert+renesas@glider.be Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
32f30ca Joe Perches 04 June 2020, 23:50:40 UTC checkpatch: disallow --git and --file/--fix Don't allow these options to be combined. Miscellanea: o Add missing $P: to some die("reason message") output Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/3dc7bdaa58490f5906efc11a4d6113e42a087723.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
a55ee0c Joe Perches 04 June 2020, 23:50:36 UTC checkpatch: look for c99 comments in ctx_locate_comment Some checks look for comments around a specific function like read_barrier_depends. Extend the check to support both c89 and c90 comment styles. c89 /* comment */ or c99 // comment For c99 comments, only look a 3 single lines, the line being scanned, the line above and the line below the line being scanned rather than the patch diff context. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Paul E. McKenney <paulmck@kernel.org> Cc: Marco Elver <elver@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Will Deacon <will@kernel.org> Link: http://lkml.kernel.org/r/65cb075435d2f385a53c77571b491b2b09faaf8e.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
7ccf41a Joe Perches 04 June 2020, 23:50:33 UTC checkpatch: additional MAINTAINER section entry ordering checks There is a preferred order for the entries in MAINTAINERS sections. See commits 3b50142d8528 ("MAINTAINERS: sort field names for all entries") and 6680125ea5a2 ("MAINTAINERS: list the section entries in the preferred order") Add checkpatch tests to try to keep that ordering. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: http://lkml.kernel.org/r/17677130b3ca62d79817e6a22546bad39d7e81b4.camel@perches.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
bd93f00 Arnd Bergmann 04 June 2020, 23:50:30 UTC include/linux/bitops.h: avoid clang shift-count-overflow warnings Clang normally does not warn about certain issues in inline functions when it only happens in an eliminated code path. However if something else goes wrong, it does tend to complain about the definition of hweight_long() on 32-bit targets: include/linux/bitops.h:75:41: error: shift count >= width of type [-Werror,-Wshift-count-overflow] return sizeof(w) == 4 ? hweight32(w) : hweight64(w); ^~~~~~~~~~~~ include/asm-generic/bitops/const_hweight.h:29:49: note: expanded from macro 'hweight64' define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w)) ^~~~~~~~~~~~~~~~~~~~ include/asm-generic/bitops/const_hweight.h:21:76: note: expanded from macro '__const_hweight64' define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32)) ^ ~~ include/asm-generic/bitops/const_hweight.h:20:49: note: expanded from macro '__const_hweight32' define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16)) ^ include/asm-generic/bitops/const_hweight.h:19:72: note: expanded from macro '__const_hweight16' define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 )) ^ include/asm-generic/bitops/const_hweight.h:12:9: note: expanded from macro '__const_hweight8' (!!((w) & (1ULL << 2))) + \ Adding an explicit cast to __u64 avoids that warning and makes it easier to read other output. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Link: http://lkml.kernel.org/r/20200505135513.65265-1-arnd@arndb.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
c348c16 Jesse Brandeburg 04 June 2020, 23:50:27 UTC lib: make a test module with set/clear bit Test some bit clears/sets to make sure assembly doesn't change, and that the set_bit and clear_bit functions work and don't cause sparse warnings. Instruct Kbuild to build this file with extra warning level -Wextra, to catch new issues, and also doesn't hurt to build with C=1. This was used to test changes to arch/x86/include/asm/bitops.h. In particular, sparse (C=1) was very concerned when the last bit before a natural boundary, like 7, or 31, was being tested, as this causes sign extension (0xffffff7f) for instance when clearing bit 7. Recommended usage: make defconfig scripts/config -m CONFIG_TEST_BITOPS make modules_prepare make C=1 W=1 lib/test_bitops.ko objdump -S -d lib/test_bitops.ko insmod lib/test_bitops.ko rmmod lib/test_bitops.ko <check dmesg>, there should be no compiler/sparse warnings and no error messages in log. Link: http://lkml.kernel.org/r/20200310221747.2848474-2-jesse.brandeburg@intel.com Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> CcL Ingo Molnar <mingo@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 05 June 2020, 02:06:25 UTC
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