https://github.com/torvalds/linux
Revision 2103f6cba61a8b8bea3fc1b63661d830a2125e76 authored by Stephen Warren on 02 August 2013, 19:52:49 UTC, committed by Russell King on 13 August 2013, 19:23:18 UTC
Architectures should fully validate whether kexec is possible as part of machine_kexec_prepare(), so that user-space's kexec_load() operation can report any problems. Performing validation in machine_kexec() itself is too late, since it is not allowed to return. Prior to this patch, ARM's machine_kexec() was testing after-the-fact whether machine_kexec_prepare() was able to disable all but one CPU. Instead, modify machine_kexec_prepare() to validate all conditions necessary for machine_kexec_prepare()'s to succeed. BUG if the validation succeeded, yet disabling the CPUs didn't actually work. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
1 parent 00efaa0
Tip revision: 2103f6cba61a8b8bea3fc1b63661d830a2125e76 authored by Stephen Warren on 02 August 2013, 19:52:49 UTC
ARM: 7807/1: kexec: validate CPU hotplug support
ARM: 7807/1: kexec: validate CPU hotplug support
Tip revision: 2103f6c
| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 17.8 KB |
| Kconfig.debug | -rw-r--r-- | 1015 bytes |
| Makefile | -rw-r--r-- | 2.0 KB |
| backing-dev.c | -rw-r--r-- | 16.3 KB |
| balloon_compaction.c | -rw-r--r-- | 9.6 KB |
| bootmem.c | -rw-r--r-- | 20.8 KB |
| bounce.c | -rw-r--r-- | 6.4 KB |
| cleancache.c | -rw-r--r-- | 12.7 KB |
| compaction.c | -rw-r--r-- | 32.3 KB |
| debug-pagealloc.c | -rw-r--r-- | 2.1 KB |
| dmapool.c | -rw-r--r-- | 13.1 KB |
| fadvise.c | -rw-r--r-- | 3.6 KB |
| failslab.c | -rw-r--r-- | 1.3 KB |
| filemap.c | -rw-r--r-- | 67.7 KB |
| filemap_xip.c | -rw-r--r-- | 11.3 KB |
| fremap.c | -rw-r--r-- | 6.6 KB |
| frontswap.c | -rw-r--r-- | 13.5 KB |
| highmem.c | -rw-r--r-- | 9.9 KB |
| huge_memory.c | -rw-r--r-- | 73.7 KB |
| hugetlb.c | -rw-r--r-- | 88.9 KB |
| hugetlb_cgroup.c | -rw-r--r-- | 10.7 KB |
| hwpoison-inject.c | -rw-r--r-- | 3.3 KB |
| init-mm.c | -rw-r--r-- | 619 bytes |
| internal.h | -rw-r--r-- | 11.1 KB |
| interval_tree.c | -rw-r--r-- | 3.2 KB |
| kmemcheck.c | -rw-r--r-- | 2.8 KB |
| kmemleak-test.c | -rw-r--r-- | 3.3 KB |
| kmemleak.c | -rw-r--r-- | 52.4 KB |
| ksm.c | -rw-r--r-- | 65.9 KB |
| maccess.c | -rw-r--r-- | 1.6 KB |
| madvise.c | -rw-r--r-- | 14.1 KB |
| memblock.c | -rw-r--r-- | 29.6 KB |
| memcontrol.c | -rw-r--r-- | 185.5 KB |
| memory-failure.c | -rw-r--r-- | 44.8 KB |
| memory.c | -rw-r--r-- | 115.8 KB |
| memory_hotplug.c | -rw-r--r-- | 45.5 KB |
| mempolicy.c | -rw-r--r-- | 71.3 KB |
| mempool.c | -rw-r--r-- | 10.5 KB |
| migrate.c | -rw-r--r-- | 44.3 KB |
| mincore.c | -rw-r--r-- | 7.8 KB |
| mlock.c | -rw-r--r-- | 14.8 KB |
| mm_init.c | -rw-r--r-- | 5.0 KB |
| mmap.c | -rw-r--r-- | 85.9 KB |
| mmu_context.c | -rw-r--r-- | 1.2 KB |
| mmu_notifier.c | -rw-r--r-- | 9.5 KB |
| mmzone.c | -rw-r--r-- | 2.4 KB |
| mprotect.c | -rw-r--r-- | 10.2 KB |
| mremap.c | -rw-r--r-- | 14.4 KB |
| msync.c | -rw-r--r-- | 2.4 KB |
| nobootmem.c | -rw-r--r-- | 10.9 KB |
| nommu.c | -rw-r--r-- | 53.2 KB |
| oom_kill.c | -rw-r--r-- | 19.5 KB |
| page-writeback.c | -rw-r--r-- | 69.8 KB |
| page_alloc.c | -rw-r--r-- | 176.6 KB |
| page_cgroup.c | -rw-r--r-- | 11.9 KB |
| page_io.c | -rw-r--r-- | 8.9 KB |
| page_isolation.c | -rw-r--r-- | 7.0 KB |
| pagewalk.c | -rw-r--r-- | 5.9 KB |
| percpu-km.c | -rw-r--r-- | 2.8 KB |
| percpu-vm.c | -rw-r--r-- | 12.9 KB |
| percpu.c | -rw-r--r-- | 57.1 KB |
| pgtable-generic.c | -rw-r--r-- | 4.6 KB |
| process_vm_access.c | -rw-r--r-- | 13.2 KB |
| quicklist.c | -rw-r--r-- | 2.4 KB |
| readahead.c | -rw-r--r-- | 15.9 KB |
| rmap.c | -rw-r--r-- | 50.5 KB |
| shmem.c | -rw-r--r-- | 77.8 KB |
| slab.c | -rw-r--r-- | 114.2 KB |
| slab.h | -rw-r--r-- | 7.3 KB |
| slab_common.c | -rw-r--r-- | 15.1 KB |
| slob.c | -rw-r--r-- | 15.3 KB |
| slub.c | -rw-r--r-- | 126.4 KB |
| sparse-vmemmap.c | -rw-r--r-- | 5.9 KB |
| sparse.c | -rw-r--r-- | 21.4 KB |
| swap.c | -rw-r--r-- | 24.3 KB |
| swap_state.c | -rw-r--r-- | 11.4 KB |
| swapfile.c | -rw-r--r-- | 66.9 KB |
| truncate.c | -rw-r--r-- | 19.6 KB |
| util.c | -rw-r--r-- | 9.6 KB |
| vmalloc.c | -rw-r--r-- | 67.9 KB |
| vmpressure.c | -rw-r--r-- | 11.5 KB |
| vmscan.c | -rw-r--r-- | 105.9 KB |
| vmstat.c | -rw-r--r-- | 33.9 KB |
| zbud.c | -rw-r--r-- | 15.9 KB |
| zswap.c | -rw-r--r-- | 24.3 KB |
Computing file changes ...
