Revision f32ab7547161b9fa7ebfbc4f18ea1eb3fd49fe25 authored by =?UTF-8?q?Christian=20K=C3=B6nig?= on 11 January 2018, 13:23:29 UTC, committed by Bjorn Helgaas on 11 January 2018, 17:22:39 UTC
Only try to enable a 64-bit window on AMD CPUs when "pci=big_root_window" is specified. This taints the kernel because the new 64-bit window uses address space we don't know anything about, and it may contain unreported devices or memory that would conflict with the window. The pci_amd_enable_64bit_bar() quirk that enables the window is specific to AMD CPUs. The generic solution would be to have the firmware enable the window and describe it in the host bridge's _CRS method, or at least describe it in the _PRS method so the OS would have the option of enabling it. Signed-off-by: Christian König <christian.koenig@amd.com> [bhelgaas: changelog, extend doc, mention taint in dmesg] Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
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| File | Mode | Size |
|---|---|---|
| Makefile | -rw-r--r-- | 361 bytes |
| compat.c | -rw-r--r-- | 2.2 KB |
| ipc_sysctl.c | -rw-r--r-- | 5.4 KB |
| mq_sysctl.c | -rw-r--r-- | 2.9 KB |
| mqueue.c | -rw-r--r-- | 40.1 KB |
| msg.c | -rw-r--r-- | 27.4 KB |
| msgutil.c | -rw-r--r-- | 3.6 KB |
| namespace.c | -rw-r--r-- | 4.8 KB |
| sem.c | -rw-r--r-- | 58.1 KB |
| shm.c | -rw-r--r-- | 38.6 KB |
| syscall.c | -rw-r--r-- | 4.3 KB |
| util.c | -rw-r--r-- | 22.2 KB |
| util.h | -rw-r--r-- | 7.2 KB |
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