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>
1 parent 1291a0d
File | Mode | Size |
---|---|---|
Kconfig | -rw-r--r-- | 58.9 KB |
Makefile | -rw-r--r-- | 1.2 KB |
calibrate.c | -rw-r--r-- | 8.6 KB |
do_mounts.c | -rw-r--r-- | 14.6 KB |
do_mounts.h | -rw-r--r-- | 1.1 KB |
do_mounts_initrd.c | -rw-r--r-- | 3.5 KB |
do_mounts_md.c | -rw-r--r-- | 8.2 KB |
do_mounts_rd.c | -rw-r--r-- | 8.4 KB |
init_task.c | -rw-r--r-- | 838 bytes |
initramfs.c | -rw-r--r-- | 14.1 KB |
main.c | -rw-r--r-- | 26.7 KB |
noinitramfs.c | -rw-r--r-- | 1.5 KB |
version.c | -rw-r--r-- | 1.2 KB |
Computing file changes ...