diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-03-10 18:35:57 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-03-11 15:54:54 +0100 |
| commit | 985e537a4082b4635754a57f4f95430790afee6a (patch) | |
| tree | 506b1454c4c6401263bf250598a4a2fca8edf188 /lib/lz4 | |
| parent | 2c523b344dfa65a3738e7039832044aa133c75fb (diff) | |
x86/ioremap: Map EFI runtime services data as encrypted for SEV
The dmidecode program fails to properly decode the SMBIOS data supplied
by OVMF/UEFI when running in an SEV guest. The SMBIOS area, under SEV, is
encrypted and resides in reserved memory that is marked as EFI runtime
services data.
As a result, when memremap() is attempted for the SMBIOS data, it
can't be mapped as regular RAM (through try_ram_remap()) and, since
the address isn't part of the iomem resources list, it isn't mapped
encrypted through the fallback ioremap().
Add a new __ioremap_check_other() to deal with memory types like
EFI_RUNTIME_SERVICES_DATA which are not covered by the resource ranges.
This allows any runtime services data which has been created encrypted,
to be mapped encrypted too.
[ bp: Move functionality to a separate function. ]
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Tested-by: Joerg Roedel <jroedel@suse.de>
Cc: <stable@vger.kernel.org> # 5.3
Link: https://lkml.kernel.org/r/2d9e16eb5b53dc82665c95c6764b7407719df7a0.1582645327.git.thomas.lendacky@amd.com
Diffstat (limited to 'lib/lz4')
0 files changed, 0 insertions, 0 deletions