diff options
| author | Brijesh Singh <brijesh.singh@amd.com> | 2018-07-20 10:28:46 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-07-22 14:10:38 +0200 |
| commit | 9b788f32bee6b0b293a4bdfca4ad4bb0206407fb (patch) | |
| tree | 1a1137caf4911461e43abd7c57216571b65cbc71 /arch/arm/Kconfig.debug | |
| parent | 45ae4df9220701071ffec057d4b0071943022ab3 (diff) | |
x86/efi: Access EFI MMIO data as unencrypted when SEV is active
SEV guest fails to update the UEFI runtime variables stored in the
flash.
The following commit:
1379edd59673 ("x86/efi: Access EFI data as encrypted when SEV is active")
unconditionally maps all the UEFI runtime data as 'encrypted' (C=1).
When SEV is active the UEFI runtime data marked as EFI_MEMORY_MAPPED_IO
should be mapped as 'unencrypted' so that both guest and hypervisor can
access the data.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Cc: <stable@vger.kernel.org> # 4.15.x
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Fixes: 1379edd59673 ("x86/efi: Access EFI data as encrypted ...")
Link: http://lkml.kernel.org/r/20180720012846.23560-2-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/Kconfig.debug')
0 files changed, 0 insertions, 0 deletions