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Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull EFI fix from Ingo Molnar:
 "An UEFI variables fix for SEV guests"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/efi: Access EFI MMIO data as unencrypted when SEV is active
This commit is contained in:
Linus Torvalds 2018-07-30 11:07:34 -07:00
parent acb1872577 9b788f32be
commit d464b0314c
1 changed files with 1 additions and 1 deletions
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2
arch/x86/platform/efi/efi_64.c
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@ -417,7 +417,7 @@ static void __init __map_region(efi_memory_desc_t *md, u64 va)
if (!(md->attribute & EFI_MEMORY_WB))
flags |= _PAGE_PCD;
if (sev_active())
if (sev_active() && md->type != EFI_MEMORY_MAPPED_IO)
flags |= _PAGE_ENC;
pfn = md->phys_addr >> PAGE_SHIFT;