[RFC PATCH v1 14/28] x86: Don't set the SME MSR bit when SEV is active
From: Brijesh Singh <hidden>
Date: 2016-08-22 23:59:16
Also in:
kvm, linux-efi, lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
From: Tom Lendacky <thomas.lendacky@amd.com> When SEV is active the virtual machine cannot set the MSR for SME, so don't set the trampoline flag for SME. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> --- arch/x86/realmode/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c
index f3207e5..391d8ba 100644
--- a/arch/x86/realmode/init.c
+++ b/arch/x86/realmode/init.c@@ -102,7 +102,7 @@ static void __init setup_real_mode(void) *trampoline_cr4_features = mmu_cr4_features; trampoline_header->flags = 0; - if (sme_me_mask) + if (sme_me_mask && !sev_active) trampoline_header->flags |= TH_FLAGS_SME_ENABLE; trampoline_pgd = (u64 *) __va(real_mode_header->trampoline_pgd); --
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