Re: [Part2 PATCH v6 23/38] KVM: SVM: Reserve ASID range for SEV guest

From: Borislav Petkov
Date: Fri Oct 27 2017 - 16:23:37 EST


On Thu, Oct 19, 2017 at 09:33:58PM -0500, Brijesh Singh wrote:
> A SEV-enabled guest must use ASIDs from the defined subset, while non-SEV
> guests can use the remaining ASID range. The range of allowed SEV guest
> ASIDs is [1 - CPUID_8000_001F[ECX][31:0]].
>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Cc: "Radim KrÄmÃÅ" <rkrcmar@xxxxxxxxxx>
> Cc: Joerg Roedel <joro@xxxxxxxxxx>
> Cc: Borislav Petkov <bp@xxxxxxx>
> Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
> Cc: x86@xxxxxxxxxx
> Cc: kvm@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Improvements-by: Borislav Petkov <bp@xxxxxxx>
> Signed-off-by: Brijesh Singh <brijesh.singh@xxxxxxx>
> ---
> arch/x86/kvm/svm.c | 23 ++++++++++++++++++++++-
> 1 file changed, 22 insertions(+), 1 deletion(-)

Reviewed-by: Borislav Petkov <bp@xxxxxxx>

--
Regards/Gruss,
Boris.

ECO tip #101: Trim your mails when you reply.
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