From: Paolo Bonzini <pbonzini@redhat.com>
To: Sean Christopherson <seanjc@google.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Peter Gonda <pgonda@google.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Tom Lendacky <thomas.lendacky@amd.com>
Subject: Re: [PATCH 0/2] KVM: SVM: Final C-bit fixes?
Date: Thu, 8 Jul 2021 18:30:39 +0200 [thread overview]
Message-ID: <e406b31f-64bd-eb88-51bb-dd534719fb6e@redhat.com> (raw)
In-Reply-To: <20210625020354.431829-1-seanjc@google.com>
On 25/06/21 04:03, Sean Christopherson wrote:
> Patch 01 reverts the C-bit truncation patch as the reserved #PF was
> confirmed to be due to a magic HyperTransport region (how many magic
> addresses are there!?!). Hopefully the original patch simply be dropped,
> but just in case...
>
> Patch 02 reverts the C-bit clearing in the #NPF handler. If that somehow
> turns out to be incorrect, i.e. there are flows where the CPU doesn't
> mask off the C-bit, then it can be conditional on a SEV guest.
>
> I'll be offline for the next two weeks, fingers crossed I've undone all
> the damage. :-)
>
> Thanks!
>
> Sean Christopherson (2):
> Revert "KVM: x86: Truncate reported guest MAXPHYADDR to C-bit if SEV
> is supported"
> KVM: SVM: Revert clearing of C-bit on GPA in #NPF handler
>
> arch/x86/kvm/cpuid.c | 11 -----------
> arch/x86/kvm/svm/svm.c | 39 +++++++++------------------------------
> arch/x86/kvm/x86.c | 3 ---
> arch/x86/kvm/x86.h | 1 -
> 4 files changed, 9 insertions(+), 45 deletions(-)
>
Queued, thanks.
Paolo
prev parent reply other threads:[~2021-07-08 16:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-25 2:03 [PATCH 0/2] KVM: SVM: Final C-bit fixes? Sean Christopherson
2021-06-25 2:03 ` [PATCH 1/2] Revert "KVM: x86: Truncate reported guest MAXPHYADDR to C-bit if SEV is supported" Sean Christopherson
2021-06-25 13:28 ` Tom Lendacky
2021-06-25 2:03 ` [PATCH 2/2] KVM: SVM: Revert clearing of C-bit on GPA in #NPF handler Sean Christopherson
2021-06-25 13:26 ` Tom Lendacky
2021-07-08 16:30 ` Paolo Bonzini [this message]
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