linux-kernel - [PATCH v2 0/2] KVM: nSVM: few fixes for the nested migration

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Message-Id: <20210504143936.1644378-1-mlevitsk@redhat.com>
Date:   Tue,  4 May 2021 17:39:34 +0300
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     kvm@...r.kernel.org
Cc:     Borislav Petkov <bp@...en8.de>,
        Paolo Bonzini <pbonzini@...hat.com>,
        x86@...nel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org, Cathy Avery <cavery@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Joerg Roedel <joro@...tes.org>,
        Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH v2 0/2] KVM: nSVM: few fixes for the nested migration

Those are few fixes for issues I uncovered by doing variants of a
synthetic migration test I just created:

I modified the qemu, such that on each vm pause/resume cycle,
just prior to resuming a vCPU, qemu reads its KVM state,
then (optionaly) resets this state by uploading a
dummy reset state to KVM, and then it uploads back to KVM,
the state that this vCPU had before.

V2: those are only last 2 patches from V1,
updated with review feedback from Paolo (Thanks!).

Best regards,
	Maxim Levitsky

Maxim Levitsky (2):
  KVM: nSVM: always restore the L1's GIF on migration
  KVM: nSVM: remove a warning about vmcb01 VM exit reason

 arch/x86/kvm/svm/nested.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.26.2