linux-kernel - [PATCH 0/3] Few nSVM bugfixes

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Message-Id: <20200827162720.278690-1-mlevitsk@redhat.com>
Date:   Thu, 27 Aug 2020 19:27:17 +0300
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     kvm@...r.kernel.org
Cc:     Borislav Petkov <bp@...en8.de>,
        x86@...nel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
        Paolo Bonzini <pbonzini@...hat.com>,
        linux-kernel@...r.kernel.org, Joerg Roedel <joro@...tes.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Ingo Molnar <mingo@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Maxim Levitsky <mlevitsk@...hat.com>
Subject: [PATCH 0/3] Few nSVM bugfixes

This patch series contains few nested SVM fixes from
testing I did this weekend.

Patch #1 fixes issue where we were setting the GIF (global interrupt flag)
on first nested VMexit, after migration thus making the nested guest crash
from unexpected interrupts.

Patch #2 is my observation that we never setup nesed msr bitmap on nested
state load after migration.

Patch #3 was 'migrated' ;-) from my other patch series to make it smaller,
which is about more strict checks when we about to return to a nested guest,
from SMM.

Best regards,
	Maxim Levitsky

Maxim Levitsky (3):
  SVM: nSVM: correctly restore GIF on vmexit from nesting after
    migration
  SVM: nSVM: setup nested msr permission bitmap on nested state load
  KVM: nSVM: more strict SMM checks when returning to nested guest

 arch/x86/kvm/svm/nested.c |  7 ++++++-
 arch/x86/kvm/svm/svm.c    | 29 ++++++++++++++++++-----------
 2 files changed, 24 insertions(+), 12 deletions(-)

-- 
2.26.2