linux-kernel - [PATCH 0/2] KVM: nVMX: Skip IPBP on nested VMCS switch

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Date:   Wed,  6 May 2020 16:58:48 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] KVM: nVMX: Skip IPBP on nested VMCS switch

Or as Jim would say, "Really skip IPBP on nested VMCS switch" :-D

Patch 1 is the delta between kvm/queue and v3 of the original patch[*],
i.e. I just cherry-picked v3 and fixed the conflicts.

Patch 2 applies the "no IPBP" logic to copy_vmcs02_to_vmcs12_rare().

Feel free to sqaush both of these to commit 7407a52f23732 ("KVM: nVMX:
Skip IBPB when switching between vmcs01 and vmcs02") if you so desire.

[*] https://lkml.kernel.org/r/20200505044644.16563-1-sean.j.christopherson@intel.com

Sean Christopherson (2):
  KVM: nVMX: Refactor IBPB handling on VMCS switch to genericize code
  KVM: nVMX: Skip IPBP when switching between vmcs01 and vmcs02, redux

 arch/x86/kvm/vmx/nested.c | 13 +++----------
 arch/x86/kvm/vmx/vmx.c    | 19 ++++++++++++++-----
 arch/x86/kvm/vmx/vmx.h    |  4 ++--
 3 files changed, 19 insertions(+), 17 deletions(-)

-- 
2.26.0