linux-kernel - [PATCH 0/2] KVM: VMX: Revert back to refreshing HOST

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Message-Id: <20220224191917.3508476-1-seanjc@google.com>
Date:   Thu, 24 Feb 2022 19:19:15 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <seanjc@...gle.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, Wanpeng Li <kernellwp@...il.com>,
        Lai Jiangshan <laijs@...ux.alibaba.com>
Subject: [PATCH 0/2] KVM: VMX: Revert back to refreshing HOST_CR3 at ->run

Revert back to refreshing vmcs.HOST_CR3 in vmx_vcpu_run(), the PCID in
CR3 can be bumped in KVM context if KVM triggers code patching of any
kind, e.g. when updating the apic_hw_disabled static key in response to
a WRMSR(APIC_BASE).

Sean Christopherson (2):
  Revert "KVM: VMX: Save HOST_CR3 in vmx_set_host_fs_gs()"
  Revert "KVM: VMX: Save HOST_CR3 in vmx_prepare_switch_to_guest()"

 arch/x86/kvm/vmx/nested.c | 11 ++++++++---
 arch/x86/kvm/vmx/vmx.c    | 28 +++++++++++++++++-----------
 arch/x86/kvm/vmx/vmx.h    |  5 ++---
 3 files changed, 27 insertions(+), 17 deletions(-)


base-commit: 8b9c948fd3c1cbd8fed00646e11651cf3d4c86cc
-- 
2.35.1.574.g5d30c73bfb-goog