KVM: VMX: Revert back to refreshing HOST_CR3 at ->run

[PATCH 0/2] KVM: VMX: Revert back to refreshing HOST_CR3 at ->run

Sean Christopherson posted 2 patches 4 years, 3 months ago

Download series mbox

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(-)

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[PATCH 0/2] KVM: VMX: Revert back to refreshing HOST_CR3 at ->run

Posted by Sean Christopherson 4 years, 3 months ago

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

Re: [PATCH 0/2] KVM: VMX: Revert back to refreshing HOST_CR3 at ->run

Posted by Paolo Bonzini 4 years, 3 months ago

Queued, thanks.

Paolo