Re: [PATCH v2 0/7] KVM: nVMX: Bug fixes and cleanup

[Paolo Bonzini]

On 23/09/20 20:44, Sean Christopherson wrote:
> Fix for a brutal segment caching bug that manifested as random nested
> VM-Enter failures when running with unrestricted guest disabled.  A few
> more bug fixes and cleanups for stuff found by inspection when hunting
> down the caching issue.
> 
> v2:
>   - Rebased to kvm/queue, commit e1ba1a15af73 ("KVM: SVM: Enable INVPCID
>     feature on AMD").
> 
> Sean Christopherson (7):
>   KVM: nVMX: Reset the segment cache when stuffing guest segs
>   KVM: nVMX: Reload vmcs01 if getting vmcs12's pages fails
>   KVM: nVMX: Explicitly check for valid guest state for !unrestricted
>     guest
>   KVM: nVMX: Move free_nested() below vmx_switch_vmcs()
>   KVM: nVMX: Ensure vmcs01 is the loaded VMCS when freeing nested state
>   KVM: nVMX: Drop redundant VMCS switch and free_nested() call
>   KVM: nVMX: WARN on attempt to switch the currently loaded VMCS
> 
>  arch/x86/kvm/vmx/nested.c | 103 ++++++++++++++++++++------------------
>  arch/x86/kvm/vmx/vmx.c    |   8 +--
>  arch/x86/kvm/vmx/vmx.h    |   9 ++++
>  3 files changed, 65 insertions(+), 55 deletions(-)
> 

Queued, thanks.

Paolo