Re: [PATCH] KVM: x86: Ensure vcpu->mode is loaded from memory in kvm_vcpu_exit_request()

[Sean Christopherson]

On Thu, Oct 31, 2024, Sean Christopherson wrote:
> On Wed, 28 Aug 2024 16:20:13 -0700, Sean Christopherson wrote:
> > Wrap kvm_vcpu_exit_request()'s load of vcpu->mode with READ_ONCE() to
> > ensure the variable is re-loaded from memory, as there is no guarantee the
> > caller provides the necessary annotations to ensure KVM sees a fresh value,
> > e.g. the VM-Exit fastpath could theoretically reuse the pre-VM-Enter value.
> 
> Applied to kvm-x86 misc, thanks!
> 
> [1/1] KVM: x86: Ensure vcpu->mode is loaded from memory in kvm_vcpu_exit_request()
>       https://github.com/kvm-x86/linux/commit/ba50bb4a9fb5

FYI, I rebased misc to v6.12-rc5, as patches in another series had already been
taken through the tip tree.  New hash:

[1/1] KVM: x86: Ensure vcpu->mode is loaded from memory in kvm_vcpu_exit_request()
      https://github.com/kvm-x86/linux/commit/3ffe874ea3eb