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

From: Sean Christopherson
Date: Thu Oct 31 2024 - 15:56:18 EST


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

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https://github.com/kvm-x86/linux/tree/next