From: Sean Christopherson <seanjc@google.com>
To: Peng Hao <flyingpenghao@gmail.com>
Cc: pbonzini@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] kvm:vmx: Fix typos comment in __loaded_vmcs_clear()
Date: Tue, 22 Feb 2022 15:18:24 +0000 [thread overview]
Message-ID: <YhT+wOc18G7Twujw@google.com> (raw)
In-Reply-To: <20220222104029.70129-1-flyingpeng@tencent.com>
Needs a space on this shortlog too. And please capitalize both KVM and VMX.
Again, no need to send another version.
On Tue, Feb 22, 2022, Peng Hao wrote:
> From: Peng Hao <flyingpeng@tencent.com>
>
> Fix a comment documenting the memory barrier related to clearing a
> loaded_vmcs; loaded_vmcs tracks the host CPU the VMCS is loaded on via
> the field 'cpu', it doesn't have a 'vcpu' field.
>
> Reviewed-by: Sean Christopherson <seanjc@google.com>
> Signed-off-by: Peng Hao <flyingpeng@tencent.com>
> ---
> arch/x86/kvm/vmx/vmx.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
> index 6101c2980a9c..75ed7d6f35cc 100644
> --- a/arch/x86/kvm/vmx/vmx.c
> +++ b/arch/x86/kvm/vmx/vmx.c
> @@ -644,10 +644,10 @@ static void __loaded_vmcs_clear(void *arg)
>
> /*
> * Ensure all writes to loaded_vmcs, including deleting it from its
> - * current percpu list, complete before setting loaded_vmcs->vcpu to
> - * -1, otherwise a different cpu can see vcpu == -1 first and add
> - * loaded_vmcs to its percpu list before it's deleted from this cpu's
> - * list. Pairs with the smp_rmb() in vmx_vcpu_load_vmcs().
> + * current percpu list, complete before setting loaded_vmcs->cpu to
> + * -1, otherwise a different cpu can see loaded_vmcs->cpu == -1 first
> + * and add loaded_vmcs to its percpu list before it's deleted from this
> + * cpu's list. Pairs with the smp_rmb() in vmx_vcpu_load_vmcs().
> */
> smp_wmb();
>
> --
> 2.27.0
>
next prev parent reply other threads:[~2022-02-22 15:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-22 10:40 [PATCH v2] kvm:vmx: Fix typos comment in __loaded_vmcs_clear() Peng Hao
2022-02-22 15:18 ` Sean Christopherson [this message]
2022-02-24 14:24 ` Paolo Bonzini
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