From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Chao Gao <chao.gao@intel.com>
Subject: Re: [PATCH] KVM: x86: Do not change ICR on write to APIC_SELF_IPI
Date: Thu, 24 Feb 2022 15:28:54 +0000 [thread overview]
Message-ID: <YhekNhrK7VKW1jDV@google.com> (raw)
In-Reply-To: <20220224145403.2254840-1-pbonzini@redhat.com>
On Thu, Feb 24, 2022, Paolo Bonzini wrote:
> Emulating writes to SELF_IPI with a write to ICR has an unwanted side effect:
> the value of ICR in vAPIC page gets changed. The lists SELF_IPI as write-only,
^
|- SDM
> with no associated MMIO offset, so any write should have no visible side
> effect in the vAPIC page.
>
> Reported-by: Chao Gao <chao.gao@intel.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
Reviewed-by: Sean Christopherson <seanjc@google.com>
prev parent reply other threads:[~2022-02-24 15:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-24 14:54 [PATCH] KVM: x86: Do not change ICR on write to APIC_SELF_IPI Paolo Bonzini
2022-02-24 15:28 ` Sean Christopherson [this message]
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