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]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YhekNhrK7VKW1jDV@google.com \
--to=seanjc@google.com \
--cc=chao.gao@intel.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pbonzini@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.