From: Ingo Molnar <mingo@kernel.org>
To: Fenghua Yu <fenghua.yu@intel.com>
Cc: H Peter Anvin <hpa@zytor.com>, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] x86/apic: Disable I/O APIC before shutdown local APIC
Date: Fri, 25 Oct 2013 12:57:42 +0200 [thread overview]
Message-ID: <20131025105742.GA5485@gmail.com> (raw)
In-Reply-To: <1382578212-4677-1-git-send-email-fenghua.yu@intel.com>
* Fenghua Yu <fenghua.yu@intel.com> wrote:
> From: Fenghua Yu <fenghua.yu@intel.com>
>
> In reboot and crash path, when shutdown local APIC, I/O APIC is still active.
> This may cause issues because external interrupts can still come in and
> disturb local APIC during shutdown process. To quiet external interrupts,
> disable I/O APIC before shutdown local APIC.
What specific 'issues' were observed, on what kind of systems?
Thanks,
Ingo
next prev parent reply other threads:[~2013-10-25 10:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-24 1:30 [PATCH] x86/apic: Disable I/O APIC before shutdown local APIC Fenghua Yu
2013-10-25 10:57 ` Ingo Molnar [this message]
2013-11-06 22:32 ` Yu, Fenghua
2013-11-07 15:18 ` [tip:x86/apic] x86/apic: Disable I/ O APIC before shutdown of the " tip-bot for Fenghua Yu
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=20131025105742.GA5485@gmail.com \
--to=mingo@kernel.org \
--cc=fenghua.yu@intel.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox