From: Peter Zijlstra <peterz@infradead.org>
To: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Avi Kivity <avi@scylladb.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-api <linux-api@vger.kernel.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Boqun Feng <boqun.feng@gmail.com>, Andrew Hunter <ahh@google.com>,
maged michael <maged.michael@gmail.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Dave Watson <davejwatson@fb.com>, Ingo Molnar <mingo@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrea Parri <parri.andrea@gmail.com>,
"Russell King, ARM Linux" <linux@armlinux.org.uk>,
Greg Hackmann <ghackmann@google.com>,
Will Deacon <will.deacon@arm.com>, David Sehr <sehr@google.com>,
x86 <x86@kernel.org>
Subject: Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration
Date: Tue, 14 Nov 2017 18:40:49 +0100 [thread overview]
Message-ID: <20171114174049.GF3165@worktop.lehotels.local> (raw)
In-Reply-To: <6f9f57fa-8057-cdbe-231b-20920b3b3670@redhat.com>
On Tue, Nov 14, 2017 at 06:17:13PM +0100, Daniel Bristot de Oliveira wrote:
> IIRC, if the dest cpu is idle and the system is with idle=poll, no IPI
> is fired as well, but that is not a very common case.
You're thinking about wake from idle? That is almost always without IPI,
even without idle=poll.
next prev parent reply other threads:[~2017-11-14 17:42 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-10 21:12 [RFC PATCH 0/2] x86: Fix missing core serialization on migration Mathieu Desnoyers
2017-11-10 21:12 ` [RFC PATCH 1/2] x86: Introduce sync_core_before_usermode Mathieu Desnoyers
2017-11-10 21:12 ` [RFC PATCH 2/2] Fix: x86: Add missing core serializing instruction on migration Mathieu Desnoyers
2017-11-10 21:36 ` [RFC PATCH 0/2] x86: Fix missing core serialization " Linus Torvalds
2017-11-10 21:57 ` Mathieu Desnoyers
2017-11-10 22:12 ` Linus Torvalds
2017-11-13 16:56 ` Mathieu Desnoyers
2017-11-13 17:14 ` Linus Torvalds
2017-11-14 14:53 ` Avi Kivity
2017-11-14 15:17 ` Mathieu Desnoyers
2017-11-14 15:42 ` Avi Kivity
2017-11-14 16:05 ` Peter Zijlstra
2017-11-14 16:08 ` Peter Zijlstra
2017-11-14 16:49 ` Mathieu Desnoyers
2017-11-14 17:03 ` Avi Kivity
2017-11-14 17:10 ` Mathieu Desnoyers
2017-11-14 17:31 ` Linus Torvalds
2017-11-14 16:10 ` Andy Lutomirski
2017-11-14 16:13 ` Thomas Gleixner
2017-11-14 16:16 ` Andy Lutomirski
2017-11-14 16:31 ` Peter Zijlstra
2017-11-14 17:17 ` Daniel Bristot de Oliveira
2017-11-14 17:40 ` Peter Zijlstra [this message]
2017-11-14 18:01 ` Daniel Bristot de Oliveira
2017-11-14 18:17 ` Peter Zijlstra
2017-11-14 18:24 ` Daniel Bristot de Oliveira
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=20171114174049.GF3165@worktop.lehotels.local \
--to=peterz@infradead.org \
--cc=ahh@google.com \
--cc=avi@scylladb.com \
--cc=benh@kernel.crashing.org \
--cc=boqun.feng@gmail.com \
--cc=bristot@redhat.com \
--cc=davejwatson@fb.com \
--cc=ghackmann@google.com \
--cc=hpa@zytor.com \
--cc=linux-api@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=luto@kernel.org \
--cc=maged.michael@gmail.com \
--cc=mathieu.desnoyers@efficios.com \
--cc=mingo@redhat.com \
--cc=mpe@ellerman.id.au \
--cc=parri.andrea@gmail.com \
--cc=paulmck@linux.vnet.ibm.com \
--cc=paulus@samba.org \
--cc=sehr@google.com \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=will.deacon@arm.com \
--cc=x86@kernel.org \
/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