From: Linus Torvalds <torvalds@linux-foundation.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>,
Ingo Molnar <mingo@kernel.org>, Len Brown <lenb@kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [patch] x86, tlb: switch cr3 in leave_mm() only when needed
Date: Thu, 22 Mar 2012 17:37:03 -0700 [thread overview]
Message-ID: <CA+55aFygUGmL0iCKYn5DBitrPSm0GHZ8e5j0j2OzcBcAkUMiFw@mail.gmail.com> (raw)
In-Reply-To: <4F6BC1C4.6050502@zytor.com>
On Thu, Mar 22, 2012 at 5:20 PM, H. Peter Anvin <hpa@zytor.com> wrote:
>
> Looks great to me. Linus, do you want this one later in the window if
> it tests out OK between now and then, or is it too late?
It's small and trivial, so it's fine. I *would* like to hear whether
it actually makes any real difference, though. I do see "intel_idle()"
as a big cost in idle profiles, and I assume that translates to power
use too, but if you guys have some actual numbers, that would be even
better.
Linus
next prev parent reply other threads:[~2012-03-23 0:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-22 23:33 [patch] x86, tlb: switch cr3 in leave_mm() only when needed Suresh Siddha
2012-03-22 23:44 ` Linus Torvalds
2012-03-23 0:01 ` Suresh Siddha
2012-03-23 0:20 ` H. Peter Anvin
2012-03-23 0:37 ` Linus Torvalds [this message]
2012-03-23 0:51 ` Suresh Siddha
2012-03-23 8:37 ` Ingo Molnar
2012-03-26 22:47 ` Suresh Siddha
2012-03-26 22:47 ` H. Peter Anvin
2012-03-23 0:31 ` [tip:x86/mm] x86, tlb: Switch " tip-bot for Suresh Siddha
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=CA+55aFygUGmL0iCKYn5DBitrPSm0GHZ8e5j0j2OzcBcAkUMiFw@mail.gmail.com \
--to=torvalds@linux-foundation.org \
--cc=hpa@zytor.com \
--cc=lenb@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=suresh.b.siddha@intel.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.