From: Nick Piggin <npiggin@suse.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Hugh Dickins <hugh@veritas.com>,
linux-arch@vger.kernel.org,
Linux Memory Management List <linux-mm@kvack.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [rfc] data race in page table setup/walking?
Date: Fri, 2 May 2008 03:43:37 +0200 [thread overview]
Message-ID: <20080502014337.GA11844@wotan.suse.de> (raw)
In-Reply-To: <alpine.LFD.1.10.0805011832010.5994@woody.linux-foundation.org>
On Thu, May 01, 2008 at 06:33:45PM -0700, Linus Torvalds wrote:
>
>
> On Fri, 2 May 2008, Nick Piggin wrote:
> >
> > I guess it is possible. But at least in the case of write address, you'd
> > have to wait for later stores anyway in order to do the alias detection,
> > which might be the most common case.
>
> No, just the *address*. The data for the second store may not be ready,
> but the address may have been resolved (and checked that it doesn't fault
> etc) and the previous store may complete.
Yes in the case of other dependencies I agreed that it would be possible.
In the case of just address it doesn't really make sense.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
prev parent reply other threads:[~2008-05-02 1:43 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-29 5:00 Nick Piggin
2008-04-29 5:08 ` Benjamin Herrenschmidt
2008-04-29 5:41 ` Nick Piggin
2008-04-29 10:56 ` David Miller, Nick Piggin
2008-04-29 12:36 ` Hugh Dickins
2008-04-29 21:37 ` Benjamin Herrenschmidt
2008-04-29 22:47 ` Hugh Dickins
2008-04-30 0:09 ` Benjamin Herrenschmidt
2008-04-30 6:03 ` Nick Piggin
2008-04-30 6:05 ` David Miller, Nick Piggin
2008-04-30 6:17 ` Nick Piggin
2008-04-30 11:14 ` Hugh Dickins
2008-05-01 0:35 ` Nick Piggin
2008-05-01 12:45 ` Hugh Dickins
2008-04-30 15:53 ` Linus Torvalds
2008-05-01 0:29 ` Nick Piggin
2008-05-01 3:24 ` Linus Torvalds
2008-05-02 1:20 ` Nick Piggin
2008-05-02 1:33 ` Linus Torvalds
2008-05-02 1:43 ` Nick Piggin [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=20080502014337.GA11844@wotan.suse.de \
--to=npiggin@suse.de \
--cc=benh@kernel.crashing.org \
--cc=hugh@veritas.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=torvalds@linux-foundation.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