From: Blaisorblade <blaisorblade@yahoo.it>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
akpm@osdl.org, jdike@addtoit.com, linux-kernel@vger.kernel.org,
user-mode-linux-devel@lists.sourceforge.net, mingo@elte.hu
Subject: [uml-devel] Re: [patch 18/39] remap_file_pages protection support: add VM_FAULT_SIGSEGV
Date: Tue, 23 Aug 2005 10:45:46 +0200 [thread overview]
Message-ID: <200508231045.50500.blaisorblade@yahoo.it> (raw)
In-Reply-To: <20050815111548.F19811@flint.arm.linux.org.uk>
On Monday 15 August 2005 12:15, Russell King wrote:
> On Mon, Aug 15, 2005 at 08:12:54PM +1000, Nick Piggin wrote:
> > Well there is now, and that is we are now using a bit in the 2nd
> > byte as flags. So I had to do away with -ve numbers there entirely.
> > You could achieve a similar thing by using another bit in that byte
> > #define VM_FAULT_FAILED 0x20
> > and make that bit present in VM_FAULT_OOM and VM_FAULT_SIGBUS, then
> > do an unlikely test for that bit in your handler and branch away to
> > the slow path.
> That'll do as well, thanks.
Note that what Nick said is about mainline kernels, not only my brave patch.
Currently Linus fixed up ARM26 by disabling the optimization: see git commit
6e346228c76506e07e297744a28464022c6806ad.
--
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade
___________________________________
Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB
http://mail.yahoo.it
-------------------------------------------------------
SF.Net email is Sponsored by the Better Software Conference & EXPO
September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
WARNING: multiple messages have this Message-ID (diff)
From: Blaisorblade <blaisorblade@yahoo.it>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
akpm@osdl.org, jdike@addtoit.com, linux-kernel@vger.kernel.org,
user-mode-linux-devel@lists.sourceforge.net, mingo@elte.hu
Subject: Re: [patch 18/39] remap_file_pages protection support: add VM_FAULT_SIGSEGV
Date: Tue, 23 Aug 2005 10:45:46 +0200 [thread overview]
Message-ID: <200508231045.50500.blaisorblade@yahoo.it> (raw)
In-Reply-To: <20050815111548.F19811@flint.arm.linux.org.uk>
On Monday 15 August 2005 12:15, Russell King wrote:
> On Mon, Aug 15, 2005 at 08:12:54PM +1000, Nick Piggin wrote:
> > Well there is now, and that is we are now using a bit in the 2nd
> > byte as flags. So I had to do away with -ve numbers there entirely.
> > You could achieve a similar thing by using another bit in that byte
> > #define VM_FAULT_FAILED 0x20
> > and make that bit present in VM_FAULT_OOM and VM_FAULT_SIGBUS, then
> > do an unlikely test for that bit in your handler and branch away to
> > the slow path.
> That'll do as well, thanks.
Note that what Nick said is about mainline kernels, not only my brave patch.
Currently Linus fixed up ARM26 by disabling the optimization: see git commit
6e346228c76506e07e297744a28464022c6806ad.
--
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade
___________________________________
Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB
http://mail.yahoo.it
next prev parent reply other threads:[~2005-08-26 15:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-12 18:21 [uml-devel] [patch 18/39] remap_file_pages protection support: add VM_FAULT_SIGSEGV blaisorblade
2005-08-12 18:21 ` blaisorblade
2005-08-15 9:40 ` [uml-devel] " Russell King
2005-08-15 9:40 ` Russell King
2005-08-15 10:12 ` [uml-devel] " Nick Piggin
2005-08-15 10:12 ` Nick Piggin
2005-08-15 10:15 ` [uml-devel] " Russell King
2005-08-15 10:15 ` Russell King
2005-08-15 10:25 ` Russell King
2005-08-23 8:45 ` Blaisorblade [this message]
2005-08-23 8:45 ` Blaisorblade
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=200508231045.50500.blaisorblade@yahoo.it \
--to=blaisorblade@yahoo.it \
--cc=akpm@osdl.org \
--cc=jdike@addtoit.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=nickpiggin@yahoo.com.au \
--cc=rmk+lkml@arm.linux.org.uk \
--cc=user-mode-linux-devel@lists.sourceforge.net \
/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.