linux-kernel - Re: [RFC PATCH] x86-64: software IRQ masking and handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 12 Jul 2010 11:49:57 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Tejun Heo <tj@...nel.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	"the arch/x86 maintainers" <x86@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [RFC PATCH] x86-64: software IRQ masking and handling

On Mon, 12 Jul 2010 05:59:48 am Linus Torvalds wrote:
> On Sun, Jul 11, 2010 at 11:01 AM, Tejun Heo <tj@...nel.org> wrote:
> >
> > I just got it working and it behaves pretty good on qemu.  Actual
> > machines can't idle but seem to work otherwise.  I'll fix up idle, get
> > paravirt working and try to get some perf measurements but I'll be
> > mostly off next week, so it will take some time.  In the meantime,
> > what do you guys think?
> 
> You need to show some real improvement on real hardware.

Also, is it worth trying to implement this soft disable generically?
I know at least ppc64 does it today...

(Y'know, because your initial patch wasn't ambitious enough...)

It might reduce the use of NMIs.  But maybe not.

Cheers,
Rusty.
PS.  When did we start top-commenting and quoting the whole patch?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/