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From: Randolph Chung <randolph@tausq.org>
To: Matthew Wilcox <matthew@wil.cx>
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] 2.6.10-rc1-pa11 profile data
Date: Thu, 11 Nov 2004 09:59:33 -0800	[thread overview]
Message-ID: <20041111175933.GU15714@tausq.org> (raw)
In-Reply-To: <20041111175021.GA26623@parcelfarce.linux.theplanet.co.uk>

> As I'm sure you already know, we do have to be careful to avoid leaking
> kernel-internal or another task's information in the registers that
> are call-clobbered.  I know some architectures do this by having a
> kernel exit path that deliberately clobbers as many registers as possible.

sure, we can zero all the call clobbered registers on exit. But not
having to save all of those pesky floating pointer registers and half a
dozen general registers should still be a huge win.

randolph
-- 
Randolph Chung
Debian GNU/Linux Developer, hppa/ia64 ports
http://www.tausq.org/
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  reply	other threads:[~2004-11-11 17:59 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-11  7:54 [parisc-linux] 2.6.10-rc1-pa11 profile data Grant Grundler
2004-11-11  8:11 ` Randolph Chung
2004-11-11 17:39   ` Carlos O'Donell
2004-11-11 17:42     ` Randolph Chung
2004-11-11 17:50       ` Matthew Wilcox
2004-11-11 17:59         ` Randolph Chung [this message]
2004-11-11 18:36           ` Grant Grundler
2004-11-11 18:23   ` Joel Soete
2004-11-11 18:51     ` Randolph Chung
2004-11-26 16:59   ` flush_kernel_[di]cache_page question? [WAS: " Joel Soete
2004-11-26 17:13     ` Randolph Chung
2004-11-26 19:02     ` Grant Grundler
2004-11-28 21:01   ` [id]cache meaning? [Was: [parisc-linux] 2.6.10-rc1-pa11 profile data] Joel Soete
2004-11-28 21:13     ` Matthew Wilcox
2004-11-29  1:14       ` Michael S. Zick
2004-11-29  2:00         ` Matthew Wilcox
2004-12-01 17:44   ` More questions " Joel Soete
2004-12-01 17:56     ` Matthew Wilcox
2004-12-01 18:33       ` Joel Soete
2004-12-03 10:24     ` Joel Soete
2004-12-03 15:41       ` Randolph Chung
2004-12-07 14:42         ` Joel Soete
2004-12-03 15:00   ` *lcul and memory granularity question[Was: " Joel Soete
2004-12-03 15:13     ` Matthew Wilcox
2004-11-12  5:29 ` [parisc-linux] 2.6.10-rc1-pa11 profile data Grant Grundler

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