From mboxrd@z Thu Jan 1 00:00:00 1970 From: Randolph Chung Subject: Re: [parisc-linux] 2.6.10-rc1-pa11 profile data Date: Thu, 11 Nov 2004 09:59:33 -0800 Message-ID: <20041111175933.GU15714@tausq.org> References: <20041111075431.GB9768@colo.lackof.org> <20041111081154.GR15714@tausq.org> <20041111173901.GX2639@baldric.uwo.ca> <20041111174258.GT15714@tausq.org> <20041111175021.GA26623@parcelfarce.linux.theplanet.co.uk> Reply-To: Randolph Chung Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: parisc-linux@lists.parisc-linux.org To: Matthew Wilcox Return-Path: In-Reply-To: <20041111175021.GA26623@parcelfarce.linux.theplanet.co.uk> List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: parisc-linux-bounces@lists.parisc-linux.org > 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/ _______________________________________________ parisc-linux mailing list parisc-linux@lists.parisc-linux.org http://lists.parisc-linux.org/mailman/listinfo/parisc-linux