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Date: Fri, 04 May 2007 19:45:38 -0600 From: ebiederm@...ssion.com (Eric W. Biederman) To: "H. Peter Anvin" <hpa@...or.com> Cc: Jeremy Fitzhardinge <jeremy@...p.org>, Rusty Russell <rusty@...tcorp.com.au>, Andi Kleen <ak@...e.de>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] i386: always clear bss "H. Peter Anvin" <hpa@...or.com> writes: > Eric W. Biederman wrote: >> >> My notes show 0x5c reserved for additional apm_bios_info, although >> of the top of my head I don't know how realistic that is. >> >> 0x1e4 does look available. >> >> It has been a long time since I made that choice, and I do see that >> looking at struct screen_info I did remember to document that I was >> using 0x3c, even in your structure. >> >> It is all internal to our boot process and external code isn't going >> to use it so we can change it if we feel like. >> > > I don't see the actual instruction that does that anywhere in my tree, > which was branched from Andi's "for-linus" git tree, but I have reserved > 0x1e4 for that purpose as "scratch". I have this vague memory of liking 0x3c because if we do happen to use more room then we intended the consequences are pretty benign. But that is a pretty minor consequence. Eric - 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/
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