linux-kernel - Re: [PATCH 1/5] x86-32: Split cache flush handler from simd handler

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] [day] [month] [year] [list]

Date:	Sat, 20 Mar 2010 11:53:23 -0700
From:	"H. Peter Anvin" <hpa@...nel.org>
To:	Brian Gerst <brgerst@...il.com>
CC:	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] x86-32: Split cache flush handler from simd handler

On 03/19/2010 09:55 PM, H. Peter Anvin wrote:
> 
> Ah, guess it was even older than I first realized ... I should have
> searched for the string "cache flush denied" instead.
> 
> Sounds like we should do three things:
> 
> a) update the comment to actually reflect what is going on;
> b) compile it out for > 486;
> c) report the error as trap 13 rather than 19.
> 

Actually what we should do is recognize that this is nothing other than
a misdirected #GP, and as a result send the fault down the #GP handler
(do_general_protection)... there really isn't any need for a special
routine at all.

	-hpa
--
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/