linux-kernel - Re: [PATCH 1/2] x86-64: Simplify cpu_has

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]

Message-ID: <4E19ED0A.9000709@zytor.com>
Date:	Sun, 10 Jul 2011 11:18:50 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Brian Gerst <brgerst@...il.com>
CC:	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] x86-64: Simplify cpu_has_invlpg

On 07/10/2011 06:53 AM, Brian Gerst wrote:
> Define CONFIG_X86_INVLPG for 64-bit too, which simplifies the code.
> 
> Signed-off-by: Brian Gerst <brgerst@...il.com>

I think a much better way to do this kind of stuff is to define
Linux-specific CPU feature bits (which we already have quite a few of).
 That way they fall into the same mechanism as everything else that has
switches on CPU features, we can use alternatives, and so on.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

--
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/