linux-kernel - Re: [PATCH v2 4/6] x86: Add clear_page

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: <20120809152620.GH2644@tassilo.jf.intel.com>
Date:	Thu, 9 Aug 2012 08:26:20 -0700
From:	Andi Kleen <ak@...ux.intel.com>
To:	Jan Beulich <JBeulich@...e.com>
Cc:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	x86@...nel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/6] x86: Add clear_page_nocache

> While on 64-bit this is fine, I fail to see how you avoid using the
> SSE2 instruction on non-SSE2 systems.

You're right, this needs a fallback path for 32bit non sse
(and fixing the ABI)

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only
--
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/