From: Alexey Dobriyan <adobriyan@gmail.com>
To: x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: branchless clear_page()
Date: Mon, 22 Aug 2016 23:54:58 +0300 [thread overview]
Message-ID: <20160822205458.GA2862@p183.telecom.by> (raw)
In-Reply-To: <20160822205229.GA2638@p183.telecom.by>
On Mon, Aug 22, 2016 at 11:52:29PM +0300, Alexey Dobriyan wrote:
> Apply alternatives at the call site instead of function body.
> Save branch per clean page.
>
> Bonus: tell gcc to not flush whole shebang of registers,
> just RDI, RAX, RCX.
Rename individual clear_page() functions closer to implementation
details (_c_e suffix sucks).
next prev parent reply other threads:[~2016-08-22 20:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-22 20:52 Alexey Dobriyan
2016-08-22 20:54 ` Alexey Dobriyan [this message]
2016-08-22 21:06 ` Borislav Petkov
2016-08-23 10:46 ` Alexey Dobriyan
2016-08-23 13:43 ` Brian Gerst
2016-08-23 16:15 ` Alexey Dobriyan
2016-08-23 16:19 ` [PATCH 1/3] " Alexey Dobriyan
2016-08-23 16:25 ` [PATCH 2/3] x86: support REP MOVSB copy_page() Alexey Dobriyan
2016-08-23 16:28 ` [PATCH 3/3] x86: branchless copy_page() Alexey Dobriyan
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