linux-kernel - Re: [PATCH v2 13/25] powerpc/8xx: also use r3 in the ITLB miss in all situations

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: <20150929000039.GG6161@home.buserror.net>
Date:	Mon, 28 Sep 2015 19:00:39 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Christophe Leroy <christophe.leroy@....fr>
CC:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	<linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH v2 13/25] powerpc/8xx: also use r3 in the ITLB miss in
 all situations

On Tue, Sep 22, 2015 at 06:50:54PM +0200, Christophe Leroy wrote:
> We are spending between 40 and 160 cycles with a mean of 65 cycles
> in the TLB handling routines (measured with mftbl) so make it more
> simple althought it adds one instruction
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
> ---
> No change in v2
> 
>  arch/powerpc/kernel/head_8xx.S | 15 ++++-----------
>  1 file changed, 4 insertions(+), 11 deletions(-)

Why is this a separate patch from 1/25?

Same comments as on that patch.

-Scott
--
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/