linux-kernel - Re: [patch 11/14] Powerpc: Use generic per cpu

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: <F81BD9A7-9D76-4C2C-AF80-AAA3F70F061E@kernel.crashing.org>
Date:	Tue, 27 Nov 2007 01:41:55 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Christoph Lameter <clameter@....com>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Paul Mackerras <paulus@...ba.org>
Subject: Re: [patch 11/14] Powerpc: Use generic per cpu


On Nov 26, 2007, at 6:14 PM, Christoph Lameter wrote:

> Powerpc has a way to determine the address of the per cpu area of the
> currently executing processor via the paca and the array of per cpu
> offsets is avoided by looking up the per cpu area from the remote
> paca's (copying x86_64).
>
> Cc: Paul Mackerras <paulus@...ba.org>
> Signed-off-by: Christoph Lameter <clameter@....com>
>
> ---
> include/asm-powerpc/percpu.h |   19 -------------------
> 1 file changed, 19 deletions(-)
>
> Index: linux-2.6/include/asm-powerpc/percpu.h
> ===================================================================
> --- linux-2.6.orig/include/asm-powerpc/percpu.h	2007-11-24  
> 10:27:31.088350556 -0800
> +++ linux-2.6/include/asm-powerpc/percpu.h	2007-11-24  
> 10:29:20.752350757 -0800
> @@ -16,25 +16,6 @@
> #define __my_cpu_offset() get_paca()->data_offset
> #define per_cpu_offset(x) (__per_cpu_offset(x))

This concerns me.  paca doesn't exist on all PPC platforms.

- k
-
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/