linux-kernel - Re: [PATCH] x86: cacheinfo: complete L2/L3 Cache and TLB associativity field definitions

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Message-ID: <20090402103008.GA10828@elte.hu>
Date:	Thu, 2 Apr 2009 12:30:08 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andreas Herrmann <andreas.herrmann3@....com>,
	Mark Langsdorf <mark.langsdorf@....com>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: cacheinfo: complete L2/L3 Cache and TLB
	associativity field definitions


* Andreas Herrmann <andreas.herrmann3@....com> wrote:

> Impact: complete cache information for AMD CPUs
> 
> See "CPUID Specification" (AMD Publication #: 25481, Rev. 2.28, April 2008)
> 
> Signed-off-by: Andreas Herrmann <andreas.herrmann3@....com>
> ---
>  arch/x86/kernel/cpu/intel_cacheinfo.c |   16 ++++++++++++----
>  1 files changed, 12 insertions(+), 4 deletions(-)
> 
> Please apply.

Hm, the x86/cpu topic is marked broken and blocked by another AMD 
patch from Mark Langsdorf:

 45ca863: x86, cpu: conform L3 Cache Index Disable to Linux standards

We cannot queue up new patches there before this one is fixed. I've 
attached below my last bugreport about it.

	Ingo

----- Forwarded message from Ingo Molnar <mingo@...e.hu> -----

Date: Thu, 19 Mar 2009 09:18:37 +0100
From: Ingo Molnar <mingo@...e.hu>
To: Mark Langsdorf <mark.langsdorf@....com>
Subject: Re: [PATCH][retry 5] Conform L3 Cache Index Disable to Linux
	Standards
Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org,
	eric@...merts.org, hpa@...or.com


* Mark Langsdorf <mark.langsdorf@....com> wrote:

> Add ABI Documentation entry and fix some /sys directory formating
> issues with the L3 Cache Index Disable feature for future AMD
> processors.  Add a check to disable it for family 0x10 models
> that do not support it properly.  Correct the disable algorithm
> to reflect erratum 388.
>     
> Signed-off-by: Mark Langsdorf <mark.langsdorf@....com>

i'm still getting this build failure:

 arch/x86/mm/built-in.o:(.bss+0x3640): multiple definition of `k8_northbridges'

i've reported this build failure before. I've excluded this commit 
from tip:master for now.

	Ingo

----- End forwarded message -----

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