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From: "David B. Stevens" <dsteven3@maine.rr.com>
To: Dave Jones <davej@redhat.com>
Cc: Jamie Lokier <jamie@shareable.org>,
	michaelc <michaelc@turbolinux.com.cn>,
	linux-kernel@vger.kernel.org
Subject: Re: about PENTIUM4 cache line
Date: Sun, 17 Aug 2003 16:58:27 -0400	[thread overview]
Message-ID: <3F3FEC73.9010206@maine.rr.com> (raw)
In-Reply-To: <20030817204514.GB2225@redhat.com>

Dave,

Thanks that explains it.

The layout as well as the size needs to be taken into account.

Cheers,
   Dave




Dave Jones wrote:
> On Sun, Aug 17, 2003 at 04:36:51PM -0400, David B. Stevens wrote:
>  > What's even more interesting is the following:
> 
> why ?
> 
>  > tux:/usr/src/linux-2.6.0-test3 # grep -r "CONFIG_X86_L1_CACHE_SHIFT" *
>  > arch/i386/defconfig:CONFIG_X86_L1_CACHE_SHIFT=7
>  > arch/x86_64/defconfig:CONFIG_X86_L1_CACHE_SHIFT=6
> 
> correct default values for P4 and Hammer respectively.
> 
>  > include/asm-x86_64/cache.h:#define L1_CACHE_SHIFT 
>  > (CONFIG_X86_L1_CACHE_SHIFT)
> 
> Looks sane.
> 
>  > include/linux/autoconf.h:#define CONFIG_X86_L1_CACHE_SHIFT 5
> 
> compile-time generated from .config
> 
>  > include/asm-i386/cache.h:#define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT)
>  > include/asm/cache.h:#define L1_CACHE_SHIFT      (CONFIG_X86_L1_CACHE_SHIFT)
> 
> looks sane
> 
>  > include/config/x86/l1/cache/shift.h:#define CONFIG_X86_L1_CACHE_SHIFT 5
> 
> compile time generated from .config.
> 
> 		Dave
> 



  reply	other threads:[~2003-08-17 20:56 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-03-09  9:03 about PENTIUM4 cache line michaelc
2001-08-08 11:52 ` shutdown on pressing the ATX power button Sergei Haller
2001-08-09 17:56   ` Pavel Machek
2003-08-17 20:25 ` about PENTIUM4 cache line Jamie Lokier
2003-08-17 20:36   ` David B. Stevens
2003-08-17 20:45     ` Dave Jones
2003-08-17 20:58       ` David B. Stevens [this message]
2003-08-17 20:42   ` Dave Jones
2003-08-17 22:52   ` Philippe Elie

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