Re: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata

[Dave Jones]

On Thu, Sep 11, 2003 at 04:24:21PM +0200, Andi Kleen wrote:
 > I considered that when writing the patch, but: is_prefetch is a single byte 
 > memory access for something already in cache. Checking for an Athlon
 > CPU needs two memory accesses in boot_cpu_data at least (checking vendor
 > and model) 

You only need to check it once when the path is first taken, and then
set a variable that makes you exit as soon as you enter it again.

		Dave

-- 
 Dave Jones     http://www.codemonkey.org.uk
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