From: Roland Dreier <[email protected]>
Subject: Re: MediaGX/GeodeGX1 requires X86_OOSTORE.
Date: Mon, 19 Feb 2007 11:48:27 -0800
> > Does anyone know if there is any way to flush a cache line of the cpu to
> > force rereading system memory for a given address or address range?
>
> There is the "clflush" instruction, but not all x86 CPUs support it.
> You need to check the CPUID flag to know for sure (/proc/cpuinfo will
> show a "clflush" flag if it is supported).
/proc/cpuinfo with MediaGXm :
processor : 0
vendor_id : CyrixInstead
cpu family : 5
model : 5
model name : Cyrix MediaGXtm MMXtm Enhanced
stepping : 2
cpu MHz : 199.750
cache size : 16 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu tsc msr cx8 cmov mmx cxmmx
bogomips : 401.00
clflush size : 32
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