From: takada <takada@mbf.nifty.com>
To: rdreier@cisco.com
Cc: lsorense@csclub.uwaterloo.ca, pcnet32@verizon.net,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: MediaGX/GeodeGX1 requires X86_OOSTORE.
Date: Tue, 20 Feb 2007 08:56:39 +0900 (JST) [thread overview]
Message-ID: <20070220.085639.260788422.takada@mbf.nifty.com> (raw)
In-Reply-To: <ada3b5253p0.fsf@cisco.com>
From: Roland Dreier <rdreier@cisco.com>
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
next prev parent reply other threads:[~2007-02-19 23:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <32943920.1119801171642884331.JavaMail.root@vms226.mailsrvcs.net>
[not found] ` <20070216172110.GC7582@csclub.uwaterloo.ca>
[not found] ` <20070216202300.GD7585@csclub.uwaterloo.ca>
[not found] ` <20070216210157.GE7585@csclub.uwaterloo.ca>
[not found] ` <20070216222728.GF7585@csclub.uwaterloo.ca>
2007-02-16 22:48 ` MediaGX/GeodeGX1 requires X86_OOSTORE. (Was: Re: Strange connection slowdown on pcnet32) Lennart Sorensen
2007-02-17 0:00 ` Lennart Sorensen
2007-02-17 14:11 ` MediaGX/GeodeGX1 requires X86_OOSTORE takada
2007-02-17 15:07 ` Lennart Sorensen
2007-02-19 14:55 ` Lennart Sorensen
2007-02-19 19:48 ` Roland Dreier
2007-02-19 19:57 ` Lennart Sorensen
2007-02-19 23:56 ` takada [this message]
2007-02-20 0:02 ` Lennart Sorensen
2007-02-20 11:34 ` takada
2007-02-20 14:48 ` Lennart Sorensen
2007-03-15 5:39 ` takada
2007-03-15 17:31 ` Lennart Sorensen
2007-03-17 13:08 ` takada
2007-03-19 18:23 ` Lennart Sorensen
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