Messages in this thread | | | Date | Tue, 16 Sep 2003 14:30:19 +0100 | From | Dave Jones <> | Subject | Re: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata |
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On Tue, Sep 16, 2003 at 12:46:36PM +0100, Jamie Lokier wrote:
> > The user space problem worries me more, because the expectation > > is that if CPUID says the program can use perfetch, it could > > and should regardless of what the kernel decided to do here. > > If the workaround isn't compiled in, "prefetch" should be removed from > /proc/cpuinfo on the buggy chips.
prefetch isn't a cpuid feature flag. The only way you could do what you suggest is by removing '3dnow' or 'sse', which cripples things more than necessary.
Dave
-- Dave Jones http://www.codemonkey.org.uk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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