Re: [RFC/PATCH, 2/4] readX_check() performance evaluation

From: Andi Kleen <ak_at_suse.de>
Date: 2004-01-29 08:52:05
On Wed, 28 Jan 2004 13:43:54 -0800 (PST)
Linus Torvalds <torvalds@osdl.org> wrote:


> Again, this is all depending on hardware implementation issues. It is 
> entirely possible that "read_pcix_error()" has to do some kind of 
> synchronization to make sure that any async operations have finished and 
> all errors have been accounted for.

I have no idea how to do such an synchronization on i386/x86-64. E.g. Opteron
chipsets would likely support MCEs for bus aborts, but there is no way to 
synchronize it for writes.

-Andi
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Received on Wed Jan 28 17:00:46 2004

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