Messages in this thread | | | Date | Wed, 14 Feb 2007 17:04:44 -0500 | From | Benjamin LaHaise <> | Subject | Re: [patch] x86: split FPU state from task state |
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On Wed, Feb 14, 2007 at 10:49:44PM +0100, Ingo Molnar wrote: > this can very much be done, with a straightforward extension of how we > handle FPU state. That makes sense independently of syslets/async as > well, so find below the standalone patch from Arjan. It's in my current > syslet queue and works great.
That patch adds a bunch of memory dereferences and another allocation to the thread creation code path -- a tax that all users must pay. Granted, it's small, but at the very least should be configurable out for the 99.9% of users that will never use this functionality.
I'm willing to be convinced, it's just that I would like to see some numbers that scream out that this is a good thing.
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