Messages in this thread | | | Date | Thu, 15 Jul 2010 12:28:19 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH] x86: fix ordering constraints on crX read/writes |
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On 07/15/2010 11:54 AM, H. Peter Anvin wrote: > No, we haven't. You're misunderstanding what a "memory" clobber does. > A clobber affects the output side only, but doesn't inherently provide > ordering on the input side. Apparently this is implicit in "asm > volatile", which is a very important property.
OK. It would be nice to get that confirmed.
J
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