Messages in this thread | | | Subject | Re: [PATCH] [RFC] [2.5 i386] GCC 3.1 -march support, PPRO_FENCE reduction, prefetch fixes and other CPU-related changes | From | Alan Cox <> | Date | 04 Aug 2002 22:54:35 +0100 |
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On Sun, 2002-08-04 at 21:23, Luca Barbieri wrote: > Added, with the exception that sfence is only used if CONFIG_X86_OOSTORE > is not defined (currently never).
Ok sorry I follow what you are doing. What I don't understand is why you are generating unneeded sfence/mfence instructions in the other cases ?
When we use MMX/SSE we need the view to be consistent anyway so the various copying routines already handle this internally.
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