Re: [PATCH] x86: Create clflush() inline, remove hardcoded wbinvd

[H. Peter Anvin]

Andi Kleen wrote:
>> The main reason is that everyone seems to invoke it either incorrectly
> Where is it incorrect? 

Using "r" or "m" (as opposed as "+m") gives gcc the wrong dependency
information, and it could, at least in theory, cause memory references
to be moved around it -- especially when using "r".

	-hpa
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/