Re: [PATCH] x86: Make variable_test_bit reference all of *addr

[Andi Kleen]

"hpanvin@xxxxxxxxx" <hpa@xxxxxxxxx> writes:


> This is concerning... the kernel relies heavily on asm volatile being a universal memory consumer.  If that is suddenly broken, we are f*** in many, many, MANY places in the kernel all of a sudden!

I don't think that's true. We generally add "memory" clobbers for this
purpose. asm volatile just means "don't move" 

Just this one doesn't have it for unknown reasons (someone overoptimizing?)

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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