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Re: [Xen-devel] [PATCH] "lock cmpxch8b" and split locks

On 5 Oct 2005, at 19:27, Puthiyaparambil, Aravindh wrote:

Does anyone know if there are other places where the "lock" prefix is
used with a cache misaligned address?

x86 systems are supposed to guarantee that LOCKed instructions access their memory operand atomically, regardless of alignment (Vol 3 of the Intel reference manual). Your systems break this application-visible guarantee?

 -- Keir

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