Re: [PATCH] x86: Align jump targets to 1 byte boundaries

[H. Peter Anvin]

On 04/10/2015 10:54 AM, Ingo Molnar wrote:
> 
> Yeah, but the decoder stops if the prefetch crosses a cache line? So 
> it appears to be an interaction of the 16 byte prefetch window and 
> cache line boundaries?
> 

I don't think it has anything to do with cache lines.  Rather, you may
lose a cycle if the first instruction bundle crosses into a new 16-byte
chunk.

	-hpa

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