Re: disabling group leader perf_event

[Avi Kivity]

 On 09/08/2010 04:44 AM, Paul Mackerras wrote:
> So... I would be interested to see you add the case for the MOV
> instruction. :)

x86 32-bit segmentation.

Unfortunately those are limited to i386.  With some care we could use 
them on x86_64 (temporarily switch the address space to include the 
"bytecode" and its data at the lower 4G, execute a far call to the 
bytecode, etc.

It's cumbersome though, and will make context switches to the bytecode 
quite slow.

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

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