[Xen-ia64-devel] Re: PATCH: vpsr handling cleanup

On Mon, 2007-05-07 at 06:32 +0200, Tristan Gingold wrote:
> Hi,
> 
> this is a noop patch: just create a function which really returns the virtual
> psr and create a new function to set psr for delivering an interrupt.

Hi Tristan,

   It doesn't seem like quite a noop.  I'm seeing a pretty significant
performance hit as seen by a parallel kernel build in an SMP PV domain
(on the order of 20%).  I can provide more details if you're unable to
reproduce.  Thanks,

        Alex

-- 
Alex Williamson                             HP Open Source & Linux Org.

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