[PATCH v4 2/2] ARM: vfp: clear fpscr length and stride bits on entry to sig handler

[Will Deacon]

On Mon, May 14, 2012 at 06:50:44PM +0100, Jon Medhurst (Tixy) wrote:
> On Mon, 2012-05-14 at 18:37 +0100, Will Deacon wrote:
> > You're right, in the lazy case (i.e. SMP) we update the hwstate on
> > context-switch rather than on the fault. Your quick fix looks good to me
> > (that is, unconditionally flushing the state after handling a signal). I was
> > initially worried that the added flushing would cause a performance hit on
> > the usual path, where VFP is not used in the handler, however since we flush
> > before the signal handler, it really won't make a lot of difference.
> > 
> > I took the liberty of writing a commit message, so can I add your S-o-B to
> > this please (I wasn't sure which email address to use)?
> 
> Thanks, it's the day job, so...
> 
> Signed-off-by: Jon Medhurst <tixy at linaro.org>

Cheers Jon, I'll stick this in the patch system tomorrow. If it doesn't make
the final cut, I'll retrospectively send it to stable when they move to
3.4.

Will