[RFC PATCH 2/2] ARM: VFP: preserve the HW context when calling signal handlers

[imre.deak@nokia.com (Imre Deak)]

On Mon, Jan 04, 2010 at 04:18:54PM +0100, Siamashka Siarhei (Nokia-D/Helsinki) wrote:
> On Monday 04 January 2010 16:25:49 ext Russell King - ARM Linux wrote:
> > On Mon, Jan 04, 2010 at 04:15:26PM +0200, Siarhei Siamashka wrote:
> > > On Saturday 13 June 2009 20:04:06 ext Russell King - ARM Linux wrote:
> > > > - wait for a new patch which includes these other registers and not
> > > > have any ABI visible changes to contend with
> > >
> > > Sorry for bumping this old thread, but what is the current status of
> > > these patches?
> >
> > What happened was that the 2nd option was decided upon, and then the
> > thread died, and probably everyone forgot about it.
> >
> > So, I'm doing exactly what I said I'd do in the second option.  I'm just
> > still waiting some six months on...
> 
> OK, it's understandable. The issue just got a bit more popular now than it
> used to be six months ago.
> 
> > If someone comes up with a tested patch, then its something we should
> > sort out.
> 
> Thanks for clarifying the situation.

Jamie, you raised the question of FP emulation in user space; could you
provide the VFP registers needed for that in addition to the already saved
ones? With that info I could update the patch so it's acceptable for everyone.

Thanks,
Imre