Re: Hijacking CPU_FTR_VSX for BGQ QPX

2012-12-05 Thread Michael Neuling
Jimi Xenidis wrote: > Sorry for the pause, lots of other things getting done... questions below. > > On Nov 9, 2012, at 10:33 PM, Michael Neuling wrote: > > > Benjamin Herrenschmidt wrote: > > > >> On Fri, 2012-11-09 at 11:43 -0600, Jimi Xenidis wrote: > >>> The CPU_FTR_* values are pretty t

Re: Hijacking CPU_FTR_VSX for BGQ QPX

2012-12-05 Thread Jimi Xenidis
Sorry for the pause, lots of other things getting done... questions below. On Nov 9, 2012, at 10:33 PM, Michael Neuling wrote: > Benjamin Herrenschmidt wrote: > >> On Fri, 2012-11-09 at 11:43 -0600, Jimi Xenidis wrote: >>> The CPU_FTR_* values are pretty tight (a few bits left) yes I need to s

Re: Hijacking CPU_FTR_VSX for BGQ QPX

2012-11-09 Thread Michael Neuling
Benjamin Herrenschmidt wrote: > On Fri, 2012-11-09 at 11:43 -0600, Jimi Xenidis wrote: > > The CPU_FTR_* values are pretty tight (a few bits left) yes I need to save > > and restore the QPX registers. > > There are 32 QPX registers, each 32 bytes in size, it is otherwise managed > > by the FPSC

Re: Hijacking CPU_FTR_VSX for BGQ QPX

2012-11-09 Thread Benjamin Herrenschmidt
On Fri, 2012-11-09 at 11:43 -0600, Jimi Xenidis wrote: > The CPU_FTR_* values are pretty tight (a few bits left) yes I need to save > and restore the QPX registers. > There are 32 QPX registers, each 32 bytes in size, it is otherwise managed by > the FPSCR and MSR[FP] > > I was thinking that I c