[PATCH] KVM: PPC: elide struct thread_struct instances from stack
Andreas Schwab
schwab at linux-m68k.org
Tue Jun 1 18:36:21 EST 2010
Paul Mackerras <paulus at samba.org> writes:
> I re-read the relevant part of the PowerPC architecture spec
> yesterday, and it seems pretty clear that the FPSCR doesn't affect the
> behaviour of lfs and stfs, and is not affected by them. So in fact 4
> out of the 7 instructions in each of those procedures are unnecessary
> (and similarly for the cvt_fd/df used in the alignment fixup code).
I'd prefer to have this deferred to a separate patch.
Andreas.
--
Andreas Schwab, schwab at linux-m68k.org
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