[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
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."


More information about the Linuxppc-dev mailing list