Thread (7 messages) 7 messages, 4 authors, 2010-06-02

Re: [PATCH] KVM: PPC: elide struct thread_struct instances from stack

From: Andreas Schwab <hidden>
Date: 2010-06-01 08:36:25
Also in: kvm

Paul Mackerras [off-list ref] 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@linux-m68k.org
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