From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas Schwab <schwab@linux-m68k.org>
Date: Tue, 01 Jun 2010 08:36:21 +0000
Subject: Re: [PATCH] KVM: PPC: elide struct thread_struct instances from stack
Message-Id: <m3r5krrvy2.fsf@hase.home>
List-Id: <kvm-ppc.vger.kernel.org>
References: <m26323onam.fsf@igel.home>
	<20100531224040.GA22927@brick.ozlabs.ibm.com>
In-Reply-To: <20100531224040.GA22927-oklZEfemRj05kJ7NmlRacFaTQe2KTcn/@public.gmane.org> (Paul Mackerras's
	message of "Tue, 1 Jun 2010 08:40:40 +1000")
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To: Paul Mackerras <paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>
Cc: kvm-ppc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linuxppc-dev-mnsaURCQ41sdnm+yROfE0A@public.gmane.org, Alexander Graf <agraf-l3A5Bk7waGM@public.gmane.org>, kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org

Paul Mackerras <paulus@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@linux-m68k.org
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