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From: Rusty Russell <rusty@rustcorp.com.au>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: [PATCH 4 of 7] x86/paravirt: selectively save/restore regs around pvops calls
Date: Fri, 30 Jan 2009 10:57:27 +1030
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Cc: Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org,
       "Xen-devel" <xen-devel@lists.xensource.com>,
       "the arch/x86 maintainers" <x86@kernel.org>,
       Ian Campbell <ian.campbell@citrix.com>,
       Zachary Amsden <zach@vmware.com>,
       Ravikiran Thirumalai <kiran@scalemp.com>
References: <patchbomb.1233182100@abulafia.goop.org> <200901291917.26601.rusty@rustcorp.com.au> <4981773A.1050403@goop.org>
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On Thursday 29 January 2009 20:00:34 Jeremy Fitzhardinge wrote:
> Rusty Russell wrote:
> > It's kind of messy.  Can we do something clever here with token pasting?
> 
> I tried a few things, but no.  Passing in just RAX, and then pasting 
> CLBR_##reg works, and the assembler accepts %RAX - but - the asm code 
> also #defines RAX <some stack offset>, so the assembler ends up seeing 
> %48.  I considered renaming all the CLBR_ defines to CLBR_rax, but that 
> looks unhappy too.  So I stayed with this.

OK, then Acked-by: Rusty Russell <rusty@rustcorp.com.au> on this one too.

Thanks,
Rusty.
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