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Re: [Xen-devel] incompatible prototypes

from [Jeremy Fitzhardinge] [Permanent Link][Original]
To: Keir Fraser <keir@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] incompatible prototypes
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Fri, 27 Apr 2007 09:40:50 -0700
Cc: PUCCETTI Armand <armand.puccetti@xxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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Keir Fraser wrote:
>> We don't use regparm(3) inside Xen?  Works nicely for the kernel.
>>     
>
> What's the speedup?
>   

Mumble mumble.  Don't know.  It's been that way for quite a long time now.

But it makes the generated code moderately smaller.  -freg-struct-return
helps too (about 2k of text saved on the kernel, which is fairly piddling).

    J

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