linux-kernel - Re: [patch 10/21] Xen-paravirt: add hooks to intercept mm creation and destruction

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Message-ID: <20070222201644.GA4938@ucw.cz>
Date:	Thu, 22 Feb 2007 20:16:44 +0000
From:	Pavel Machek <pavel@....cz>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Andi Kleen <ak@....de>, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, virtualization@...ts.osdl.org,
	xen-devel@...ts.xensource.com, Chris Wright <chrisw@...s-sol.org>,
	Zachary Amsden <zach@...are.com>
Subject: Re: [patch 10/21] Xen-paravirt: add hooks to intercept mm creation and destruction

Hi!

> @@ -126,6 +126,12 @@ struct paravirt_ops
>  	void (*io_delay)(void);
>  	void (*const_udelay)(unsigned long loops);
>  
> +	void (fastcall *activate_mm)(struct mm_struct *prev,
> +				     struct mm_struct *next);
> +	void (fastcall *dup_mmap)(struct mm_struct *oldmm, 
> +				  struct mm_struct *mm);
> +	void (fastcall *exit_mmap)(struct mm_struct *mm);
> +

Why the fastcall stuff?  Why is io_delay different from activate_mm in
this regard?
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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