linux-kernel - Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable

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Message-ID: <20070318120814.GA45869@muc.de>
Date:	Sun, 18 Mar 2007 13:08:14 +0100
From:	Andi Kleen <ak@....de>
To:	David Miller <davem@...emloft.net>
Cc:	rusty@...tcorp.com.au, jeremy@...p.org, mingo@...e.hu,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	virtualization@...ts.osdl.org, xen-devel@...ts.xensource.com,
	chrisw@...s-sol.org, zach@...are.com, anthony@...emonkey.ws,
	torvalds@...ux-foundation.org, netdev@...r.kernel.org
Subject: Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable

> The idea is _NOT_ that you go look for references to the paravirt_ops
> members structure, that would be stupid and you wouldn't be able to
> use the most efficient addressing mode on a given cpu, you'd be
> patching up indirect calls and crap like that.  Just say no...

That wouldn't handle inlines though. At least some of the current
paravirtops like cli/sti are critical enough to require inlining.

-Andi
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