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[Xen-devel] Re: [patch 03/26] Xen-paravirt_ops: use paravirt_nop to cons

To: Ingo Molnar <mingo@xxxxxxx>
Subject: [Xen-devel] Re: [patch 03/26] Xen-paravirt_ops: use paravirt_nop to consistently mark no-op operations
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Fri, 16 Mar 2007 11:43:44 -0700
Cc: Zachary Amsden <zach@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxx, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Chris Wright <chrisw@xxxxxxxxxxxx>, Andi Kleen <ak@xxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
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Ingo Molnar wrote:
> but only as a cleanup of the current open-coded (void *) casts. My 
> problem with this is that it loses the types. Not that there is much to 
> check for, but still, this adds some assumptions about how function 
> calls look like.

I agree.  I don't generally like this kind of hack, but having a single
test for "func == paravirt_nop" to look for nop pv_ops in the patcher is
what tipped the balance.

    J

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