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[Xen-devel] Re: [patch 04/26] Xen-paravirt_ops: Add pagetable accessors

To: Ingo Molnar <mingo@xxxxxxx>
Subject: [Xen-devel] Re: [patch 04/26] Xen-paravirt_ops: Add pagetable accessors to pack and unpack pagetable entries
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Wed, 28 Feb 2007 12:12:37 -0800
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:
>> Yes, but it happens after asm/paravirt.h has already included some 
>> things, and it ends up causing problems.  paravirt.h still defines 
>> various stub functions in the !CONFIG_PARAVIRT case, so it needs to do 
>> the includes either way.
>>     
>
> hm, it then needs to be fixed first, instead of adding to the mess.
>   

OK, I've fixed this by hoisting all the native_* implementations into
pgtable.h.  In the !PARAVIRT case the normal macros directly use the
native_* functions, and in the PARAVIRT case they're used by the native
paravirt_ops.  This has the nice property of avoiding this specific
problem, and also generally removes code duplication.

    J

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