linux-kernel - Re: [PATCH 1/2] xen/granttable: Support sub-page grants

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Date:	Wed, 07 Dec 2011 18:27:39 +0800
From:	ANNIE LI <annie.li@...cle.com>
To:	Ian Campbell <Ian.Campbell@...rix.com>
CC:	Paul Durrant <Paul.Durrant@...rix.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"konrad.wilk@...cle.com" <konrad.wilk@...cle.com>,
	"jeremy@...p.org" <jeremy@...p.org>,
	"kurt.hackel@...cle.com" <kurt.hackel@...cle.com>
Subject: Re: [PATCH 1/2] xen/granttable: Support sub-page grants



On 2011-12-7 17:57, Ian Campbell wrote:
> On Wed, 2011-12-07 at 08:59 +0000, Paul Durrant wrote:
>>> gnttab_v2_ops = {
>>>    ...
>>> .access_subpage = access_subpage_v2;
>>> .access_ref_subpage = access_ref_subpage_v2; .access_trans =
>>> access_trans_v2; .access_ref_trans = access_ref_trans_v2; }
>>>
>>
>> Do you need ops for the ref and non-ref functions? I would have
>> thought you could just have the ref ones since the all the non-ref
>> variants do is allocate and then call the ref variant.
> Good point. It appears that all the existing ops are only present in the
> ref form.
So I will add two elements: access_ref_subpage and access_ref_trans into 
gnttab_v2_ops.

Thanks
Annie
> Ian.
>
>
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