linux-kernel - Re: [Xen-devel] [PATCH v2 04/20] xen/grant: Add helper gnttab_page_grant_foreign_access

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Message-ID: <55A7D803.4070308@citrix.com>
Date:	Thu, 16 Jul 2015 17:12:51 +0100
From:	Julien Grall <julien.grall@...rix.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
CC:	<ian.campbell@...rix.com>, Julien Grall <julien.grall@...aro.org>,
	<linux-kernel@...r.kernel.org>,
	David Vrabel <david.vrabel@...rix.com>,
	<xen-devel@...ts.xenproject.org>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [Xen-devel] [PATCH v2 04/20] xen/grant: Add helper gnttab_page_grant_foreign_access_ref

Hi Stefano,

On 16/07/2015 16:05, Stefano Stabellini wrote:
> I like this. I think it might make sense to call it
> gnttab_page_grant_foreign_access_ref_one to make clear that it is only
> granting the first 4K.

Will do.

> In the future we could introduce a new function, called
> gnttab_page_grant_foreign_access_ref, that grants all 4K in the page.

Unless having a different prototype it won't be possible to do it. This 
is because one ref = one grant. We would need a list of grant.

> In any case
>
> Reviewed-by: Stefano Stabellini <stefano.stabellini@...citrix.com>

Thank you,

-- 
Julien Grall
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