linux-kernel - Re: [Xen-devel] [PATCH v3] p2m: use GNTTABOP_unmap_and

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Message-ID: <5277C6B3.1000500@citrix.com>
Date:	Mon, 4 Nov 2013 17:09:23 +0100
From:	Roger Pau Monné <roger.pau@...rix.com>
To:	Ian Campbell <Ian.Campbell@...rix.com>
CC:	<xen-devel@...ts.xen.org>, <linux-kernel@...r.kernel.org>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	David Vrabel <david.vrabel@...rix.com>
Subject: Re: [Xen-devel] [PATCH v3] p2m: use GNTTABOP_unmap_and_duplicate
 if available

On 04/11/13 16:49, Ian Campbell wrote:
> On Mon, 2013-11-04 at 16:38 +0100, Roger Pau Monne wrote:
>> The new GNTTABOP_unmap_and_duplicate operation 
> 
> I don't see this op in mainline Xen anywhere...
> 
> Was it part of Stefano's original swiotlb for ARM stuff? If so we've
> dropped that approach for ARM and the new solution doesn't require
> hypervisor changes so the upstreaming of this hypercall ended, so you'd
> have to pick it up and complete that work if you want to use it.

It's not part of the ARM stuff, the patch to add that OP is here:

http://lists.xen.org/archives/html/xen-devel/2013-07/msg02825.html

I guess I will need to resend that also.

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