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Re: [PATCH v2 5/8] xen/arm: Remove support for PCI ATS on SMMUv3

To: Rahul Singh <rahul.singh@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
From: Julien Grall <julien@xxxxxxx>
Date: Wed, 2 Dec 2020 13:57:51 +0000
Cc: bertrand.marquis@xxxxxxx, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
Delivery-date: Wed, 02 Dec 2020 13:58:01 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Hi Rahul,

On 26/11/2020 17:02, Rahul Singh wrote:

PCI ATS functionality is not implemented and tested on ARM.

I agree that short term, this is not going to be implemented. However, Ido expect this feature to be used medium term (mostly likely before thedriver is out of tech preview).


So I think it would be best to keep the code around.

Cheers,

--
Julien Grall

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