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Re: [PATCH v4 2/7] xen/arm: Move is_protected flag to struct device
- To: Julien Grall <julien@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- Date: Fri, 29 Sep 2023 10:45:46 -0400
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- Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Rahul Singh <rahul.singh@xxxxxxx>
- Delivery-date: Fri, 29 Sep 2023 14:46:15 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 6/29/23 18:22, Julien Grall wrote:
> Hi Stewart,
>
> On 07/06/2023 04:02, Stewart Hildebrand wrote:
>> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
>>
>> This flag will be re-used for PCI devices by the subsequent
>> patches.
>
> I was expecting that we would only do PCI passthrough on boards where
> all the PCI devices are behind an IOMMU. So it would be a all or nothing
> and therefore is_protected would not be used.
That makes sense.
> Do you have an example where this wouldn't be the case?
No. I'll drop this patch for v5 of the series.
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