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Re: [PATCH v2 14/18] IOMMU: fold flush-all hook into "flush one"
- To: Rahul Singh <Rahul.Singh@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 21 Dec 2021 09:04:58 +0100
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Paul Durrant <paul@xxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>, Bertrand Marquis <Bertrand.Marquis@xxxxxxx>
- Delivery-date: Tue, 21 Dec 2021 08:05:19 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 16.12.2021 12:30, Rahul Singh wrote:
>> On 24 Sep 2021, at 10:53 am, Jan Beulich <jbeulich@xxxxxxxx> wrote:
>>
>> Having a separate flush-all hook has always been puzzling me some. We
>> will want to be able to force a full flush via accumulated flush flags
>> from the map/unmap functions. Introduce a respective new flag and fold
>> all flush handling to use the single remaining hook.
>>
>> Note that because of the respective comments in SMMU and IPMMU-VMSA
>> code, I've folded the two prior hook functions into one. For SMMU-v3,
>> which lacks a comment towards incapable hardware, I've left both
>> functions in place on the assumption that selective and full flushes
>> will eventually want separating.
>
>
> For SMMUv3 related Changs:
> Reviewed-by: Rahul Singh <rahul.singh@xxxxxxx>
Thanks. Any chance of an ack / R-b also for patch 3?
Jan
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