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Re: [XEN PATCH v5 3/3] x86/iommu: Disable intrerrupt remapping if cx16 is not supported
- To: Teddy Astie <teddy.astie@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 24 Apr 2024 16:31:57 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 24 Apr 2024 14:32:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 18.04.2024 13:57, Teddy Astie wrote:
> All hardware with VT-d/AMD-Vi has CMPXCHG16B support. Check this at
> initialisation time, and remove the effectively-dead logic for the non-cx16
> case.
>
> Suggested-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Signed-off-by: Teddy Astie <teddy.astie@xxxxxxxxxx>
Hmm, so this looks to be the code that I commented on as missing in patch 1.
I don't think this can be two separate patches. If you want to keep things
in small chunks, move the removal of "the effectively-dead logic" to a
separate, follow-on patch.
Jan
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