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Re: [PATCH for-4.20? 1/3] AMD/IOMMU: drop stray MSI enabling
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jason Andryuk <jason.andryuk@xxxxxxx>
- Date: Fri, 31 Jan 2025 13:46:25 -0500
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
- Delivery-date: Fri, 31 Jan 2025 18:46:52 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 2025-01-30 06:11, Jan Beulich wrote:
While the 2nd of the commits referenced below should have moved the call
to amd_iommu_msi_enable() instead of adding another one, the situation
wasn't quite right even before: It can't have done any good to enable
MSI when no IRQ was allocated for it, yet.
Fixes: 5f569f1ac50e ("AMD/IOMMU: allow enabling with IRQ not yet set up")
Fixes: d9e49d1afe2e ("AMD/IOMMU: adjust setup of internal interrupt for x2APIC
mode")
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
Tested-by: Jason Andryuk <jason.andryuk@xxxxxxx>
dom0=pvh on CPU *without* x2apic support.
Thanks,
Jason
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