Re: [PATCH v10 04/13] iommu/arm-smmu-v3: Disable the EVTQ and the PRIQ in a kdump kernel

[Jason Gunthorpe]

On Sun, 30 Aug 2026 16:18:05 -0700, Nicolin Chen <nicolinc@xxxxxxxxxx> wrote:
> A kdump kernel cannot use either queue. The crashed kernel's CDs and page
> tables might be corrupted, so events would spam the EVTQ, and there is no
> way to serve the page requests that would arrive at the PRIQ.
> 
> The reset routine still enables both of the queues and then masks the two
> enable bits back out, having already programmed the queue bases and taken
> the interrupts of both.
> 
> [...]

Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>

-- 
Jason