Re: [PATCH RFTv1 1/3] iommu/arm-smmu-v3: Drain in-flight fault handlers

[Jason Gunthorpe]

On Tue, Mar 03, 2026 at 12:13:05PM -0800, Nicolin Chen wrote:
> From: Malak Marrid <mmarrid@xxxxxxxxxx>
> 
> When a device is switching away from a domain, either through a detach or a
> replace operation, it must drain its IOPF queue that only contains the page
> requests for the old domain.
> 
> Co-developed-by: Barak Biber <bbiber@xxxxxxxxxx>
> Signed-off-by: Barak Biber <bbiber@xxxxxxxxxx>
> Co-developed-by: Stefan Kaestle <skaestle@xxxxxxxxxx>
> Signed-off-by: Stefan Kaestle <skaestle@xxxxxxxxxx>
> Signed-off-by: Malak Marrid <mmarrid@xxxxxxxxxx>
> Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
> ---
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)

Isn't this an existing bug in the stall handling?

Jason