Re: [PATCH] xen/arm: smmuv1: remove iommu group when deassign a device

[Julien Grall <julien@xxxxxxx>]

Hi,

On 21/07/2022 16:53, Rahul Singh wrote:
> > On 28 Jun 2022, at 6:23 pm, Mykyta Poturai <mykyta.poturai@xxxxxxxxx> wrote:
> > With this patch I get the same results, here is the error message:
> >
> > (XEN) smmu: /iommu@51400000: Unexpected global fault, this could be serious
> > (XEN) smmu: /iommu@51400000:    GFSR 0x00000001, GFSYNR0 0x00000004, GFSYNR1 
> > 0x00001055, GFSYNR2 0x00000000
> As you mentioned earlier, this fault is observed because GPU continues to 
> access memory when the context is
> already invalidated, and therefore triggers the "Invalid context fault".  This 
> is a different issue and is not related to this patch.
>
> @Julien are you okay if I will send the below patch for official review as this 
> issue pending for a long time?
I am OK in principle. I will do a proper review on you send a formal patch.

Cheers,

--
Julien Grall