Re: [PATCH v9 09/12] iommu/arm-smmu-v3-kdump: Implement is_attach_deferred()

[Nicolin Chen]

On Sat, Aug 22, 2026 at 05:02:26PM -0300, Jason Gunthorpe wrote:
> On Sat, Aug 22, 2026 at 11:16:35AM -0700, Nicolin Chen wrote:
> > On Fri, Aug 21, 2026 at 08:15:26PM -0300, Jason Gunthorpe wrote:
> > > > @@ -1276,6 +1292,12 @@ arm_smmu_kdump_adopt_deferred_l2_strtab(struct arm_smmu_device *smmu, u32 sid,
> > > >  {
> > > >  	return -EOPNOTSUPP;
> > > >  }
> > > > +
> > > > +static inline bool
> > > > +arm_smmu_kdump_is_attach_deferred(struct arm_smmu_master *master)
> > > > +{
> > > > +	return false;
> > > > +}
> > > 
> > > 
> > > ?
> > 
> > This is for !CONFIG_CRASH_DUMP case. I think we need it.
> 
> Hmm, I am testing b4 review.. I had written
> 
> #define arm_smmu_kdump_is_attach_deferred NULL

Hmm, I'm adding two-level is_attach_deferred functions:

arm_smmu_is_attached_deferred()
{
	if (OPT_KDUMP_ADOPT)
		arm_smmu_kdump_is_attach_deferred();
		// internally doesn't check OPT_KDUMP_ADOPT  	
}
[...]
	.is_attach_deferred = arm_smmu_is_attached_deferred,

So, arm_smmu_kdump_is_attach_deferred cannot be NULL.

Nicolin