Re: [PATCH v5 2/9] iommu/arm-smmu-v3: Replace s1_cfg with cdtab_cfg

From: Will Deacon
Date: Thu Aug 10 2023 - 05:43:46 EST


On Thu, Aug 10, 2023 at 05:33:53PM +0800, Michael Shavit wrote:
> > > > Sounds a lot like the existing s1fmt field. Can we keep it?
> > >
> > > If you are OK with the dead code, I don't object. But let's put it in
> > > the struct arm_smmu_ctx_desc_cfg.
> >
> > Ok, we have a deal!
>
> What dead code? Is the deal here that we keep the field, but still
> infer the value to write from (cd_table->l1_desc == null) in
> arm_smmu_write_strtab_ent??

Keep the field and write it directly when populating the ste (i.e. don't
infer anything), but the field moves into 'struct arm_smmu_ctx_desc_cfg'.

Will