Hi Jean, On 12/9/19 7:05 PM, Jean-Philippe Brucker wrote: > Second-level context descriptor tables will be allocated lazily in > arm_smmu_write_ctx_desc(). Help with handling allocation failure by > moving the CD write into arm_smmu_domain_finalise_s1(). nit: would rather change the title to something like "Prepare for arm_smmu_write_ctx_desc() failure" > > Signed-off-by: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx> Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx> Thanks Eric > --- > drivers/iommu/arm-smmu-v3.c | 11 +++++++---- > 1 file changed, 7 insertions(+), 4 deletions(-) > > diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c > index f260abadde6d..fc5119f34187 100644 > --- a/drivers/iommu/arm-smmu-v3.c > +++ b/drivers/iommu/arm-smmu-v3.c > @@ -2301,8 +2301,15 @@ static int arm_smmu_domain_finalise_s1(struct arm_smmu_domain *smmu_domain, > cfg->cd.ttbr = pgtbl_cfg->arm_lpae_s1_cfg.ttbr[0]; > cfg->cd.tcr = pgtbl_cfg->arm_lpae_s1_cfg.tcr; > cfg->cd.mair = pgtbl_cfg->arm_lpae_s1_cfg.mair; > + > + ret = arm_smmu_write_ctx_desc(smmu_domain, 0, &cfg->cd); > + if (ret) > + goto out_free_tables; > + > return 0; > > +out_free_tables: > + arm_smmu_free_cd_tables(smmu_domain); > out_free_asid: > arm_smmu_bitmap_free(smmu->asid_map, asid); > return ret; > @@ -2569,10 +2576,6 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev) > if (smmu_domain->stage != ARM_SMMU_DOMAIN_BYPASS) > master->ats_enabled = arm_smmu_ats_supported(master); > > - if (smmu_domain->stage == ARM_SMMU_DOMAIN_S1) > - arm_smmu_write_ctx_desc(smmu_domain, 0, > - &smmu_domain->s1_cfg.cd); > - > arm_smmu_install_ste_for_dev(master); > > spin_lock_irqsave(&smmu_domain->devices_lock, flags); >
