diff options
Diffstat (limited to 'drivers/iommu/arm-smmu-v3.c')
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 47f52b1ab838..80532d9ecaaf 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1085,7 +1085,11 @@ static void arm_smmu_write_strtab_ent(struct arm_smmu_device *smmu, u32 sid, dst[1] = cpu_to_le64(STRTAB_STE_1_SHCFG_INCOMING << STRTAB_STE_1_SHCFG_SHIFT); dst[2] = 0; /* Nuke the VMID */ - if (ste_live) + /* + * The SMMU can perform negative caching, so we must sync + * the STE regardless of whether the old value was live. + */ + if (smmu) arm_smmu_sync_ste_for_sid(smmu, sid); return; } |