diff options
Diffstat (limited to 'drivers/iommu/intel-pasid.c')
| -rw-r--r-- | drivers/iommu/intel-pasid.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iommu/intel-pasid.c b/drivers/iommu/intel-pasid.c index e7cb0b8a7332..9641eaa19e08 100644 --- a/drivers/iommu/intel-pasid.c +++ b/drivers/iommu/intel-pasid.c @@ -166,6 +166,9 @@ int intel_pasid_alloc_table(struct device *dev) attach_out: device_attach_pasid_table(info, pasid_table); + if (!ecap_coherent(info->iommu->ecap)) + clflush_cache_range(pasid_table->table, (1 << order) * PAGE_SIZE); + return 0; } @@ -250,6 +253,10 @@ struct pasid_entry *intel_pasid_get_entry(struct device *dev, int pasid) WRITE_ONCE(dir[dir_index].val, (u64)virt_to_phys(entries) | PASID_PTE_PRESENT); + if (!ecap_coherent(info->iommu->ecap)) { + clflush_cache_range(entries, VTD_PAGE_SIZE); + clflush_cache_range(&dir[dir_index].val, sizeof(*dir)); + } } spin_unlock(&pasid_lock); |