diff options
| author |   Lu Baolu <baolu.lu@linux.intel.com> | 2018-07-14 15:47:02 +0800 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2018-07-20 14:44:26 +0200 |
| commit | d9737953d85131436b09668b5e8d3389c37c1f28 (patch) | |
| tree | 0926ea59c5a9e2c873f03009f821a5a5342061de /drivers/iommu | |
| parent | iommu/vt-d: Apply per pci device pasid table in SVA (diff) | |
| download | linux-dev-d9737953d85131436b09668b5e8d3389c37c1f28.tar.xz linux-dev-d9737953d85131436b09668b5e8d3389c37c1f28.zip | |
iommu/vt-d: Remove the obsolete per iommu pasid tables
The obsolete per iommu pasid tables are no longer used. Hence,
clean up them.
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 6 | ||||
| -rw-r--r-- | drivers/iommu/intel-svm.c | 17 |
2 files changed, 5 insertions, 18 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index f1a3c5e5aff0..7ed0221dccf8 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1756,7 +1756,7 @@ static void free_dmar_iommu(struct intel_iommu *iommu) if (pasid_enabled(iommu)) { if (ecap_prs(iommu->ecap)) intel_svm_finish_prq(iommu); - intel_svm_free_pasid_tables(iommu); + intel_svm_exit(iommu); } #endif } @@ -3337,7 +3337,7 @@ static int __init init_dmars(void) hw_pass_through = 0; #ifdef CONFIG_INTEL_IOMMU_SVM if (pasid_enabled(iommu)) - intel_svm_alloc_pasid_tables(iommu); + intel_svm_init(iommu); #endif } @@ -4300,7 +4300,7 @@ static int intel_iommu_add(struct dmar_drhd_unit *dmaru) #ifdef CONFIG_INTEL_IOMMU_SVM if (pasid_enabled(iommu)) - intel_svm_alloc_pasid_tables(iommu); + intel_svm_init(iommu); #endif if (dmaru->ignored) { diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index a253cdeabd61..eb308363e541 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -38,7 +38,7 @@ struct pasid_state_entry { u64 val; }; -int intel_svm_alloc_pasid_tables(struct intel_iommu *iommu) +int intel_svm_init(struct intel_iommu *iommu) { struct page *pages; int order; @@ -63,15 +63,6 @@ int intel_svm_alloc_pasid_tables(struct intel_iommu *iommu) iommu->pasid_max = 0x20000; order = get_order(sizeof(struct pasid_entry) * iommu->pasid_max); - pages = alloc_pages(GFP_KERNEL | __GFP_ZERO, order); - if (!pages) { - pr_warn("IOMMU: %s: Failed to allocate PASID table\n", - iommu->name); - return -ENOMEM; - } - iommu->pasid_table = page_address(pages); - pr_info("%s: Allocated order %d PASID table.\n", iommu->name, order); - if (ecap_dis(iommu->ecap)) { /* Just making it explicit... */ BUILD_BUG_ON(sizeof(struct pasid_entry) != sizeof(struct pasid_state_entry)); @@ -86,14 +77,10 @@ int intel_svm_alloc_pasid_tables(struct intel_iommu *iommu) return 0; } -int intel_svm_free_pasid_tables(struct intel_iommu *iommu) +int intel_svm_exit(struct intel_iommu *iommu) { int order = get_order(sizeof(struct pasid_entry) * iommu->pasid_max); - if (iommu->pasid_table) { - free_pages((unsigned long)iommu->pasid_table, order); - iommu->pasid_table = NULL; - } if (iommu->pasid_state_table) { free_pages((unsigned long)iommu->pasid_state_table, order); iommu->pasid_state_table = NULL; |