diff options
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 8651f6d4dfa0..a49afa11673c 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -179,7 +179,7 @@ static int rwbf_quirk; * (used when kernel is launched w/ TXT) */ static int force_on = 0; -int intel_iommu_tboot_noforce; +static int intel_iommu_tboot_noforce; static int no_platform_optin; #define ROOT_ENTRY_NR (VTD_PAGE_SIZE/sizeof(struct root_entry)) @@ -1833,7 +1833,7 @@ static void free_dmar_iommu(struct intel_iommu *iommu) if (ecap_prs(iommu->ecap)) intel_svm_finish_prq(iommu); } - if (ecap_vcs(iommu->ecap) && vccap_pasid(iommu->vccap)) + if (vccap_pasid(iommu->vccap)) ioasid_unregister_allocator(&iommu->pasid_allocator); #endif @@ -2525,6 +2525,9 @@ struct dmar_domain *find_domain(struct device *dev) { struct device_domain_info *info; + if (unlikely(!dev || !dev->iommu)) + return NULL; + if (unlikely(attach_deferred(dev))) return NULL; @@ -3209,7 +3212,7 @@ static void register_pasid_allocator(struct intel_iommu *iommu) * is active. All vIOMMU allocators will eventually be calling the same * host allocator. */ - if (!ecap_vcs(iommu->ecap) || !vccap_pasid(iommu->vccap)) + if (!vccap_pasid(iommu->vccap)) return; pr_info("Register custom PASID allocator\n"); @@ -3815,9 +3818,8 @@ bounce_map_single(struct device *dev, phys_addr_t paddr, size_t size, * page aligned, we don't need to use a bounce page. */ if (!IS_ALIGNED(paddr | size, VTD_PAGE_SIZE)) { - tlb_addr = swiotlb_tbl_map_single(dev, - phys_to_dma_unencrypted(dev, io_tlb_start), - paddr, size, aligned_size, dir, attrs); + tlb_addr = swiotlb_tbl_map_single(dev, paddr, size, + aligned_size, dir, attrs); if (tlb_addr == DMA_MAPPING_ERROR) { goto swiotlb_error; } else { @@ -4882,7 +4884,8 @@ int __init intel_iommu_init(void) * Intel IOMMU is required for a TXT/tboot launch or platform * opt in, so enforce that. */ - force_on = tboot_force_iommu() || platform_optin_force_iommu(); + force_on = (!intel_iommu_tboot_noforce && tboot_force_iommu()) || + platform_optin_force_iommu(); if (iommu_init_mempool()) { if (force_on) |