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path: root/drivers/iommu/intel-iommu.c
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Diffstat (limited to 'drivers/iommu/intel-iommu.c')
-rw-r--r--drivers/iommu/intel-iommu.c28
1 files changed, 17 insertions, 11 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 6784a05dd6b2..a0babdbf7146 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -82,8 +82,6 @@
#define IOVA_START_PFN (1)
#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT)
-#define DMA_32BIT_PFN IOVA_PFN(DMA_BIT_MASK(32))
-#define DMA_64BIT_PFN IOVA_PFN(DMA_BIT_MASK(64))
/* page table handling */
#define LEVEL_STRIDE (9)
@@ -1878,8 +1876,7 @@ static int dmar_init_reserved_ranges(void)
struct iova *iova;
int i;
- init_iova_domain(&reserved_iova_list, VTD_PAGE_SIZE, IOVA_START_PFN,
- DMA_32BIT_PFN);
+ init_iova_domain(&reserved_iova_list, VTD_PAGE_SIZE, IOVA_START_PFN);
lockdep_set_class(&reserved_iova_list.iova_rbtree_lock,
&reserved_rbtree_key);
@@ -1938,8 +1935,7 @@ static int domain_init(struct dmar_domain *domain, struct intel_iommu *iommu,
unsigned long sagaw;
int err;
- init_iova_domain(&domain->iovad, VTD_PAGE_SIZE, IOVA_START_PFN,
- DMA_32BIT_PFN);
+ init_iova_domain(&domain->iovad, VTD_PAGE_SIZE, IOVA_START_PFN);
err = init_iova_flush_queue(&domain->iovad,
iommu_flush_iova, iova_entry_free);
@@ -2058,7 +2054,7 @@ static int domain_context_mapping_one(struct dmar_domain *domain,
if (context_copied(context)) {
u16 did_old = context_domain_id(context);
- if (did_old >= 0 && did_old < cap_ndoms(iommu->cap)) {
+ if (did_old < cap_ndoms(iommu->cap)) {
iommu->flush.flush_context(iommu, did_old,
(((u16)bus) << 8) | devfn,
DMA_CCMD_MASK_NOBIT,
@@ -3473,11 +3469,12 @@ static unsigned long intel_alloc_iova(struct device *dev,
* from higher range
*/
iova_pfn = alloc_iova_fast(&domain->iovad, nrpages,
- IOVA_PFN(DMA_BIT_MASK(32)));
+ IOVA_PFN(DMA_BIT_MASK(32)), false);
if (iova_pfn)
return iova_pfn;
}
- iova_pfn = alloc_iova_fast(&domain->iovad, nrpages, IOVA_PFN(dma_mask));
+ iova_pfn = alloc_iova_fast(&domain->iovad, nrpages,
+ IOVA_PFN(dma_mask), true);
if (unlikely(!iova_pfn)) {
pr_err("Allocating %ld-page iova for %s failed",
nrpages, dev_name(dev));
@@ -4752,6 +4749,16 @@ int __init intel_iommu_init(void)
goto out_free_dmar;
}
+ up_write(&dmar_global_lock);
+
+ /*
+ * The bus notifier takes the dmar_global_lock, so lockdep will
+ * complain later when we register it under the lock.
+ */
+ dmar_register_bus_notifier();
+
+ down_write(&dmar_global_lock);
+
if (no_iommu || dmar_disabled) {
/*
* We exit the function here to ensure IOMMU's remapping and
@@ -4897,8 +4904,7 @@ static int md_domain_init(struct dmar_domain *domain, int guest_width)
{
int adjust_width;
- init_iova_domain(&domain->iovad, VTD_PAGE_SIZE, IOVA_START_PFN,
- DMA_32BIT_PFN);
+ init_iova_domain(&domain->iovad, VTD_PAGE_SIZE, IOVA_START_PFN);
domain_reserve_special_ranges(domain);
/* calculate AGAW */