diff options
Diffstat (limited to 'drivers/iommu/amd/iommu.c')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 5ce8e6504ba7..16f40b8000d7 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -1415,6 +1415,7 @@ static int domain_flush_pages_v2(struct protection_domain *pdom, struct iommu_cmd cmd; int ret = 0; + lockdep_assert_held(&pdom->lock); list_for_each_entry(dev_data, &pdom->dev_list, list) { struct amd_iommu *iommu = get_amd_iommu_from_dev(dev_data->dev); u16 domid = dev_data->gcr3_info.domid; @@ -1464,6 +1465,8 @@ static void __domain_flush_pages(struct protection_domain *domain, ioasid_t pasid = IOMMU_NO_PASID; bool gn = false; + lockdep_assert_held(&domain->lock); + if (pdom_is_v2_pgtbl_mode(domain)) { gn = true; ret = domain_flush_pages_v2(domain, address, size); @@ -1585,6 +1588,8 @@ void amd_iommu_update_and_flush_device_table(struct protection_domain *domain) { struct iommu_dev_data *dev_data; + lockdep_assert_held(&domain->lock); + list_for_each_entry(dev_data, &domain->dev_list, list) { struct amd_iommu *iommu = rlookup_amd_iommu(dev_data->dev); @@ -2073,6 +2078,7 @@ static int attach_device(struct device *dev, struct iommu_dev_data *dev_data = dev_iommu_priv_get(dev); struct amd_iommu *iommu = get_amd_iommu_from_dev_data(dev_data); struct pci_dev *pdev; + unsigned long flags; int ret = 0; mutex_lock(&dev_data->mutex); @@ -2113,7 +2119,9 @@ static int attach_device(struct device *dev, /* Update data structures */ dev_data->domain = domain; + spin_lock_irqsave(&domain->lock, flags); list_add(&dev_data->list, &domain->dev_list); + spin_unlock_irqrestore(&domain->lock, flags); /* Update device table */ dev_update_dte(dev_data, true); @@ -2160,6 +2168,7 @@ static void detach_device(struct device *dev) /* Flush IOTLB and wait for the flushes to finish */ spin_lock_irqsave(&domain->lock, flags); amd_iommu_domain_flush_all(domain); + list_del(&dev_data->list); spin_unlock_irqrestore(&domain->lock, flags); /* Clear GCR3 table */ @@ -2168,7 +2177,6 @@ static void detach_device(struct device *dev) /* Update data structures */ dev_data->domain = NULL; - list_del(&dev_data->list); /* decrease reference counters - needs to happen after the flushes */ pdom_detach_iommu(iommu, domain); @@ -2407,9 +2415,8 @@ static struct iommu_domain *amd_iommu_domain_alloc(unsigned int type) } static struct iommu_domain * -amd_iommu_domain_alloc_user(struct device *dev, u32 flags, - struct iommu_domain *parent, - const struct iommu_user_data *user_data) +amd_iommu_domain_alloc_paging_flags(struct device *dev, u32 flags, + const struct iommu_user_data *user_data) { unsigned int type = IOMMU_DOMAIN_UNMANAGED; @@ -2420,7 +2427,7 @@ amd_iommu_domain_alloc_user(struct device *dev, u32 flags, if (dev) iommu = get_amd_iommu_from_dev(dev); - if ((flags & ~supported_flags) || parent || user_data) + if ((flags & ~supported_flags) || user_data) return ERR_PTR(-EOPNOTSUPP); /* Allocate domain with v2 page table if IOMMU supports PASID. */ @@ -2884,7 +2891,7 @@ const struct iommu_ops amd_iommu_ops = { .release_domain = &release_domain, .identity_domain = &identity_domain.domain, .domain_alloc = amd_iommu_domain_alloc, - .domain_alloc_user = amd_iommu_domain_alloc_user, + .domain_alloc_paging_flags = amd_iommu_domain_alloc_paging_flags, .domain_alloc_sva = amd_iommu_domain_alloc_sva, .probe_device = amd_iommu_probe_device, .release_device = amd_iommu_release_device, |