diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index b155c7af7d15..e3fe1a148187 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -515,8 +515,9 @@ static int domain_update_device_node(struct dmar_domain *domain) { struct device_domain_info *info; int nid = NUMA_NO_NODE; + unsigned long flags; - spin_lock(&domain->lock); + spin_lock_irqsave(&domain->lock, flags); list_for_each_entry(info, &domain->devices, link) { /* * There could possibly be multiple device numa nodes as devices @@ -528,7 +529,7 @@ static int domain_update_device_node(struct dmar_domain *domain) if (nid != NUMA_NO_NODE) break; } - spin_unlock(&domain->lock); + spin_unlock_irqrestore(&domain->lock, flags); return nid; } @@ -1362,19 +1363,20 @@ iommu_support_dev_iotlb(struct dmar_domain *domain, struct intel_iommu *iommu, u8 bus, u8 devfn) { struct device_domain_info *info; + unsigned long flags; if (!iommu->qi) return NULL; - spin_lock(&domain->lock); + spin_lock_irqsave(&domain->lock, flags); list_for_each_entry(info, &domain->devices, link) { if (info->iommu == iommu && info->bus == bus && info->devfn == devfn) { - spin_unlock(&domain->lock); + spin_unlock_irqrestore(&domain->lock, flags); return info->ats_supported ? info : NULL; } } - spin_unlock(&domain->lock); + spin_unlock_irqrestore(&domain->lock, flags); return NULL; } @@ -1383,8 +1385,9 @@ static void domain_update_iotlb(struct dmar_domain *domain) { struct device_domain_info *info; bool has_iotlb_device = false; + unsigned long flags; - spin_lock(&domain->lock); + spin_lock_irqsave(&domain->lock, flags); list_for_each_entry(info, &domain->devices, link) { if (info->ats_enabled) { has_iotlb_device = true; @@ -1392,7 +1395,7 @@ static void domain_update_iotlb(struct dmar_domain *domain) } } domain->has_iotlb_device = has_iotlb_device; - spin_unlock(&domain->lock); + spin_unlock_irqrestore(&domain->lock, flags); } static void iommu_enable_dev_iotlb(struct device_domain_info *info) @@ -1484,14 +1487,15 @@ static void iommu_flush_dev_iotlb(struct dmar_domain *domain, u64 addr, unsigned mask) { struct device_domain_info *info; + unsigned long flags; if (!domain->has_iotlb_device) return; - spin_lock(&domain->lock); + spin_lock_irqsave(&domain->lock, flags); list_for_each_entry(info, &domain->devices, link) __iommu_flush_dev_iotlb(info, addr, mask); - spin_unlock(&domain->lock); + spin_unlock_irqrestore(&domain->lock, flags); } static void iommu_flush_iotlb_psi(struct intel_iommu *iommu, @@ -2453,6 +2457,7 @@ static int domain_add_dev_info(struct dmar_domain *domain, struct device *dev) { struct device_domain_info *info = dev_iommu_priv_get(dev); struct intel_iommu *iommu; + unsigned long flags; u8 bus, devfn; int ret; @@ -2464,9 +2469,9 @@ static int domain_add_dev_info(struct dmar_domain *domain, struct device *dev) if (ret) return ret; info->domain = domain; - spin_lock(&domain->lock); + spin_lock_irqsave(&domain->lock, flags); list_add(&info->link, &domain->devices); - spin_unlock(&domain->lock); + spin_unlock_irqrestore(&domain->lock, flags); /* PASID table is mandatory for a PCI device in scalable mode. */ if (sm_supported(iommu) && !dev_is_real_dma_subdevice(dev)) { @@ -4090,6 +4095,7 @@ static void dmar_remove_one_dev_info(struct device *dev) struct device_domain_info *info = dev_iommu_priv_get(dev); struct dmar_domain *domain = info->domain; struct intel_iommu *iommu = info->iommu; + unsigned long flags; if (!dev_is_real_dma_subdevice(info->dev)) { if (dev_is_pci(info->dev) && sm_supported(iommu)) @@ -4101,9 +4107,9 @@ static void dmar_remove_one_dev_info(struct device *dev) intel_pasid_free_table(info->dev); } - spin_lock(&domain->lock); + spin_lock_irqsave(&domain->lock, flags); list_del(&info->link); - spin_unlock(&domain->lock); + spin_unlock_irqrestore(&domain->lock, flags); domain_detach_iommu(domain, iommu); info->domain = NULL; @@ -4422,19 +4428,20 @@ static void domain_set_force_snooping(struct dmar_domain *domain) static bool intel_iommu_enforce_cache_coherency(struct iommu_domain *domain) { struct dmar_domain *dmar_domain = to_dmar_domain(domain); + unsigned long flags; if (dmar_domain->force_snooping) return true; - spin_lock(&dmar_domain->lock); + spin_lock_irqsave(&dmar_domain->lock, flags); if (!domain_support_force_snooping(dmar_domain)) { - spin_unlock(&dmar_domain->lock); + spin_unlock_irqrestore(&dmar_domain->lock, flags); return false; } domain_set_force_snooping(dmar_domain); dmar_domain->force_snooping = true; - spin_unlock(&dmar_domain->lock); + spin_unlock_irqrestore(&dmar_domain->lock, flags); return true; } |