diff options
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 33 |
1 files changed, 10 insertions, 23 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index fc2765ccdb57..687f18f65cea 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -481,7 +481,7 @@ struct deferred_flush_data { struct deferred_flush_table *tables; }; -DEFINE_PER_CPU(struct deferred_flush_data, deferred_flush); +static DEFINE_PER_CPU(struct deferred_flush_data, deferred_flush); /* bitmap for indexing intel_iommus */ static int g_num_of_iommus; @@ -2390,7 +2390,7 @@ static struct dmar_domain *find_domain(struct device *dev) /* No lock here, assumes no domain exit in normal case */ info = dev->archdata.iommu; - if (info) + if (likely(info)) return info->domain; return NULL; } @@ -3478,7 +3478,7 @@ static unsigned long intel_alloc_iova(struct device *dev, return iova_pfn; } -static struct dmar_domain *__get_valid_domain_for_dev(struct device *dev) +static struct dmar_domain *get_valid_domain_for_dev(struct device *dev) { struct dmar_domain *domain, *tmp; struct dmar_rmrr_unit *rmrr; @@ -3525,18 +3525,6 @@ out: return domain; } -static inline struct dmar_domain *get_valid_domain_for_dev(struct device *dev) -{ - struct device_domain_info *info; - - /* No lock here, assumes no domain exit in normal case */ - info = dev->archdata.iommu; - if (likely(info)) - return info->domain; - - return __get_valid_domain_for_dev(dev); -} - /* Check if the dev needs to go through non-identity map and unmap process.*/ static int iommu_no_mapping(struct device *dev) { @@ -3725,10 +3713,8 @@ static void add_unmap(struct dmar_domain *dom, unsigned long iova_pfn, struct intel_iommu *iommu; struct deferred_flush_entry *entry; struct deferred_flush_data *flush_data; - unsigned int cpuid; - cpuid = get_cpu(); - flush_data = per_cpu_ptr(&deferred_flush, cpuid); + flush_data = raw_cpu_ptr(&deferred_flush); /* Flush all CPUs' entries to avoid deferring too much. If * this becomes a bottleneck, can just flush us, and rely on @@ -3761,8 +3747,6 @@ static void add_unmap(struct dmar_domain *dom, unsigned long iova_pfn, } flush_data->size++; spin_unlock_irqrestore(&flush_data->lock, flags); - - put_cpu(); } static void intel_unmap(struct device *dev, dma_addr_t dev_addr, size_t size) @@ -3973,7 +3957,7 @@ static int intel_mapping_error(struct device *dev, dma_addr_t dma_addr) return !dma_addr; } -struct dma_map_ops intel_dma_ops = { +const struct dma_map_ops intel_dma_ops = { .alloc = intel_alloc_coherent, .free = intel_free_coherent, .map_sg = intel_map_sg, @@ -3981,6 +3965,9 @@ struct dma_map_ops intel_dma_ops = { .map_page = intel_map_page, .unmap_page = intel_unmap_page, .mapping_error = intel_mapping_error, +#ifdef CONFIG_X86 + .dma_supported = x86_dma_supported, +#endif }; static inline int iommu_domain_cache_init(void) @@ -4315,7 +4302,7 @@ int dmar_parse_one_atsr(struct acpi_dmar_header *hdr, void *arg) struct acpi_dmar_atsr *atsr; struct dmar_atsr_unit *atsru; - if (system_state != SYSTEM_BOOTING && !intel_iommu_enabled) + if (system_state >= SYSTEM_RUNNING && !intel_iommu_enabled) return 0; atsr = container_of(hdr, struct acpi_dmar_atsr, header); @@ -4565,7 +4552,7 @@ int dmar_iommu_notify_scope_dev(struct dmar_pci_notify_info *info) struct acpi_dmar_atsr *atsr; struct acpi_dmar_reserved_memory *rmrr; - if (!intel_iommu_enabled && system_state != SYSTEM_BOOTING) + if (!intel_iommu_enabled && system_state >= SYSTEM_RUNNING) return 0; list_for_each_entry(rmrru, &dmar_rmrr_units, list) { |