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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0317d878-3d3c-4b5c-afd5-08dafd81737c X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jan 2023 20:36:05.8068 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: J9xuC5BZWMz3Lqbq2+2cx3IMwGPZ8SDj8MYsokwgEFMu6zMxW/YKfGkE5RJG+2t0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL3PR12MB6571 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230123_123623_192730_83C3EB58 X-CRM114-Status: GOOD ( 12.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org dma_alloc_cpu_table() and dma_alloc_page_table() are eventually called by iommufd through s390_iommu_map_pages() and it should not be forced to atomic. Thread the gfp parameter through the call chain starting from s390_iommu_map_pages(). Reviewed-by: Niklas Schnelle Reviewed-by: Matthew Rosato Signed-off-by: Jason Gunthorpe --- arch/s390/include/asm/pci_dma.h | 5 +++-- arch/s390/pci/pci_dma.c | 31 +++++++++++++++++-------------- drivers/iommu/s390-iommu.c | 15 +++++++++------ 3 files changed, 29 insertions(+), 22 deletions(-) diff --git a/arch/s390/include/asm/pci_dma.h b/arch/s390/include/asm/pci_dma.h index 91e63426bdc53f..7119c04c51c5c8 100644 --- a/arch/s390/include/asm/pci_dma.h +++ b/arch/s390/include/asm/pci_dma.h @@ -186,9 +186,10 @@ static inline unsigned long *get_st_pto(unsigned long entry) /* Prototypes */ void dma_free_seg_table(unsigned long); -unsigned long *dma_alloc_cpu_table(void); +unsigned long *dma_alloc_cpu_table(gfp_t gfp); void dma_cleanup_tables(unsigned long *); -unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr); +unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr, + gfp_t gfp); void dma_update_cpu_trans(unsigned long *entry, phys_addr_t page_addr, int flags); extern const struct dma_map_ops s390_pci_dma_ops; diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c index ea478d11fbd132..2f6d05d6da4f76 100644 --- a/arch/s390/pci/pci_dma.c +++ b/arch/s390/pci/pci_dma.c @@ -27,11 +27,11 @@ static int zpci_refresh_global(struct zpci_dev *zdev) zdev->iommu_pages * PAGE_SIZE); } -unsigned long *dma_alloc_cpu_table(void) +unsigned long *dma_alloc_cpu_table(gfp_t gfp) { unsigned long *table, *entry; - table = kmem_cache_alloc(dma_region_table_cache, GFP_ATOMIC); + table = kmem_cache_alloc(dma_region_table_cache, gfp); if (!table) return NULL; @@ -45,11 +45,11 @@ static void dma_free_cpu_table(void *table) kmem_cache_free(dma_region_table_cache, table); } -static unsigned long *dma_alloc_page_table(void) +static unsigned long *dma_alloc_page_table(gfp_t gfp) { unsigned long *table, *entry; - table = kmem_cache_alloc(dma_page_table_cache, GFP_ATOMIC); + table = kmem_cache_alloc(dma_page_table_cache, gfp); if (!table) return NULL; @@ -63,7 +63,7 @@ static void dma_free_page_table(void *table) kmem_cache_free(dma_page_table_cache, table); } -static unsigned long *dma_get_seg_table_origin(unsigned long *rtep) +static unsigned long *dma_get_seg_table_origin(unsigned long *rtep, gfp_t gfp) { unsigned long old_rte, rte; unsigned long *sto; @@ -72,7 +72,7 @@ static unsigned long *dma_get_seg_table_origin(unsigned long *rtep) if (reg_entry_isvalid(rte)) { sto = get_rt_sto(rte); } else { - sto = dma_alloc_cpu_table(); + sto = dma_alloc_cpu_table(gfp); if (!sto) return NULL; @@ -90,7 +90,7 @@ static unsigned long *dma_get_seg_table_origin(unsigned long *rtep) return sto; } -static unsigned long *dma_get_page_table_origin(unsigned long *step) +static unsigned long *dma_get_page_table_origin(unsigned long *step, gfp_t gfp) { unsigned long old_ste, ste; unsigned long *pto; @@ -99,7 +99,7 @@ static unsigned long *dma_get_page_table_origin(unsigned long *step) if (reg_entry_isvalid(ste)) { pto = get_st_pto(ste); } else { - pto = dma_alloc_page_table(); + pto = dma_alloc_page_table(gfp); if (!pto) return NULL; set_st_pto(&ste, virt_to_phys(pto)); @@ -116,18 +116,19 @@ static unsigned long *dma_get_page_table_origin(unsigned long *step) return pto; } -unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr) +unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr, + gfp_t gfp) { unsigned long *sto, *pto; unsigned int rtx, sx, px; rtx = calc_rtx(dma_addr); - sto = dma_get_seg_table_origin(&rto[rtx]); + sto = dma_get_seg_table_origin(&rto[rtx], gfp); if (!sto) return NULL; sx = calc_sx(dma_addr); - pto = dma_get_page_table_origin(&sto[sx]); + pto = dma_get_page_table_origin(&sto[sx], gfp); if (!pto) return NULL; @@ -170,7 +171,8 @@ static int __dma_update_trans(struct zpci_dev *zdev, phys_addr_t pa, return -EINVAL; for (i = 0; i < nr_pages; i++) { - entry = dma_walk_cpu_trans(zdev->dma_table, dma_addr); + entry = dma_walk_cpu_trans(zdev->dma_table, dma_addr, + GFP_ATOMIC); if (!entry) { rc = -ENOMEM; goto undo_cpu_trans; @@ -186,7 +188,8 @@ static int __dma_update_trans(struct zpci_dev *zdev, phys_addr_t pa, while (i-- > 0) { page_addr -= PAGE_SIZE; dma_addr -= PAGE_SIZE; - entry = dma_walk_cpu_trans(zdev->dma_table, dma_addr); + entry = dma_walk_cpu_trans(zdev->dma_table, dma_addr, + GFP_ATOMIC); if (!entry) break; dma_update_cpu_trans(entry, page_addr, flags); @@ -576,7 +579,7 @@ int zpci_dma_init_device(struct zpci_dev *zdev) spin_lock_init(&zdev->iommu_bitmap_lock); - zdev->dma_table = dma_alloc_cpu_table(); + zdev->dma_table = dma_alloc_cpu_table(GFP_ATOMIC); if (!zdev->dma_table) { rc = -ENOMEM; goto out; diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index ed33c6cce08362..654ec4411fe36c 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -52,7 +52,7 @@ static struct iommu_domain *s390_domain_alloc(unsigned domain_type) if (!s390_domain) return NULL; - s390_domain->dma_table = dma_alloc_cpu_table(); + s390_domain->dma_table = dma_alloc_cpu_table(GFP_ATOMIC); if (!s390_domain->dma_table) { kfree(s390_domain); return NULL; @@ -260,7 +260,8 @@ static void s390_iommu_iotlb_sync_map(struct iommu_domain *domain, static int s390_iommu_validate_trans(struct s390_domain *s390_domain, phys_addr_t pa, dma_addr_t dma_addr, - unsigned long nr_pages, int flags) + unsigned long nr_pages, int flags, + gfp_t gfp) { phys_addr_t page_addr = pa & PAGE_MASK; unsigned long *entry; @@ -268,7 +269,8 @@ static int s390_iommu_validate_trans(struct s390_domain *s390_domain, int rc; for (i = 0; i < nr_pages; i++) { - entry = dma_walk_cpu_trans(s390_domain->dma_table, dma_addr); + entry = dma_walk_cpu_trans(s390_domain->dma_table, dma_addr, + gfp); if (unlikely(!entry)) { rc = -ENOMEM; goto undo_cpu_trans; @@ -284,7 +286,7 @@ static int s390_iommu_validate_trans(struct s390_domain *s390_domain, while (i-- > 0) { dma_addr -= PAGE_SIZE; entry = dma_walk_cpu_trans(s390_domain->dma_table, - dma_addr); + dma_addr, gfp); if (!entry) break; dma_update_cpu_trans(entry, 0, ZPCI_PTE_INVALID); @@ -301,7 +303,8 @@ static int s390_iommu_invalidate_trans(struct s390_domain *s390_domain, int rc = 0; for (i = 0; i < nr_pages; i++) { - entry = dma_walk_cpu_trans(s390_domain->dma_table, dma_addr); + entry = dma_walk_cpu_trans(s390_domain->dma_table, dma_addr, + GFP_ATOMIC); if (unlikely(!entry)) { rc = -EINVAL; break; @@ -339,7 +342,7 @@ static int s390_iommu_map_pages(struct iommu_domain *domain, flags |= ZPCI_TABLE_PROTECTED; rc = s390_iommu_validate_trans(s390_domain, paddr, iova, - pgcount, flags); + pgcount, flags, gfp); if (!rc) *mapped = size;