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/linux/drivers/fpga/
H A Ddfl-afu-dma-region.c3 * Driver for FPGA Accelerated Function Unit (AFU) DMA Region Management
27 * afu_dma_pin_pages - pin pages of given dma memory region
29 * @region: dma memory region to be pinned
35 struct dfl_afu_dma_region *region) in afu_dma_pin_pages() argument
37 int npages = region->length >> PAGE_SHIFT; in afu_dma_pin_pages()
45 region->pages = kzalloc_objs(struct page *, npages); in afu_dma_pin_pages()
46 if (!region->pages) { in afu_dma_pin_pages()
51 pinned = pin_user_pages_fast(region->user_addr, npages, FOLL_WRITE, in afu_dma_pin_pages()
52 region->pages); in afu_dma_pin_pages()
66 unpin_user_pages(region->pages, pinned); in afu_dma_pin_pages()
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H A Dfpga-region.c3 * FPGA Region - Support for FPGA programming under Linux
10 #include <linux/fpga/fpga-region.h>
36 * fpga_region_get - get an exclusive reference to an fpga region
37 * @region: FPGA Region struct
39 * Caller should call fpga_region_put() when done with region.
43 * * -EBUSY if someone already has a reference to the region.
46 static struct fpga_region *fpga_region_get(struct fpga_region *region) in fpga_region_get() argument
48 struct device *dev = &region->dev; in fpga_region_get()
50 if (!mutex_trylock(&region->mutex)) { in fpga_region_get()
51 dev_dbg(dev, "%s: FPGA Region already in use\n", __func__); in fpga_region_get()
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/linux/drivers/hv/
H A Dmshv_regions.c5 * Memory region management for mshv_root module.
57 * in a region.
58 * @region : Pointer to the memory region structure.
60 * @page_offset: Offset into the region's pages array to start processing.
64 * This function scans the region's pages starting from @page_offset,
75 static long mshv_region_process_chunk(struct mshv_mem_region *region,
78 int (*handler)(struct mshv_mem_region *region, in mshv_region_process_chunk()
84 u64 gfn = region->start_gfn + page_offset; in mshv_region_process_chunk()
90 page = region in mshv_region_process_chunk()
77 mshv_region_process_chunk(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,int (* handler)(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,bool huge_page)) mshv_region_process_chunk() argument
80 mshv_region_process_chunk(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,int (* handler)(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,bool huge_page)) mshv_region_process_chunk() argument
139 mshv_region_process_range(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,int (* handler)(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,bool huge_page)) mshv_region_process_range() argument
142 mshv_region_process_range(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,int (* handler)(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,bool huge_page)) mshv_region_process_range() argument
178 struct mshv_mem_region *region; mshv_region_create() local
198 mshv_region_chunk_share(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,bool huge_page) mshv_region_chunk_share() argument
214 mshv_region_share(struct mshv_mem_region * region) mshv_region_share() argument
223 mshv_region_chunk_unshare(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,bool huge_page) mshv_region_chunk_unshare() argument
237 mshv_region_unshare(struct mshv_mem_region * region) mshv_region_unshare() argument
246 mshv_region_chunk_remap(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,bool huge_page) mshv_region_chunk_remap() argument
260 mshv_region_remap_pages(struct mshv_mem_region * region,u32 map_flags,u64 page_offset,u64 page_count) mshv_region_remap_pages() argument
269 mshv_region_map(struct mshv_mem_region * region) mshv_region_map() argument
277 mshv_region_invalidate_pages(struct mshv_mem_region * region,u64 page_offset,u64 page_count) mshv_region_invalidate_pages() argument
287 mshv_region_invalidate(struct mshv_mem_region * region) mshv_region_invalidate() argument
292 mshv_region_pin(struct mshv_mem_region * region) mshv_region_pin() argument
330 mshv_region_chunk_unmap(struct mshv_mem_region * region,u32 flags,u64 page_offset,u64 page_count,bool huge_page) mshv_region_chunk_unmap() argument
343 mshv_region_unmap(struct mshv_mem_region * region) mshv_region_unmap() argument
352 struct mshv_mem_region *region = mshv_region_destroy() local
377 mshv_region_put(struct mshv_mem_region * region) mshv_region_put() argument
382 mshv_region_get(struct mshv_mem_region * region) mshv_region_get() argument
404 mshv_region_hmm_fault_and_lock(struct mshv_mem_region * region,struct hmm_range * range) mshv_region_hmm_fault_and_lock() argument
439 mshv_region_range_fault(struct mshv_mem_region * region,u64 page_offset,u64 page_count) mshv_region_range_fault() argument
477 mshv_region_handle_gfn_fault(struct mshv_mem_region * region,u64 gfn) mshv_region_handle_gfn_fault() argument
523 struct mshv_mem_region *region = container_of(mni, mshv_region_interval_invalidate() local
571 mshv_region_movable_fini(struct mshv_mem_region * region) mshv_region_movable_fini() argument
576 mshv_region_movable_init(struct mshv_mem_region * region) mshv_region_movable_init() argument
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/linux/net/devlink/
H A Dregion.c29 struct devlink_region *region; member
37 struct devlink_region *region; in devlink_region_get_by_name() local
39 list_for_each_entry(region, &devlink->region_list, list) in devlink_region_get_by_name()
40 if (!strcmp(region->ops->name, region_name)) in devlink_region_get_by_name()
41 return region; in devlink_region_get_by_name()
50 struct devlink_region *region; in devlink_port_region_get_by_name() local
52 list_for_each_entry(region, &port->region_list, list) in devlink_port_region_get_by_name()
53 if (!strcmp(region->port_ops->name, region_name)) in devlink_port_region_get_by_name()
54 return region; in devlink_port_region_get_by_name()
60 devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id) in devlink_region_snapshot_get_by_id() argument
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/linux/tools/testing/selftests/kvm/lib/
H A Dkvm_util.c266 * range addressed by a single page table into a low and high region
268 * the VA region spans [0, 2^(va_bits - 1)), [-(2^(va_bits - 1), -1].
424 * maximum page table size for a memory region will be when the in vm_nr_pages_required()
496 * Force GUEST_MEMFD for the primary memory region if necessary, e.g. in __vm_create()
513 * MMIO region would prevent silently clobbering the MMIO region. in __vm_create()
516 ucall_init(vm, slot0->region.guest_phys_addr + slot0->region.memory_size); in __vm_create()
596 struct userspace_mem_region *region; in kvm_vm_restart() local
602 hash_for_each(vmp->regions.slot_hash, ctr, region, slot_node) { in kvm_vm_restart()
603 int ret = ioctl(vmp->fd, KVM_SET_USER_MEMORY_REGION2, &region->region); in kvm_vm_restart()
609 ret, errno, region->region.slot, in kvm_vm_restart()
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/linux/tools/testing/selftests/vfio/
H A Dvfio_dma_mapping_test.c138 struct dma_region region; in TEST_F() local
144 region.vaddr = mmap(NULL, size, PROT_READ | PROT_WRITE, flags, -1, 0); in TEST_F()
147 if (flags & MAP_HUGETLB && region.vaddr == MAP_FAILED) in TEST_F()
150 ASSERT_NE(region.vaddr, MAP_FAILED); in TEST_F()
152 region.iova = iova_allocator_alloc(self->iova_allocator, size); in TEST_F()
153 region.size = size; in TEST_F()
155 iommu_map(self->iommu, &region); in TEST_F()
156 printf("Mapped HVA %p (size 0x%lx) at IOVA 0x%lx\n", region.vaddr, size, region.iova); in TEST_F()
158 ASSERT_EQ(region.iova, to_iova(self->device, region.vaddr)); in TEST_F()
160 rc = iommu_mapping_get(device_bdf, region.iova, &mapping); in TEST_F()
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/linux/drivers/net/ethernet/mellanox/mlxsw/
H A Dspectrum1_acl_tcam.c14 struct mlxsw_sp_acl_tcam_region *region; member
62 struct mlxsw_sp1_acl_tcam_region *region) in mlxsw_sp1_acl_ctcam_region_catchall_add() argument
67 mlxsw_sp_acl_ctcam_chunk_init(&region->cregion, in mlxsw_sp1_acl_ctcam_region_catchall_add()
68 &region->catchall.cchunk, in mlxsw_sp1_acl_ctcam_region_catchall_add()
81 err = mlxsw_sp_acl_ctcam_entry_add(mlxsw_sp, &region->cregion, in mlxsw_sp1_acl_ctcam_region_catchall_add()
82 &region->catchall.cchunk, in mlxsw_sp1_acl_ctcam_region_catchall_add()
83 &region->catchall.centry, in mlxsw_sp1_acl_ctcam_region_catchall_add()
87 region->catchall.rulei = rulei; in mlxsw_sp1_acl_ctcam_region_catchall_add()
95 mlxsw_sp_acl_ctcam_chunk_fini(&region->catchall.cchunk); in mlxsw_sp1_acl_ctcam_region_catchall_add()
101 struct mlxsw_sp1_acl_tcam_region *region) in mlxsw_sp1_acl_ctcam_region_catchall_del() argument
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H A Dspectrum_acl_ctcam.c15 struct mlxsw_sp_acl_tcam_region *region, in mlxsw_sp_acl_ctcam_region_resize() argument
21 region->key_type, new_size, region->id, in mlxsw_sp_acl_ctcam_region_resize()
22 region->tcam_region_info); in mlxsw_sp_acl_ctcam_region_resize()
28 struct mlxsw_sp_acl_tcam_region *region, in mlxsw_sp_acl_ctcam_region_move() argument
34 region->tcam_region_info, src_offset, in mlxsw_sp_acl_ctcam_region_move()
35 region->tcam_region_info, dst_offset, size); in mlxsw_sp_acl_ctcam_region_move()
46 struct mlxsw_sp_acl_tcam_region *region = cregion->region; in mlxsw_sp_acl_ctcam_region_entry_insert() local
61 region->tcam_region_info, in mlxsw_sp_acl_ctcam_region_entry_insert()
65 mlxsw_afk_encode(afk, region->key_info, &rulei->values, key, mask); in mlxsw_sp_acl_ctcam_region_entry_insert()
94 cregion->region->tcam_region_info, in mlxsw_sp_acl_ctcam_region_entry_remove()
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H A Dspectrum_acl_tcam.c109 struct mutex lock; /* guards region list updates */
146 struct mutex lock; /* Protects consistency of region, region2 pointers
149 struct mlxsw_sp_acl_tcam_region *region; member
169 struct mlxsw_sp_acl_tcam_region *region; member
210 struct mlxsw_sp_acl_tcam_region *region; in mlxsw_sp_acl_tcam_group_update() local
215 list_for_each_entry(region, &group->region_list, list) { in mlxsw_sp_acl_tcam_group_update()
219 if (region->list.next != &group->region_list && in mlxsw_sp_acl_tcam_group_update()
220 list_next_entry(region, list)->vregion == region->vregion) in mlxsw_sp_acl_tcam_group_update()
223 region->id, multi); in mlxsw_sp_acl_tcam_group_update()
385 struct mlxsw_sp_acl_tcam_region *region, in mlxsw_sp_acl_tcam_group_region_attach() argument
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/linux/drivers/vfio/pci/pds/
H A Ddirty.c72 static int pds_vfio_dirty_alloc_bitmaps(struct pds_vfio_region *region, in pds_vfio_dirty_alloc_bitmaps() argument
87 region->host_seq = host_seq_bmp; in pds_vfio_dirty_alloc_bitmaps()
88 region->host_ack = host_ack_bmp; in pds_vfio_dirty_alloc_bitmaps()
89 region->bmp_bytes = bytes; in pds_vfio_dirty_alloc_bitmaps()
100 struct pds_vfio_region *region = &dirty->regions[i]; in pds_vfio_dirty_free_bitmaps() local
102 vfree(region->host_seq); in pds_vfio_dirty_free_bitmaps()
103 vfree(region->host_ack); in pds_vfio_dirty_free_bitmaps()
104 region->host_seq = NULL; in pds_vfio_dirty_free_bitmaps()
105 region->host_ack = NULL; in pds_vfio_dirty_free_bitmaps()
106 region->bmp_bytes = 0; in pds_vfio_dirty_free_bitmaps()
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/linux/Documentation/networking/devlink/
H A Ddevlink-region.rst4 Devlink Region
11 region can then be accessed via the devlink region interface.
13 Region snapshots are collected by the driver, and can be accessed via read
17 Snapshot identifiers are scoped to the devlink instance, not a region.
21 The major benefit to creating a region is to provide access to internal
29 requested snapshots must implement the ``.snapshot`` callback for the region
38 region should implement the ``.read`` callback in the ``devlink_region_ops``
48 $ devlink region help
49 $ devlink region show [ DEV/REGION ]
50 $ devlink region del DEV/REGION snapshot SNAPSHOT_ID
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H A Diosm.rst59 each having one secure bin file and at least one Loadmap/Region file. For flashing
61 data required for flashing. The data like region count and address of each region
91 b) Flashing the Loadmap/Region file
109 - The summary of exception details logged as part of this region.
111 - This region contains the details related to the exception occurred in the
114 - This region contains the logs related to the modem CDD driver.
116 - This region contains the eeprom logs.
118 - This region contains the current instance of bootloader logs.
120 - This region contains the previous instance of bootloader logs.
123 Region commands
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/linux/drivers/acpi/pmic/
H A DKconfig4 bool "PMIC (Power Management Integrated Circuit) operation region support"
7 region of the PMIC chip. The operation region can be used
14 bool "ACPI operation region support for Bay Trail Crystal Cove PMIC"
17 This config adds ACPI operation region support for the Bay Trail
21 bool "ACPI operation region support for Cherry Trail Crystal Cove PMIC"
24 This config adds ACPI operation region support for the Cherry Trail
28 bool "ACPI operation region support for XPower AXP288 PMIC"
31 This config adds ACPI operation region support for XPower AXP288 PMIC.
34 bool "ACPI operation region support for BXT WhiskeyCove PMIC"
37 This config adds ACPI operation region support for BXT WhiskeyCove PMIC.
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/linux/kernel/cgroup/
H A Ddmem.c23 * @ref: References keeping the region alive.
24 * Keeps the region reference alive after a succesful RCU lookup.
38 * @pools: List of pools linked to this region.
43 /** @size: Size of region, in bytes */
50 * @unregistered: Whether the region is unregistered by its caller.
51 * No new pools should be added to the region afterwards.
63 struct dmem_cgroup_region *region; member
66 /* css node, RCU protected against region teardown */
83 * - Registering and unregistering region to/from list, requires global lock.
85 * - Adding a dmem_cgroup_pool_state to a region list.
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/linux/arch/arm/mm/
H A Dpmsa-v7.c19 struct region { struct
25 static struct region __initdata mem[MPU_MAX_REGIONS]; argument
27 static struct region __initdata xip[MPU_MAX_REGIONS];
46 /* Region number */
52 /* Data-side / unified region attributes */
54 /* Region access control register */
60 /* Region size register */
66 /* Region base address register */
76 /* Optional instruction-side region attributes */
78 /* I-side Region access control register */
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/linux/Documentation/devicetree/bindings/fpga/
H A Dfpga-region.yaml4 $id: http://devicetree.org/schemas/fpga/fpga-region.yaml#
7 title: FPGA Region
17 - FPGA Region
44 Partial Reconfiguration Region (PRR)
51 into a PRR must fit and must use a subset of the region's connections.
52 * The busses within the FPGA are split such that each region gets its own
69 * During Partial Reconfiguration of a specific region, that region's bridge
105 region (PRR0-2) gets its own split of the busses that is independently gated by
112 When a DT overlay that targets an FPGA Region is applied, the FPGA Region will
121 When the overlay is removed, the child nodes will be removed and the FPGA Region
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/linux/drivers/platform/x86/intel/pmt/
H A Ddiscovery-kunit.c27 struct telemetry_region *region = &feature_group->regions[i]; in validate_pmt_regions() local
29 kunit_info(test, " - Region %d: cdie_mask=%u, package_id=%u, partition=%u, segment=%u,", in validate_pmt_regions()
30 i, region->plat_info.cdie_mask, region->plat_info.package_id, in validate_pmt_regions()
31 region->plat_info.partition, region->plat_info.segment); in validate_pmt_regions()
33 region->plat_info.bus_number, region->plat_info.device_number, in validate_pmt_regions()
34 region->plat_info.function_number, region->guid); in validate_pmt_regions()
35 kunit_info(test, "\t\taddr=%p, size=%zu, num_rmids=%u", region->addr, region->size, in validate_pmt_regions()
36 region->num_rmids); in validate_pmt_regions()
39 KUNIT_ASSERT_GE(test, region->plat_info.cdie_mask, 0); in validate_pmt_regions()
40 KUNIT_ASSERT_GE(test, region->plat_info.package_id, 0); in validate_pmt_regions()
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/linux/drivers/fpga/tests/
H A Dfpga-region-test.c3 * KUnit test for the FPGA Region
14 #include <linux/fpga/fpga-region.h>
32 struct fpga_region *region; member
64 * of the Region.
90 static int fake_region_get_bridges(struct fpga_region *region) in fake_region_get_bridges() argument
92 struct fpga_bridge *bridge = region->priv; in fake_region_get_bridges()
94 return fpga_bridge_get_to_list(bridge->dev.parent, region->info, &region->bridge_list); in fake_region_get_bridges()
105 struct fpga_region *region; in fpga_region_test_class_find() local
107 region = fpga_region_class_find(NULL, ctx->region_dev, fake_region_match); in fpga_region_test_class_find()
108 KUNIT_EXPECT_PTR_EQ(test, region, ctx->region); in fpga_region_test_class_find()
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/linux/drivers/virt/acrn/
H A Dmm.c19 static int modify_region(struct acrn_vm *vm, struct vm_memory_region_op *region) in modify_region() argument
30 regions->regions_gpa = virt_to_phys(region); in modify_region()
35 "Failed to set memory region for VM[%u]!\n", vm->vmid); in modify_region()
42 * acrn_mm_region_add() - Set up the EPT mapping of a memory region.
46 * @size: Size of the region.
55 struct vm_memory_region_op *region; in acrn_mm_region_add() local
58 region = kzalloc_obj(*region); in acrn_mm_region_add()
59 if (!region) in acrn_mm_region_add()
62 region->type = ACRN_MEM_REGION_ADD; in acrn_mm_region_add()
63 region->user_vm_pa = user_gpa; in acrn_mm_region_add()
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/linux/drivers/gpu/drm/amd/display/dc/hwss/dcn351/
H A Ddcn351_hwseq.c83 * ONO Region 11, DCPG 19: dsc3
84 * ONO Region 10, DCPG 3: dchubp3, dpp3
85 * ONO Region 9, DCPG 18: dsc2
86 * ONO Region 8, DCPG 2: dchubp2, dpp2
87 * ONO Region 7, DCPG 17: dsc1
88 * ONO Region 6, DCPG 1: dchubp1, dpp1
89 * ONO Region 5, DCPG 16: dsc0
90 * ONO Region 4, DCPG 0: dchubp0, dpp0
91 * ONO Region 3, DCPG 25: hpo - SKIPPED. Should be kept on
92 * ONO Region 2, DCPG 24: mpc opp optc dwb
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/linux/arch/x86/boot/compressed/
H A Dkaslr.c143 * memmap=nn@ss specifies usable region, should in parse_memmap()
152 * system can use. Region above the limit should be avoided. in parse_memmap()
362 * Avoid the region that is unsafe to overlap during in mem_avoid_init()
401 * overlap region with the lowest address.
463 static void store_slot_info(struct mem_vector *region, unsigned long image_size) in store_slot_info() argument
470 slot_area.addr = region->start; in store_slot_info()
471 slot_area.num = 1 + (region->size - image_size) / CONFIG_PHYSICAL_ALIGN; in store_slot_info()
478 * Skip as many 1GB huge pages as possible in the passed region
482 process_gb_huge_pages(struct mem_vector *region, unsigned long image_size) in process_gb_huge_pages() argument
489 store_slot_info(region, image_size); in process_gb_huge_pages()
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/linux/drivers/s390/cio/
H A Dvfio_ccw_chp.c22 struct ccw_schib_region *region; in vfio_ccw_schib_region_read() local
25 if (pos + count > sizeof(*region)) in vfio_ccw_schib_region_read()
29 region = private->region[i].data; in vfio_ccw_schib_region_read()
36 memcpy(region, &sch->schib, sizeof(*region)); in vfio_ccw_schib_region_read()
38 if (copy_to_user(buf, (void *)region + pos, count)) { in vfio_ccw_schib_region_read()
59 struct vfio_ccw_region *region) in vfio_ccw_schib_region_release() argument
86 struct ccw_crw_region *region; in vfio_ccw_crw_region_read() local
90 if (pos + count > sizeof(*region)) in vfio_ccw_crw_region_read()
100 region = private->region[i].data; in vfio_ccw_crw_region_read()
103 memcpy(&region->crw, &crw->crw, sizeof(region->crw)); in vfio_ccw_crw_region_read()
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H A Dvfio_ccw_async.c3 * Async I/O region for vfio_ccw
20 struct ccw_cmd_region *region; in vfio_ccw_async_region_read() local
23 if (pos + count > sizeof(*region)) in vfio_ccw_async_region_read()
27 region = private->region[i].data; in vfio_ccw_async_region_read()
28 if (copy_to_user(buf, (void *)region + pos, count)) in vfio_ccw_async_region_read()
42 struct ccw_cmd_region *region; in vfio_ccw_async_region_write() local
45 if (pos + count > sizeof(*region)) in vfio_ccw_async_region_write()
51 region = private->region[i].data; in vfio_ccw_async_region_write()
52 if (copy_from_user((void *)region + pos, buf, count)) { in vfio_ccw_async_region_write()
59 ret = region->ret_code ? region->ret_code : count; in vfio_ccw_async_region_write()
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/linux/tools/testing/memblock/tests/
H A Dbasic_api.c38 * Expect to create a new entry. The region counter and total memory get
47 struct region r = { in memblock_add_simple_check()
71 * Expect to create a new entry. The region counter and total memory get
80 struct region r = { in memblock_add_node_simple_check()
115 * region counter fields get updated.
124 struct region r1 = { in memblock_add_disjoint_check()
128 struct region r2 = { in memblock_add_disjoint_check()
166 * Expect to merge the two entries into one region that starts at r2.base
168 * the available memory is updated, and the region counter stays the same.
177 struct region r1 = { in memblock_add_overlap_top_check()
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/linux/drivers/md/
H A Ddm-region-hash.c10 #include <linux/dm-region-hash.h>
20 #define DM_MSG_PREFIX "region hash"
24 * Region hash
27 * region can be in one of three states: clean, dirty,
30 * In addition to being present in the hash table a region _may_
45 * io, up the recovery_count, and remove the region from the
64 /* holds persistent region state */
125 sector_t dm_rh_region_to_sector(struct dm_region_hash *rh, region_t region) in dm_rh_region_to_sector() argument
127 return region << rh->region_shift; in dm_rh_region_to_sector()
189 DMERR("unable to allocate region hash memory"); in dm_region_hash_create()
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