| /linux/drivers/gpu/drm/nouveau/nvkm/core/ |
| H A D | memory.c | 34 struct nvkm_tags *tags = *ptags; in nvkm_memory_tags_put() local
35 if (tags) { in nvkm_memory_tags_put()
36 mutex_lock(&fb->tags.mutex); in nvkm_memory_tags_put()
37 if (refcount_dec_and_test(&tags->refcount)) { in nvkm_memory_tags_put()
38 nvkm_mm_free(&fb->tags.mm, &tags->mn); in nvkm_memory_tags_put()
39 kfree(memory->tags); in nvkm_memory_tags_put()
40 memory->tags = NULL; in nvkm_memory_tags_put()
42 mutex_unlock(&fb->tags.mutex); in nvkm_memory_tags_put()
53 struct nvkm_tags *tags; in nvkm_memory_tags_get() local
55 mutex_lock(&fb->tags.mutex); in nvkm_memory_tags_get()
[all …]
|
| /linux/Documentation/arch/arm64/ |
| H A D | memory-tagging-extension.rst | 36 To access the allocation tags, a user process must enable the Tagged
40 ``PROT_MTE`` - Pages allow access to the MTE allocation tags.
44 supported and the allocation tags can be shared between processes.
55 ``MADV_FREE`` may have the allocation tags cleared (set to 0) at any
62 the logical and allocation tags occurs on access, there are three
108 **Note**: There are no *match-all* logical tags available for user
119 Excluding Tags in the ``IRG``, ``ADDG`` and ``SUBG`` instructions
122 The architecture allows excluding certain tags to be randomly generated
124 excludes all tags other than 0. A user thread can enable specific tags
126 flags, 0, 0, 0)`` system call where ``flags`` contains the tags bitmap
[all …]
|
| H A D | tagged-pointers.rst | 38 Using non-zero address tags in any of these locations when the
44 passing non-zero address tags to the kernel via system calls is
49 address tags may suffer impaired or inaccurate debug and profiling
53 Preserving tags
56 When delivering signals, non-zero tags are not preserved in
59 that signal handlers in applications making use of tags cannot rely
74 Non-zero tags are never preserved in sigcontext.fault_address
|
| /linux/arch/arm64/lib/ |
| H A D | mte.S | 27 * Clear the tags in a page
40 * Zero the page and tags at the same time
66 * Copy the tags from the source page to the destination one
84 * Read tags from a user buffer (one tag per byte) and set the corresponding
85 * tags at the given kernel address. Used by PTRACE_POKEMTETAGS.
88 * x2 - number of tags/bytes (n)
90 * x0 - number of tags read/set
104 2: sub x0, x1, x3 // update the number of tags set
109 * Get the tags from a kernel address range and write the tag values to the
113 * x2 - number of tags/bytes (n)
[all …]
|
| /linux/arch/arm/kernel/ |
| H A D | atags_parse.c | 11 * of variable-sized tags to the kernel. The first tag must be a ATAG_CORE
158 * Parse all tags in the list, checking both the global and architecture
179 struct tag *tags = (struct tag *)&default_tags; in setup_machine_tags() local
199 tags = atags_vaddr; in setup_machine_tags()
201 tags = (void *)(PAGE_OFFSET + mdesc->atag_offset); in setup_machine_tags()
208 if (tags->hdr.tag != ATAG_CORE) in setup_machine_tags()
209 convert_to_tag_list(tags); in setup_machine_tags()
211 if (tags->hdr.tag != ATAG_CORE) { in setup_machine_tags()
213 tags = (struct tag *)&default_tags; in setup_machine_tags()
217 mdesc->fixup(tags, &from); in setup_machine_tags()
[all …]
|
| /linux/Documentation/arch/sparc/ |
| H A D | adi.rst | 6 ADI allows a task to set version tags on any subset of its address
7 space. Once ADI is enabled and version tags are set for ranges of
26 be repeated for entire page to set tags for entire page.
34 SPARC M7 processor, MMU uses bits 63-60 for version tags and ADI block
41 kernel sets the PSTATE.mcde bit for the task. Version tags for memory
61 - Version tags are set on virtual addresses from userspace even though
62 tags are stored in physical memory. Tags are set on a physical page
66 - When a task frees a memory page it had set version tags on, the page
69 version tags as well for the page. If a page allocated to a task is
70 freed and allocated back to the same task, old version tags set by the
[all …]
|
| /linux/arch/arm64/kernel/ |
| H A D | mte.c | 54 /* ensure the tags are visible before the PTE is set */ in mte_sync_tags()
60 /* if PG_mte_tagged is set, tags have already been initialised */ in mte_sync_tags()
68 /* ensure the tags are visible before the PTE is set */ in mte_sync_tags()
87 * pages is tagged, __set_ptes() may zero or change the tags of the in memcmp_pages()
433 * Access MTE tags in another process' address space as given in mm. Update
434 * the number of tags copied. Return 0 if any tags copied, error otherwise.
453 unsigned long tags, offset; in __access_remote_tags() local
465 * Only copy tags if the page has been mapped as PROT_MTE in __access_remote_tags()
466 * (PG_mte_tagged set). Otherwise the tags are not valid and in __access_remote_tags()
468 * would cause the existing tags to be cleared if the page in __access_remote_tags()
[all …]
|
| /linux/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ |
| H A D | nv20.c | 47 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv20_fb_tile_comp() local
48 if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { in nv20_fb_tile_comp()
66 nvkm_mm_free(&fb->tags.mm, &tile->tag); in nv20_fb_tile_fini()
83 const u32 tags = nvkm_rd32(fb->subdev.device, 0x100320); in nv20_fb_tags() local
84 return tags ? tags + 1 : 0; in nv20_fb_tags()
89 .tags = nv20_fb_tags,
|
| H A D | nv35.c | 34 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv35_fb_tile_comp() local
35 if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { in nv35_fb_tile_comp()
39 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 13; in nv35_fb_tile_comp()
48 .tags = nv20_fb_tags,
|
| H A D | nv36.c | 34 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv36_fb_tile_comp() local
35 if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { in nv36_fb_tile_comp()
39 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 14; in nv36_fb_tile_comp()
48 .tags = nv20_fb_tags,
|
| H A D | nv40.c | 34 u32 tags = round_up(tiles / fb->ram->parts, 0x100); in nv40_fb_tile_comp() local
36 !nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { in nv40_fb_tile_comp()
39 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 8) << 13; in nv40_fb_tile_comp()
54 .tags = nv20_fb_tags,
|
| H A D | base.c | 109 u32 tags = 0; in nvkm_fb_oneinit() local
129 if (fb->func->tags) { in nvkm_fb_oneinit()
130 tags = fb->func->tags(fb); in nvkm_fb_oneinit()
131 nvkm_debug(subdev, "%d comptags\n", tags); in nvkm_fb_oneinit()
134 return nvkm_mm_init(&fb->tags.mm, 0, 0, tags, 1); in nvkm_fb_oneinit()
243 nvkm_mm_fini(&fb->tags.mm); in nvkm_fb_dtor()
244 mutex_destroy(&fb->tags.mutex); in nvkm_fb_dtor()
279 mutex_init(&fb->tags.mutex); in nvkm_fb_ctor()
|
| H A D | nv25.c | 34 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv25_fb_tile_comp() local
35 if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { in nv25_fb_tile_comp()
47 .tags = nv20_fb_tags,
|
| H A D | nv30.c | 53 u32 tags = round_up(tiles / fb->ram->parts, 0x40); in nv30_fb_tile_comp() local
54 if (!nvkm_mm_head(&fb->tags.mm, 0, 1, tags, tags, 1, &tile->tag)) { in nv30_fb_tile_comp()
58 tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 12; in nv30_fb_tile_comp()
119 .tags = nv20_fb_tags,
|
| /linux/Documentation/admin-guide/device-mapper/ |
| H A D | dm-integrity.rst | 6 per-sector tags that can be used for storing integrity information.
8 A general problem with storing integrity tags with every sector is that
13 writes sector data and integrity tags into a journal, commits the journal
14 and then copies the data and integrity tags to their respective location.
30 region's data and integrity tags are not synchronized - if the machine
41 Accesses to the on-disk metadata area containing checksums (aka tags) are
77 not used and data sectors and integrity tags are written
81 data and integrity tags are written to the
136 integrity tags from the upper target, but it will automatically
137 generate and verify the integrity tags.
[all …]
|
| /linux/tools/perf/ |
| H A D | Makefile | 70 # (Except for tags and TAGS targets. The reason is that the
71 # Makefile does not treat tags/TAGS as targets but as files
74 all tags TAGS: target
121 .PHONY: tags TAGS FORCE Makefile
|
| /linux/include/linux/ |
| H A D | radix-tree.h | 76 /* The top bits of xa_flags are used to store the root tags */
96 * @tags: bit-mask for tag-iterating
109 unsigned long tags; member
123 * - any function _modifying_ the tree or tags (inserting or deleting
124 * items, setting or clearing tags) must exclude other modifications, and
126 * - any function _reading_ the tree or tags (looking up items or tags,
155 * if only the RCU read lock is held. Functions to set/clear tags and to
284 * Leave iter->tags uninitialized. radix_tree_next_chunk() will fill it in radix_tree_iter_init()
286 * unsuccessful or non-tagged then nobody cares about ->tags. in radix_tree_iter_init()
307 * its end (next_index), and constructs a bit mask for tagged iterating (tags).
[all …]
|
| /linux/drivers/gpu/drm/nouveau/nvkm/subdev/volt/ |
| H A D | gpio.c | 30 static const u8 tags[] = { variable
42 for (i = 0; i < ARRAY_SIZE(tags); i++) { in nvkm_voltgpio_get()
44 int ret = nvkm_gpio_get(gpio, 0, tags[i], 0xff); in nvkm_voltgpio_get()
60 for (i = 0; i < ARRAY_SIZE(tags); i++, vid >>= 1) { in nvkm_voltgpio_set()
62 int ret = nvkm_gpio_set(gpio, 0, tags[i], 0xff, vid & 1); in nvkm_voltgpio_set()
85 for (i = 0; i < ARRAY_SIZE(tags); i++) { in nvkm_voltgpio_init()
87 int ret = nvkm_gpio_find(gpio, 0, tags[i], 0xff, &func); in nvkm_voltgpio_init()
|
| /linux/drivers/i2c/busses/ |
| H A D | i2c-qup.c | 98 /* QUP tags */
106 /* QUP v2 tags */
145 * Max tags length (start, stop and maximum 2 bytes address) for each QUP
149 /* Max data length for each DATARD tags */
180 * cur_tx_tags: pointer to tell cur position in tags
187 * tags: contains tx tag bytes for current QUP transfer
212 u8 tags[6]; member
284 /* function to write tags in tx fifo for i2c read transfer */
547 static int qup_i2c_set_tags_smb(u16 addr, u8 *tags, struct qup_i2c_dev *qup, in qup_i2c_set_tags_smb() argument
553 tags[len++] = QUP_TAG_V2_DATARD_STOP; in qup_i2c_set_tags_smb()
[all …]
|
| /linux/lib/ |
| H A D | alloc_tag.c | 126 size_t alloc_tag_top_users(struct codetag_bytes *tags, size_t count, bool can_sleep) in alloc_tag_top_users() argument
149 if (n.bytes > tags[i].bytes) in alloc_tag_top_users()
154 memmove(&tags[i + 1], in alloc_tag_top_users()
155 &tags[i], in alloc_tag_top_users()
156 sizeof(tags[0]) * (nr - i)); in alloc_tag_top_users()
158 tags[i] = n; in alloc_tag_top_users()
223 /* swap tags */ in pgalloc_tag_swap()
262 /* Check if kernel tags fit into page flags */ in alloc_tag_sec_init()
265 …pr_err("%lu allocation tags cannot be references using %d available page flag bits. Memory allocat… in alloc_tag_sec_init()
290 /* No alignment requirements when we are not indexing the tags */ in alloc_tag_align()
[all …]
|
| /linux/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/ |
| H A D | gf100.c | 163 /* No VRAM, no tags for now. */ in gf100_ltc_oneinit_tag_ram()
169 /* tags for 1/4 of VRAM should be enough (8192/4 per GiB of VRAM) */ in gf100_ltc_oneinit_tag_ram()
178 /* 4 part 4 sub: 0x2000 bytes for 56 tags */ in gf100_ltc_oneinit_tag_ram()
179 /* 3 part 4 sub: 0x6000 bytes for 168 tags */ in gf100_ltc_oneinit_tag_ram()
182 * 0x4980 bytes for 64 tags, and round up to 0x6000 bytes for 64 tags. in gf100_ltc_oneinit_tag_ram()
184 * For 4 GiB of memory we'll have 8192 tags which makes 3 MiB, < 0.1 %. in gf100_ltc_oneinit_tag_ram()
203 nvkm_mm_fini(&fb->tags.mm); in gf100_ltc_oneinit_tag_ram()
204 return nvkm_mm_init(&fb->tags.mm, 0, 0, ltc->num_tags, 1); in gf100_ltc_oneinit_tag_ram()
|
| /linux/tools/tracing/rtla/ |
| H A D | Makefile.rtla | 52 .PHONY: tags
53 tags:
56 .PHONY: TAGS
57 TAGS:
62 $(RM) tags TAGS
|
| /linux/tools/testing/selftests/arm64/mte/ |
| H A D | mte_common_util.c | 169 bool tags, int fd) in __mte_allocate_memory_range() argument
207 if (tags) in __mte_allocate_memory_range()
219 void *mte_allocate_memory(size_t size, int mem_type, int mapping, bool tags) in mte_allocate_memory() argument
221 return __mte_allocate_memory_range(size, mem_type, mapping, 0, 0, tags, -1); in mte_allocate_memory()
224 void *mte_allocate_file_memory(size_t size, int mem_type, int mapping, bool tags, int fd) in mte_allocate_file_memory() argument
246 return __mte_allocate_memory_range(size, mem_type, mapping, 0, 0, tags, fd); in mte_allocate_file_memory()
277 size_t range_before, size_t range_after, bool tags) in __mte_free_memory_range() argument
285 if (tags) in __mte_free_memory_range()
301 void mte_free_memory(void *ptr, size_t size, int mem_type, bool tags) in mte_free_memory() argument
303 __mte_free_memory_range(ptr, size, mem_type, 0, 0, tags); in mte_free_memory()
|
| H A D | mte_common_util.h | 48 void *mte_allocate_memory(size_t size, int mem_type, int mapping, bool tags);
52 bool tags, int fd);
55 void mte_free_memory(void *ptr, size_t size, int mem_type, bool tags);
101 int mem_type, bool tags) in check_allocated_memory() argument
108 if (tags && !MT_FETCH_TAG((uintptr_t)ptr)) { in check_allocated_memory()
|
| /linux/arch/arm64/include/asm/ |
| H A D | mte.h | 37 /* track which pages have valid allocation tags */
47 * Ensure that the tags written prior to this function are visible in set_page_mte_tagged()
62 * read of the tags. in page_mte_tagged()
89 * The tags are either being initialised or may have been initialised in try_page_mte_tagging()
172 * Ensure that the tags written prior to this function are visible in folio_set_hugetlb_mte_tagged()
188 * read of the tags. in folio_test_hugetlb_mte_tagged()
203 * The tags are either being initialised or may have been initialised in folio_try_hugetlb_mte_tagging()
|