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/linux/tools/testing/selftests/mm/
H A Dguard-regions.c50 unsigned long page_size; in FIXTURE() local
214 static void set_pattern(char *ptr, size_t num_pages, size_t page_size) in set_pattern() argument
219 char *ptr2 = &ptr[i * page_size]; in set_pattern()
221 memset(ptr2, 'a' + (i % 26), page_size); in set_pattern()
229 static bool check_pattern_offset(char *ptr, size_t num_pages, size_t page_size, in check_pattern_offset() argument
234 for (i = 0; i < num_pages * page_size; i++) { in check_pattern_offset()
235 size_t offset = pgoff * page_size + i; in check_pattern_offset()
237 char expected = 'a' + ((offset / page_size) % 26); in check_pattern_offset()
247 static bool check_pattern(char *ptr, size_t num_pages, size_t page_size) in check_pattern() argument
249 return check_pattern_offset(ptr, num_pages, page_size, 0); in check_pattern()
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H A Dmseal_test.c205 unsigned long page_size = getpagesize(); in seal_support() local
207 ptr = mmap(NULL, page_size, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); in seal_support()
211 ret = sys_mseal(ptr, page_size); in seal_support()
233 unsigned long page_size = getpagesize(); in test_seal_addseal() local
234 unsigned long size = 4 * page_size; in test_seal_addseal()
249 unsigned long page_size = getpagesize(); in test_seal_unmapped_start() local
250 unsigned long size = 4 * page_size; in test_seal_unmapped_start()
256 ret = sys_munmap(ptr, 2 * page_size); in test_seal_unmapped_start()
267 ret = sys_mseal(ptr + 2 * page_size, 2 * page_size); in test_seal_unmapped_start()
277 unsigned long page_size = getpagesize(); in test_seal_unmapped_middle() local
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H A Dmerge.c20 unsigned int page_size; in FIXTURE() local
25 static char *map_carveout(unsigned int page_size) in map_carveout() argument
27 return mmap(NULL, 30 * page_size, PROT_NONE, in map_carveout()
66 self->page_size = psize(); in FIXTURE_SETUP()
68 self->carveout = map_carveout(self->page_size); in FIXTURE_SETUP()
76 ASSERT_EQ(munmap(self->carveout, 30 * self->page_size), 0); in FIXTURE_TEARDOWN()
88 unsigned int page_size; in FIXTURE() local
110 self->page_size = psize(); in FIXTURE_SETUP()
111 self->carveout = map_carveout(self->page_size); in FIXTURE_SETUP()
118 ASSERT_EQ(munmap(self->carveout, 30 * self->page_size), 0); in FIXTURE_TEARDOWN()
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H A Dmremap_dontunmap.c19 unsigned long page_size; variable
46 void *source_mapping = mmap(NULL, num_pages * page_size, PROT_NONE, in kernel_support_for_mremap_dontunmap()
53 mremap(source_mapping, num_pages * page_size, num_pages * page_size, in kernel_support_for_mremap_dontunmap()
58 BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1, in kernel_support_for_mremap_dontunmap()
62 BUG_ON(munmap(source_mapping, num_pages * page_size) == -1, in kernel_support_for_mremap_dontunmap()
71 BUG_ON(size & (page_size - 1), in check_region_contains_byte()
73 BUG_ON((unsigned long)addr & (page_size - 1), in check_region_contains_byte()
76 memset(page_buffer, byte, page_size); in check_region_contains_byte()
78 unsigned long num_pages = size / page_size; in check_region_contains_byte()
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H A Dmlock2-tests.c183 unsigned long page_size = getpagesize(); in test_mlock_lock()
185 map = mmap(NULL, 2 * page_size, PROT_READ | PROT_WRITE, in test_mlock_lock()
190 if (mlock2_(map, 2 * page_size, 0)) { in test_mlock_lock()
191 munmap(map, 2 * page_size); in test_mlock_lock()
198 if (munlock(map, 2 * page_size)) { in test_mlock_lock()
199 munmap(map, 2 * page_size); in test_mlock_lock()
204 munmap(map, 2 * page_size); in onfault_check()
220 unsigned long page_size = getpagesize(); in unlock_onfault_check()
223 is_vma_lock_on_fault((unsigned long)map + page_size)) { in unlock_onfault_check()
234 unsigned long page_size in test_mlock_onfault()
179 unsigned long page_size = getpagesize(); test_mlock_lock() local
216 unsigned long page_size = getpagesize(); unlock_onfault_check() local
230 unsigned long page_size = getpagesize(); test_mlock_onfault() local
257 unsigned long page_size = getpagesize(); test_lock_onfault_of_present() local
280 unsigned long page_size = getpagesize(); test_munlockall0() local
306 unsigned long page_size = getpagesize(); test_munlockall1() local
346 unsigned long page_size = getpagesize(); test_vma_management() local
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H A Dmap_fixed_noreplace.c44 unsigned long flags, addr, size, page_size; in main() local
50 page_size = sysconf(_SC_PAGE_SIZE); in main()
53 size = 5 * page_size; in main()
60 size = 5 * page_size; in main()
66 if (munmap((void *)addr, 5 * page_size) != 0) { in main()
71 ksft_test_result_pass("mmap() 5*PAGE_SIZE at base\n"); in main()
73 addr = base_addr + page_size; in main()
74 size = 3 * page_size; in main()
81 ksft_test_result_pass("mmap() 3*PAGE_SIZE at base+PAGE_SIZE\n"); in main()
92 size = 5 * page_size; in main()
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H A Dmremap_test.c64 #define PTE page_size
232 static void mremap_expand_merge(FILE *maps_fp, unsigned long page_size) in get_source_mapping()
238 start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, in get_source_mapping()
246 munmap(start + page_size, page_size);
247 remap = mremap(start, page_size, 2 * page_size, 0);
250 munmap(start, page_size);
251 munmap(start + 2 * page_size, page_size);
253 mremap_expand_merge(FILE * maps_fp,unsigned long page_size) mremap_expand_merge() argument
292 mremap_expand_merge_offset(FILE * maps_fp,unsigned long page_size) mremap_expand_merge_offset() argument
398 is_multiple_vma_range_ok(unsigned int pattern_seed,char * ptr,unsigned long page_size) is_multiple_vma_range_ok() argument
423 mremap_move_multiple_vmas(unsigned int pattern_seed,unsigned long page_size,bool dont_unmap) mremap_move_multiple_vmas() argument
548 mremap_shrink_multiple_vmas(unsigned long page_size,bool inplace) mremap_shrink_multiple_vmas() argument
628 mremap_move_multiple_vmas_split(unsigned int pattern_seed,unsigned long page_size,bool dont_unmap) mremap_move_multiple_vmas_split() argument
752 mremap_move_multi_invalid_vmas(FILE * maps_fp,unsigned long page_size) mremap_move_multi_invalid_vmas() argument
985 mremap_move_multi_invalid_vmas(FILE * maps_fp,unsigned long page_size) mremap_move_multi_invalid_vmas() argument
1338 int page_size; main() local
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H A Dksm_tests.c321 long page_count, int timeout, size_t page_size) in check_ksm_merge() argument
332 map_ptr = allocate_memory(NULL, prot, mapping, '*', page_size * page_count); in check_ksm_merge()
336 if (ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout)) in check_ksm_merge()
341 munmap(map_ptr, page_size * page_count); in check_ksm_merge()
348 munmap(map_ptr, page_size * page_count); in check_ksm_merge()
352 static int check_ksm_unmerge(int merge_type, int mapping, int prot, int timeout, size_t page_size) in check_ksm_merge()
364 map_ptr = allocate_memory(NULL, prot, mapping, '*', page_size * page_count); in check_ksm_unmerge()
368 if (ksm_merge_pages(merge_type, map_ptr, page_size * page_count, start_time, timeout)) in check_ksm_unmerge()
373 memset(map_ptr + page_size, '+', 1); in check_ksm_unmerge()
381 munmap(map_ptr, page_size * page_coun in check_ksm_unmerge()
354 check_ksm_unmerge(int merge_type,int mapping,int prot,int timeout,size_t page_size) check_ksm_unmerge() argument
395 check_ksm_zero_page_merge(int merge_type,int mapping,int prot,long page_count,int timeout,bool use_zero_pages,size_t page_size) check_ksm_zero_page_merge() argument
460 check_ksm_numa_merge(int merge_type,int mapping,int prot,int timeout,bool merge_across_nodes,size_t page_size) check_ksm_numa_merge() argument
684 ksm_cow_time(int merge_type,int mapping,int prot,int timeout,size_t page_size) ksm_cow_time() argument
762 size_t page_size = sysconf(_SC_PAGESIZE); main() local
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H A Dpagemap_ioctl.c41 size_t page_size; variable
45 #define LEN(region) ((region.end - region.start)/page_size)
194 mem_size = num_pages * page_size; in userfaultfd_tests()
214 vec_size = mem_size/page_size; in userfaultfd_tests()
253 mem_size = num_pages * page_size; in sanity_tests_sd()
326 for (i = 0; i < mem_size; i += 2 * page_size) in sanity_tests_sd()
334 ksft_test_result((unsigned long long)ret == mem_size/(page_size * 2), in sanity_tests_sd()
360 for (i = 0; i < mem_size; i += 2 * page_size) in sanity_tests_sd()
362 mem[(mem_size/page_size - 1) * page_size]++; in sanity_tests_sd()
381 vec_size = mem_size/page_size; in sanity_tests_sd()
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/linux/tools/testing/selftests/lsm/
H A Dlsm_get_self_attr_test.c29 const long page_size = sysconf(_SC_PAGESIZE); in TEST() local
30 struct lsm_ctx *ctx = calloc(page_size, 1); in TEST()
42 const long page_size = sysconf(_SC_PAGESIZE); in TEST() local
43 __u32 size = page_size; in TEST()
58 const long page_size = sysconf(_SC_PAGESIZE); in TEST() local
59 struct lsm_ctx *ctx = calloc(page_size, 1); in TEST()
77 const long page_size = sysconf(_SC_PAGESIZE); in TEST() local
78 struct lsm_ctx *ctx = calloc(page_size, 1); in TEST()
79 __u64 *syscall_lsms = calloc(page_size, 1); in TEST()
86 size = page_size; in TEST()
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H A Dlsm_list_modules_test.c20 const long page_size = sysconf(_SC_PAGESIZE); in TEST() local
21 __u64 *syscall_lsms = calloc(page_size, 1); in TEST()
33 const long page_size = sysconf(_SC_PAGESIZE); in TEST() local
34 __u32 size = page_size; in TEST()
44 const long page_size = sysconf(_SC_PAGESIZE); in TEST() local
45 __u64 *syscall_lsms = calloc(page_size, 1); in TEST()
59 const long page_size = sysconf(_SC_PAGESIZE); in TEST() local
60 __u64 *syscall_lsms = calloc(page_size, 1); in TEST()
61 __u32 size = page_size; in TEST()
67 ASSERT_EQ(page_size, size); in TEST()
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/linux/tools/testing/selftests/mincore/
H A Dmincore_selftest.c33 int page_size; in TEST() local
37 page_size = sysconf(_SC_PAGESIZE); in TEST()
45 retval = mincore(NULL, page_size, vec); in TEST()
50 addr = mmap(NULL, page_size, PROT_READ | PROT_WRITE, in TEST()
58 retval = mincore(addr + 1, page_size, vec); in TEST()
70 retval = mincore(addr, page_size, NULL); in TEST()
73 munmap(addr, page_size); in TEST()
88 int page_size; in TEST() local
90 page_size = sysconf(_SC_PAGESIZE); in TEST()
94 addr = mmap(NULL, page_size, PROT_REA in TEST()
144 int page_size; TEST() local
193 int page_size; TEST() local
294 int page_size; TEST() local
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/linux/tools/testing/scatterlist/
H A Dmain.c25 ((1 + array[i]) * PAGE_SIZE); in set_pages()
56 { -EINVAL, 1, pfn(0), NULL, PAGE_SIZE, 0, 1 }, in main()
57 { 0, 1, pfn(0), NULL, PAGE_SIZE, PAGE_SIZE + 1, 1 }, in main()
58 { 0, 1, pfn(0), NULL, PAGE_SIZE, sgmax, 1 }, in main()
60 { 0, 2, pfn(0, 1), NULL, 2 * PAGE_SIZE, sgmax, 1 }, in main()
61 { 0, 2, pfn(1, 0), NULL, 2 * PAGE_SIZE, sgmax, 2 }, in main()
62 { 0, 3, pfn(0, 1, 2), NULL, 3 * PAGE_SIZE, sgmax, 1 }, in main()
63 { 0, 3, pfn(0, 1, 2), NULL, 3 * PAGE_SIZE, sgmax, 1 }, in main()
64 { 0, 3, pfn(0, 1, 2), pfn(3, 4, 5), 3 * PAGE_SIZE, sgmax, 1 }, in main()
65 { 0, 3, pfn(0, 1, 2), pfn(4, 5, 6), 3 * PAGE_SIZE, sgmax, 2 }, in main()
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/linux/tools/testing/selftests/kvm/
H A Dguest_memfd_test.c26 static size_t page_size; variable
64 page_size); in test_mmap_supported()
67 for (i = 0; i < page_size; i++) in test_mmap_supported()
72 memset(mem, val, page_size); in test_mmap_supported()
94 kvm_mbind(mem, page_size * 2, MPOL_INTERLEAVE, &nodemask_0, maxnode, 0); in test_mbind()
101 kvm_mbind(mem + page_size * 2, page_size * 2, MPOL_BIND, &nodemask_0, maxnode, 0); in test_mbind()
102 kvm_get_mempolicy(&policy, &nodemask, maxnode, mem + page_size * 2, MPOL_F_ADDR); in test_mbind()
115 ret = mbind(mem, page_size, 999, &nodemask_0, maxnode, 0); in test_mbind()
138 pages[i] = (char *)mem + page_size * in test_numa_allocation()
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/linux/drivers/pci/endpoint/
H A Dpci-epc-mem.c20 * Reimplement get_order() for mem->page_size since the generic get_order
21 * always gets order with a constant PAGE_SIZE.
26 unsigned int page_shift = ilog2(mem->window.page_size); in pci_epc_mem_get_order()
54 size_t page_size; in pci_epc_multi_mem_init() local
70 page_size = windows[i].page_size; in pci_epc_multi_mem_init()
71 if (page_size < PAGE_SIZE) in pci_epc_multi_mem_init()
72 page_size = PAGE_SIZE; in pci_epc_multi_mem_init()
73 page_shift = ilog2(page_size); in pci_epc_multi_mem_init()
94 mem->window.page_size = page_size; in pci_epc_multi_mem_init()
123 * @page_size: Page size of the window region
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/linux/drivers/target/iscsi/
H A Discsi_target_stat.c53 return snprintf(page, PAGE_SIZE, "%u\n", in iscsi_stat_instance_inst_show()
60 return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_DRAFT20_VERSION); in iscsi_stat_instance_min_ver_show()
66 return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_DRAFT20_VERSION); in iscsi_stat_instance_max_ver_show()
72 return snprintf(page, PAGE_SIZE, "%u\n", in iscsi_stat_instance_portals_show()
79 return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_INST_NUM_NODES); in iscsi_stat_instance_nodes_show()
85 return snprintf(page, PAGE_SIZE, "%u\n", in iscsi_stat_instance_sessions_show()
102 return snprintf(page, PAGE_SIZE, "%u\n", sess_err_count); in iscsi_stat_instance_fail_sess_show()
111 return snprintf(page, PAGE_SIZE, "%u\n", in iscsi_stat_instance_fail_type_show()
121 return snprintf(page, PAGE_SIZE, "%s\n", in iscsi_stat_instance_fail_rem_name_show()
129 return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_DISCONTINUITY_TIME); in iscsi_stat_instance_disc_time_show()
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/linux/drivers/infiniband/sw/rxe/
H A Drxe_mr.c62 mr->ibmr.page_size = PAGE_SIZE; in rxe_mr_init()
78 * PAGE_SIZE, but MRs can have different page sizes. This function
81 * 1. mr->page_size > PAGE_SIZE:
82 * The MR's iova may not be aligned to mr->page_size. We use the
84 * which PAGE_SIZE sub-page the iova falls into.
86 * 2. mr->page_size <= PAGE_SIZE:
94 if (mr_page_size(mr) > PAGE_SIZE) in rxe_mr_iova_to_index()
107 * For mr_page_size > PAGE_SIZE, the offset is within the system page.
108 * For mr_page_size <= PAGE_SIZE, the offset is within the MR page size.
112 if (mr_page_size(mr) > PAGE_SIZE) in rxe_mr_iova_to_page_offset()
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/linux/tools/testing/selftests/bpf/prog_tests/
H A Dmmap.c12 long page_size = sysconf(_SC_PAGE_SIZE); in roundup_page() local
13 return (sz + page_size - 1) / page_size * page_size; in roundup_page()
21 const long page_size = sysconf(_SC_PAGE_SIZE); in test_mmap() local
36 err = bpf_map__set_max_entries(skel->maps.rdonly_map, page_size); in test_mmap()
42 4 * (page_size / sizeof(u64))); in test_mmap()
55 tmp1 = mmap(NULL, page_size, PROT_READ | PROT_WRITE, MAP_SHARED, rdmap_fd, 0); in test_mmap()
57 munmap(tmp1, page_size); in test_mmap()
61 tmp1 = mmap(NULL, page_size, PROT_READ, MAP_SHARED, rdmap_fd, 0); in test_mmap()
200 tmp0 = mmap(NULL, 4 * page_size, PROT_READ, MAP_SHARED | MAP_ANONYMOUS, in test_mmap()
206 tmp1 = mmap(tmp0, 3 * page_size, PROT_READ, MAP_SHARED | MAP_FIXED, in test_mmap()
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H A Dringbuf.c93 int page_size = getpagesize(); in ringbuf_write_subtest()
109 mmap_ptr = mmap(NULL, page_size, PROT_READ | PROT_WRITE, MAP_SHARED, rb_fd, 0); in ringbuf_write_subtest()
113 ASSERT_OK(munmap(mmap_ptr, page_size), "unmap_rw"); in ringbuf_write_subtest()
148 int page_size = getpagesize(); in ringbuf_subtest()
158 skel->maps.ringbuf.max_entries = page_size; in ringbuf_subtest()
166 mmap_ptr = mmap(NULL, page_size, PROT_READ | PROT_WRITE, MAP_SHARED, rb_fd, 0); in ringbuf_subtest()
168 tmp_ptr = mremap(mmap_ptr, page_size, 2 * page_size, MREMAP_MAYMOVE); in ringbuf_subtest()
171 ASSERT_ERR(mprotect(mmap_ptr, page_size, PROT_EXEC), "exec_cons_pos_protect"); in ringbuf_subtest()
172 ASSERT_OK(munmap(mmap_ptr, page_size), "unmap_r in ringbuf_subtest()
92 int page_size = getpagesize(); ringbuf_write_subtest() local
147 int page_size = getpagesize(); ringbuf_subtest() local
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/linux/drivers/target/
H A Dtarget_core_stat.c52 return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index); in target_stat_inst_show()
57 return snprintf(page, PAGE_SIZE, "%u\n", to_stat_dev(item)->dev_index); in target_stat_indx_show()
62 return snprintf(page, PAGE_SIZE, "Target\n"); in target_stat_role_show()
67 return snprintf(page, PAGE_SIZE, "%u\n", to_stat_dev(item)->export_count); in target_stat_ports_show()
102 return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index); in target_stat_tgt_inst_show()
107 return snprintf(page, PAGE_SIZE, "%u\n", to_stat_tgt_dev(item)->dev_index); in target_stat_tgt_indx_show()
113 return snprintf(page, PAGE_SIZE, "%u\n", LU_COUNT); in target_stat_tgt_num_lus_show()
120 return snprintf(page, PAGE_SIZE, "activated\n"); in target_stat_tgt_status_show()
122 return snprintf(page, PAGE_SIZE, "deactivated\n"); in target_stat_tgt_status_show()
135 return snprintf(page, PAGE_SIZE, "%u\n", non_accessible_lus); in target_stat_tgt_non_access_lus_show()
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/linux/tools/testing/selftests/iommu/
H A Diommufd.c40 PAGE_SIZE = sysconf(_SC_PAGE_SIZE); in setup_sizes()
43 BUFFER_SIZE = PAGE_SIZE * 16; in setup_sizes()
301 test_ioctl_ioas_map(buffer, PAGE_SIZE, &iova); in TEST_F()
303 test_ioctl_ioas_unmap(iova, PAGE_SIZE); in TEST_F()
306 test_ioctl_ioas_map_file(mfd, 0, PAGE_SIZE, &iova); in TEST_F()
312 int nlock = PAGE_SIZE / 1024; in TEST_F()
559 /* Negative test: entry_len is bounded by PAGE_SIZE */ in TEST_F()
563 PAGE_SIZE + 1, &num_inv); in TEST_F()
747 test_ioctl_ioas_map_fixed(buffer, PAGE_SIZE, self->base_iova); in TEST_F()
761 test_ioctl_ioas_map_fixed(buffer, PAGE_SIZE, in TEST_F()
2085 unsigned long page_size; FIXTURE() local
2296 uint32_t page_size = MOCK_PAGE_SIZE; TEST_F() local
2338 uint32_t page_size = MOCK_PAGE_SIZE; TEST_F() local
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/linux/arch/csky/kernel/
H A Dvmlinux.lds.S27 . = ALIGN(PAGE_SIZE);
45 . = ALIGN(PAGE_SIZE);
47 INIT_TEXT_SECTION(PAGE_SIZE)
48 INIT_DATA_SECTION(PAGE_SIZE)
50 . = ALIGN(PAGE_SIZE);
54 RO_DATA(PAGE_SIZE)
55 RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
60 . = ALIGN(PAGE_SIZE);
80 #define ITCM_SIZE CONFIG_ITCM_NR_PAGES * PAGE_SIZE
101 . = ALIGN(PAGE_SIZE);
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/linux/tools/testing/selftests/kvm/lib/s390/
H A Dprocessor.c17 TEST_ASSERT(vm->page_size == PAGE_SIZE, "Unsupported page size: 0x%x", in virt_arch_pgd_alloc()
18 vm->page_size); in virt_arch_pgd_alloc()
26 memset(addr_gpa2hva(vm, gpa), 0xff, PAGES_PER_REGION * vm->page_size); in virt_arch_pgd_alloc()
43 memset(addr_gpa2hva(vm, taddr), 0xff, PAGES_PER_REGION * vm->page_size); in virt_alloc_region()
55 TEST_ASSERT((gva % vm->page_size) == 0, in virt_arch_pg_map()
57 " gva: 0x%lx vm->page_size: 0x%x", in virt_arch_pg_map()
58 gva, vm->page_size); in virt_arch_pg_map()
61 TEST_ASSERT((gpa % vm->page_size) == 0, in virt_arch_pg_map()
63 " gpa: 0x%lx vm->page_size: 0x%x", in virt_arch_pg_map()
64 gva, vm->page_size); in virt_arch_pg_map()
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/linux/tools/testing/vsock/
H A Dvsock_test_zerocopy.c27 #ifndef PAGE_SIZE
28 #define PAGE_SIZE 4096 macro
62 { NULL, PAGE_SIZE },
63 { NULL, PAGE_SIZE },
74 { NULL, PAGE_SIZE },
75 { NULL, PAGE_SIZE * 2 },
76 { NULL, PAGE_SIZE * 3 }
88 { NULL, PAGE_SIZE * 16 },
89 { NULL, PAGE_SIZE * 16 },
90 { NULL, PAGE_SIZE * 16 }
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/linux/tools/testing/selftests/bpf/progs/
H A Dcgroup_getset_retval_setsockopt.c14 __s32 page_size = 0; variable
22 /* optval larger than PAGE_SIZE use kernel's buffer. */ in get_retval()
23 if (ctx->optlen > page_size) in get_retval()
37 /* optval larger than PAGE_SIZE use kernel's buffer. */ in set_eunatch()
38 if (ctx->optlen > page_size) in set_eunatch()
52 /* optval larger than PAGE_SIZE use kernel's buffer. */ in set_eisconn()
53 if (ctx->optlen > page_size) in set_eisconn()
64 /* optval larger than PAGE_SIZE use kernel's buffer. */ in legacy_eperm()
65 if (ctx->optlen > page_size) in legacy_eperm()

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