| /linux-6.3-rc2/tools/testing/selftests/kvm/lib/ |
| A D | userfaultfd_util.c | 31 int uffd = uffd_desc->uffd; in uffd_handler_thread_fn() local
45 pollfd[0].fd = uffd; in uffd_handler_thread_fn()
79 r = read(uffd, &msg, sizeof(msg)); in uffd_handler_thread_fn()
117 int uffd; in uffd_setup_demand_paging() local
155 uffd_desc->uffd = uffd; in uffd_setup_demand_paging()
172 ret = write(uffd->pipefds[1], &c, 1); in uffd_stop_demand_paging()
175 ret = pthread_join(uffd->thread, NULL); in uffd_stop_demand_paging()
178 close(uffd->uffd); in uffd_stop_demand_paging()
180 close(uffd->pipefds[1]); in uffd_stop_demand_paging()
181 close(uffd->pipefds[0]); in uffd_stop_demand_paging()
[all …]
|
| /linux-6.3-rc2/tools/testing/selftests/bpf/prog_tests/ |
| A D | bpf_mod_race.c | 91 int uffd; in test_setup_uffd() local
94 if (uffd < 0) in test_setup_uffd()
100 close(uffd); in test_setup_uffd()
108 close(uffd); in test_setup_uffd()
111 return uffd; in test_setup_uffd()
121 int uffd, ret; in test_bpf_mod_race_config() local
180 close(uffd); in test_bpf_mod_race_config()
181 uffd = -1; in test_bpf_mod_race_config()
192 close(uffd); in test_bpf_mod_race_config()
193 uffd = -1; in test_bpf_mod_race_config()
[all …]
|
| /linux-6.3-rc2/tools/testing/selftests/powerpc/tm/ |
| A D | tm-signal-pagefault.c | 86 long uffd; /* userfaultfd file descriptor */ in fault_handler_thread() local
91 uffd = (long) arg; in fault_handler_thread()
94 pollfd.fd = uffd; in fault_handler_thread()
101 nread = read(uffd, &msg, sizeof(msg)); in fault_handler_thread()
130 if (ioctl(uffd, UFFDIO_COPY, &uffdio_copy) == -1) { in fault_handler_thread()
139 long uffd; /* userfaultfd file descriptor */ in setup_uf_mem() local
148 uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK); in setup_uf_mem()
149 if (uffd == -1) { in setup_uf_mem()
155 if (ioctl(uffd, UFFDIO_API, &uffdio_api) == -1) { in setup_uf_mem()
180 if (ioctl(uffd, UFFDIO_REGISTER, &uffdio_register) == -1) { in setup_uf_mem()
[all …]
|
| /linux-6.3-rc2/tools/testing/selftests/mm/ |
| A D | userfaultfd.c | 99 static int uffd = -1; variable
443 if (uffd < 0) in userfaultfd_open()
487 if (uffd != -1) { in uffd_test_ctx_clear()
488 if (close(uffd)) in uffd_test_ctx_clear()
490 uffd = -1; in uffd_test_ctx_clear()
803 pollfd[0].fd = uffd; in uffd_poll_thread()
832 close(uffd); in uffd_poll_thread()
834 pollfd[0].fd = uffd; in uffd_poll_thread()
1043 wp_range(uffd, in faulting_process()
1757 close(uffd); in parse_test_type_arg()
[all …]
|
| A D | ksm_functional_tests.c | 185 int uffd; in test_unmerge_uffd_wp() local
194 uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK); in test_unmerge_uffd_wp()
195 if (uffd < 0) { in test_unmerge_uffd_wp()
203 if (ioctl(uffd, UFFDIO_API, &uffdio_api) < 0) { in test_unmerge_uffd_wp()
216 if (ioctl(uffd, UFFDIO_REGISTER, &uffdio_register) < 0) { in test_unmerge_uffd_wp()
225 if (ioctl(uffd, UFFDIO_WRITEPROTECT, &uffd_writeprotect)) { in test_unmerge_uffd_wp()
238 close(uffd); in test_unmerge_uffd_wp()
|
| A D | hugepage-mremap.c | 61 long uffd; /* userfaultfd file descriptor */ in register_region_with_uffd() local
67 uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK); in register_region_with_uffd()
68 if (uffd == -1) { in register_region_with_uffd()
75 if (ioctl(uffd, UFFDIO_API, &uffdio_api) == -1) { in register_region_with_uffd()
103 if (ioctl(uffd, UFFDIO_REGISTER, &uffdio_register) == -1) { in register_region_with_uffd()
|
| /linux-6.3-rc2/tools/testing/selftests/kvm/include/ |
| A D | userfaultfd_util.h | 18 typedef int (*uffd_handler_t)(int uffd_mode, int uffd, struct uffd_msg *msg);
22 int uffd; member
33 void uffd_stop_demand_paging(struct uffd_desc *uffd);
|
| /linux-6.3-rc2/tools/testing/selftests/kvm/ |
| A D | demand_paging_test.c | 60 static int handle_uffd_page_request(int uffd_mode, int uffd, in handle_uffd_page_request() argument
79 r = ioctl(uffd, UFFDIO_COPY, ©); in handle_uffd_page_request()
91 r = ioctl(uffd, UFFDIO_CONTINUE, &cont); in handle_uffd_page_request()
|
| /linux-6.3-rc2/tools/testing/selftests/kvm/aarch64/ |
| A D | page_fault_test.c | 311 static int uffd_generic_handler(int uffd_mode, int uffd, struct uffd_msg *msg, in uffd_generic_handler() argument
331 ret = ioctl(uffd, UFFDIO_COPY, ©); in uffd_generic_handler()
344 static int uffd_pt_handler(int mode, int uffd, struct uffd_msg *msg) in uffd_pt_handler() argument
346 return uffd_generic_handler(mode, uffd, msg, &pt_args); in uffd_pt_handler()
349 static int uffd_data_handler(int mode, int uffd, struct uffd_msg *msg) in uffd_data_handler() argument
351 return uffd_generic_handler(mode, uffd, msg, &data_args); in uffd_data_handler()
401 static int uffd_no_handler(int mode, int uffd, struct uffd_msg *msg) in uffd_no_handler() argument
791 .name = SCAT4(uffd, _access, _with_af, #_mark_cmd), \
|
| /linux-6.3-rc2/Documentation/admin-guide/mm/ |
| A D | userfaultfd.rst | 184 uffd. You can supply as many pages as you want with these IOCTLs.
200 ``ioctl(uffd, UFFDIO_WRITEPROTECT, struct *uffdio_writeprotect)``
205 Then, in the thread reading from uffd the struct will have
207 ``ioctl(uffd, UFFDIO_WRITEPROTECT, struct *uffdio_writeprotect)``
210 allows you to do the bookkeeping about the write in the uffd reading
|
| A D | pagemap.rst | 22 * Bit 57 pte is uffd-wp write-protected (since 5.13) (see
|