diff options
| -rw-r--r-- | tools/testing/selftests/mm/.gitignore | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/mm/Makefile | 3 | ||||
| -rwxr-xr-x | tools/testing/selftests/mm/run_vmtests.sh | 12 | ||||
| -rw-r--r-- | tools/testing/selftests/mm/virtual_address_range.c | 260 |
4 files changed, 0 insertions, 276 deletions
diff --git a/tools/testing/selftests/mm/.gitignore b/tools/testing/selftests/mm/.gitignore index c2a8586e51a1..702e5723c35d 100644 --- a/tools/testing/selftests/mm/.gitignore +++ b/tools/testing/selftests/mm/.gitignore @@ -32,7 +32,6 @@ uffd-unit-tests uffd-wp-mremap mlock-intersect-test mlock-random-test -virtual_address_range gup_test va_128TBswitch map_fixed_noreplace diff --git a/tools/testing/selftests/mm/Makefile b/tools/testing/selftests/mm/Makefile index de4afc34e3b1..2fdb05e5a56a 100644 --- a/tools/testing/selftests/mm/Makefile +++ b/tools/testing/selftests/mm/Makefile @@ -136,9 +136,6 @@ endif ifneq (,$(filter $(ARCH),arm64 mips64 parisc64 powerpc riscv64 s390x sparc64 x86_64 s390)) TEST_GEN_FILES += va_high_addr_switch -ifneq ($(ARCH),riscv64) -TEST_GEN_FILES += virtual_address_range -endif TEST_GEN_FILES += write_to_hugetlbfs endif diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 2dadbfc6e535..452875db532c 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -399,18 +399,6 @@ CATEGORY="hugetlb" run_test ./hugetlb-read-hwpoison fi if [ $VADDR64 -ne 0 ]; then - - # set overcommit_policy as OVERCOMMIT_ALWAYS so that kernel - # allows high virtual address allocation requests independent - # of platform's physical memory. - - if [ -x ./virtual_address_range ]; then - prev_policy=$(cat /proc/sys/vm/overcommit_memory) - echo 1 > /proc/sys/vm/overcommit_memory - CATEGORY="hugevm" run_test ./virtual_address_range - echo $prev_policy > /proc/sys/vm/overcommit_memory - fi - # va high address boundary switch test CATEGORY="hugevm" run_test bash ./va_high_addr_switch.sh fi # VADDR64 diff --git a/tools/testing/selftests/mm/virtual_address_range.c b/tools/testing/selftests/mm/virtual_address_range.c deleted file mode 100644 index 4f0923825ed7..000000000000 --- a/tools/testing/selftests/mm/virtual_address_range.c +++ /dev/null @@ -1,260 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright 2017, Anshuman Khandual, IBM Corp. - * - * Works on architectures which support 128TB virtual - * address range and beyond. - */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> -#include <sys/prctl.h> -#include <sys/mman.h> -#include <sys/time.h> -#include <fcntl.h> - -#include "vm_util.h" -#include "kselftest.h" - -/* - * Maximum address range mapped with a single mmap() - * call is little bit more than 1GB. Hence 1GB is - * chosen as the single chunk size for address space - * mapping. - */ - -#define SZ_1GB (1024 * 1024 * 1024UL) -#define SZ_1TB (1024 * 1024 * 1024 * 1024UL) - -#define MAP_CHUNK_SIZE SZ_1GB - -/* - * Address space till 128TB is mapped without any hint - * and is enabled by default. Address space beyond 128TB - * till 512TB is obtained by passing hint address as the - * first argument into mmap() system call. - * - * The process heap address space is divided into two - * different areas one below 128TB and one above 128TB - * till it reaches 512TB. One with size 128TB and the - * other being 384TB. - * - * On Arm64 the address space is 256TB and support for - * high mappings up to 4PB virtual address space has - * been added. - * - * On PowerPC64, the address space up to 128TB can be - * mapped without a hint. Addresses beyond 128TB, up to - * 4PB, can be mapped with a hint. - * - */ - -#define NR_CHUNKS_128TB ((128 * SZ_1TB) / MAP_CHUNK_SIZE) /* Number of chunks for 128TB */ -#define NR_CHUNKS_256TB (NR_CHUNKS_128TB * 2UL) -#define NR_CHUNKS_384TB (NR_CHUNKS_128TB * 3UL) -#define NR_CHUNKS_3840TB (NR_CHUNKS_128TB * 30UL) -#define NR_CHUNKS_3968TB (NR_CHUNKS_128TB * 31UL) - -#define ADDR_MARK_128TB (1UL << 47) /* First address beyond 128TB */ -#define ADDR_MARK_256TB (1UL << 48) /* First address beyond 256TB */ - -#ifdef __aarch64__ -#define HIGH_ADDR_MARK ADDR_MARK_256TB -#define HIGH_ADDR_SHIFT 49 -#define NR_CHUNKS_LOW NR_CHUNKS_256TB -#define NR_CHUNKS_HIGH NR_CHUNKS_3840TB -#elif defined(__PPC64__) -#define HIGH_ADDR_MARK ADDR_MARK_128TB -#define HIGH_ADDR_SHIFT 48 -#define NR_CHUNKS_LOW NR_CHUNKS_128TB -#define NR_CHUNKS_HIGH NR_CHUNKS_3968TB -#else -#define HIGH_ADDR_MARK ADDR_MARK_128TB -#define HIGH_ADDR_SHIFT 48 -#define NR_CHUNKS_LOW NR_CHUNKS_128TB -#define NR_CHUNKS_HIGH NR_CHUNKS_384TB -#endif - -static char *hint_addr(void) -{ - int bits = HIGH_ADDR_SHIFT + rand() % (63 - HIGH_ADDR_SHIFT); - - return (char *) (1UL << bits); -} - -static void validate_addr(char *ptr, int high_addr) -{ - unsigned long addr = (unsigned long) ptr; - - if (high_addr) { - if (addr < HIGH_ADDR_MARK) - ksft_exit_fail_msg("Bad address %lx\n", addr); - return; - } - - if (addr > HIGH_ADDR_MARK) - ksft_exit_fail_msg("Bad address %lx\n", addr); -} - -static void mark_range(char *ptr, size_t size) -{ - if (prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, ptr, size, "virtual_address_range") == -1) { - if (errno == EINVAL) { - /* Depends on CONFIG_ANON_VMA_NAME */ - ksft_test_result_skip("prctl(PR_SET_VMA_ANON_NAME) not supported\n"); - ksft_finished(); - } else { - ksft_exit_fail_perror("prctl(PR_SET_VMA_ANON_NAME) failed\n"); - } - } -} - -static int is_marked_vma(const char *vma_name) -{ - return vma_name && !strcmp(vma_name, "[anon:virtual_address_range]\n"); -} - -static int validate_lower_address_hint(void) -{ - char *ptr; - - ptr = mmap((void *) (1UL << 45), MAP_CHUNK_SIZE, PROT_READ | - PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - - if (ptr == MAP_FAILED) - return 0; - - return 1; -} - -static int validate_complete_va_space(void) -{ - unsigned long start_addr, end_addr, prev_end_addr; - char line[400]; - char prot[6]; - FILE *file; - int fd; - - fd = open("va_dump", O_CREAT | O_WRONLY, 0600); - unlink("va_dump"); - if (fd < 0) { - ksft_test_result_skip("cannot create or open dump file\n"); - ksft_finished(); - } - - file = fopen("/proc/self/maps", "r"); - if (file == NULL) - ksft_exit_fail_msg("cannot open /proc/self/maps\n"); - - prev_end_addr = 0; - while (fgets(line, sizeof(line), file)) { - const char *vma_name = NULL; - int vma_name_start = 0; - unsigned long hop; - - if (sscanf(line, "%lx-%lx %4s %*s %*s %*s %n", - &start_addr, &end_addr, prot, &vma_name_start) != 3) - ksft_exit_fail_msg("cannot parse /proc/self/maps\n"); - - if (vma_name_start) - vma_name = line + vma_name_start; - - /* end of userspace mappings; ignore vsyscall mapping */ - if (start_addr & (1UL << 63)) - return 0; - - /* /proc/self/maps must have gaps less than MAP_CHUNK_SIZE */ - if (start_addr - prev_end_addr >= MAP_CHUNK_SIZE) - return 1; - - prev_end_addr = end_addr; - - if (prot[0] != 'r') - continue; - - if (check_vmflag_io((void *)start_addr)) - continue; - - /* - * Confirm whether MAP_CHUNK_SIZE chunk can be found or not. - * If write succeeds, no need to check MAP_CHUNK_SIZE - 1 - * addresses after that. If the address was not held by this - * process, write would fail with errno set to EFAULT. - * Anyways, if write returns anything apart from 1, exit the - * program since that would mean a bug in /proc/self/maps. - */ - hop = 0; - while (start_addr + hop < end_addr) { - if (write(fd, (void *)(start_addr + hop), 1) != 1) - return 1; - lseek(fd, 0, SEEK_SET); - - if (is_marked_vma(vma_name)) - munmap((char *)(start_addr + hop), MAP_CHUNK_SIZE); - - hop += MAP_CHUNK_SIZE; - } - } - return 0; -} - -int main(int argc, char *argv[]) -{ - char *ptr[NR_CHUNKS_LOW]; - char **hptr; - char *hint; - unsigned long i, lchunks, hchunks; - - ksft_print_header(); - ksft_set_plan(1); - - for (i = 0; i < NR_CHUNKS_LOW; i++) { - ptr[i] = mmap(NULL, MAP_CHUNK_SIZE, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - - if (ptr[i] == MAP_FAILED) { - if (validate_lower_address_hint()) - ksft_exit_fail_msg("mmap unexpectedly succeeded with hint\n"); - break; - } - - mark_range(ptr[i], MAP_CHUNK_SIZE); - validate_addr(ptr[i], 0); - } - lchunks = i; - hptr = (char **) calloc(NR_CHUNKS_HIGH, sizeof(char *)); - if (hptr == NULL) { - ksft_test_result_skip("Memory constraint not fulfilled\n"); - ksft_finished(); - } - - for (i = 0; i < NR_CHUNKS_HIGH; i++) { - hint = hint_addr(); - hptr[i] = mmap(hint, MAP_CHUNK_SIZE, PROT_READ, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - - if (hptr[i] == MAP_FAILED) - break; - - mark_range(hptr[i], MAP_CHUNK_SIZE); - validate_addr(hptr[i], 1); - } - hchunks = i; - if (validate_complete_va_space()) { - ksft_test_result_fail("BUG in mmap() or /proc/self/maps\n"); - ksft_finished(); - } - - for (i = 0; i < lchunks; i++) - munmap(ptr[i], MAP_CHUNK_SIZE); - - for (i = 0; i < hchunks; i++) - munmap(hptr[i], MAP_CHUNK_SIZE); - - free(hptr); - - ksft_test_result_pass("Test\n"); - ksft_finished(); -} |