From 235266b8e11c9db12497bdfc6d5e9100f3434c24 Mon Sep 17 00:00:00 2001 From: Aneesh Kumar K.V Date: Wed, 31 Jan 2018 16:16:59 -0800 Subject: selftests/vm: move 128TB mmap boundary test to generic directory Architectures like PPC64 support mmap hint address based large address space selection. This test can be run on those architectures too. Move the test from the x86 selftests to selftest/vm so that other architectures can use it too. We also add a few new test scenarios in this patch. We do test a few boundary conditions before we do a high address mmap. PPC64 uses the address limit to validate the address in the fault path. We had bugs in this area w.r.t SLB fault handling before we updated the addess limit. We also touch the allocated space to make sure we don't have any bugs in the fault handling path. [akpm@linux-foundation.org: restore tools/testing/selftests/vm/Makefile alpha ordering] Link: http://lkml.kernel.org/r/20171123165226.32582-1-aneesh.kumar@linux.vnet.ibm.com Signed-off-by: Aneesh Kumar K.V Cc: "Kirill A . Shutemov" Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Shuah Khan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- tools/testing/selftests/x86/5lvl.c | 177 ------------------------------------- 1 file changed, 177 deletions(-) delete mode 100644 tools/testing/selftests/x86/5lvl.c (limited to 'tools/testing/selftests/x86') diff --git a/tools/testing/selftests/x86/5lvl.c b/tools/testing/selftests/x86/5lvl.c deleted file mode 100644 index 2eafdcd4c2b3..000000000000 --- a/tools/testing/selftests/x86/5lvl.c +++ /dev/null @@ -1,177 +0,0 @@ -#include -#include - -#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) - -#define PAGE_SIZE 4096 -#define LOW_ADDR ((void *) (1UL << 30)) -#define HIGH_ADDR ((void *) (1UL << 50)) - -struct testcase { - void *addr; - unsigned long size; - unsigned long flags; - const char *msg; - unsigned int low_addr_required:1; - unsigned int keep_mapped:1; -}; - -static struct testcase testcases[] = { - { - .addr = NULL, - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(NULL)", - .low_addr_required = 1, - }, - { - .addr = LOW_ADDR, - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(LOW_ADDR)", - .low_addr_required = 1, - }, - { - .addr = HIGH_ADDR, - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(HIGH_ADDR)", - .keep_mapped = 1, - }, - { - .addr = HIGH_ADDR, - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(HIGH_ADDR) again", - .keep_mapped = 1, - }, - { - .addr = HIGH_ADDR, - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, - .msg = "mmap(HIGH_ADDR, MAP_FIXED)", - }, - { - .addr = (void*) -1, - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(-1)", - .keep_mapped = 1, - }, - { - .addr = (void*) -1, - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(-1) again", - }, - { - .addr = (void *)((1UL << 47) - PAGE_SIZE), - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap((1UL << 47), 2 * PAGE_SIZE)", - .low_addr_required = 1, - .keep_mapped = 1, - }, - { - .addr = (void *)((1UL << 47) - PAGE_SIZE / 2), - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap((1UL << 47), 2 * PAGE_SIZE / 2)", - .low_addr_required = 1, - .keep_mapped = 1, - }, - { - .addr = (void *)((1UL << 47) - PAGE_SIZE), - .size = 2 * PAGE_SIZE, - .flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, - .msg = "mmap((1UL << 47) - PAGE_SIZE, 2 * PAGE_SIZE, MAP_FIXED)", - }, - { - .addr = NULL, - .size = 2UL << 20, - .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(NULL, MAP_HUGETLB)", - .low_addr_required = 1, - }, - { - .addr = LOW_ADDR, - .size = 2UL << 20, - .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(LOW_ADDR, MAP_HUGETLB)", - .low_addr_required = 1, - }, - { - .addr = HIGH_ADDR, - .size = 2UL << 20, - .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(HIGH_ADDR, MAP_HUGETLB)", - .keep_mapped = 1, - }, - { - .addr = HIGH_ADDR, - .size = 2UL << 20, - .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(HIGH_ADDR, MAP_HUGETLB) again", - .keep_mapped = 1, - }, - { - .addr = HIGH_ADDR, - .size = 2UL << 20, - .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, - .msg = "mmap(HIGH_ADDR, MAP_FIXED | MAP_HUGETLB)", - }, - { - .addr = (void*) -1, - .size = 2UL << 20, - .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(-1, MAP_HUGETLB)", - .keep_mapped = 1, - }, - { - .addr = (void*) -1, - .size = 2UL << 20, - .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap(-1, MAP_HUGETLB) again", - }, - { - .addr = (void *)((1UL << 47) - PAGE_SIZE), - .size = 4UL << 20, - .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS, - .msg = "mmap((1UL << 47), 4UL << 20, MAP_HUGETLB)", - .low_addr_required = 1, - .keep_mapped = 1, - }, - { - .addr = (void *)((1UL << 47) - (2UL << 20)), - .size = 4UL << 20, - .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, - .msg = "mmap((1UL << 47) - (2UL << 20), 4UL << 20, MAP_FIXED | MAP_HUGETLB)", - }, -}; - -int main(int argc, char **argv) -{ - int i; - void *p; - - for (i = 0; i < ARRAY_SIZE(testcases); i++) { - struct testcase *t = testcases + i; - - p = mmap(t->addr, t->size, PROT_NONE, t->flags, -1, 0); - - printf("%s: %p - ", t->msg, p); - - if (p == MAP_FAILED) { - printf("FAILED\n"); - continue; - } - - if (t->low_addr_required && p >= (void *)(1UL << 47)) - printf("FAILED\n"); - else - printf("OK\n"); - if (!t->keep_mapped) - munmap(p, t->size); - } - return 0; -} -- cgit v1.2.3-55-g7522