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igt/gem_userptr_blits: Verify that userptr bo work on unshared memory

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If the parent passes a userptr to some private memory, we expect to
still be able to use the userptr in the child.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2014-07-11 10:38:32 +01:00
parent 9344aa78e8
commit 9b6ae3cb6f
1 changed files with 52 additions and 0 deletions
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52
tests/gem_userptr_blits.c
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@ -542,6 +542,55 @@ static int test_invalid_mapping(int fd)
return 0;
}
static void test_forked_access(int fd)
{
uint32_t handle1, handle2;
void *ptr1, *ptr2;
int ret;
ret = posix_memalign(&ptr1, PAGE_SIZE, PAGE_SIZE);
igt_assert(ret == 0);
ret = madvise(ptr1, PAGE_SIZE, MADV_DONTFORK);
igt_assert(ret == 0);
ret = gem_userptr(fd, ptr1, PAGE_SIZE, 0, &handle1);
igt_assert(ret == 0);
ret = posix_memalign(&ptr2, PAGE_SIZE, PAGE_SIZE);
igt_assert(ret == 0);
ret = madvise(ptr2, PAGE_SIZE, MADV_DONTFORK);
igt_assert(ret == 0);
ret = gem_userptr(fd, ptr2, PAGE_SIZE, 0, &handle2);
igt_assert(ret == 0);
memset(ptr1, 0x1, PAGE_SIZE);
memset(ptr2, 0x2, PAGE_SIZE);
igt_fork(child, 1) {
copy(fd, handle1, handle2, 0);
}
igt_waitchildren();
gem_userptr_sync(fd, handle1);
gem_userptr_sync(fd, handle2);
gem_close(fd, handle1);
gem_close(fd, handle2);
igt_assert(memcmp(ptr1, ptr2, PAGE_SIZE) == 0);
ret = madvise(ptr1, PAGE_SIZE, MADV_DOFORK);
igt_assert(ret == 0);
free(ptr1);
ret = madvise(ptr2, PAGE_SIZE, MADV_DOFORK);
igt_assert(ret == 0);
free(ptr2);
}
static int test_forbidden_ops(int fd)
{
void *ptr;
@ -1108,6 +1157,9 @@ int main(int argc, char **argv)
igt_subtest("invalid-mapping")
test_invalid_mapping(fd);
igt_subtest("forked-access")
test_forked_access(fd);
igt_subtest("forbidden-operations")
test_forbidden_ops(fd);