1*6aacab30SLorenzo Stoakes // SPDX-License-Identifier: GPL-2.0-or-later
2*6aacab30SLorenzo Stoakes
test_mmap_region_basic(void)3*6aacab30SLorenzo Stoakes static bool test_mmap_region_basic(void)
4*6aacab30SLorenzo Stoakes {
5*6aacab30SLorenzo Stoakes struct mm_struct mm = {};
6*6aacab30SLorenzo Stoakes unsigned long addr;
7*6aacab30SLorenzo Stoakes struct vm_area_struct *vma;
8*6aacab30SLorenzo Stoakes VMA_ITERATOR(vmi, &mm, 0);
9*6aacab30SLorenzo Stoakes
10*6aacab30SLorenzo Stoakes current->mm = &mm;
11*6aacab30SLorenzo Stoakes
12*6aacab30SLorenzo Stoakes /* Map at 0x300000, length 0x3000. */
13*6aacab30SLorenzo Stoakes addr = __mmap_region(NULL, 0x300000, 0x3000,
14*6aacab30SLorenzo Stoakes VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE,
15*6aacab30SLorenzo Stoakes 0x300, NULL);
16*6aacab30SLorenzo Stoakes ASSERT_EQ(addr, 0x300000);
17*6aacab30SLorenzo Stoakes
18*6aacab30SLorenzo Stoakes /* Map at 0x250000, length 0x3000. */
19*6aacab30SLorenzo Stoakes addr = __mmap_region(NULL, 0x250000, 0x3000,
20*6aacab30SLorenzo Stoakes VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE,
21*6aacab30SLorenzo Stoakes 0x250, NULL);
22*6aacab30SLorenzo Stoakes ASSERT_EQ(addr, 0x250000);
23*6aacab30SLorenzo Stoakes
24*6aacab30SLorenzo Stoakes /* Map at 0x303000, merging to 0x300000 of length 0x6000. */
25*6aacab30SLorenzo Stoakes addr = __mmap_region(NULL, 0x303000, 0x3000,
26*6aacab30SLorenzo Stoakes VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE,
27*6aacab30SLorenzo Stoakes 0x303, NULL);
28*6aacab30SLorenzo Stoakes ASSERT_EQ(addr, 0x303000);
29*6aacab30SLorenzo Stoakes
30*6aacab30SLorenzo Stoakes /* Map at 0x24d000, merging to 0x250000 of length 0x6000. */
31*6aacab30SLorenzo Stoakes addr = __mmap_region(NULL, 0x24d000, 0x3000,
32*6aacab30SLorenzo Stoakes VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE,
33*6aacab30SLorenzo Stoakes 0x24d, NULL);
34*6aacab30SLorenzo Stoakes ASSERT_EQ(addr, 0x24d000);
35*6aacab30SLorenzo Stoakes
36*6aacab30SLorenzo Stoakes ASSERT_EQ(mm.map_count, 2);
37*6aacab30SLorenzo Stoakes
38*6aacab30SLorenzo Stoakes for_each_vma(vmi, vma) {
39*6aacab30SLorenzo Stoakes if (vma->vm_start == 0x300000) {
40*6aacab30SLorenzo Stoakes ASSERT_EQ(vma->vm_end, 0x306000);
41*6aacab30SLorenzo Stoakes ASSERT_EQ(vma->vm_pgoff, 0x300);
42*6aacab30SLorenzo Stoakes } else if (vma->vm_start == 0x24d000) {
43*6aacab30SLorenzo Stoakes ASSERT_EQ(vma->vm_end, 0x253000);
44*6aacab30SLorenzo Stoakes ASSERT_EQ(vma->vm_pgoff, 0x24d);
45*6aacab30SLorenzo Stoakes } else {
46*6aacab30SLorenzo Stoakes ASSERT_FALSE(true);
47*6aacab30SLorenzo Stoakes }
48*6aacab30SLorenzo Stoakes }
49*6aacab30SLorenzo Stoakes
50*6aacab30SLorenzo Stoakes cleanup_mm(&mm, &vmi);
51*6aacab30SLorenzo Stoakes return true;
52*6aacab30SLorenzo Stoakes }
53*6aacab30SLorenzo Stoakes
run_mmap_tests(int * num_tests,int * num_fail)54*6aacab30SLorenzo Stoakes static void run_mmap_tests(int *num_tests, int *num_fail)
55*6aacab30SLorenzo Stoakes {
56*6aacab30SLorenzo Stoakes TEST(mmap_region_basic);
57*6aacab30SLorenzo Stoakes }
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