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Diffstat (limited to 'tools/testing/selftests/kvm/lib/kvm_util.c')
-rw-r--r--tools/testing/selftests/kvm/lib/kvm_util.c170
1 files changed, 120 insertions, 50 deletions
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index a6dd0401eb50..8a3523d4434f 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -92,7 +92,7 @@ static void vm_open(struct kvm_vm *vm, int perm)
exit(KSFT_SKIP);
if (!kvm_check_cap(KVM_CAP_IMMEDIATE_EXIT)) {
- fprintf(stderr, "immediate_exit not available, skipping test\n");
+ print_skip("immediate_exit not available");
exit(KSFT_SKIP);
}
@@ -113,6 +113,25 @@ const char * const vm_guest_mode_string[] = {
_Static_assert(sizeof(vm_guest_mode_string)/sizeof(char *) == NUM_VM_MODES,
"Missing new mode strings?");
+struct vm_guest_mode_params {
+ unsigned int pa_bits;
+ unsigned int va_bits;
+ unsigned int page_size;
+ unsigned int page_shift;
+};
+
+static const struct vm_guest_mode_params vm_guest_mode_params[] = {
+ { 52, 48, 0x1000, 12 },
+ { 52, 48, 0x10000, 16 },
+ { 48, 48, 0x1000, 12 },
+ { 48, 48, 0x10000, 16 },
+ { 40, 48, 0x1000, 12 },
+ { 40, 48, 0x10000, 16 },
+ { 0, 0, 0x1000, 12 },
+};
+_Static_assert(sizeof(vm_guest_mode_params)/sizeof(struct vm_guest_mode_params) == NUM_VM_MODES,
+ "Missing new mode params?");
+
/*
* VM Create
*
@@ -136,7 +155,8 @@ struct kvm_vm *_vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm)
{
struct kvm_vm *vm;
- DEBUG("Testing guest mode: %s\n", vm_guest_mode_string(mode));
+ pr_debug("%s: mode='%s' pages='%ld' perm='%d'\n", __func__,
+ vm_guest_mode_string(mode), phy_pages, perm);
vm = calloc(1, sizeof(*vm));
TEST_ASSERT(vm != NULL, "Insufficient Memory");
@@ -144,67 +164,45 @@ struct kvm_vm *_vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm)
vm->mode = mode;
vm->type = 0;
+ vm->pa_bits = vm_guest_mode_params[mode].pa_bits;
+ vm->va_bits = vm_guest_mode_params[mode].va_bits;
+ vm->page_size = vm_guest_mode_params[mode].page_size;
+ vm->page_shift = vm_guest_mode_params[mode].page_shift;
+
/* Setup mode specific traits. */
switch (vm->mode) {
case VM_MODE_P52V48_4K:
vm->pgtable_levels = 4;
- vm->pa_bits = 52;
- vm->va_bits = 48;
- vm->page_size = 0x1000;
- vm->page_shift = 12;
break;
case VM_MODE_P52V48_64K:
vm->pgtable_levels = 3;
- vm->pa_bits = 52;
- vm->va_bits = 48;
- vm->page_size = 0x10000;
- vm->page_shift = 16;
break;
case VM_MODE_P48V48_4K:
vm->pgtable_levels = 4;
- vm->pa_bits = 48;
- vm->va_bits = 48;
- vm->page_size = 0x1000;
- vm->page_shift = 12;
break;
case VM_MODE_P48V48_64K:
vm->pgtable_levels = 3;
- vm->pa_bits = 48;
- vm->va_bits = 48;
- vm->page_size = 0x10000;
- vm->page_shift = 16;
break;
case VM_MODE_P40V48_4K:
vm->pgtable_levels = 4;
- vm->pa_bits = 40;
- vm->va_bits = 48;
- vm->page_size = 0x1000;
- vm->page_shift = 12;
break;
case VM_MODE_P40V48_64K:
vm->pgtable_levels = 3;
- vm->pa_bits = 40;
- vm->va_bits = 48;
- vm->page_size = 0x10000;
- vm->page_shift = 16;
break;
case VM_MODE_PXXV48_4K:
#ifdef __x86_64__
kvm_get_cpu_address_width(&vm->pa_bits, &vm->va_bits);
TEST_ASSERT(vm->va_bits == 48, "Linear address width "
"(%d bits) not supported", vm->va_bits);
+ pr_debug("Guest physical address width detected: %d\n",
+ vm->pa_bits);
vm->pgtable_levels = 4;
- vm->page_size = 0x1000;
- vm->page_shift = 12;
- DEBUG("Guest physical address width detected: %d\n",
- vm->pa_bits);
#else
- TEST_ASSERT(false, "VM_MODE_PXXV48_4K not supported on "
- "non-x86 platforms");
+ TEST_FAIL("VM_MODE_PXXV48_4K not supported on non-x86 platforms");
#endif
break;
default:
- TEST_ASSERT(false, "Unknown guest mode, mode: 0x%x", mode);
+ TEST_FAIL("Unknown guest mode, mode: 0x%x", mode);
}
#ifdef __aarch64__
@@ -266,7 +264,7 @@ void kvm_vm_restart(struct kvm_vm *vmp, int perm)
TEST_ASSERT(ret == 0, "KVM_SET_USER_MEMORY_REGION IOCTL failed,\n"
" rc: %i errno: %i\n"
" slot: %u flags: 0x%x\n"
- " guest_phys_addr: 0x%lx size: 0x%lx",
+ " guest_phys_addr: 0x%llx size: 0x%llx",
ret, errno, region->region.slot,
region->region.flags,
region->region.guest_phys_addr,
@@ -281,7 +279,7 @@ void kvm_vm_get_dirty_log(struct kvm_vm *vm, int slot, void *log)
ret = ioctl(vm->fd, KVM_GET_DIRTY_LOG, &args);
TEST_ASSERT(ret == 0, "%s: KVM_GET_DIRTY_LOG failed: %s",
- strerror(-ret));
+ __func__, strerror(-ret));
}
void kvm_vm_clear_dirty_log(struct kvm_vm *vm, int slot, void *log,
@@ -294,7 +292,7 @@ void kvm_vm_clear_dirty_log(struct kvm_vm *vm, int slot, void *log,
ret = ioctl(vm->fd, KVM_CLEAR_DIRTY_LOG, &args);
TEST_ASSERT(ret == 0, "%s: KVM_CLEAR_DIRTY_LOG failed: %s",
- strerror(-ret));
+ __func__, strerror(-ret));
}
/*
@@ -582,6 +580,10 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
size_t huge_page_size = KVM_UTIL_PGS_PER_HUGEPG * vm->page_size;
size_t alignment;
+ TEST_ASSERT(vm_adjust_num_guest_pages(vm->mode, npages) == npages,
+ "Number of guest pages is not compatible with the host. "
+ "Try npages=%d", vm_adjust_num_guest_pages(vm->mode, npages));
+
TEST_ASSERT((guest_paddr % vm->page_size) == 0, "Guest physical "
"address not on a page boundary.\n"
" guest_paddr: 0x%lx vm->page_size: 0x%x",
@@ -600,7 +602,7 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
region = (struct userspace_mem_region *) userspace_mem_region_find(
vm, guest_paddr, (guest_paddr + npages * vm->page_size) - 1);
if (region != NULL)
- TEST_ASSERT(false, "overlapping userspace_mem_region already "
+ TEST_FAIL("overlapping userspace_mem_region already "
"exists\n"
" requested guest_paddr: 0x%lx npages: 0x%lx "
"page_size: 0x%x\n"
@@ -616,7 +618,7 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
break;
}
if (region != NULL)
- TEST_ASSERT(false, "A mem region with the requested slot "
+ TEST_FAIL("A mem region with the requested slot "
"already exists.\n"
" requested slot: %u paddr: 0x%lx npages: 0x%lx\n"
" existing slot: %u paddr: 0x%lx size: 0x%lx",
@@ -720,7 +722,7 @@ memslot2region(struct kvm_vm *vm, uint32_t memslot)
" requested slot: %u\n", memslot);
fputs("---- vm dump ----\n", stderr);
vm_dump(stderr, vm, 2);
- TEST_ASSERT(false, "Mem region not found");
+ TEST_FAIL("Mem region not found");
}
return region;
@@ -757,6 +759,36 @@ void vm_mem_region_set_flags(struct kvm_vm *vm, uint32_t slot, uint32_t flags)
}
/*
+ * VM Memory Region Move
+ *
+ * Input Args:
+ * vm - Virtual Machine
+ * slot - Slot of the memory region to move
+ * new_gpa - Starting guest physical address
+ *
+ * Output Args: None
+ *
+ * Return: None
+ *
+ * Change the gpa of a memory region.
+ */
+void vm_mem_region_move(struct kvm_vm *vm, uint32_t slot, uint64_t new_gpa)
+{
+ struct userspace_mem_region *region;
+ int ret;
+
+ region = memslot2region(vm, slot);
+
+ region->region.guest_phys_addr = new_gpa;
+
+ ret = ioctl(vm->fd, KVM_SET_USER_MEMORY_REGION, &region->region);
+
+ TEST_ASSERT(!ret, "KVM_SET_USER_MEMORY_REGION failed\n"
+ "ret: %i errno: %i slot: %u new_gpa: 0x%lx",
+ ret, errno, slot, new_gpa);
+}
+
+/*
* VCPU mmap Size
*
* Input Args: None
@@ -808,7 +840,7 @@ void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid)
/* Confirm a vcpu with the specified id doesn't already exist. */
vcpu = vcpu_find(vm, vcpuid);
if (vcpu != NULL)
- TEST_ASSERT(false, "vcpu with the specified id "
+ TEST_FAIL("vcpu with the specified id "
"already exists,\n"
" requested vcpuid: %u\n"
" existing vcpuid: %u state: %p",
@@ -901,8 +933,7 @@ static vm_vaddr_t vm_vaddr_unused_gap(struct kvm_vm *vm, size_t sz,
} while (pgidx_start != 0);
no_va_found:
- TEST_ASSERT(false, "No vaddr of specified pages available, "
- "pages: 0x%lx", pages);
+ TEST_FAIL("No vaddr of specified pages available, pages: 0x%lx", pages);
/* NOT REACHED */
return -1;
@@ -982,21 +1013,21 @@ vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min,
* vm - Virtual Machine
* vaddr - Virtuall address to map
* paddr - VM Physical Address
- * size - The size of the range to map
+ * npages - The number of pages to map
* pgd_memslot - Memory region slot for new virtual translation tables
*
* Output Args: None
*
* Return: None
*
- * Within the VM given by vm, creates a virtual translation for the
- * page range starting at vaddr to the page range starting at paddr.
+ * Within the VM given by @vm, creates a virtual translation for
+ * @npages starting at @vaddr to the page range starting at @paddr.
*/
void virt_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr,
- size_t size, uint32_t pgd_memslot)
+ unsigned int npages, uint32_t pgd_memslot)
{
size_t page_size = vm->page_size;
- size_t npages = size / page_size;
+ size_t size = npages * page_size;
TEST_ASSERT(vaddr + size > vaddr, "Vaddr overflow");
TEST_ASSERT(paddr + size > paddr, "Paddr overflow");
@@ -1037,7 +1068,7 @@ void *addr_gpa2hva(struct kvm_vm *vm, vm_paddr_t gpa)
+ (gpa - region->region.guest_phys_addr));
}
- TEST_ASSERT(false, "No vm physical memory at 0x%lx", gpa);
+ TEST_FAIL("No vm physical memory at 0x%lx", gpa);
return NULL;
}
@@ -1071,8 +1102,7 @@ vm_paddr_t addr_hva2gpa(struct kvm_vm *vm, void *hva)
+ (hva - (uintptr_t) region->host_mem));
}
- TEST_ASSERT(false, "No mapping to a guest physical address, "
- "hva: %p", hva);
+ TEST_FAIL("No mapping to a guest physical address, hva: %p", hva);
return -1;
}
@@ -1703,3 +1733,43 @@ unsigned int vm_get_max_gfn(struct kvm_vm *vm)
{
return vm->max_gfn;
}
+
+static unsigned int vm_calc_num_pages(unsigned int num_pages,
+ unsigned int page_shift,
+ unsigned int new_page_shift,
+ bool ceil)
+{
+ unsigned int n = 1 << (new_page_shift - page_shift);
+
+ if (page_shift >= new_page_shift)
+ return num_pages * (1 << (page_shift - new_page_shift));
+
+ return num_pages / n + !!(ceil && num_pages % n);
+}
+
+static inline int getpageshift(void)
+{
+ return __builtin_ffs(getpagesize()) - 1;
+}
+
+unsigned int
+vm_num_host_pages(enum vm_guest_mode mode, unsigned int num_guest_pages)
+{
+ return vm_calc_num_pages(num_guest_pages,
+ vm_guest_mode_params[mode].page_shift,
+ getpageshift(), true);
+}
+
+unsigned int
+vm_num_guest_pages(enum vm_guest_mode mode, unsigned int num_host_pages)
+{
+ return vm_calc_num_pages(num_host_pages, getpageshift(),
+ vm_guest_mode_params[mode].page_shift, false);
+}
+
+unsigned int vm_calc_num_guest_pages(enum vm_guest_mode mode, size_t size)
+{
+ unsigned int n;
+ n = DIV_ROUND_UP(size, vm_guest_mode_params[mode].page_size);
+ return vm_adjust_num_guest_pages(mode, n);
+}