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Diffstat (limited to 'tools/testing/selftests/kvm/dirty_log_test.c')
-rw-r--r--tools/testing/selftests/kvm/dirty_log_test.c107
1 files changed, 54 insertions, 53 deletions
diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c
index 5614222a6628..752ec158ac59 100644
--- a/tools/testing/selftests/kvm/dirty_log_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_test.c
@@ -166,24 +166,22 @@ static void *vcpu_worker(void *data)
pages_count += TEST_PAGES_PER_LOOP;
generate_random_array(guest_array, TEST_PAGES_PER_LOOP);
} else {
- TEST_ASSERT(false,
- "Invalid guest sync status: "
- "exit_reason=%s\n",
- exit_reason_str(run->exit_reason));
+ TEST_FAIL("Invalid guest sync status: "
+ "exit_reason=%s\n",
+ exit_reason_str(run->exit_reason));
}
}
- DEBUG("Dirtied %"PRIu64" pages\n", pages_count);
+ pr_info("Dirtied %"PRIu64" pages\n", pages_count);
return NULL;
}
-static void vm_dirty_log_verify(unsigned long *bmap)
+static void vm_dirty_log_verify(enum vm_guest_mode mode, unsigned long *bmap)
{
+ uint64_t step = vm_num_host_pages(mode, 1);
uint64_t page;
uint64_t *value_ptr;
- uint64_t step = host_page_size >= guest_page_size ? 1 :
- guest_page_size / host_page_size;
for (page = 0; page < host_num_pages; page += step) {
value_ptr = host_test_mem + page * host_page_size;
@@ -252,6 +250,8 @@ static struct kvm_vm *create_vm(enum vm_guest_mode mode, uint32_t vcpuid,
struct kvm_vm *vm;
uint64_t extra_pg_pages = extra_mem_pages / 512 * 2;
+ pr_info("Testing guest mode: %s\n", vm_guest_mode_string(mode));
+
vm = _vm_create(mode, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR);
kvm_vm_elf_load(vm, program_invocation_name, 0, 0);
#ifdef __x86_64__
@@ -264,6 +264,10 @@ static struct kvm_vm *create_vm(enum vm_guest_mode mode, uint32_t vcpuid,
#define DIRTY_MEM_BITS 30 /* 1G */
#define PAGE_SHIFT_4K 12
+#ifdef USE_CLEAR_DIRTY_LOG
+static u64 dirty_log_manual_caps;
+#endif
+
static void run_test(enum vm_guest_mode mode, unsigned long iterations,
unsigned long interval, uint64_t phys_offset)
{
@@ -289,14 +293,11 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
* case where the size is not aligned to 64 pages.
*/
guest_num_pages = (1ul << (DIRTY_MEM_BITS -
- vm_get_page_shift(vm))) + 16;
-#ifdef __s390x__
- /* Round up to multiple of 1M (segment size) */
- guest_num_pages = (guest_num_pages + 0xff) & ~0xffUL;
-#endif
+ vm_get_page_shift(vm))) + 3;
+ guest_num_pages = vm_adjust_num_guest_pages(mode, guest_num_pages);
+
host_page_size = getpagesize();
- host_num_pages = (guest_num_pages * guest_page_size) / host_page_size +
- !!((guest_num_pages * guest_page_size) % host_page_size);
+ host_num_pages = vm_num_host_pages(mode, guest_num_pages);
if (!phys_offset) {
guest_test_phys_mem = (vm_get_max_gfn(vm) -
@@ -311,7 +312,7 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
guest_test_phys_mem &= ~((1 << 20) - 1);
#endif
- DEBUG("guest physical test memory offset: 0x%lx\n", guest_test_phys_mem);
+ pr_info("guest physical test memory offset: 0x%lx\n", guest_test_phys_mem);
bmap = bitmap_alloc(host_num_pages);
host_bmap_track = bitmap_alloc(host_num_pages);
@@ -320,7 +321,7 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
struct kvm_enable_cap cap = {};
cap.cap = KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2;
- cap.args[0] = 1;
+ cap.args[0] = dirty_log_manual_caps;
vm_enable_cap(vm, &cap);
#endif
@@ -332,8 +333,7 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
KVM_MEM_LOG_DIRTY_PAGES);
/* Do mapping for the dirty track memory slot */
- virt_map(vm, guest_test_virt_mem, guest_test_phys_mem,
- guest_num_pages * guest_page_size, 0);
+ virt_map(vm, guest_test_virt_mem, guest_test_phys_mem, guest_num_pages, 0);
/* Cache the HVA pointer of the region */
host_test_mem = addr_gpa2hva(vm, (vm_paddr_t)guest_test_phys_mem);
@@ -341,9 +341,7 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
#ifdef __x86_64__
vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid());
#endif
-#ifdef __aarch64__
ucall_init(vm, NULL);
-#endif
/* Export the shared variables to the guest */
sync_global_to_guest(vm, host_page_size);
@@ -369,7 +367,7 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
kvm_vm_clear_dirty_log(vm, TEST_MEM_SLOT_INDEX, bmap, 0,
host_num_pages);
#endif
- vm_dirty_log_verify(bmap);
+ vm_dirty_log_verify(mode, bmap);
iteration++;
sync_global_to_guest(vm, iteration);
}
@@ -378,9 +376,9 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
host_quit = true;
pthread_join(vcpu_thread, NULL);
- DEBUG("Total bits checked: dirty (%"PRIu64"), clear (%"PRIu64"), "
- "track_next (%"PRIu64")\n", host_dirty_count, host_clear_count,
- host_track_next_count);
+ pr_info("Total bits checked: dirty (%"PRIu64"), clear (%"PRIu64"), "
+ "track_next (%"PRIu64")\n", host_dirty_count, host_clear_count,
+ host_track_next_count);
free(bmap);
free(host_bmap_track);
@@ -388,15 +386,14 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
kvm_vm_free(vm);
}
-struct vm_guest_mode_params {
+struct guest_mode {
bool supported;
bool enabled;
};
-struct vm_guest_mode_params vm_guest_mode_params[NUM_VM_MODES];
+static struct guest_mode guest_modes[NUM_VM_MODES];
-#define vm_guest_mode_params_init(mode, supported, enabled) \
-({ \
- vm_guest_mode_params[mode] = (struct vm_guest_mode_params){ supported, enabled }; \
+#define guest_mode_init(mode, supported, enabled) ({ \
+ guest_modes[mode] = (struct guest_mode){ supported, enabled }; \
})
static void help(char *name)
@@ -419,7 +416,7 @@ static void help(char *name)
" Guest mode IDs:\n");
for (i = 0; i < NUM_VM_MODES; ++i) {
printf(" %d: %s%s\n", i, vm_guest_mode_string(i),
- vm_guest_mode_params[i].supported ? " (supported)" : "");
+ guest_modes[i].supported ? " (supported)" : "");
}
puts("");
exit(0);
@@ -433,34 +430,38 @@ int main(int argc, char *argv[])
uint64_t phys_offset = 0;
unsigned int mode;
int opt, i;
-#ifdef __aarch64__
- unsigned int host_ipa_limit;
-#endif
#ifdef USE_CLEAR_DIRTY_LOG
- if (!kvm_check_cap(KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2)) {
- fprintf(stderr, "KVM_CLEAR_DIRTY_LOG not available, skipping tests\n");
+ dirty_log_manual_caps =
+ kvm_check_cap(KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2);
+ if (!dirty_log_manual_caps) {
+ print_skip("KVM_CLEAR_DIRTY_LOG not available");
exit(KSFT_SKIP);
}
+ dirty_log_manual_caps &= (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE |
+ KVM_DIRTY_LOG_INITIALLY_SET);
#endif
#ifdef __x86_64__
- vm_guest_mode_params_init(VM_MODE_PXXV48_4K, true, true);
+ guest_mode_init(VM_MODE_PXXV48_4K, true, true);
#endif
#ifdef __aarch64__
- vm_guest_mode_params_init(VM_MODE_P40V48_4K, true, true);
- vm_guest_mode_params_init(VM_MODE_P40V48_64K, true, true);
-
- host_ipa_limit = kvm_check_cap(KVM_CAP_ARM_VM_IPA_SIZE);
- if (host_ipa_limit >= 52)
- vm_guest_mode_params_init(VM_MODE_P52V48_64K, true, true);
- if (host_ipa_limit >= 48) {
- vm_guest_mode_params_init(VM_MODE_P48V48_4K, true, true);
- vm_guest_mode_params_init(VM_MODE_P48V48_64K, true, true);
+ guest_mode_init(VM_MODE_P40V48_4K, true, true);
+ guest_mode_init(VM_MODE_P40V48_64K, true, true);
+
+ {
+ unsigned int limit = kvm_check_cap(KVM_CAP_ARM_VM_IPA_SIZE);
+
+ if (limit >= 52)
+ guest_mode_init(VM_MODE_P52V48_64K, true, true);
+ if (limit >= 48) {
+ guest_mode_init(VM_MODE_P48V48_4K, true, true);
+ guest_mode_init(VM_MODE_P48V48_64K, true, true);
+ }
}
#endif
#ifdef __s390x__
- vm_guest_mode_params_init(VM_MODE_P40V48_4K, true, true);
+ guest_mode_init(VM_MODE_P40V48_4K, true, true);
#endif
while ((opt = getopt(argc, argv, "hi:I:p:m:")) != -1) {
@@ -477,13 +478,13 @@ int main(int argc, char *argv[])
case 'm':
if (!mode_selected) {
for (i = 0; i < NUM_VM_MODES; ++i)
- vm_guest_mode_params[i].enabled = false;
+ guest_modes[i].enabled = false;
mode_selected = true;
}
mode = strtoul(optarg, NULL, 10);
TEST_ASSERT(mode < NUM_VM_MODES,
"Guest mode ID %d too big", mode);
- vm_guest_mode_params[mode].enabled = true;
+ guest_modes[mode].enabled = true;
break;
case 'h':
default:
@@ -495,15 +496,15 @@ int main(int argc, char *argv[])
TEST_ASSERT(iterations > 2, "Iterations must be greater than two");
TEST_ASSERT(interval > 0, "Interval must be greater than zero");
- DEBUG("Test iterations: %"PRIu64", interval: %"PRIu64" (ms)\n",
- iterations, interval);
+ pr_info("Test iterations: %"PRIu64", interval: %"PRIu64" (ms)\n",
+ iterations, interval);
srandom(time(0));
for (i = 0; i < NUM_VM_MODES; ++i) {
- if (!vm_guest_mode_params[i].enabled)
+ if (!guest_modes[i].enabled)
continue;
- TEST_ASSERT(vm_guest_mode_params[i].supported,
+ TEST_ASSERT(guest_modes[i].supported,
"Guest mode ID %d (%s) not supported.",
i, vm_guest_mode_string(i));
run_test(i, iterations, interval, phys_offset);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.