kvm: selftests: dirty_log_test: reset guest test phys offset

We need to reset the offset for each mode as it will change
depending on the number of guest physical address bits.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c
index 9078b57..44c04f2 100644 (file)
--- a/tools/testing/selftests/kvm/dirty_log_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_test.c
@@ -231,7 +231,7 @@ static struct kvm_vm *create_vm(enum vm_guest_mode mode, uint32_t vcpuid,
 }
 
 static void run_test(enum vm_guest_mode mode, unsigned long iterations,
-                    unsigned long interval)
+                    unsigned long interval, uint64_t phys_offset)
 {
        unsigned int guest_pa_bits, guest_page_shift;
        pthread_t vcpu_thread;
@@ -279,9 +279,11 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
        host_num_pages = (guest_num_pages * guest_page_size) / host_page_size +
                         !!((guest_num_pages * guest_page_size) % host_page_size);
 
-       if (!guest_test_phys_mem) {
+       if (!phys_offset) {
                guest_test_phys_mem = (max_gfn - guest_num_pages) * guest_page_size;
                guest_test_phys_mem &= ~(host_page_size - 1);
+       } else {
+               guest_test_phys_mem = phys_offset;
        }
 
        DEBUG("guest physical test memory offset: 0x%lx\n", guest_test_phys_mem);
@@ -414,6 +416,7 @@ int main(int argc, char *argv[])
        unsigned long iterations = TEST_HOST_LOOP_N;
        unsigned long interval = TEST_HOST_LOOP_INTERVAL;
        bool mode_selected = false;
+       uint64_t phys_offset = 0;
        unsigned int mode;
        int opt, i;
 
@@ -433,7 +436,7 @@ int main(int argc, char *argv[])
                        interval = strtol(optarg, NULL, 10);
                        break;
                case 'p':
-                       guest_test_phys_mem = strtoull(optarg, NULL, 0);
+                       phys_offset = strtoull(optarg, NULL, 0);
                        break;
                case 'm':
                        if (!mode_selected) {
@@ -468,7 +471,7 @@ int main(int argc, char *argv[])
                            "Guest mode ID %d (%s) not supported.",
                            vm_guest_modes[i].mode,
                            vm_guest_mode_string(vm_guest_modes[i].mode));
-               run_test(vm_guest_modes[i].mode, iterations, interval);
+               run_test(vm_guest_modes[i].mode, iterations, interval, phys_offset);
        }
 
        return 0;