*/
void perf_test_guest_code(uint32_t vcpu_idx)
{
- struct perf_test_args *pta = &perf_test_args;
- struct perf_test_vcpu_args *vcpu_args = &pta->vcpu_args[vcpu_idx];
+ struct perf_test_args *args = &perf_test_args;
+ struct perf_test_vcpu_args *vcpu_args = &args->vcpu_args[vcpu_idx];
struct guest_random_state rand_state;
uint64_t gva;
uint64_t pages;
uint64_t page;
int i;
- rand_state = new_guest_random_state(pta->random_seed + vcpu_idx);
+ rand_state = new_guest_random_state(args->random_seed + vcpu_idx);
gva = vcpu_args->gva;
pages = vcpu_args->pages;
while (true) {
for (i = 0; i < pages; i++) {
- if (pta->random_access)
+ if (args->random_access)
page = guest_random_u32(&rand_state) % pages;
else
page = i;
- addr = gva + (page * pta->guest_page_size);
+ addr = gva + (page * args->guest_page_size);
- if (guest_random_u32(&rand_state) % 100 < pta->write_percent)
+ if (guest_random_u32(&rand_state) % 100 < args->write_percent)
*(uint64_t *)addr = 0x0123456789ABCDEF;
else
READ_ONCE(*(uint64_t *)addr);
uint64_t vcpu_memory_bytes,
bool partition_vcpu_memory_access)
{
- struct perf_test_args *pta = &perf_test_args;
+ struct perf_test_args *args = &perf_test_args;
struct perf_test_vcpu_args *vcpu_args;
int i;
for (i = 0; i < nr_vcpus; i++) {
- vcpu_args = &pta->vcpu_args[i];
+ vcpu_args = &args->vcpu_args[i];
vcpu_args->vcpu = vcpus[i];
vcpu_args->vcpu_idx = i;
vcpu_args->gva = guest_test_virt_mem +
(i * vcpu_memory_bytes);
vcpu_args->pages = vcpu_memory_bytes /
- pta->guest_page_size;
- vcpu_args->gpa = pta->gpa + (i * vcpu_memory_bytes);
+ args->guest_page_size;
+ vcpu_args->gpa = args->gpa + (i * vcpu_memory_bytes);
} else {
vcpu_args->gva = guest_test_virt_mem;
vcpu_args->pages = (nr_vcpus * vcpu_memory_bytes) /
- pta->guest_page_size;
- vcpu_args->gpa = pta->gpa;
+ args->guest_page_size;
+ vcpu_args->gpa = args->gpa;
}
vcpu_args_set(vcpus[i], 1, i);
pr_debug("Added VCPU %d with test mem gpa [%lx, %lx)\n",
i, vcpu_args->gpa, vcpu_args->gpa +
- (vcpu_args->pages * pta->guest_page_size));
+ (vcpu_args->pages * args->guest_page_size));
}
}
enum vm_mem_backing_src_type backing_src,
bool partition_vcpu_memory_access)
{
- struct perf_test_args *pta = &perf_test_args;
+ struct perf_test_args *args = &perf_test_args;
struct kvm_vm *vm;
uint64_t guest_num_pages, slot0_pages = 0;
uint64_t backing_src_pagesz = get_backing_src_pagesz(backing_src);
pr_info("Testing guest mode: %s\n", vm_guest_mode_string(mode));
/* By default vCPUs will write to memory. */
- pta->write_percent = 100;
+ args->write_percent = 100;
/*
* Snapshot the non-huge page size. This is used by the guest code to
* access/dirty pages at the logging granularity.
*/
- pta->guest_page_size = vm_guest_mode_params[mode].page_size;
+ args->guest_page_size = vm_guest_mode_params[mode].page_size;
guest_num_pages = vm_adjust_num_guest_pages(mode,
- (nr_vcpus * vcpu_memory_bytes) / pta->guest_page_size);
+ (nr_vcpus * vcpu_memory_bytes) / args->guest_page_size);
TEST_ASSERT(vcpu_memory_bytes % getpagesize() == 0,
"Guest memory size is not host page size aligned.");
- TEST_ASSERT(vcpu_memory_bytes % pta->guest_page_size == 0,
+ TEST_ASSERT(vcpu_memory_bytes % args->guest_page_size == 0,
"Guest memory size is not guest page size aligned.");
TEST_ASSERT(guest_num_pages % slots == 0,
"Guest memory cannot be evenly divided into %d slots.",
* If using nested, allocate extra pages for the nested page tables and
* in-memory data structures.
*/
- if (pta->nested)
+ if (args->nested)
slot0_pages += perf_test_nested_pages(nr_vcpus);
/*
vm = __vm_create_with_vcpus(mode, nr_vcpus, slot0_pages + guest_num_pages,
perf_test_guest_code, vcpus);
- pta->vm = vm;
+ args->vm = vm;
/* Put the test region at the top guest physical memory. */
region_end_gfn = vm->max_gfn + 1;
* When running vCPUs in L2, restrict the test region to 48 bits to
* avoid needing 5-level page tables to identity map L2.
*/
- if (pta->nested)
- region_end_gfn = min(region_end_gfn, (1UL << 48) / pta->guest_page_size);
+ if (args->nested)
+ region_end_gfn = min(region_end_gfn, (1UL << 48) / args->guest_page_size);
#endif
/*
* If there should be more memory in the guest test region than there
" nr_vcpus: %d wss: %" PRIx64 "]\n",
guest_num_pages, region_end_gfn - 1, nr_vcpus, vcpu_memory_bytes);
- pta->gpa = (region_end_gfn - guest_num_pages - 1) * pta->guest_page_size;
- pta->gpa = align_down(pta->gpa, backing_src_pagesz);
+ args->gpa = (region_end_gfn - guest_num_pages - 1) * args->guest_page_size;
+ args->gpa = align_down(args->gpa, backing_src_pagesz);
#ifdef __s390x__
/* Align to 1M (segment size) */
- pta->gpa = align_down(pta->gpa, 1 << 20);
+ args->gpa = align_down(args->gpa, 1 << 20);
#endif
- pta->size = guest_num_pages * pta->guest_page_size;
+ args->size = guest_num_pages * args->guest_page_size;
pr_info("guest physical test memory: [0x%lx, 0x%lx)\n",
- pta->gpa, pta->gpa + pta->size);
+ args->gpa, args->gpa + args->size);
/* Add extra memory slots for testing */
for (i = 0; i < slots; i++) {
uint64_t region_pages = guest_num_pages / slots;
- vm_paddr_t region_start = pta->gpa + region_pages * pta->guest_page_size * i;
+ vm_paddr_t region_start = args->gpa + region_pages * args->guest_page_size * i;
vm_userspace_mem_region_add(vm, backing_src, region_start,
PERF_TEST_MEM_SLOT_INDEX + i,
}
/* Do mapping for the demand paging memory slot */
- virt_map(vm, guest_test_virt_mem, pta->gpa, guest_num_pages);
+ virt_map(vm, guest_test_virt_mem, args->gpa, guest_num_pages);
perf_test_setup_vcpus(vm, nr_vcpus, vcpus, vcpu_memory_bytes,
partition_vcpu_memory_access);
- if (pta->nested) {
+ if (args->nested) {
pr_info("Configuring vCPUs to run in L2 (nested).\n");
perf_test_setup_nested(vm, nr_vcpus, vcpus);
}