diff options
Diffstat (limited to 'tools/testing/selftests/kvm/demand_paging_test.c')
| -rw-r--r-- | tools/testing/selftests/kvm/demand_paging_test.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/tools/testing/selftests/kvm/demand_paging_test.c b/tools/testing/selftests/kvm/demand_paging_test.c index 2439c4043fed..09c116a82a84 100644 --- a/tools/testing/selftests/kvm/demand_paging_test.c +++ b/tools/testing/selftests/kvm/demand_paging_test.c @@ -128,6 +128,7 @@ static void prefault_mem(void *alias, uint64_t len) static void run_test(enum vm_guest_mode mode, void *arg) { + struct memstress_vcpu_args *vcpu_args; struct test_params *p = arg; struct uffd_desc **uffd_descs = NULL; struct timespec start; @@ -145,24 +146,24 @@ static void run_test(enum vm_guest_mode mode, void *arg) "Failed to allocate buffer for guest data pattern"); memset(guest_data_prototype, 0xAB, demand_paging_size); + if (p->uffd_mode == UFFDIO_REGISTER_MODE_MINOR) { + for (i = 0; i < nr_vcpus; i++) { + vcpu_args = &memstress_args.vcpu_args[i]; + prefault_mem(addr_gpa2alias(vm, vcpu_args->gpa), + vcpu_args->pages * memstress_args.guest_page_size); + } + } + if (p->uffd_mode) { uffd_descs = malloc(nr_vcpus * sizeof(struct uffd_desc *)); TEST_ASSERT(uffd_descs, "Memory allocation failed"); - for (i = 0; i < nr_vcpus; i++) { - struct memstress_vcpu_args *vcpu_args; void *vcpu_hva; - void *vcpu_alias; vcpu_args = &memstress_args.vcpu_args[i]; /* Cache the host addresses of the region */ vcpu_hva = addr_gpa2hva(vm, vcpu_args->gpa); - vcpu_alias = addr_gpa2alias(vm, vcpu_args->gpa); - - prefault_mem(vcpu_alias, - vcpu_args->pages * memstress_args.guest_page_size); - /* * Set up user fault fd to handle demand paging * requests. @@ -207,10 +208,11 @@ static void help(char *name) { puts(""); printf("usage: %s [-h] [-m vm_mode] [-u uffd_mode] [-d uffd_delay_usec]\n" - " [-b memory] [-s type] [-v vcpus] [-o]\n", name); + " [-b memory] [-s type] [-v vcpus] [-c cpu_list] [-o]\n", name); guest_modes_help(); printf(" -u: use userfaultfd to handle vCPU page faults. Mode is a\n" " UFFD registration mode: 'MISSING' or 'MINOR'.\n"); + kvm_print_vcpu_pinning_help(); printf(" -d: add a delay in usec to the User Fault\n" " FD handler to simulate demand paging\n" " overheads. Ignored without -u.\n"); @@ -228,6 +230,7 @@ static void help(char *name) int main(int argc, char *argv[]) { int max_vcpus = kvm_check_cap(KVM_CAP_MAX_VCPUS); + const char *cpulist = NULL; struct test_params p = { .src_type = DEFAULT_VM_MEM_SRC, .partition_vcpu_memory_access = true, @@ -236,7 +239,7 @@ int main(int argc, char *argv[]) guest_modes_append_default(); - while ((opt = getopt(argc, argv, "hm:u:d:b:s:v:o")) != -1) { + while ((opt = getopt(argc, argv, "hm:u:d:b:s:v:c:o")) != -1) { switch (opt) { case 'm': guest_modes_cmdline(optarg); @@ -263,6 +266,9 @@ int main(int argc, char *argv[]) TEST_ASSERT(nr_vcpus <= max_vcpus, "Invalid number of vcpus, must be between 1 and %d", max_vcpus); break; + case 'c': + cpulist = optarg; + break; case 'o': p.partition_vcpu_memory_access = false; break; @@ -278,6 +284,12 @@ int main(int argc, char *argv[]) TEST_FAIL("userfaultfd MINOR mode requires shared memory; pick a different -s"); } + if (cpulist) { + kvm_parse_vcpu_pinning(cpulist, memstress_args.vcpu_to_pcpu, + nr_vcpus); + memstress_args.pin_vcpus = true; + } + for_each_guest_mode(run_test, &p); return 0; |