Split the arch-neutral test code out of aarch64/arch_timer.c and put them into a common arch_timer.c. This is a preparation to share timer test codes in riscv.
Suggested-by: Andrew Jones ajones@ventanamicro.com Signed-off-by: Haibo Xu haibo1.xu@intel.com --- tools/testing/selftests/kvm/Makefile | 9 +- .../selftests/kvm/aarch64/arch_timer.c | 288 +----------------- tools/testing/selftests/kvm/arch_timer.c | 252 +++++++++++++++ .../selftests/kvm/include/timer_test.h | 52 ++++ 4 files changed, 317 insertions(+), 284 deletions(-) create mode 100644 tools/testing/selftests/kvm/arch_timer.c create mode 100644 tools/testing/selftests/kvm/include/timer_test.h
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 0b9c42fbce8c..fb8904e2c06a 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -140,7 +140,6 @@ TEST_GEN_PROGS_x86_64 += system_counter_offset_test TEST_GEN_PROGS_EXTENDED_x86_64 += x86_64/nx_huge_pages_test
TEST_GEN_PROGS_aarch64 += aarch64/aarch32_id_regs -TEST_GEN_PROGS_aarch64 += aarch64/arch_timer TEST_GEN_PROGS_aarch64 += aarch64/debug-exceptions TEST_GEN_PROGS_aarch64 += aarch64/hypercalls TEST_GEN_PROGS_aarch64 += aarch64/page_fault_test @@ -150,6 +149,7 @@ TEST_GEN_PROGS_aarch64 += aarch64/vcpu_width_config TEST_GEN_PROGS_aarch64 += aarch64/vgic_init TEST_GEN_PROGS_aarch64 += aarch64/vgic_irq TEST_GEN_PROGS_aarch64 += access_tracking_perf_test +TEST_GEN_PROGS_aarch64 += arch_timer TEST_GEN_PROGS_aarch64 += demand_paging_test TEST_GEN_PROGS_aarch64 += dirty_log_test TEST_GEN_PROGS_aarch64 += dirty_log_perf_test @@ -188,6 +188,7 @@ TEST_GEN_PROGS_riscv += set_memory_region_test TEST_GEN_PROGS_riscv += kvm_binary_stats_test
SPLIT_TESTS += get-reg-list +SPLIT_TESTS += arch_timer
TEST_PROGS += $(TEST_PROGS_$(ARCH_DIR)) TEST_GEN_PROGS += $(TEST_GEN_PROGS_$(ARCH_DIR)) @@ -248,13 +249,10 @@ TEST_DEP_FILES += $(patsubst %.o, %.d, $(SPLIT_TESTS_OBJS)) -include $(TEST_DEP_FILES)
$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): %: %.o - $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $< $(LIBKVM_OBJS) $(LDLIBS) -o $@ + $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@ $(TEST_GEN_OBJ): $(OUTPUT)/%.o: %.c $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@
-$(SPLIT_TESTS_TARGETS): %: %.o $(SPLIT_TESTS_OBJS) - $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@ - EXTRA_CLEAN += $(LIBKVM_OBJS) $(TEST_DEP_FILES) $(TEST_GEN_OBJ) $(SPLIT_TESTS_OBJS) cscope.*
x := $(shell mkdir -p $(sort $(dir $(LIBKVM_C_OBJ) $(LIBKVM_S_OBJ)))) @@ -273,6 +271,7 @@ $(LIBKVM_STRING_OBJ): $(OUTPUT)/%.o: %.c x := $(shell mkdir -p $(sort $(dir $(TEST_GEN_PROGS)))) $(TEST_GEN_PROGS): $(LIBKVM_OBJS) $(TEST_GEN_PROGS_EXTENDED): $(LIBKVM_OBJS) +$(SPLIT_TESTS_TARGETS): $(OUTPUT)/%: $(ARCH_DIR)/%.o
cscope: include_paths = $(LINUX_TOOL_INCLUDE) $(LINUX_HDR_PATH) include lib .. cscope: diff --git a/tools/testing/selftests/kvm/aarch64/arch_timer.c b/tools/testing/selftests/kvm/aarch64/arch_timer.c index b63859829a96..ceb649548751 100644 --- a/tools/testing/selftests/kvm/aarch64/arch_timer.c +++ b/tools/testing/selftests/kvm/aarch64/arch_timer.c @@ -1,91 +1,25 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * arch_timer.c - Tests the aarch64 timer IRQ functionality - * * The test validates both the virtual and physical timer IRQs using - * CVAL and TVAL registers. This consitutes the four stages in the test. - * The guest's main thread configures the timer interrupt for a stage - * and waits for it to fire, with a timeout equal to the timer period. - * It asserts that the timeout doesn't exceed the timer period. - * - * On the other hand, upon receipt of an interrupt, the guest's interrupt - * handler validates the interrupt by checking if the architectural state - * is in compliance with the specifications. - * - * The test provides command-line options to configure the timer's - * period (-p), number of vCPUs (-n), and iterations per stage (-i). - * To stress-test the timer stack even more, an option to migrate the - * vCPUs across pCPUs (-m), at a particular rate, is also provided. + * CVAL and TVAL registers. * * Copyright (c) 2021, Google LLC. */ #define _GNU_SOURCE
-#include <stdlib.h> -#include <pthread.h> -#include <linux/kvm.h> -#include <linux/sizes.h> -#include <linux/bitmap.h> -#include <sys/sysinfo.h> - -#include "kvm_util.h" -#include "processor.h" -#include "delay.h" #include "arch_timer.h" +#include "delay.h" #include "gic.h" +#include "processor.h" +#include "timer_test.h" #include "vgic.h"
-#define NR_VCPUS_DEF 4 -#define NR_TEST_ITERS_DEF 5 -#define TIMER_TEST_PERIOD_MS_DEF 10 -#define TIMER_TEST_ERR_MARGIN_US 100 -#define TIMER_TEST_MIGRATION_FREQ_MS 2 - -struct test_args { - int nr_vcpus; - int nr_iter; - int timer_period_ms; - int migration_freq_ms; - struct kvm_arm_counter_offset offset; -}; - -static struct test_args test_args = { - .nr_vcpus = NR_VCPUS_DEF, - .nr_iter = NR_TEST_ITERS_DEF, - .timer_period_ms = TIMER_TEST_PERIOD_MS_DEF, - .migration_freq_ms = TIMER_TEST_MIGRATION_FREQ_MS, - .offset = { .reserved = 1 }, -}; - -#define msecs_to_usecs(msec) ((msec) * 1000LL) - -#define GICD_BASE_GPA 0x8000000ULL -#define GICR_BASE_GPA 0x80A0000ULL - -enum guest_stage { - GUEST_STAGE_VTIMER_CVAL = 1, - GUEST_STAGE_VTIMER_TVAL, - GUEST_STAGE_PTIMER_CVAL, - GUEST_STAGE_PTIMER_TVAL, - GUEST_STAGE_MAX, -}; - -/* Shared variables between host and guest */ -struct test_vcpu_shared_data { - int nr_iter; - enum guest_stage guest_stage; - uint64_t xcnt; -}; - -static struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; -static pthread_t pt_vcpu_run[KVM_MAX_VCPUS]; -static struct test_vcpu_shared_data vcpu_shared_data[KVM_MAX_VCPUS]; +extern struct test_args test_args; +extern struct kvm_vcpu *vcpus[]; +extern struct test_vcpu_shared_data vcpu_shared_data[];
static int vtimer_irq, ptimer_irq;
-static unsigned long *vcpu_done_map; -static pthread_mutex_t vcpu_done_map_lock; - static void guest_configure_timer_action(struct test_vcpu_shared_data *shared_data) { @@ -222,137 +156,6 @@ static void guest_code(void) GUEST_DONE(); }
-static void *test_vcpu_run(void *arg) -{ - unsigned int vcpu_idx = (unsigned long)arg; - struct ucall uc; - struct kvm_vcpu *vcpu = vcpus[vcpu_idx]; - struct kvm_vm *vm = vcpu->vm; - struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[vcpu_idx]; - - vcpu_run(vcpu); - - /* Currently, any exit from guest is an indication of completion */ - pthread_mutex_lock(&vcpu_done_map_lock); - __set_bit(vcpu_idx, vcpu_done_map); - pthread_mutex_unlock(&vcpu_done_map_lock); - - switch (get_ucall(vcpu, &uc)) { - case UCALL_SYNC: - case UCALL_DONE: - break; - case UCALL_ABORT: - sync_global_from_guest(vm, *shared_data); - fprintf(stderr, "Guest assert failed, vcpu %u; stage; %u; iter: %u\n", - vcpu_idx, shared_data->guest_stage, shared_data->nr_iter); - REPORT_GUEST_ASSERT(uc); - break; - default: - TEST_FAIL("Unexpected guest exit\n"); - } - - return NULL; -} - -static uint32_t test_get_pcpu(void) -{ - uint32_t pcpu; - unsigned int nproc_conf; - cpu_set_t online_cpuset; - - nproc_conf = get_nprocs_conf(); - sched_getaffinity(0, sizeof(cpu_set_t), &online_cpuset); - - /* Randomly find an available pCPU to place a vCPU on */ - do { - pcpu = rand() % nproc_conf; - } while (!CPU_ISSET(pcpu, &online_cpuset)); - - return pcpu; -} - -static int test_migrate_vcpu(unsigned int vcpu_idx) -{ - int ret; - cpu_set_t cpuset; - uint32_t new_pcpu = test_get_pcpu(); - - CPU_ZERO(&cpuset); - CPU_SET(new_pcpu, &cpuset); - - pr_debug("Migrating vCPU: %u to pCPU: %u\n", vcpu_idx, new_pcpu); - - ret = pthread_setaffinity_np(pt_vcpu_run[vcpu_idx], - sizeof(cpuset), &cpuset); - - /* Allow the error where the vCPU thread is already finished */ - TEST_ASSERT(ret == 0 || ret == ESRCH, - "Failed to migrate the vCPU:%u to pCPU: %u; ret: %d\n", - vcpu_idx, new_pcpu, ret); - - return ret; -} - -static void *test_vcpu_migration(void *arg) -{ - unsigned int i, n_done; - bool vcpu_done; - - do { - usleep(msecs_to_usecs(test_args.migration_freq_ms)); - - for (n_done = 0, i = 0; i < test_args.nr_vcpus; i++) { - pthread_mutex_lock(&vcpu_done_map_lock); - vcpu_done = test_bit(i, vcpu_done_map); - pthread_mutex_unlock(&vcpu_done_map_lock); - - if (vcpu_done) { - n_done++; - continue; - } - - test_migrate_vcpu(i); - } - } while (test_args.nr_vcpus != n_done); - - return NULL; -} - -static void test_run(struct kvm_vm *vm) -{ - pthread_t pt_vcpu_migration; - unsigned int i; - int ret; - - pthread_mutex_init(&vcpu_done_map_lock, NULL); - vcpu_done_map = bitmap_zalloc(test_args.nr_vcpus); - TEST_ASSERT(vcpu_done_map, "Failed to allocate vcpu done bitmap\n"); - - for (i = 0; i < (unsigned long)test_args.nr_vcpus; i++) { - ret = pthread_create(&pt_vcpu_run[i], NULL, test_vcpu_run, - (void *)(unsigned long)i); - TEST_ASSERT(!ret, "Failed to create vCPU-%d pthread\n", i); - } - - /* Spawn a thread to control the vCPU migrations */ - if (test_args.migration_freq_ms) { - srand(time(NULL)); - - ret = pthread_create(&pt_vcpu_migration, NULL, - test_vcpu_migration, NULL); - TEST_ASSERT(!ret, "Failed to create the migration pthread\n"); - } - - - for (i = 0; i < test_args.nr_vcpus; i++) - pthread_join(pt_vcpu_run[i], NULL); - - if (test_args.migration_freq_ms) - pthread_join(pt_vcpu_migration, NULL); - - bitmap_free(vcpu_done_map); -} - static void test_init_timer_irq(struct kvm_vm *vm) { /* Timer initid should be same for all the vCPUs, so query only vCPU-0 */ @@ -369,7 +172,7 @@ static void test_init_timer_irq(struct kvm_vm *vm)
static int gic_fd;
-static struct kvm_vm *test_vm_create(void) +struct kvm_vm *test_vm_create(void) { struct kvm_vm *vm; unsigned int i; @@ -400,81 +203,8 @@ static struct kvm_vm *test_vm_create(void) return vm; }
-static void test_vm_cleanup(struct kvm_vm *vm) +void test_vm_cleanup(struct kvm_vm *vm) { close(gic_fd); kvm_vm_free(vm); } - -static void test_print_help(char *name) -{ - pr_info("Usage: %s [-h] [-n nr_vcpus] [-i iterations] [-p timer_period_ms]\n", - name); - pr_info("\t-n: Number of vCPUs to configure (default: %u; max: %u)\n", - NR_VCPUS_DEF, KVM_MAX_VCPUS); - pr_info("\t-i: Number of iterations per stage (default: %u)\n", - NR_TEST_ITERS_DEF); - pr_info("\t-p: Periodicity (in ms) of the guest timer (default: %u)\n", - TIMER_TEST_PERIOD_MS_DEF); - pr_info("\t-m: Frequency (in ms) of vCPUs to migrate to different pCPU. 0 to turn off (default: %u)\n", - TIMER_TEST_MIGRATION_FREQ_MS); - pr_info("\t-o: Counter offset (in counter cycles, default: 0)\n"); - pr_info("\t-h: print this help screen\n"); -} - -static bool parse_args(int argc, char *argv[]) -{ - int opt; - - while ((opt = getopt(argc, argv, "hn:i:p:m:o:")) != -1) { - switch (opt) { - case 'n': - test_args.nr_vcpus = atoi_positive("Number of vCPUs", optarg); - if (test_args.nr_vcpus > KVM_MAX_VCPUS) { - pr_info("Max allowed vCPUs: %u\n", - KVM_MAX_VCPUS); - goto err; - } - break; - case 'i': - test_args.nr_iter = atoi_positive("Number of iterations", optarg); - break; - case 'p': - test_args.timer_period_ms = atoi_positive("Periodicity", optarg); - break; - case 'm': - test_args.migration_freq_ms = atoi_non_negative("Frequency", optarg); - break; - case 'o': - test_args.offset.counter_offset = strtol(optarg, NULL, 0); - test_args.offset.reserved = 0; - break; - case 'h': - default: - goto err; - } - } - - return true; - -err: - test_print_help(argv[0]); - return false; -} - -int main(int argc, char *argv[]) -{ - struct kvm_vm *vm; - - if (!parse_args(argc, argv)) - exit(KSFT_SKIP); - - __TEST_REQUIRE(!test_args.migration_freq_ms || get_nprocs() >= 2, - "At least two physical CPUs needed for vCPU migration"); - - vm = test_vm_create(); - test_run(vm); - test_vm_cleanup(vm); - - return 0; -} diff --git a/tools/testing/selftests/kvm/arch_timer.c b/tools/testing/selftests/kvm/arch_timer.c new file mode 100644 index 000000000000..529024f58c98 --- /dev/null +++ b/tools/testing/selftests/kvm/arch_timer.c @@ -0,0 +1,252 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * arch_timer.c - Tests the arch timer IRQ functionality + * + * The guest's main thread configures the timer interrupt for and waits + * for it to fire, with a timeout equal to the timer period. + * It asserts that the timeout doesn't exceed the timer period. + * + * On the other hand, upon receipt of an interrupt, the guest's interrupt + * handler validates the interrupt by checking if the architectural state + * is in compliance with the specifications. + * + * The test provides command-line options to configure the timer's + * period (-p), number of vCPUs (-n), and iterations per stage (-i). + * To stress-test the timer stack even more, an option to migrate the + * vCPUs across pCPUs (-m), at a particular rate, is also provided. + * + * Copyright (c) 2021, Google LLC. + */ + +#define _GNU_SOURCE + +#include <stdlib.h> +#include <pthread.h> +#include <linux/sizes.h> +#include <linux/bitmap.h> +#include <sys/sysinfo.h> + +#include "timer_test.h" + +struct test_args test_args = { + .nr_vcpus = NR_VCPUS_DEF, + .nr_iter = NR_TEST_ITERS_DEF, + .timer_period_ms = TIMER_TEST_PERIOD_MS_DEF, + .migration_freq_ms = TIMER_TEST_MIGRATION_FREQ_MS, +#ifdef __aarch64__ + .offset = { .reserved = 1 }, +#endif +}; + +struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; +struct test_vcpu_shared_data vcpu_shared_data[KVM_MAX_VCPUS]; + +static pthread_t pt_vcpu_run[KVM_MAX_VCPUS]; +static unsigned long *vcpu_done_map; +static pthread_mutex_t vcpu_done_map_lock; + +static void *test_vcpu_run(void *arg) +{ + unsigned int vcpu_idx = (unsigned long)arg; + struct ucall uc; + struct kvm_vcpu *vcpu = vcpus[vcpu_idx]; + struct kvm_vm *vm = vcpu->vm; + struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[vcpu_idx]; + + vcpu_run(vcpu); + + /* Currently, any exit from guest is an indication of completion */ + pthread_mutex_lock(&vcpu_done_map_lock); + __set_bit(vcpu_idx, vcpu_done_map); + pthread_mutex_unlock(&vcpu_done_map_lock); + + switch (get_ucall(vcpu, &uc)) { + case UCALL_SYNC: + case UCALL_DONE: + break; + case UCALL_ABORT: + sync_global_from_guest(vm, *shared_data); + fprintf(stderr, "Guest assert failed, vcpu %u; stage; %u; iter: %u\n", + vcpu_idx, shared_data->guest_stage, shared_data->nr_iter); + REPORT_GUEST_ASSERT(uc); + break; + default: + TEST_FAIL("Unexpected guest exit\n"); + } + + pr_info("PASS(vCPU-%d).\n", vcpu_idx); + + return NULL; +} + +static uint32_t test_get_pcpu(void) +{ + uint32_t pcpu; + unsigned int nproc_conf; + cpu_set_t online_cpuset; + + nproc_conf = get_nprocs_conf(); + sched_getaffinity(0, sizeof(cpu_set_t), &online_cpuset); + + /* Randomly find an available pCPU to place a vCPU on */ + do { + pcpu = rand() % nproc_conf; + } while (!CPU_ISSET(pcpu, &online_cpuset)); + + return pcpu; +} + +static int test_migrate_vcpu(unsigned int vcpu_idx) +{ + int ret; + cpu_set_t cpuset; + uint32_t new_pcpu = test_get_pcpu(); + + CPU_ZERO(&cpuset); + CPU_SET(new_pcpu, &cpuset); + + pr_debug("Migrating vCPU: %u to pCPU: %u\n", vcpu_idx, new_pcpu); + + ret = pthread_setaffinity_np(pt_vcpu_run[vcpu_idx], + sizeof(cpuset), &cpuset); + + /* Allow the error where the vCPU thread is already finished */ + TEST_ASSERT(ret == 0 || ret == ESRCH, + "Failed to migrate the vCPU:%u to pCPU: %u; ret: %d\n", + vcpu_idx, new_pcpu, ret); + + return ret; +} + +static void *test_vcpu_migration(void *arg) +{ + unsigned int i, n_done; + bool vcpu_done; + + do { + usleep(msecs_to_usecs(test_args.migration_freq_ms)); + + for (n_done = 0, i = 0; i < test_args.nr_vcpus; i++) { + pthread_mutex_lock(&vcpu_done_map_lock); + vcpu_done = test_bit(i, vcpu_done_map); + pthread_mutex_unlock(&vcpu_done_map_lock); + + if (vcpu_done) { + n_done++; + continue; + } + + test_migrate_vcpu(i); + } + } while (test_args.nr_vcpus != n_done); + + return NULL; +} + +static void test_run(struct kvm_vm *vm) +{ + pthread_t pt_vcpu_migration; + unsigned int i; + int ret; + + pthread_mutex_init(&vcpu_done_map_lock, NULL); + vcpu_done_map = bitmap_zalloc(test_args.nr_vcpus); + TEST_ASSERT(vcpu_done_map, "Failed to allocate vcpu done bitmap\n"); + + for (i = 0; i < (unsigned long)test_args.nr_vcpus; i++) { + ret = pthread_create(&pt_vcpu_run[i], NULL, test_vcpu_run, + (void *)(unsigned long)i); + TEST_ASSERT(!ret, "Failed to create vCPU-%d pthread\n", i); + } + + /* Spawn a thread to control the vCPU migrations */ + if (test_args.migration_freq_ms) { + srand(time(NULL)); + + ret = pthread_create(&pt_vcpu_migration, NULL, + test_vcpu_migration, NULL); + TEST_ASSERT(!ret, "Failed to create the migration pthread\n"); + } + + + for (i = 0; i < test_args.nr_vcpus; i++) + pthread_join(pt_vcpu_run[i], NULL); + + if (test_args.migration_freq_ms) + pthread_join(pt_vcpu_migration, NULL); + + bitmap_free(vcpu_done_map); +} + +static void test_print_help(char *name) +{ + pr_info("Usage: %s [-h] [-n nr_vcpus] [-i iterations] [-p timer_period_ms]\n", + name); + pr_info("\t-n: Number of vCPUs to configure (default: %u; max: %u)\n", + NR_VCPUS_DEF, KVM_MAX_VCPUS); + pr_info("\t-i: Number of iterations per stage (default: %u)\n", + NR_TEST_ITERS_DEF); + pr_info("\t-p: Periodicity (in ms) of the guest timer (default: %u)\n", + TIMER_TEST_PERIOD_MS_DEF); + pr_info("\t-m: Frequency (in ms) of vCPUs to migrate to different pCPU. 0 to turn off (default: %u)\n", + TIMER_TEST_MIGRATION_FREQ_MS); + pr_info("\t-o: Counter offset (in counter cycles, default: 0)\n"); + pr_info("\t-h: print this help screen\n"); +} + +static bool parse_args(int argc, char *argv[]) +{ + int opt; + + while ((opt = getopt(argc, argv, "hn:i:p:m:o:")) != -1) { + switch (opt) { + case 'n': + test_args.nr_vcpus = atoi_positive("Number of vCPUs", optarg); + if (test_args.nr_vcpus > KVM_MAX_VCPUS) { + pr_info("Max allowed vCPUs: %u\n", + KVM_MAX_VCPUS); + goto err; + } + break; + case 'i': + test_args.nr_iter = atoi_positive("Number of iterations", optarg); + break; + case 'p': + test_args.timer_period_ms = atoi_positive("Periodicity", optarg); + break; + case 'm': + test_args.migration_freq_ms = atoi_non_negative("Frequency", optarg); + break; + case 'o': + test_args.offset.counter_offset = strtol(optarg, NULL, 0); + test_args.offset.reserved = 0; + break; + case 'h': + default: + goto err; + } + } + + return true; + +err: + test_print_help(argv[0]); + return false; +} + +int main(int argc, char *argv[]) +{ + struct kvm_vm *vm; + + if (!parse_args(argc, argv)) + exit(KSFT_SKIP); + + __TEST_REQUIRE(!test_args.migration_freq_ms || get_nprocs() >= 2, + "At least two physical CPUs needed for vCPU migration"); + + vm = test_vm_create(); + test_run(vm); + test_vm_cleanup(vm); + + return 0; +} diff --git a/tools/testing/selftests/kvm/include/timer_test.h b/tools/testing/selftests/kvm/include/timer_test.h new file mode 100644 index 000000000000..109e4d635627 --- /dev/null +++ b/tools/testing/selftests/kvm/include/timer_test.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * tools/testing/selftests/kvm/include/timer_test.h + * + * Copyright (C) 2018, Google LLC + */ + +#ifndef SELFTEST_KVM_TIMER_TEST_H +#define SELFTEST_KVM_TIMER_TEST_H + +#include "kvm_util.h" + +#define NR_VCPUS_DEF 4 +#define NR_TEST_ITERS_DEF 5 +#define TIMER_TEST_PERIOD_MS_DEF 10 +#define TIMER_TEST_ERR_MARGIN_US 100 +#define TIMER_TEST_MIGRATION_FREQ_MS 2 + +#define msecs_to_usecs(msec) ((msec) * 1000LL) + +#define GICD_BASE_GPA 0x8000000ULL +#define GICR_BASE_GPA 0x80A0000ULL + +enum guest_stage { + GUEST_STAGE_VTIMER_CVAL=1, + GUEST_STAGE_VTIMER_TVAL, + GUEST_STAGE_PTIMER_CVAL, + GUEST_STAGE_PTIMER_TVAL, + GUEST_STAGE_MAX, +}; + +/* Timer test cmdline parameters */ +struct test_args +{ + int nr_vcpus; + int nr_iter; + int timer_period_ms; + int migration_freq_ms; + struct kvm_arm_counter_offset offset; +}; + +/* Shared variables between host and guest */ +struct test_vcpu_shared_data { + int nr_iter; + enum guest_stage guest_stage; + uint64_t xcnt; +}; + +struct kvm_vm* test_vm_create(void); +void test_vm_cleanup(struct kvm_vm *vm); + +#endif /* SELFTEST_KVM_TIMER_TEST_H */