diff options
| -rw-r--r-- | tools/testing/selftests/kvm/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/mmio_warning_test.c | 121 |
2 files changed, 0 insertions, 122 deletions
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 914987220a62..4412b42d95de 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -86,7 +86,6 @@ TEST_GEN_PROGS_x86_64 += x86_64/hyperv_svm_test TEST_GEN_PROGS_x86_64 += x86_64/hyperv_tlb_flush TEST_GEN_PROGS_x86_64 += x86_64/kvm_clock_test TEST_GEN_PROGS_x86_64 += x86_64/kvm_pv_test -TEST_GEN_PROGS_x86_64 += x86_64/mmio_warning_test TEST_GEN_PROGS_x86_64 += x86_64/monitor_mwait_test TEST_GEN_PROGS_x86_64 += x86_64/nested_exceptions_test TEST_GEN_PROGS_x86_64 += x86_64/platform_info_test diff --git a/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c b/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c deleted file mode 100644 index ce1ccc4c1503..000000000000 --- a/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c +++ /dev/null @@ -1,121 +0,0 @@ -/* - * mmio_warning_test - * - * Copyright (C) 2019, Google LLC. - * - * This work is licensed under the terms of the GNU GPL, version 2. - * - * Test that we don't get a kernel warning when we call KVM_RUN after a - * triple fault occurs. To get the triple fault to occur we call KVM_RUN - * on a VCPU that hasn't been properly setup. - * - */ - -#define _GNU_SOURCE -#include <fcntl.h> -#include <kvm_util.h> -#include <linux/kvm.h> -#include <processor.h> -#include <pthread.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/ioctl.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <test_util.h> -#include <unistd.h> - -#define NTHREAD 4 -#define NPROCESS 5 - -struct thread_context { - int kvmcpu; - struct kvm_run *run; -}; - -void *thr(void *arg) -{ - struct thread_context *tc = (struct thread_context *)arg; - int res; - int kvmcpu = tc->kvmcpu; - struct kvm_run *run = tc->run; - - res = ioctl(kvmcpu, KVM_RUN, 0); - pr_info("ret1=%d exit_reason=%d suberror=%d\n", - res, run->exit_reason, run->internal.suberror); - - return 0; -} - -void test(void) -{ - int i, kvm, kvmvm, kvmcpu; - pthread_t th[NTHREAD]; - struct kvm_run *run; - struct thread_context tc; - - kvm = open("/dev/kvm", O_RDWR); - TEST_ASSERT(kvm != -1, "failed to open /dev/kvm"); - kvmvm = __kvm_ioctl(kvm, KVM_CREATE_VM, NULL); - TEST_ASSERT(kvmvm > 0, KVM_IOCTL_ERROR(KVM_CREATE_VM, kvmvm)); - kvmcpu = ioctl(kvmvm, KVM_CREATE_VCPU, 0); - TEST_ASSERT(kvmcpu != -1, KVM_IOCTL_ERROR(KVM_CREATE_VCPU, kvmcpu)); - run = (struct kvm_run *)mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, - kvmcpu, 0); - tc.kvmcpu = kvmcpu; - tc.run = run; - srand(getpid()); - for (i = 0; i < NTHREAD; i++) { - pthread_create(&th[i], NULL, thr, (void *)(uintptr_t)&tc); - usleep(rand() % 10000); - } - for (i = 0; i < NTHREAD; i++) - pthread_join(th[i], NULL); -} - -int get_warnings_count(void) -{ - int warnings; - FILE *f; - - f = popen("dmesg | grep \"WARNING:\" | wc -l", "r"); - if (fscanf(f, "%d", &warnings) < 1) - warnings = 0; - pclose(f); - - return warnings; -} - -int main(void) -{ - int warnings_before, warnings_after; - - TEST_REQUIRE(host_cpu_is_intel); - - TEST_REQUIRE(!vm_is_unrestricted_guest(NULL)); - - warnings_before = get_warnings_count(); - - for (int i = 0; i < NPROCESS; ++i) { - int status; - int pid = fork(); - - if (pid < 0) - exit(1); - if (pid == 0) { - test(); - exit(0); - } - while (waitpid(pid, &status, __WALL) != pid) - ; - } - - warnings_after = get_warnings_count(); - TEST_ASSERT(warnings_before == warnings_after, - "Warnings found in kernel. Run 'dmesg' to inspect them."); - - return 0; -} |