diff options
7 files changed, 30 insertions, 23 deletions
diff --git a/tools/testing/selftests/kvm/access_tracking_perf_test.c b/tools/testing/selftests/kvm/access_tracking_perf_test.c index da7196fd1b23..c9de66537ec3 100644 --- a/tools/testing/selftests/kvm/access_tracking_perf_test.c +++ b/tools/testing/selftests/kvm/access_tracking_perf_test.c @@ -596,11 +596,8 @@ int main(int argc, char *argv[]) if (ret) return ret; } else { - page_idle_fd = open("/sys/kernel/mm/page_idle/bitmap", O_RDWR); - __TEST_REQUIRE(page_idle_fd >= 0, - "Couldn't open /sys/kernel/mm/page_idle/bitmap. " - "Is CONFIG_IDLE_PAGE_TRACKING enabled?"); - + page_idle_fd = __open_path_or_exit("/sys/kernel/mm/page_idle/bitmap", O_RDWR, + "Is CONFIG_IDLE_PAGE_TRACKING enabled?"); close(page_idle_fd); puts("Using page_idle for aging"); diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index e18d4bb1372f..23a506d7eca3 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -256,6 +256,7 @@ struct vm_guest_mode_params { }; extern const struct vm_guest_mode_params vm_guest_mode_params[]; +int __open_path_or_exit(const char *path, int flags, const char *enoent_help); int open_path_or_exit(const char *path, int flags); int open_kvm_dev_path_or_exit(void); diff --git a/tools/testing/selftests/kvm/include/x86/processor.h b/tools/testing/selftests/kvm/include/x86/processor.h index b11b5a53ebd5..2efb05c2f2fb 100644 --- a/tools/testing/selftests/kvm/include/x86/processor.h +++ b/tools/testing/selftests/kvm/include/x86/processor.h @@ -1150,7 +1150,6 @@ do { \ void kvm_get_cpu_address_width(unsigned int *pa_bits, unsigned int *va_bits); void kvm_init_vm_address_properties(struct kvm_vm *vm); -bool vm_is_unrestricted_guest(struct kvm_vm *vm); struct ex_regs { uint64_t rax, rcx, rdx, rbx; @@ -1325,6 +1324,11 @@ static inline bool kvm_is_forced_emulation_enabled(void) return !!get_kvm_param_integer("force_emulation_prefix"); } +static inline bool kvm_is_unrestricted_guest_enabled(void) +{ + return get_kvm_intel_param_bool("unrestricted_guest"); +} + uint64_t *__vm_get_page_table_entry(struct kvm_vm *vm, uint64_t vaddr, int *level); uint64_t *vm_get_page_table_entry(struct kvm_vm *vm, uint64_t vaddr); diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 76a20cfe78d6..c3f5142b0a54 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -26,15 +26,27 @@ static uint32_t last_guest_seed; static int vcpu_mmap_sz(void); -int open_path_or_exit(const char *path, int flags) +int __open_path_or_exit(const char *path, int flags, const char *enoent_help) { int fd; fd = open(path, flags); - __TEST_REQUIRE(fd >= 0 || errno != ENOENT, "Cannot open %s: %s", path, strerror(errno)); - TEST_ASSERT(fd >= 0, "Failed to open '%s'", path); + if (fd < 0) + goto error; return fd; + +error: + if (errno == EACCES || errno == ENOENT) + ksft_exit_skip("- Cannot open '%s': %s. %s\n", + path, strerror(errno), + errno == EACCES ? "Root required?" : enoent_help); + TEST_FAIL("Failed to open '%s'", path); +} + +int open_path_or_exit(const char *path, int flags) +{ + return __open_path_or_exit(path, flags, ""); } /* @@ -48,7 +60,7 @@ int open_path_or_exit(const char *path, int flags) */ static int _open_kvm_dev_path_or_exit(int flags) { - return open_path_or_exit(KVM_DEV_PATH, flags); + return __open_path_or_exit(KVM_DEV_PATH, flags, "Is KVM loaded and enabled?"); } int open_kvm_dev_path_or_exit(void) @@ -64,6 +76,9 @@ static ssize_t get_module_param(const char *module_name, const char *param, ssize_t bytes_read; int fd, r; + /* Verify KVM is loaded, to provide a more helpful SKIP message. */ + close(open_kvm_dev_path_or_exit()); + r = snprintf(path, path_size, "/sys/module/%s/parameters/%s", module_name, param); TEST_ASSERT(r < path_size, diff --git a/tools/testing/selftests/kvm/lib/sparsebit.c b/tools/testing/selftests/kvm/lib/sparsebit.c index cfed9d26cc71..a99188f87a38 100644 --- a/tools/testing/selftests/kvm/lib/sparsebit.c +++ b/tools/testing/selftests/kvm/lib/sparsebit.c @@ -116,7 +116,7 @@ * * + A node with all mask bits set only occurs when the last bit * described by the previous node is not equal to this nodes - * starting index - 1. All such occurences of this condition are + * starting index - 1. All such occurrences of this condition are * avoided by moving the setting of the nodes mask bits into * the previous nodes num_after setting. * @@ -592,7 +592,7 @@ static struct node *node_split(struct sparsebit *s, sparsebit_idx_t idx) * * + A node with all mask bits set only occurs when the last bit * described by the previous node is not equal to this nodes - * starting index - 1. All such occurences of this condition are + * starting index - 1. All such occurrences of this condition are * avoided by moving the setting of the nodes mask bits into * the previous nodes num_after setting. */ diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testing/selftests/kvm/lib/x86/processor.c index a92dc1dad085..d4c19ac885a9 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -1264,16 +1264,6 @@ done: return min(max_gfn, ht_gfn - 1); } -/* Returns true if kvm_intel was loaded with unrestricted_guest=1. */ -bool vm_is_unrestricted_guest(struct kvm_vm *vm) -{ - /* Ensure that a KVM vendor-specific module is loaded. */ - if (vm == NULL) - close(open_kvm_dev_path_or_exit()); - - return get_kvm_intel_param_bool("unrestricted_guest"); -} - void kvm_selftest_arch_init(void) { host_cpu_is_intel = this_cpu_is_intel(); diff --git a/tools/testing/selftests/kvm/x86/vmx_exception_with_invalid_guest_state.c b/tools/testing/selftests/kvm/x86/vmx_exception_with_invalid_guest_state.c index 3fd6eceab46f..2cae86d9d5e2 100644 --- a/tools/testing/selftests/kvm/x86/vmx_exception_with_invalid_guest_state.c +++ b/tools/testing/selftests/kvm/x86/vmx_exception_with_invalid_guest_state.c @@ -110,7 +110,7 @@ int main(int argc, char *argv[]) struct kvm_vm *vm; TEST_REQUIRE(host_cpu_is_intel); - TEST_REQUIRE(!vm_is_unrestricted_guest(NULL)); + TEST_REQUIRE(!kvm_is_unrestricted_guest_enabled()); vm = vm_create_with_one_vcpu(&vcpu, guest_code); get_set_sigalrm_vcpu(vcpu); |