From 658357638c2fdd95525dd555c86078ecaed47458 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 26 Jul 2018 14:44:50 -0700 Subject: plugin: allow retrieving list of supported MSRs Add crossvm plugin API to allow fetching list of supported MSRs. BUG=b:111083877 TEST=cargo test -p kvm; cargo test --features=plugin Change-Id: I178c7bc33d606bef10422faac6bb9afb3fe0a014 Signed-off-by: Dmitry Torokhov Reviewed-on: https://chromium-review.googlesource.com/1152229 Reviewed-by: Zach Reizner --- tests/plugin_msr_index_list.c | 49 +++++++++++++++++++++++++++++++++++++++++++ tests/plugins.rs | 5 +++++ 2 files changed, 54 insertions(+) create mode 100644 tests/plugin_msr_index_list.c (limited to 'tests') diff --git a/tests/plugin_msr_index_list.c b/tests/plugin_msr_index_list.c new file mode 100644 index 0000000..0a940ae --- /dev/null +++ b/tests/plugin_msr_index_list.c @@ -0,0 +1,49 @@ +/* + * Copyright 2018 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include +#include +#include +#include +#include + +#include "crosvm.h" + +int main(int argc, char** argv) { + struct crosvm *crosvm; + int ret = crosvm_connect(&crosvm); + if (ret) { + fprintf(stderr, "failed to connect to crosvm: %d\n", ret); + return 1; + } + + uint32_t msr_indices[256]; + int n_entries; + ret = crosvm_get_msr_index_list(crosvm, 1, msr_indices, &n_entries); + if (ret >= 0) { + fprintf(stderr, + "expected crosvm_get_msr_index_list to fail with E2BIG\n"); + return 1; + } + + + memset(msr_indices, 0, sizeof(msr_indices)); + ret = crosvm_get_msr_index_list(crosvm, 256, msr_indices, &n_entries); + if (ret < 0) { + fprintf(stderr, + "unexpected failure of crosvm_get_msr_index_list: %d\n", ret); + return 1; + } + + if (n_entries <= 1) { + fprintf(stderr, + "unexpected number of supported msr entries: %d\n", + n_entries); + return 1; + } + + return 0; +} diff --git a/tests/plugins.rs b/tests/plugins.rs index c760875..7d2d8ff 100644 --- a/tests/plugins.rs +++ b/tests/plugins.rs @@ -241,6 +241,11 @@ fn test_supported_cpuid() { test_plugin(include_str!("plugin_supported_cpuid.c")); } +#[test] +fn test_msr_index_list() { + test_plugin(include_str!("plugin_msr_index_list.c")); +} + #[test] fn test_vm_state_manipulation() { test_plugin(include_str!("plugin_vm_state.c")); -- cgit 1.4.1