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dadb7625ea
The guest may need to check for KVM extensions before blindly using them. TEST=cargo test --features plugin; cargo test -p kvm; ./build_test BUG=chromium:800626 Change-Id: If87b928753cd71adeabac4fc7732c3fce7265834 Reviewed-on: https://chromium-review.googlesource.com/906008 Commit-Ready: Zach Reizner <zachr@chromium.org> Tested-by: Zach Reizner <zachr@chromium.org> Reviewed-by: Dylan Reid <dgreid@chromium.org>
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/*
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* Copyright 2018 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <linux/memfd.h>
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#include <pthread.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/syscall.h>
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#include <time.h>
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#include <unistd.h>
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#include "crosvm.h"
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int main(int argc, char** argv) {
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struct crosvm *crosvm;
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int ret = crosvm_connect(&crosvm);
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if (ret) {
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fprintf(stderr, "failed to connect to crosvm: %d\n", ret);
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return 1;
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}
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bool supported;
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ret = crosvm_check_extension(crosvm, KVM_CAP_IRQCHIP, &supported);
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if (ret) {
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fprintf(stderr, "failed to check for KVM extension: %d\n", ret);
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return 1;
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}
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if (!supported) {
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fprintf(stderr, "expected KVM extension to be supported\n");
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return 1;
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}
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// Assume s390 extensions aren't supported because we shouldn't be running on one.
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ret = crosvm_check_extension(crosvm, KVM_CAP_S390_PSW, &supported);
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if (ret) {
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fprintf(stderr, "failed to check for KVM extension: %d\n", ret);
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return 1;
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}
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if (supported) {
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fprintf(stderr, "unexpected KVM extension is supported\n");
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return 1;
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}
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return 0;
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}
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