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67730e6c53
Use the kernel's canonical $(ARCH) paths instead of the raw target triple for KVM selftests directories. KVM selftests are quite nearly the only place in the entire kernel that using the target triple for directories, tools/testing/selftests/drivers/s390x being the lone holdout. Using the kernel's preferred nomenclature eliminates the minor, but annoying, friction of having to translate to KVM's selftests directories, e.g. for pattern matching, opening files, running selftests, etc. Opportunsitically delete file comments that reference the full path of the file, as they are obviously prone to becoming stale, and serve no known purpose. Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Acked-by: Andrew Jones <ajones@ventanamicro.com> Link: https://lore.kernel.org/r/20241128005547.4077116-16-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Test for x86 KVM_CAP_MSR_PLATFORM_INFO
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*
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* Copyright (C) 2018, Google LLC.
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*
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* This work is licensed under the terms of the GNU GPL, version 2.
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*
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* Verifies expected behavior of controlling guest access to
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* MSR_PLATFORM_INFO.
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*/
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#include <fcntl.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/ioctl.h>
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#include "test_util.h"
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#include "kvm_util.h"
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#include "processor.h"
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#define MSR_PLATFORM_INFO_MAX_TURBO_RATIO 0xff00
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static void guest_code(void)
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{
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uint64_t msr_platform_info;
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uint8_t vector;
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GUEST_SYNC(true);
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msr_platform_info = rdmsr(MSR_PLATFORM_INFO);
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GUEST_ASSERT_EQ(msr_platform_info & MSR_PLATFORM_INFO_MAX_TURBO_RATIO,
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MSR_PLATFORM_INFO_MAX_TURBO_RATIO);
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GUEST_SYNC(false);
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vector = rdmsr_safe(MSR_PLATFORM_INFO, &msr_platform_info);
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GUEST_ASSERT_EQ(vector, GP_VECTOR);
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GUEST_DONE();
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}
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int main(int argc, char *argv[])
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{
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struct kvm_vcpu *vcpu;
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struct kvm_vm *vm;
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uint64_t msr_platform_info;
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struct ucall uc;
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TEST_REQUIRE(kvm_has_cap(KVM_CAP_MSR_PLATFORM_INFO));
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vm = vm_create_with_one_vcpu(&vcpu, guest_code);
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msr_platform_info = vcpu_get_msr(vcpu, MSR_PLATFORM_INFO);
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vcpu_set_msr(vcpu, MSR_PLATFORM_INFO,
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msr_platform_info | MSR_PLATFORM_INFO_MAX_TURBO_RATIO);
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for (;;) {
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vcpu_run(vcpu);
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TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO);
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switch (get_ucall(vcpu, &uc)) {
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case UCALL_SYNC:
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vm_enable_cap(vm, KVM_CAP_MSR_PLATFORM_INFO, uc.args[1]);
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break;
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case UCALL_DONE:
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goto done;
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case UCALL_ABORT:
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REPORT_GUEST_ASSERT(uc);
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default:
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TEST_FAIL("Unexpected ucall %lu", uc.cmd);
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break;
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}
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}
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done:
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kvm_vm_free(vm);
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return 0;
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}
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