mirror of
https://github.com/clearlinux/kvmtool.git
synced 2026-08-28 18:15:41 +00:00
Sasha Levin
43835ac90f
Give proper names to vars named 'self'. Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
#include "kvm/kvm-cpu.h"
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#include "kvm/kvm.h"
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#include "kvm/util.h"
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#include <sys/ioctl.h>
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#include <stdlib.h>
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#include <assert.h>
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#define CPUID_FUNC_PERFMON 0x0A
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#define MAX_KVM_CPUID_ENTRIES 100
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static void filter_cpuid(struct kvm_cpuid2 *kvm_cpuid)
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{
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unsigned int i;
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/*
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* Filter CPUID functions that are not supported by the hypervisor.
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*/
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for (i = 0; i < kvm_cpuid->nent; i++) {
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struct kvm_cpuid_entry2 *entry = &kvm_cpuid->entries[i];
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switch (entry->function) {
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case CPUID_FUNC_PERFMON:
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entry->eax = 0x00; /* disable it */
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break;
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default:
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/* Keep the CPUID function as -is */
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break;
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};
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}
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}
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void kvm_cpu__setup_cpuid(struct kvm_cpu *vcpu)
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{
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struct kvm_cpuid2 *kvm_cpuid;
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kvm_cpuid = calloc(1, sizeof(*kvm_cpuid) + MAX_KVM_CPUID_ENTRIES * sizeof(*kvm_cpuid->entries));
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kvm_cpuid->nent = MAX_KVM_CPUID_ENTRIES;
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if (ioctl(vcpu->kvm->sys_fd, KVM_GET_SUPPORTED_CPUID, kvm_cpuid) < 0)
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die_perror("KVM_GET_SUPPORTED_CPUID failed");
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filter_cpuid(kvm_cpuid);
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if (ioctl(vcpu->vcpu_fd, KVM_SET_CPUID2, kvm_cpuid) < 0)
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die_perror("KVM_SET_CPUID2 failed");
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free(kvm_cpuid);
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}
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