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authorVitaly Kuznetsov <vkuznets@redhat.com>2021-11-16 17:34:43 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2021-11-18 02:12:15 -0500
commit2845e7353bc334d43309f5ea6d376c8fdbc94c93 (patch)
treec3ca3af4591ae4c6a701bdc15b103dfb1f9f4e11
parentKVM: s390: Cap KVM_CAP_NR_VCPUS by num_online_cpus() (diff)
downloadlinux-dev-2845e7353bc334d43309f5ea6d376c8fdbc94c93.tar.xz
linux-dev-2845e7353bc334d43309f5ea6d376c8fdbc94c93.zip
KVM: x86: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS
It doesn't make sense to return the recommended maximum number of vCPUs which exceeds the maximum possible number of vCPUs. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20211116163443.88707-7-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--arch/x86/kvm/x86.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ecd2041570d1..5a403d92833f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4179,7 +4179,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
r = !static_call(kvm_x86_cpu_has_accelerated_tpr)();
break;
case KVM_CAP_NR_VCPUS:
- r = num_online_cpus();
+ r = min_t(unsigned int, num_online_cpus(), KVM_MAX_VCPUS);
break;
case KVM_CAP_MAX_VCPUS:
r = KVM_MAX_VCPUS;