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| author | Maxim Levitsky <mlevitsk@redhat.com> | 2020-10-01 14:29:53 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-22 00:48:48 +0300 |
| commit | 72f211ecaa80a001c062829894ae5d5effab2b49 (patch) | |
| tree | b0f0002a506b9db3b38a5e4281898a683a7e1b3c /arch/x86/kvm/vmx/vmx.c | |
| parent | 7dffecaf4eabb700e7aef3cc6da333517cfc242a (diff) | |
| download | linux-72f211ecaa80a001c062829894ae5d5effab2b49.tar.xz | |
KVM: x86: allow kvm_x86_ops.set_efer to return an error value
This will be used to signal an error to the userspace, in case
the vendor code failed during handling of this msr. (e.g -ENOMEM)
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201001112954.6258-4-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 132a8cc9f9a4..a3d63ea5a090 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -2815,13 +2815,14 @@ static void enter_rmode(struct kvm_vcpu *vcpu) kvm_mmu_reset_context(vcpu); } -void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer) +int vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer) { struct vcpu_vmx *vmx = to_vmx(vcpu); struct vmx_uret_msr *msr = vmx_find_uret_msr(vmx, MSR_EFER); + /* Nothing to do if hardware doesn't support EFER. */ if (!msr) - return; + return 0; vcpu->arch.efer = efer; if (efer & EFER_LMA) { @@ -2833,6 +2834,7 @@ void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer) msr->data = efer & ~EFER_LME; } setup_msrs(vmx); + return 0; } #ifdef CONFIG_X86_64 |