[20/28] KVM: x86: nVMX: Allow nested_enable_evmcs to be NULL
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Message ID 20181203215318.15545-21-sean.j.christopherson@intel.com
State New
Headers show
Series
  • KVM: VMX: Add "vmx" dir and shatter vmx.c
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Commit Message

Sean Christopherson Dec. 3, 2018, 9:53 p.m. UTC
...so that it can conditionally set by the VMX code, i.e. iff @nested is
true.  This will in turn allow it to be moved out of vmx.c and into a
nested-specified file.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
 arch/x86/kvm/x86.c | 2 ++
 1 file changed, 2 insertions(+)

Patch
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diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index d02937760c3b..07fda370e830 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3828,6 +3828,8 @@  static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
 		return kvm_hv_activate_synic(vcpu, cap->cap ==
 					     KVM_CAP_HYPERV_SYNIC2);
 	case KVM_CAP_HYPERV_ENLIGHTENED_VMCS:
+		if (!kvm_x86_ops->nested_enable_evmcs)
+			return -ENOTTY;
 		r = kvm_x86_ops->nested_enable_evmcs(vcpu, &vmcs_version);
 		if (!r) {
 			user_ptr = (void __user *)(uintptr_t)cap->args[0];