KVM: VMX: Zero the vpid module parameter if vpid is not supported
This allows reading back how the hardware is configured.
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index f4b6c4b..9b97c8e 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1202,6 +1202,9 @@
vmx_capability.ept, vmx_capability.vpid);
}
+ if (!cpu_has_vmx_vpid())
+ enable_vpid = 0;
+
min = 0;
#ifdef CONFIG_X86_64
min |= VM_EXIT_HOST_ADDR_SPACE_SIZE;
@@ -2082,7 +2085,7 @@
int vpid;
vmx->vpid = 0;
- if (!enable_vpid || !cpu_has_vmx_vpid())
+ if (!enable_vpid)
return;
spin_lock(&vmx_vpid_lock);
vpid = find_first_zero_bit(vmx_vpid_bitmap, VMX_NR_VPIDS);