From 919818abc2ca0721f1cd296fbc24601d9044f993 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Mon, 23 Mar 2009 18:01:29 +0200 Subject: [PATCH] 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 --- arch/x86/kvm/vmx.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index f4b6c4bcee29..9b97c8e3cfd1 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1202,6 +1202,9 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf) 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 @@ static void allocate_vpid(struct vcpu_vmx *vmx) 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);