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authorEddie Dong <eddie.dong@intel.com>2007-11-11 12:28:35 +0200
committerAvi Kivity <avi@qumranet.com>2008-01-30 17:53:01 +0200
commite5edaa01c4cea5f60c617fac989c6458df0ecc4e (patch)
tree39f9d423a89e7447bfbe5c2aeb4704a0ccfbbfd1 /drivers/kvm/vmx.c
parent8a70cc3d0f4877f862ac9cace2e61e4e5116b502 (diff)
KVM: VMX: wbinvd exiting
Add wbinvd VM Exit support to prepare for pass-through device cache emulation and also enhance real time responsiveness. Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/vmx.c')
-rw-r--r--drivers/kvm/vmx.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index 26719aa9701..c3bde753271 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -980,7 +980,8 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf)
#endif
if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) {
min = 0;
- opt = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
+ opt = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
+ SECONDARY_EXEC_WBINVD_EXITING;
if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS2,
&_cpu_based_2nd_exec_control) < 0)
return -EIO;
@@ -2133,6 +2134,13 @@ static int handle_vmcall(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
return 1;
}
+static int handle_wbinvd(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
+{
+ skip_emulated_instruction(vcpu);
+ /* TODO: Add support for VT-d/pass-through device */
+ return 1;
+}
+
static int handle_apic_access(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
u64 exit_qualification;
@@ -2174,6 +2182,7 @@ static int (*kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu,
[EXIT_REASON_VMCALL] = handle_vmcall,
[EXIT_REASON_TPR_BELOW_THRESHOLD] = handle_tpr_below_threshold,
[EXIT_REASON_APIC_ACCESS] = handle_apic_access,
+ [EXIT_REASON_WBINVD] = handle_wbinvd,
};
static const int kvm_vmx_max_exit_handlers =