repository: /home/avi/kvm/linux-2.6
branch: master
commit 495dcb4309e309d9ec42dc471b1548c09a359ed8
Author: Eddie Dong <[EMAIL PROTECTED]>
Date: Sun Nov 11 12:28:35 2007 +0200
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 <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index 1166132..0f48d23 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -972,7 +972,8 @@ 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;
@@ -2119,6 +2120,13 @@ 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;
@@ -2160,6 +2168,7 @@ 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 =
diff --git a/drivers/kvm/vmx.h b/drivers/kvm/vmx.h
index 6d32bc6..d52ae8d 100644
--- a/drivers/kvm/vmx.h
+++ b/drivers/kvm/vmx.h
@@ -49,6 +49,7 @@
* Definitions of Secondary Processor-Based VM-Execution Controls.
*/
#define SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES 0x00000001
+#define SECONDARY_EXEC_WBINVD_EXITING 0x00000040
#define PIN_BASED_EXT_INTR_MASK 0x00000001
@@ -223,6 +224,7 @@ enum vmcs_field {
#define EXIT_REASON_MWAIT_INSTRUCTION 36
#define EXIT_REASON_TPR_BELOW_THRESHOLD 43
#define EXIT_REASON_APIC_ACCESS 44
+#define EXIT_REASON_WBINVD 54
/*
* Interruption-information format
-------------------------------------------------------------------------
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