But don't implement 'loadiwkey' vm-exit handler in this patch, it will be
done in next one.
Signed-off-by: Robert Hoo <robert.hu@xxxxxxxxxxxxxxx>
---
arch/x86/include/asm/vmx.h | 6 ++++++
arch/x86/include/asm/vmxfeatures.h | 3 +++
arch/x86/include/uapi/asm/vmx.h | 5 ++++-
arch/x86/kvm/vmx/vmx.c | 27 +++++++++++++++++++++++++++
4 files changed, 40 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index 1517692..2fe69e9 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -75,6 +75,12 @@
#define SECONDARY_EXEC_TSC_SCALING VMCS_CONTROL_BIT(TSC_SCALING)
#define SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE VMCS_CONTROL_BIT(USR_WAIT_PAUSE)
+/*
+ * Definitions of Tertiary Processor-Based VM-Execution Controls.
+ */
+#define TERTIARY_EXEC_LOADIWKEY_EXITING VMCS_CONTROL_BIT(LOADIWKEY_EXITING)
+
+
#define PIN_BASED_EXT_INTR_MASK VMCS_CONTROL_BIT(INTR_EXITING)
#define PIN_BASED_NMI_EXITING VMCS_CONTROL_BIT(NMI_EXITING)
#define PIN_BASED_VIRTUAL_NMIS VMCS_CONTROL_BIT(VIRTUAL_NMIS)
diff --git a/arch/x86/include/asm/vmxfeatures.h b/arch/x86/include/asm/vmxfeatures.h
index 75a15c2..1d11575 100644
--- a/arch/x86/include/asm/vmxfeatures.h
+++ b/arch/x86/include/asm/vmxfeatures.h
@@ -85,4 +85,7 @@
#define VMX_FEATURE_USR_WAIT_PAUSE ( 2*32+ 26) /* Enable TPAUSE, UMONITOR, UMWAIT in guest */
#define VMX_FEATURE_ENCLV_EXITING ( 2*32+ 28) /* "" VM-Exit on ENCLV (leaf dependent) */
+/* Tertiary Processor-Based VM-Execution Controls, word 3 */
+#define VMX_FEATURE_LOADIWKEY_EXITING (3*32 + 0) /* "" VM-Exit on LOADIWKey */
+
#endif /* _ASM_X86_VMXFEATURES_H */
diff --git a/arch/x86/include/uapi/asm/vmx.h b/arch/x86/include/uapi/asm/vmx.h
index b8ff9e8..9c04550 100644
--- a/arch/x86/include/uapi/asm/vmx.h
+++ b/arch/x86/include/uapi/asm/vmx.h
@@ -88,6 +88,7 @@
#define EXIT_REASON_XRSTORS 64
#define EXIT_REASON_UMWAIT 67
#define EXIT_REASON_TPAUSE 68
+#define EXIT_REASON_LOADIWKEY 69
#define VMX_EXIT_REASONS \
{ EXIT_REASON_EXCEPTION_NMI, "EXCEPTION_NMI" }, \
@@ -148,7 +149,9 @@
{ EXIT_REASON_XSAVES, "XSAVES" }, \
{ EXIT_REASON_XRSTORS, "XRSTORS" }, \
{ EXIT_REASON_UMWAIT, "UMWAIT" }, \
- { EXIT_REASON_TPAUSE, "TPAUSE" }
+ { EXIT_REASON_TPAUSE, "TPAUSE" }, \
+ { EXIT_REASON_LOADIWKEY, "LOADIWKEY" }
+
#define VMX_EXIT_REASON_FLAGS \
{ VMX_EXIT_REASONS_FAILED_VMENTRY, "FAILED_VMENTRY" }
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 12a926e..d01bbb4 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -2368,6 +2368,23 @@ static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,
return 0;
}
+static __init int adjust_vmx_controls_64(u64 ctl_min, u64 ctl_opt,
+ u32 msr, u64 *result)
+{
+ u64 vmx_msr;
+ u64 ctl = ctl_min | ctl_opt;
+
+ rdmsrl(msr, vmx_msr);
+ ctl &= vmx_msr; /* bit == 1 means it can be set */
+
+ /* Ensure minimum (required) set of control bits are supported. */
+ if (ctl_min & ~ctl)
+ return -EIO;
+
+ *result = ctl;
+ return 0;
+}
+
static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
struct vmx_capability *vmx_cap)
{
@@ -2472,6 +2489,16 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
"1-setting enable VPID VM-execution control\n");
}
+ if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_TERTIARY_CONTROLS) {
+ u64 opt3 = TERTIARY_EXEC_LOADIWKEY_EXITING;
+ u64 min3 = 0;
+
+ if (adjust_vmx_controls_64(min3, opt3,
+ MSR_IA32_VMX_PROCBASED_CTLS3,
+ &_cpu_based_3rd_exec_control))
+ return -EIO;
+ }
+
min = VM_EXIT_SAVE_DEBUG_CONTROLS | VM_EXIT_ACK_INTR_ON_EXIT;
#ifdef CONFIG_X86_64
min |= VM_EXIT_HOST_ADDR_SPACE_SIZE;
--
1.8.3.1
