[PATCH v13 03/35] x86/trapnr: Add event type macros to <asm/trapnr.h>

[Xin Li <xin3.li@xxxxxxxxx>]

Intel VT-x classifies events into eight different types, which is
inherited by FRED for event identification. As such, event type
becomes a common x86 concept, and should be defined in a common x86
header.

Add event type macros to <asm/trapnr.h>, and use it in <asm/vmx.h>.

Suggested-by: H. Peter Anvin (Intel) <hpa@xxxxxxxxx>
Tested-by: Shan Kang <shan.kang@xxxxxxxxx>
Signed-off-by: Xin Li <xin3.li@xxxxxxxxx>
---

Changes since v10:
* A few comment fixes and improvements (Andrew Cooper).
---
 arch/x86/include/asm/trapnr.h | 12 ++++++++++++
 arch/x86/include/asm/vmx.h    | 17 +++++++++--------
 2 files changed, 21 insertions(+), 8 deletions(-)

diff --git a/arch/x86/include/asm/trapnr.h b/arch/x86/include/asm/trapnr.h
index f5d2325aa0b7..8d1154cdf787 100644
--- a/arch/x86/include/asm/trapnr.h
+++ b/arch/x86/include/asm/trapnr.h
@@ -2,6 +2,18 @@
 #ifndef _ASM_X86_TRAPNR_H
 #define _ASM_X86_TRAPNR_H
 
+/*
+ * Event type codes used by FRED, Intel VT-x and AMD SVM
+ */
+#define EVENT_TYPE_EXTINT      0       // External interrupt
+#define EVENT_TYPE_RESERVED    1
+#define EVENT_TYPE_NMI         2       // NMI
+#define EVENT_TYPE_HWEXC       3       // Hardware originated traps, exceptions
+#define EVENT_TYPE_SWINT       4       // INT n
+#define EVENT_TYPE_PRIV_SWEXC  5       // INT1
+#define EVENT_TYPE_SWEXC       6       // INTO, INT3
+#define EVENT_TYPE_OTHER       7       // FRED SYSCALL/SYSENTER, VT-x MTF
+
 /* Interrupts/Exceptions */
 
 #define X86_TRAP_DE             0      /* Divide-by-zero */
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index 0e73616b82f3..4dba17363008 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -17,6 +17,7 @@
 #include <linux/types.h>
 
 #include <uapi/asm/vmx.h>
+#include <asm/trapnr.h>
 #include <asm/vmxfeatures.h>
 
 #define VMCS_CONTROL_BIT(x)    BIT(VMX_FEATURE_##x & 0x1f)
@@ -374,14 +375,14 @@ enum vmcs_field {
 #define VECTORING_INFO_DELIVER_CODE_MASK       INTR_INFO_DELIVER_CODE_MASK
 #define VECTORING_INFO_VALID_MASK              INTR_INFO_VALID_MASK
 
-#define INTR_TYPE_EXT_INTR              (0 << 8) /* external interrupt */
-#define INTR_TYPE_RESERVED              (1 << 8) /* reserved */
-#define INTR_TYPE_NMI_INTR             (2 << 8) /* NMI */
-#define INTR_TYPE_HARD_EXCEPTION       (3 << 8) /* processor exception */
-#define INTR_TYPE_SOFT_INTR             (4 << 8) /* software interrupt */
-#define INTR_TYPE_PRIV_SW_EXCEPTION    (5 << 8) /* ICE breakpoint - 
undocumented */
-#define INTR_TYPE_SOFT_EXCEPTION       (6 << 8) /* software exception */
-#define INTR_TYPE_OTHER_EVENT           (7 << 8) /* other event */
+#define INTR_TYPE_EXT_INTR             (EVENT_TYPE_EXTINT << 8)        /* 
external interrupt */
+#define INTR_TYPE_RESERVED             (EVENT_TYPE_RESERVED << 8)      /* 
reserved */
+#define INTR_TYPE_NMI_INTR             (EVENT_TYPE_NMI << 8)           /* NMI 
*/
+#define INTR_TYPE_HARD_EXCEPTION       (EVENT_TYPE_HWEXC << 8)         /* 
processor exception */
+#define INTR_TYPE_SOFT_INTR            (EVENT_TYPE_SWINT << 8)         /* 
software interrupt */
+#define INTR_TYPE_PRIV_SW_EXCEPTION    (EVENT_TYPE_PRIV_SWEXC << 8)    /* ICE 
breakpoint */
+#define INTR_TYPE_SOFT_EXCEPTION       (EVENT_TYPE_SWEXC << 8)         /* 
software exception */
+#define INTR_TYPE_OTHER_EVENT          (EVENT_TYPE_OTHER << 8)         /* 
other event */
 
 /* GUEST_INTERRUPTIBILITY_INFO flags. */
 #define GUEST_INTR_STATE_STI           0x00000001
-- 
2.43.0