#define HV_X64_MSR_STIMER3_CONFIG              0x400000B6
 #define HV_X64_MSR_STIMER3_COUNT               0x400000B7
 
+/* Hyper-V guest crash notification MSR's */
+#define HV_X64_MSR_CRASH_P0                    0x40000100
+#define HV_X64_MSR_CRASH_P1                    0x40000101
+#define HV_X64_MSR_CRASH_P2                    0x40000102
+#define HV_X64_MSR_CRASH_P3                    0x40000103
+#define HV_X64_MSR_CRASH_P4                    0x40000104
+#define HV_X64_MSR_CRASH_CTL                   0x40000105
+#define HV_X64_MSR_CRASH_CTL_NOTIFY            (1ULL << 63)
+#define HV_X64_MSR_CRASH_PARAMS                \
+               (1 + (HV_X64_MSR_CRASH_P4 - HV_X64_MSR_CRASH_P0))
+
 #define HV_X64_MSR_HYPERCALL_ENABLE            0x00000001
 #define HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT        12
 #define HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_MASK \