x86, mce, cmci: define MSR names and fields for new CMCI registers

Impact: New register definitions only

CMCI means support for raising an interrupt on a corrected machine
check event instead of having to poll for it. It's a new feature in
Intel Nehalem CPUs available on some machine check banks.

For details see the IA32 SDM Vol3a 14.5

Define the registers for it as a preparation for further patches.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/arch/x86/include/asm/apicdef.h b/arch/x86/include/asm/apicdef.h
index 63134e3..bc9514f 100644 (file)
--- a/arch/x86/include/asm/apicdef.h
+++ b/arch/x86/include/asm/apicdef.h
@@ -53,6 +53,7 @@
 #define                APIC_ESR_SENDILL        0x00020
 #define                APIC_ESR_RECVILL        0x00040
 #define                APIC_ESR_ILLREGA        0x00080
+#define        APIC_LVTCMCI    0x2f0
 #define        APIC_ICR        0x300
 #define                APIC_DEST_SELF          0x40000
 #define                APIC_DEST_ALLINC        0x80000

diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 9b95236..6fc5e07 100644 (file)
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -11,6 +11,8 @@
  */
 
 #define MCG_CTL_P       (1UL<<8)   /* MCG_CAP register available */
+#define MCG_EXT_P       (1ULL<<9)   /* Extended registers available */
+#define MCG_CMCI_P      (1ULL<<10)  /* CMCI supported */
 
 #define MCG_STATUS_RIPV  (1UL<<0)   /* restart ip valid */
 #define MCG_STATUS_EIPV  (1UL<<1)   /* ip points to correct instruction */

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 358acc5..2dbd231 100644 (file)
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -77,6 +77,11 @@
 #define MSR_IA32_MC0_ADDR              0x00000402
 #define MSR_IA32_MC0_MISC              0x00000403
 
+/* These are consecutive and not in the normal 4er MCE bank block */
+#define MSR_IA32_MC0_CTL2              0x00000280
+#define CMCI_EN                        (1ULL << 30)
+#define CMCI_THRESHOLD_MASK            0xffffULL
+
 #define MSR_P6_PERFCTR0                        0x000000c1
 #define MSR_P6_PERFCTR1                        0x000000c2
 #define MSR_P6_EVNTSEL0                        0x00000186