x86: debugctlmsr constants

This adds constant macros for a few of the bits in MSR_IA32_DEBUGCTLMSR.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/include/asm-x86/msr-index.h b/include/asm-x86/msr-index.h
index a494473..4045bbe 100644 (file)
--- a/include/asm-x86/msr-index.h
+++ b/include/asm-x86/msr-index.h
@@ -63,6 +63,13 @@
 #define MSR_IA32_LASTINTFROMIP         0x000001dd
 #define MSR_IA32_LASTINTTOIP           0x000001de
 
+/* DEBUGCTLMSR bits (others vary by model): */
+#define _DEBUGCTLMSR_LBR       0 /* last branch recording */
+#define _DEBUGCTLMSR_BTF       1 /* single-step on branches */
+
+#define DEBUGCTLMSR_LBR                (1UL << _DEBUGCTLMSR_LBR)
+#define DEBUGCTLMSR_BTF                (1UL << _DEBUGCTLMSR_BTF)
+
 #define MSR_IA32_MC0_CTL               0x00000400
 #define MSR_IA32_MC0_STATUS            0x00000401
 #define MSR_IA32_MC0_ADDR              0x00000402