diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2009-04-08 10:31:24 (GMT) |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-05-28 16:24:12 (GMT) |
| commit | 01c6680a547a3ee8dd170c269ea8e037b3191b71 (patch) | |
| tree | d915249ccc33aa6d99d0c1b671a7fbaf219ed4be /arch | |
| parent | ba2d0f2b0c56d7174a0208f7c463271f39040728 (diff) | |
| download | linux-01c6680a547a3ee8dd170c269ea8e037b3191b71.tar.xz | |
x86, mce: Cleanup MCG definitions
Decode more magic constants and turn them into symbols.
[ Sort definitions bitwise, introduce MCG_EXT_CNT - HS ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/mce.h | 10 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 5 |
2 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h index b9972a6..94aedaf 100644 --- a/arch/x86/include/asm/mce.h +++ b/arch/x86/include/asm/mce.h @@ -8,9 +8,13 @@ * Machine Check support for x86 */ -#define MCG_CTL_P (1ULL<<8) /* MCG_CAP register available */ -#define MCG_EXT_P (1ULL<<9) /* Extended registers available */ -#define MCG_CMCI_P (1ULL<<10) /* CMCI supported */ +#define MCG_BANKCNT_MASK 0xff /* Number of Banks */ +#define MCG_CTL_P (1ULL<<8) /* MCG_CAP register available */ +#define MCG_EXT_P (1ULL<<9) /* Extended registers available */ +#define MCG_CMCI_P (1ULL<<10) /* CMCI supported */ +#define MCG_EXT_CNT_MASK 0xff0000 /* Number of Extended registers */ +#define MCG_EXT_CNT_SHIFT 16 +#define MCG_EXT_CNT(c) (((c) & MCG_EXT_CNT_MASK) >> MCG_EXT_CNT_SHIFT) #define MCG_STATUS_RIPV (1ULL<<0) /* restart ip valid */ #define MCG_STATUS_EIPV (1ULL<<1) /* ip points to correct instruction */ diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 49c7422..1473336 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -569,7 +569,8 @@ static int mce_cap_init(void) u64 cap; rdmsrl(MSR_IA32_MCG_CAP, cap); - b = cap & 0xff; + + b = cap & MCG_BANKCNT_MASK; printk(KERN_INFO "mce: CPU supports %d MCE banks\n", b); if (b > MAX_NR_BANKS) { @@ -590,7 +591,7 @@ static int mce_cap_init(void) } /* Use accurate RIP reporting if available. */ - if ((cap & (1<<9)) && ((cap >> 16) & 0xff) >= 9) + if ((cap & MCG_EXT_P) && MCG_EXT_CNT(cap) >= 9) rip_msr = MSR_IA32_MCG_EIP; return 0; |