diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/mce.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 19 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce_intel_64.c | 3 |
3 files changed, 22 insertions, 2 deletions
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h index 82978ad1207..540a466e50f 100644 --- a/arch/x86/include/asm/mce.h +++ b/arch/x86/include/asm/mce.h @@ -119,6 +119,8 @@ extern void (*threshold_cpu_callback)(unsigned long action, unsigned int cpu); #define MAX_NR_BANKS (MCE_EXTENDED_BANK - 1) #ifdef CONFIG_X86_MCE_INTEL +extern int mce_cmci_disabled; +extern int mce_ignore_ce; void mce_intel_feature_init(struct cpuinfo_x86 *c); void cmci_clear(void); void cmci_reenable(void); diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 6a3127ecb5c..fabba15e455 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -84,6 +84,9 @@ static int rip_msr; static int mce_bootlog = -1; static int monarch_timeout = -1; static int mce_panic_timeout; +static int mce_dont_log_ce; +int mce_cmci_disabled; +int mce_ignore_ce; int mce_ser; static char trigger[128]; @@ -526,7 +529,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b) * Don't get the IP here because it's unlikely to * have anything to do with the actual error location. */ - if (!(flags & MCP_DONTLOG)) { + if (!(flags & MCP_DONTLOG) && !mce_dont_log_ce) { mce_log(&m); add_taint(TAINT_MACHINE_CHECK); } @@ -1307,6 +1310,9 @@ static void mce_init_timer(void) struct timer_list *t = &__get_cpu_var(mce_timer); int *n = &__get_cpu_var(next_interval); + if (mce_ignore_ce) + return; + *n = check_interval * HZ; if (!*n) return; @@ -1517,7 +1523,10 @@ static struct miscdevice mce_log_device = { }; /* - * mce=off disables machine check + * mce=off Disables machine check + * mce=no_cmci Disables CMCI + * mce=dont_log_ce Clears corrected events silently, no log created for CEs. + * mce=ignore_ce Disables polling and CMCI, corrected events are not cleared. * mce=TOLERANCELEVEL[,monarchtimeout] (number, see above) * monarchtimeout is how long to wait for other CPUs on machine * check, or 0 to not wait @@ -1532,6 +1541,12 @@ static int __init mcheck_enable(char *str) str++; if (!strcmp(str, "off")) mce_disabled = 1; + else if (!strcmp(str, "no_cmci")) + mce_cmci_disabled = 1; + else if (!strcmp(str, "dont_log_ce")) + mce_dont_log_ce = 1; + else if (!strcmp(str, "ignore_ce")) + mce_ignore_ce = 1; else if (!strcmp(str, "bootlog") || !strcmp(str, "nobootlog")) mce_bootlog = (str[0] == 'b'); else if (isdigit(str[0])) { diff --git a/arch/x86/kernel/cpu/mcheck/mce_intel_64.c b/arch/x86/kernel/cpu/mcheck/mce_intel_64.c index b7c5a2470b4..046087e9808 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_intel_64.c +++ b/arch/x86/kernel/cpu/mcheck/mce_intel_64.c @@ -57,6 +57,9 @@ static int cmci_supported(int *banks) { u64 cap; + if (mce_cmci_disabled || mce_ignore_ce) + return 0; + /* * Vendor check is not strictly needed, but the initial * initialization is vendor keyed and this |