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x86, MCA: Finish mca_config conversion

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mce_ser, mce_bios_cmci_threshold and mce_disabled are the last three
bools which need conversion. Move them to the mca_config struct and
adjust usage sites accordingly.

Signed-off-by: Borislav Petkov <bp@alien8.de>
Acked-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Borislav Petkov 2012-10-17 12:05:33 +02:00
parent 7af19e4afd
commit 1462594bf2
6 changed files with 25 additions and 30 deletions
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5
arch/x86/include/asm/mce.h
View File

@ -124,6 +124,9 @@ struct mca_config {
bool dont_log_ce;
bool cmci_disabled;
bool ignore_ce;
bool disabled;
bool ser;
bool bios_cmci_threshold;
u8 banks;
s8 bootlog;
int tolerant;
@ -140,7 +143,6 @@ extern void mce_unregister_decode_chain(struct notifier_block *nb);
#include <linux/init.h>
#include <linux/atomic.h>
extern int mce_disabled;
extern int mce_p5_enabled;
#ifdef CONFIG_X86_MCE
@ -173,7 +175,6 @@ DECLARE_PER_CPU(struct device *, mce_device);
#define MAX_NR_BANKS 32
#ifdef CONFIG_X86_MCE_INTEL
extern int mce_bios_cmci_threshold;
void mce_intel_feature_init(struct cpuinfo_x86 *c);
void cmci_clear(void);
void cmci_reenable(void);

2
arch/x86/kernel/cpu/mcheck/mce-internal.h
View File

@ -24,8 +24,6 @@ struct mce_bank {
int mce_severity(struct mce *a, int tolerant, char **msg);
struct dentry *mce_get_debugfs_dir(void);
extern int mce_ser;
extern struct mce_bank *mce_banks;
#ifdef CONFIG_X86_MCE_INTEL

4
arch/x86/kernel/cpu/mcheck/mce-severity.c
View File

@ -193,9 +193,9 @@ int mce_severity(struct mce *m, int tolerant, char **msg)
continue;
if ((m->mcgstatus & s->mcgmask) != s->mcgres)
continue;
if (s->ser == SER_REQUIRED && !mce_ser)
if (s->ser == SER_REQUIRED && !mca_cfg.ser)
continue;
if (s->ser == NO_SER && mce_ser)
if (s->ser == NO_SER && mca_cfg.ser)
continue;
if (s->context && ctx != s->context)
continue;

36
arch/x86/kernel/cpu/mcheck/mce.c
View File

@ -58,18 +58,13 @@ static DEFINE_MUTEX(mce_chrdev_read_mutex);
#define CREATE_TRACE_POINTS
#include <trace/events/mce.h>
int mce_disabled __read_mostly;
#define SPINUNIT 100 /* 100ns */
atomic_t mce_entry;
DEFINE_PER_CPU(unsigned, mce_exception_count);
int mce_ser __read_mostly;
int mce_bios_cmci_threshold __read_mostly;
struct mce_bank *mce_banks __read_mostly;
struct mce_bank *mce_banks __read_mostly;
struct mca_config mca_cfg __read_mostly = {
.bootlog = -1,
@ -510,7 +505,7 @@ static int mce_ring_add(unsigned long pfn)
int mce_available(struct cpuinfo_x86 *c)
{
if (mce_disabled)
if (mca_cfg.disabled)
return 0;
return cpu_has(c, X86_FEATURE_MCE) && cpu_has(c, X86_FEATURE_MCA);
}
@ -562,7 +557,7 @@ static void mce_read_aux(struct mce *m, int i)
/*
* Mask the reported address by the reported granularity.
*/
if (mce_ser && (m->status & MCI_STATUS_MISCV)) {
if (mca_cfg.ser && (m->status & MCI_STATUS_MISCV)) {
u8 shift = MCI_MISC_ADDR_LSB(m->misc);
m->addr >>= shift;
m->addr <<= shift;
@ -617,7 +612,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
* TBD do the same check for MCI_STATUS_EN here?
*/
if (!(flags & MCP_UC) &&
(m.status & (mce_ser ? MCI_STATUS_S : MCI_STATUS_UC)))
(m.status & (mca_cfg.ser ? MCI_STATUS_S : MCI_STATUS_UC)))
continue;
mce_read_aux(&m, i);
@ -1009,6 +1004,7 @@ static void mce_clear_info(struct mce_info *mi)
*/
void do_machine_check(struct pt_regs *regs, long error_code)
{
struct mca_config *cfg = &mca_cfg;
struct mce m, *final;
int i;
int worst = 0;
@ -1036,7 +1032,7 @@ void do_machine_check(struct pt_regs *regs, long error_code)
this_cpu_inc(mce_exception_count);
if (!mca_cfg.banks)
if (!cfg->banks)
goto out;
mce_gather_info(&m, regs);
@ -1063,7 +1059,7 @@ void do_machine_check(struct pt_regs *regs, long error_code)
* because the first one to see it will clear it.
*/
order = mce_start(&no_way_out);
for (i = 0; i < mca_cfg.banks; i++) {
for (i = 0; i < cfg->banks; i++) {
__clear_bit(i, toclear);
if (!test_bit(i, valid_banks))
continue;
@ -1082,7 +1078,7 @@ void do_machine_check(struct pt_regs *regs, long error_code)
* Non uncorrected or non signaled errors are handled by
* machine_check_poll. Leave them alone, unless this panics.
*/
if (!(m.status & (mce_ser ? MCI_STATUS_S : MCI_STATUS_UC)) &&
if (!(m.status & (cfg->ser ? MCI_STATUS_S : MCI_STATUS_UC)) &&
!no_way_out)
continue;
@ -1091,7 +1087,7 @@ void do_machine_check(struct pt_regs *regs, long error_code)
*/
add_taint(TAINT_MACHINE_CHECK);
severity = mce_severity(&m, mca_cfg.tolerant, NULL);
severity = mce_severity(&m, cfg->tolerant, NULL);
/*
* When machine check was for corrected handler don't touch,
@ -1147,7 +1143,7 @@ void do_machine_check(struct pt_regs *regs, long error_code)
* issues we try to recover, or limit damage to the current
* process.
*/
if (mca_cfg.tolerant < 3) {
if (cfg->tolerant < 3) {
if (no_way_out)
mce_panic("Fatal machine check on current CPU", &m, msg);
if (worst == MCE_AR_SEVERITY) {
@ -1426,7 +1422,7 @@ static int __cpuinit __mcheck_cpu_cap_init(void)
mca_cfg.rip_msr = MSR_IA32_MCG_EIP;
if (cap & MCG_SER_P)
mce_ser = 1;
mca_cfg.ser = true;
return 0;
}
@ -1675,7 +1671,7 @@ void (*machine_check_vector)(struct pt_regs *, long error_code) =
*/
void __cpuinit mcheck_cpu_init(struct cpuinfo_x86 *c)
{
if (mce_disabled)
if (mca_cfg.disabled)
return;
if (__mcheck_cpu_ancient_init(c))
@ -1685,7 +1681,7 @@ void __cpuinit mcheck_cpu_init(struct cpuinfo_x86 *c)
return;
if (__mcheck_cpu_cap_init() < 0 || __mcheck_cpu_apply_quirks(c) < 0) {
mce_disabled = 1;
mca_cfg.disabled = true;
return;
}
@ -1967,7 +1963,7 @@ static int __init mcheck_enable(char *str)
if (*str == '=')
str++;
if (!strcmp(str, "off"))
mce_disabled = 1;
cfg->disabled = true;
else if (!strcmp(str, "no_cmci"))
cfg->cmci_disabled = true;
else if (!strcmp(str, "dont_log_ce"))
@ -1977,7 +1973,7 @@ static int __init mcheck_enable(char *str)
else if (!strcmp(str, "bootlog") || !strcmp(str, "nobootlog"))
cfg->bootlog = (str[0] == 'b');
else if (!strcmp(str, "bios_cmci_threshold"))
mce_bios_cmci_threshold = 1;
cfg->bios_cmci_threshold = true;
else if (isdigit(str[0])) {
get_option(&str, &(cfg->tolerant));
if (*str == ',') {
@ -2435,7 +2431,7 @@ device_initcall_sync(mcheck_init_device);
*/
static int __init mcheck_disable(char *str)
{
mce_disabled = 1;
mca_cfg.disabled = true;
return 1;
}
__setup("nomce", mcheck_disable);

6
arch/x86/kernel/cpu/mcheck/mce_intel.c
View File

@ -200,7 +200,7 @@ static void cmci_discover(int banks)
continue;
}
if (!mce_bios_cmci_threshold) {
if (!mca_cfg.bios_cmci_threshold) {
val &= ~MCI_CTL2_CMCI_THRESHOLD_MASK;
val |= CMCI_THRESHOLD;
} else if (!(val & MCI_CTL2_CMCI_THRESHOLD_MASK)) {
@ -227,7 +227,7 @@ static void cmci_discover(int banks)
* set the thresholds properly or does not work with
* this boot option. Note down now and report later.
*/
if (mce_bios_cmci_threshold && bios_zero_thresh &&
if (mca_cfg.bios_cmci_threshold && bios_zero_thresh &&
(val & MCI_CTL2_CMCI_THRESHOLD_MASK))
bios_wrong_thresh = 1;
} else {
@ -235,7 +235,7 @@ static void cmci_discover(int banks)
}
}
raw_spin_unlock_irqrestore(&cmci_discover_lock, flags);
if (mce_bios_cmci_threshold && bios_wrong_thresh) {
if (mca_cfg.bios_cmci_threshold && bios_wrong_thresh) {
pr_info_once(
"bios_cmci_threshold: Some banks do not have valid thresholds set\n");
pr_info_once(

2
arch/x86/lguest/boot.c
View File

@ -1412,7 +1412,7 @@ __init void lguest_init(void)
/* We don't have features. We have puppies! Puppies! */
#ifdef CONFIG_X86_MCE
mce_disabled = 1;
mca_cfg.disabled = true;
#endif
#ifdef CONFIG_ACPI
acpi_disabled = 1;