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mce: acpi/apei: Add a boot option to disable ff mode for corrected errors 

Add a boot option to disable firmware first mode for corrected errors.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Naveen N. Rao 2013-07-01 21:08:54 +05:30 committed by Tony Luck
parent c3d1fb567a
commit 9ad95879cd
4 changed files with 14 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Documentation/x86/x86_64/boot-options.txt
View File

@ -176,6 +176,11 @@ ACPI
acpi=noirq Don't route interrupts
acpi=nocmcff Disable firmware first mode for corrected errors. This
disables parsing the HEST CMC error source to check if
firmware has set the FF flag. This may result in
duplicate corrected error reports.
PCI
pci=off Don't use PCI

2
arch/x86/include/asm/acpi.h
View File

@ -86,6 +86,7 @@ extern int acpi_pci_disabled;
extern int acpi_skip_timer_override;
extern int acpi_use_timer_override;
extern int acpi_fix_pin2_polarity;
extern int acpi_disable_cmcff;
extern u8 acpi_sci_flags;
extern int acpi_sci_override_gsi;
@ -168,6 +169,7 @@ static inline void arch_acpi_set_pdc_bits(u32 *buf)
#define acpi_lapic 0
#define acpi_ioapic 0
#define acpi_disable_cmcff 0
static inline void acpi_noirq_set(void) { }
static inline void acpi_disable_pci(void) { }
static inline void disable_acpi(void) { }

5
arch/x86/kernel/acpi/boot.c
View File

@ -66,6 +66,7 @@ EXPORT_SYMBOL(acpi_pci_disabled);
int acpi_lapic;
int acpi_ioapic;
int acpi_strict;
int acpi_disable_cmcff;
u8 acpi_sci_flags __initdata;
int acpi_sci_override_gsi __initdata;
@ -1619,6 +1620,10 @@ static int __init parse_acpi(char *arg)
/* "acpi=copy_dsdt" copys DSDT */
else if (strcmp(arg, "copy_dsdt") == 0) {
acpi_gbl_copy_dsdt_locally = 1;
}
/* "acpi=nocmcff" disables FF mode for corrected errors */
else if (strcmp(arg, "nocmcff") == 0) {
acpi_disable_cmcff = 1;
} else {
/* Core will printk when we return error. */
return -EINVAL;

3
drivers/acpi/apei/hest.c
View File

@ -262,7 +262,8 @@ void __init acpi_hest_init(void)
goto err;
}
apei_hest_parse(hest_parse_cmc, NULL);
if (!acpi_disable_cmcff)
apei_hest_parse(hest_parse_cmc, NULL);
if (!ghes_disable) {
rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count);