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authorHuang Ying <ying.huang@intel.com>2011-07-13 09:14:20 +0400
committerLen Brown <len.brown@intel.com>2011-07-14 07:38:20 +0400
commiteccddd32ced0df8f9130024157bf8d37df860d76 (patch)
tree6e4372e5096fde4d2ffea12a0b992bef06ad589f /include/linux/acpi.h
parentb6a9501658530d8b8374e37f1edb549039a8a260 (diff)
downloadlinux-eccddd32ced0df8f9130024157bf8d37df860d76.tar.xz
ACPI, APEI, Add APEI bit support in generic _OSC call
In APEI firmware first mode, hardware error is reported by hardware to firmware firstly, then firmware reports the error to Linux in a GHES error record via POLL/SCI/IRQ/NMI etc. This may result in some issues if OS has no full APEI support. So some firmware implementation will work in a back-compatible mode by default. Where firmware will only notify OS in old-fashion, without GHES record. For example, for a fatal hardware error, only NMI is signaled, no GHES record. To gain full APEI power on these machines, APEI bit in generic _OSC call can be specified to tell firmware that Linux has full APEI support. This patch adds the APEI bit support in generic _OSC call. Signed-off-by: Huang Ying <ying.huang@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Reviewed-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/linux/acpi.h')
-rw-r--r--include/linux/acpi.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 1deb2a73c2da..e19527de6a93 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -280,6 +280,8 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
#define OSC_SB_CPUHP_OST_SUPPORT 8
#define OSC_SB_APEI_SUPPORT 16
+extern bool osc_sb_apei_support_acked;
+
/* PCI defined _OSC bits */
/* _OSC DW1 Definition (OS Support Fields) */
#define OSC_EXT_PCI_CONFIG_SUPPORT 1