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>
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@@ -280,6 +280,8 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
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#define OSC_SB_CPUHP_OST_SUPPORT 8
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#define OSC_SB_APEI_SUPPORT 16
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extern bool osc_sb_apei_support_acked;
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/* PCI defined _OSC bits */
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/* _OSC DW1 Definition (OS Support Fields) */
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#define OSC_EXT_PCI_CONFIG_SUPPORT 1
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