diff options
| author | Tyler Baicar <tbaicar@codeaurora.org> | 2017-06-21 21:17:09 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-06-22 20:22:03 +0300 |
| commit | 7edda0886bc3d1e5418951558a2555af1bc73b0a (patch) | |
| tree | 1667db61f5bb8f8cd3bf87c7fb1cc68d11224597 /drivers/acpi/apei/Kconfig | |
| parent | 32015c235603a209697d1228667b1fb1cc8a8d06 (diff) | |
| download | linux-7edda0886bc3d1e5418951558a2555af1bc73b0a.tar.xz | |
acpi: apei: handle SEA notification type for ARMv8
ARM APEI extension proposal added SEA (Synchronous External Abort)
notification type for ARMv8.
Add a new GHES error source handling function for SEA. If an error
source's notification type is SEA, then this function can be registered
into the SEA exception handler. That way GHES will parse and report
SEA exceptions when they occur.
An SEA can interrupt code that had interrupts masked and is treated as
an NMI. To aid this the page of address space for mapping APEI buffers
while in_nmi() is always reserved, and ghes_ioremap_pfn_nmi() is
changed to use the helper methods to find the prot_t to map with in
the same way as ghes_ioremap_pfn_irq().
Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
CC: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
Reviewed-by: James Morse <james.morse@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/acpi/apei/Kconfig')
| -rw-r--r-- | drivers/acpi/apei/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig index b0140c8fc733..de14d49a5c90 100644 --- a/drivers/acpi/apei/Kconfig +++ b/drivers/acpi/apei/Kconfig @@ -39,6 +39,21 @@ config ACPI_APEI_PCIEAER PCIe AER errors may be reported via APEI firmware first mode. Turn on this option to enable the corresponding support. +config ACPI_APEI_SEA + bool "APEI Synchronous External Abort logging/recovering support" + depends on ARM64 && ACPI_APEI_GHES + default y + help + This option should be enabled if the system supports + firmware first handling of SEA (Synchronous External Abort). + SEA happens with certain faults of data abort or instruction + abort synchronous exceptions on ARMv8 systems. If a system + supports firmware first handling of SEA, the platform analyzes + and handles hardware error notifications from SEA, and it may then + form a HW error record for the OS to parse and handle. This + option allows the OS to look for such hardware error record, and + take appropriate action. + config ACPI_APEI_MEMORY_FAILURE bool "APEI memory error recovering support" depends on ACPI_APEI && MEMORY_FAILURE |