Here's an updated patch. # Randy, I dropped your Ack because there's a major change on this version. # Would you mind looking at it, please? --- next-20150515 fails to build on i386 with the following error: mm/built-in.o: In function `action_result': memory-failure.c:(.text+0x344a5): undefined reference to `__tracepoint_memory_failure_event' memory-failure.c:(.text+0x344d5): undefined reference to `__tracepoint_memory_failure_event' memory-failure.c:(.text+0x3450c): undefined reference to `__tracepoint_memory_failure_event' The root cause of this error is the lack of dependency between CONFIG_RAS and CONFIG_MEMORY_FAILURE. "CONFIG_RAS=n and CONFIG_MEMORY_FAILURE=y" can happen on 32-bit systems with CONFIG_SPARSEMEM=n (and all other dependencies of CONFIG_RAS from ACPI_EXTLOG/ PCIEAER/EDAC are false), but that's not supposed to happen. Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Reported-by: Jim Davis <jim.epost@xxxxxxxxx> Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> --- mm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/Kconfig b/mm/Kconfig index 52ffb863383c..e79de2bd12cd 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -368,6 +368,7 @@ config MEMORY_FAILURE depends on ARCH_SUPPORTS_MEMORY_FAILURE bool "Enable recovery from hardware memory errors" select MEMORY_ISOLATION + select RAS help Enables code to recover from some memory failures on systems with MCA recovery. This allows a system to continue running -- 2.1.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href