This patch introduces a new config called "CONFIG_ACPI_MIRROR_MEMORY", it is used to on/off the feature. Signed-off-by: Xishi Qiu <qiuxishi@xxxxxxxxxx> --- mm/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/mm/Kconfig b/mm/Kconfig index 390214d..4f2a726 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -200,6 +200,14 @@ config MEMORY_HOTREMOVE depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE depends on MIGRATION +config MEMORY_MIRROR + bool "Address range mirroring support" + depends on X86 && NUMA + default y + help + This feature depends on hardware and firmware support. + ACPI or EFI records the mirror info. + # # If we have space for more page flags then we can enable additional # optimizations and functionality. -- 2.0.0 -- 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=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>