From 565d956a7e191e95d81f515196951715f2616e6b Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Fri, 22 Feb 2013 14:12:22 +0100 Subject: [PATCH] ACPI: Overriding ACPI tables via initrd only works with an initrd and on X86 Reflect this dependency in Kconfig, to prevent build failures. Shorten the config description as suggested by Borislav Petkov. Finding a suitable memory area to store the modified table(s) has been taken over from arch/x86/kernel/setup.c and makes use of max_low_pfn_mapped: memblock_find_in_range(0, max_low_pfn_mapped,...) This one is X86 specific. It may not be hard to extend this functionality for other ACPI aware architectures if there is need for. For now make this feature only available for X86 to avoid build failures on IA64, compare with: https://bugzilla.kernel.org/show_bug.cgi?id=54091 Signed-off-by: Thomas Renninger Link: http://lkml.kernel.org/r/1361538742-67599-3-git-send-email-trenn@suse.de Signed-off-by: H. Peter Anvin --- drivers/acpi/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 38c5078da11d..f5ae996dc9b1 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -268,7 +268,8 @@ config ACPI_CUSTOM_DSDT default ACPI_CUSTOM_DSDT_FILE != "" config ACPI_INITRD_TABLE_OVERRIDE - bool "ACPI tables can be passed via uncompressed cpio in initrd" + bool "ACPI tables override via initrd" + depends on BLK_DEV_INITRD && X86 default n help This option provides functionality to override arbitrary ACPI tables