提交 565d956a 编写于 作者: T Thomas Renninger 提交者: H. Peter Anvin

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=54091Signed-off-by: NThomas Renninger <trenn@suse.de>
Link: http://lkml.kernel.org/r/1361538742-67599-3-git-send-email-trenn@suse.deSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>
上级 a8aed3e0
......@@ -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
......
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