This is a note to let you know that I've just added the patch titled
ACPI: Overriding ACPI tables via initrd only works with an initrd and on X86
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-overriding-acpi-tables-via-initrd-only-works-with-an-initrd-and-on-x86.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 565d956a7e191e95d81f515196951715f2616e6b Mon Sep 17 00:00:00 2001
From: Thomas Renninger <[email protected]>
Date: Fri, 22 Feb 2013 14:12:22 +0100
Subject: ACPI: Overriding ACPI tables via initrd only works with an initrd and
on X86
From: Thomas Renninger <[email protected]>
commit 565d956a7e191e95d81f515196951715f2616e6b upstream.
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 <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: H. Peter Anvin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/acpi/Kconfig | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- 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
Patches currently in stable-queue which might be from [email protected] are
queue-3.8/acpi-overriding-acpi-tables-via-initrd-only-works-with-an-initrd-and-on-x86.patch
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