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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-14 22:03:23 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-14 22:03:23 +0400 |
commit | 18dd0bf22b6f0c1bd5e4e813a42245ed86ec57b6 (patch) | |
tree | a4794b6041b44fa94f5d9438cdb5bbfc58b35f05 /arch | |
parent | 2d9c8b5d6a5f5f7a6111cc68a050b5b44729376b (diff) | |
parent | 385ddeac7ed99cf7dc62d76274d55fbd7cae1b5a (diff) | |
download | linux-18dd0bf22b6f0c1bd5e4e813a42245ed86ec57b6.tar.xz |
Merge branch 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 ACPI update from Peter Anvin:
"This is a patchset which didn't make the last merge window. It adds a
debugging capability to feed ACPI tables via the initramfs.
On a grander scope, it formalizes using the initramfs protocol for
feeding arbitrary blobs which need to be accessed early to the kernel:
they are fed first in the initramfs blob (lots of bootloaders can
concatenate this at boot time, others can use a single file) in an
uncompressed cpio archive using filenames starting with "kernel/".
The ACPI maintainers requested that this patchset be fed via the x86
tree rather than the ACPI tree as the footprint in the general x86
code is much bigger than in the ACPI code proper."
* 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
X86 ACPI: Use #ifdef not #if for CONFIG_X86 check
ACPI: Fix build when disabled
ACPI: Document ACPI table overriding via initrd
ACPI: Create acpi_table_taint() function to avoid code duplication
ACPI: Implement physical address table override
ACPI: Store valid ACPI tables passed via early initrd in reserved memblock areas
x86, acpi: Introduce x86 arch specific arch_reserve_mem_area() for e820 handling
lib: Add early cpio decoder
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/kernel/acpi/boot.c | 6 | ||||
-rw-r--r-- | arch/x86/kernel/setup.c | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index e48cafcf92ae..bacf4b0d91f4 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -1706,3 +1706,9 @@ int __acpi_release_global_lock(unsigned int *lock) } while (unlikely (val != old)); return old & 0x1; } + +void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size) +{ + e820_add_region(addr, size, E820_ACPI); + update_e820(); +} diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index c228322ca180..23ddd558fbd5 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -952,6 +952,10 @@ void __init setup_arch(char **cmdline_p) reserve_initrd(); +#if defined(CONFIG_ACPI) && defined(CONFIG_BLK_DEV_INITRD) + acpi_initrd_override((void *)initrd_start, initrd_end - initrd_start); +#endif + reserve_crashkernel(); vsmp_init(); |