diff options
| author | Thomas Renninger <trenn@suse.de> | 2012-10-01 02:23:53 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-10-01 05:03:13 +0400 |
| commit | 8e30524dcc0d0ac1a18a5cee482b9d9cde3cb332 (patch) | |
| tree | ad5e19dfd62d9ebf0e4ce61b6947e53df1bc4d00 /include | |
| parent | e6459606b04e6385ccd3c2060fc10f78a92c7700 (diff) | |
| download | linux-8e30524dcc0d0ac1a18a5cee482b9d9cde3cb332.tar.xz | |
x86, acpi: Introduce x86 arch specific arch_reserve_mem_area() for e820 handling
This is needed for ACPI table overriding via initrd. Beside reserving
memblocks, X86 also requires to flag the memory area to E820_RESERVED or
E820_ACPI in the e820 mappings to be able to io(re)map it later.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Link: http://lkml.kernel.org/r/1349043837-22659-3-git-send-email-trenn@suse.de
Cc: Len Brown <lenb@kernel.org>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/acpi.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 4f2a76224509..946fd1ea79ff 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -426,6 +426,14 @@ void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, acpi_status acpi_os_prepare_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control); +#if CONFIG_X86 +void arch_reserve_mem_area(acpi_physical_address addr, size_t size); +#else +static inline void arch_reserve_mem_area(acpi_physical_address addr, + size_t size) +{ +} +#endif /* CONFIG_X86 */ #else #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0) #endif |