Commit f5a1c81e authored Jan 10, 2014 by Mark Salter Committed by Joonwoo Park Aug 15, 2014

efi: create memory map iteration helper



There are a lot of places in the kernel which iterate through an
EFI memory map. Most of these places use essentially the same
for-loop code. This patch adds a for_each_efi_memory_desc()
helper to clean up all of the existing duplicate code and avoid
more in the future.

Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Git-commit: e885cd805fc6e65ef5150a211c7bac02f925af04
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>

parent 4c011fbf

include/linux/efi.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -599,6 +599,12 @@ extern int efi_set_rtc_mmss(unsigned long nowtime);
		extern void efi_reserve_boot_services(void);
		extern struct efi_memory_map memmap;

		/* Iterate through an efi_memory_map */
		#define for_each_efi_memory_desc(m, md) \
		for ((md) = (m)->map; \
		(md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
		(md) = (void *)(md) + (m)->desc_size)

		/**
		* efi_range_is_wc - check the WC bit on an address range
		* @start: starting kvirt address