* [PATCH] unify pfn_to_page take 2 [10/25] h8300 funcs
@ 2006-02-08 6:00 KAMEZAWA Hiroyuki
0 siblings, 0 replies; only message in thread
From: KAMEZAWA Hiroyuki @ 2006-02-08 6:00 UTC (permalink / raw)
To: Linux Kernel Mailing List; +Cc: ysato
Looks complicated..
ex) page_to_pfn()
(((page - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) >> PAGE_SHIFT
is same to
(page - mem_map) + (PAGE_OFFSET >> PAGE_SHIFT)
H8300 can use generic ones.
Signed-Off-By: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Index: test-layout-free-zone/include/asm-h8300/page.h
===================================================================
--- test-layout-free-zone.orig/include/asm-h8300/page.h
+++ test-layout-free-zone/include/asm-h8300/page.h
@@ -71,8 +71,7 @@ extern unsigned long memory_end;
#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
#define pfn_valid(page) (page < max_mapnr)
-#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
-#define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
+#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
((void *)(kaddr) < (void *)memory_end))
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2006-02-08 5:59 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2006-02-08 6:00 [PATCH] unify pfn_to_page take 2 [10/25] h8300 funcs KAMEZAWA Hiroyuki
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.