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 <[email protected]>
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))
-
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