To make it easier to add optimised versions of copy_page, remove
the 4kB loop for 64kB pages and just do all the work in copy_page.
Signed-off-by: Anton Blanchard <an...@samba.org>
---
Index: linux-powerpc/arch/powerpc/include/asm/page_64.h
===================================================================
--- linux-powerpc.orig/arch/powerpc/include/asm/page_64.h 2011-04-24
12:38:26.469653194 +1000
+++ linux-powerpc/arch/powerpc/include/asm/page_64.h 2011-04-24
12:39:27.220773995 +1000
@@ -59,24 +59,7 @@ static __inline__ void clear_page(void *
: "ctr", "memory");
}
-extern void copy_4K_page(void *to, void *from);
-
-#ifdef CONFIG_PPC_64K_PAGES
-static inline void copy_page(void *to, void *from)
-{
- unsigned int i;
- for (i=0; i < (1 << (PAGE_SHIFT - 12)); i++) {
- copy_4K_page(to, from);
- to += 4096;
- from += 4096;
- }
-}
-#else /* CONFIG_PPC_64K_PAGES */
-static inline void copy_page(void *to, void *from)
-{
- copy_4K_page(to, from);
-}
-#endif /* CONFIG_PPC_64K_PAGES */
+extern void copy_page(void *to, void *from);
/* Log 2 of page table size */
extern u64 ppc64_pft_size;
Index: linux-powerpc/arch/powerpc/kernel/ppc_ksyms.c
===================================================================
--- linux-powerpc.orig/arch/powerpc/kernel/ppc_ksyms.c 2011-04-24
12:38:26.489653562 +1000
+++ linux-powerpc/arch/powerpc/kernel/ppc_ksyms.c 2011-04-24
12:39:27.220773995 +1000
@@ -54,7 +54,6 @@ extern void single_step_exception(struct
extern int sys_sigreturn(struct pt_regs *regs);
EXPORT_SYMBOL(clear_pages);
-EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(ISA_DMA_THRESHOLD);
EXPORT_SYMBOL(DMA_MODE_READ);
EXPORT_SYMBOL(DMA_MODE_WRITE);
@@ -88,9 +87,7 @@ EXPORT_SYMBOL(__copy_tofrom_user);
EXPORT_SYMBOL(__clear_user);
EXPORT_SYMBOL(__strncpy_from_user);
EXPORT_SYMBOL(__strnlen_user);
-#ifdef CONFIG_PPC64
-EXPORT_SYMBOL(copy_4K_page);
-#endif
+EXPORT_SYMBOL(copy_page);
#if defined(CONFIG_PCI) && defined(CONFIG_PPC32)
EXPORT_SYMBOL(isa_io_base);
Index: linux-powerpc/arch/powerpc/lib/copypage_64.S
===================================================================
--- linux-powerpc.orig/arch/powerpc/lib/copypage_64.S 2011-04-24
12:38:26.449652824 +1000
+++ linux-powerpc/arch/powerpc/lib/copypage_64.S 2011-04-24
14:28:05.471401998 +1000
@@ -6,6 +6,7 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
+#include <asm/page.h>
#include <asm/processor.h>
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
@@ -15,9 +16,9 @@ PPC64_CACHES:
.tc ppc64_caches[TC],ppc64_caches
.section ".text"
-
-_GLOBAL(copy_4K_page)
- li r5,4096 /* 4K page size */
+_GLOBAL(copy_page)
+ lis r5,PAGE_SIZE@h
+ ori r5,r5,PAGE_SIZE@l
BEGIN_FTR_SECTION
ld r10,PPC64_CACHES@toc(r2)
lwz r11,DCACHEL1LOGLINESIZE(r10) /* log2 of cache line size */
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