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Commit 555f4fdb authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/kconfig: define PAGE_SHIFT inside Kconfig 



This patch defined CONFIG_PPC_PAGE_SHIFT in order
to be able to use PAGE_SHIFT value inside Kconfig.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 28ea38b9

arch/powerpc/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -704,6 +704,13 @@ config PPC_256K_PAGES 


endchoice



config PPC_PAGE_SHIFT

	int

	default 18 if PPC_256K_PAGES

	default 16 if PPC_64K_PAGES

	default 14 if PPC_16K_PAGES

	default 12



config THREAD_SHIFT

	int "Thread shift" if EXPERT

	range 13 15

arch/powerpc/include/asm/page.h

+2 −11
Original line number Diff line number Diff line
@@ -20,20 +20,11 @@ 


/*

 * On regular PPC32 page size is 4K (but we support 4K/16K/64K/256K pages

 * on PPC44x). For PPC64 we support either 4K or 64K software

 * on PPC44x and 4K/16K on 8xx). For PPC64 we support either 4K or 64K software

 * page size. When using 64K pages however, whether we are really supporting

 * 64K pages in HW or not is irrelevant to those definitions.

 */

#if defined(CONFIG_PPC_256K_PAGES)

#define PAGE_SHIFT		18

#elif defined(CONFIG_PPC_64K_PAGES)

#define PAGE_SHIFT		16

#elif defined(CONFIG_PPC_16K_PAGES)

#define PAGE_SHIFT		14

#else

#define PAGE_SHIFT		12

#endif



#define PAGE_SHIFT		CONFIG_PPC_PAGE_SHIFT

#define PAGE_SIZE		(ASM_CONST(1) << PAGE_SHIFT)



#ifndef __ASSEMBLY__