From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Tue, 31 May 2016 15:57:59 +0100 Subject: [PATCH 1/2] arm64: move {PAGE,CONT}_SHIFT into Kconfig In-Reply-To: <1464706680-15713-1-git-send-email-mark.rutland@arm.com> References: <1464706680-15713-1-git-send-email-mark.rutland@arm.com> Message-ID: <1464706680-15713-2-git-send-email-mark.rutland@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org In some cases (e.g. the awk for CONFIG_RANDOMIZE_TEXT_OFFSET) we would like to make use of PAGE_SHIFT outside of code that can include the usual header files. Add a new CONFIG_ARM64_PAGE_SHIFT for this, likewise with ARM64_CONT_SHIFT for consistency. Signed-off-by: Mark Rutland Cc: Ard Biesheuvel Cc: Catalin Marinas Cc: Sudeep Holla Cc: Will Deacon --- arch/arm64/Kconfig | 12 ++++++++++++ arch/arm64/include/asm/page.h | 12 ++---------- 2 files changed, 14 insertions(+), 10 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 76747d9..5fe3208 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -113,6 +113,18 @@ config ARCH_PHYS_ADDR_T_64BIT config MMU def_bool y +config ARM64_PAGE_SHIFT + int + default 16 if ARM64_64K_PAGES + default 14 if ARM64_16K_PAGES + default 12 + +config ARM64_CONT_SHIFT + int + default 5 if ARM64_64K_PAGES + default 7 if ARM64_16K_PAGES + default 4 + config ARCH_MMAP_RND_BITS_MIN default 14 if ARM64_64K_PAGES default 16 if ARM64_16K_PAGES diff --git a/arch/arm64/include/asm/page.h b/arch/arm64/include/asm/page.h index 17b45f7..8472c6d 100644 --- a/arch/arm64/include/asm/page.h +++ b/arch/arm64/include/asm/page.h @@ -23,16 +23,8 @@ /* PAGE_SHIFT determines the page size */ /* CONT_SHIFT determines the number of pages which can be tracked together */ -#ifdef CONFIG_ARM64_64K_PAGES -#define PAGE_SHIFT 16 -#define CONT_SHIFT 5 -#elif defined(CONFIG_ARM64_16K_PAGES) -#define PAGE_SHIFT 14 -#define CONT_SHIFT 7 -#else -#define PAGE_SHIFT 12 -#define CONT_SHIFT 4 -#endif +#define PAGE_SHIFT CONFIG_ARM64_PAGE_SHIFT +#define CONT_SHIFT CONFIG_ARM64_CONT_SHIFT #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) -- 1.9.1