From: Kirill A. Shutemov Date: Tue, 14 Apr 2015 22:45:39 +0000 (-0700) Subject: arm64: expose number of page table levels on Kconfig level X-Git-Tag: omap-for-v4.1/fixes-rc1~151^2~58 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9f25e6ad58e1fb3b4d441e4c55635c4598a6fa94;p=pandora-kernel.git arm64: expose number of page table levels on Kconfig level We would want to use number of page table level to define mm_struct. Let's expose it as CONFIG_PGTABLE_LEVELS. ARM64_PGTABLE_LEVELS is renamed to PGTABLE_LEVELS and defined before sourcing init/Kconfig: arch/Kconfig will define default value and it's sourced from init/Kconfig. Signed-off-by: Kirill A. Shutemov Acked-by: Catalin Marinas Cc: Will Deacon Tested-by: Guenter Roeck Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1b8e97331ffb..3f2fba996bc2 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -143,6 +143,13 @@ config KERNEL_MODE_NEON config FIX_EARLYCON_MEM def_bool y +config PGTABLE_LEVELS + int + default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42 + default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48 + default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39 + default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48 + source "init/Kconfig" source "kernel/Kconfig.freezer" @@ -413,13 +420,6 @@ config ARM64_VA_BITS default 42 if ARM64_VA_BITS_42 default 48 if ARM64_VA_BITS_48 -config ARM64_PGTABLE_LEVELS - int - default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42 - default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48 - default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39 - default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48 - config CPU_BIG_ENDIAN bool "Build big-endian kernel" help diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index bbfb600fa822..36250705dc4c 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -163,12 +163,12 @@ static inline bool kvm_s2pmd_readonly(pmd_t *pmd) /* * If we are concatenating first level stage-2 page tables, we would have less * than or equal to 16 pointers in the fake PGD, because that's what the - * architecture allows. In this case, (4 - CONFIG_ARM64_PGTABLE_LEVELS) + * architecture allows. In this case, (4 - CONFIG_PGTABLE_LEVELS) * represents the first level for the host, and we add 1 to go to the next * level (which uses contatenation) for the stage-2 tables. */ #if PTRS_PER_S2_PGD <= 16 -#define KVM_PREALLOC_LEVEL (4 - CONFIG_ARM64_PGTABLE_LEVELS + 1) +#define KVM_PREALLOC_LEVEL (4 - CONFIG_PGTABLE_LEVELS + 1) #else #define KVM_PREALLOC_LEVEL (0) #endif diff --git a/arch/arm64/include/asm/page.h b/arch/arm64/include/asm/page.h index 22b16232bd60..8fc8fa280e92 100644 --- a/arch/arm64/include/asm/page.h +++ b/arch/arm64/include/asm/page.h @@ -36,9 +36,9 @@ * for more information). */ #ifdef CONFIG_ARM64_64K_PAGES -#define SWAPPER_PGTABLE_LEVELS (CONFIG_ARM64_PGTABLE_LEVELS) +#define SWAPPER_PGTABLE_LEVELS (CONFIG_PGTABLE_LEVELS) #else -#define SWAPPER_PGTABLE_LEVELS (CONFIG_ARM64_PGTABLE_LEVELS - 1) +#define SWAPPER_PGTABLE_LEVELS (CONFIG_PGTABLE_LEVELS - 1) #endif #define SWAPPER_DIR_SIZE (SWAPPER_PGTABLE_LEVELS * PAGE_SIZE) Reading git-diff-tree failed