From: Arnd Bergmann Date: Mon, 26 Feb 2024 16:14:12 +0000 (+0100) Subject: arch: simplify architecture specific page size configuration X-Git-Tag: v6.9-rc1~174^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d3e5bab923d35f73c74f6dbbb761988d4f58f878;p=thirdparty%2Flinux.git arch: simplify architecture specific page size configuration arc, arm64, parisc and powerpc all have their own Kconfig symbols in place of the common CONFIG_PAGE_SIZE_4KB symbols. Change these so the common symbols are the ones that are actually used, while leaving the arhcitecture specific ones as the user visible place for configuring it, to avoid breaking user configs. Reviewed-by: Christophe Leroy (powerpc32) Acked-by: Catalin Marinas Acked-by: Helge Deller # parisc Reviewed-by: Thomas Gleixner Signed-off-by: Arnd Bergmann --- diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 1b0483c51cc16..4092bec198bec 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -284,14 +284,17 @@ choice config ARC_PAGE_SIZE_8K bool "8KB" + select HAVE_PAGE_SIZE_8KB help Choose between 8k vs 16k config ARC_PAGE_SIZE_16K + select HAVE_PAGE_SIZE_16KB bool "16KB" config ARC_PAGE_SIZE_4K bool "4KB" + select HAVE_PAGE_SIZE_4KB depends on ARC_MMU_V3 || ARC_MMU_V4 endchoice diff --git a/arch/arc/include/uapi/asm/page.h b/arch/arc/include/uapi/asm/page.h index 2a4ad619abfba..7fd9e741b5274 100644 --- a/arch/arc/include/uapi/asm/page.h +++ b/arch/arc/include/uapi/asm/page.h @@ -13,10 +13,8 @@ #include /* PAGE_SHIFT determines the page size */ -#if defined(CONFIG_ARC_PAGE_SIZE_16K) -#define PAGE_SHIFT 14 -#elif defined(CONFIG_ARC_PAGE_SIZE_4K) -#define PAGE_SHIFT 12 +#ifdef __KERNEL__ +#define PAGE_SHIFT CONFIG_PAGE_SHIFT #else /* * Default 8k diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index aa7c1d4351396..29290b8cb36dc 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -277,27 +277,21 @@ config 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_PTE_SHIFT int - default 5 if ARM64_64K_PAGES - default 7 if ARM64_16K_PAGES + default 5 if PAGE_SIZE_64KB + default 7 if PAGE_SIZE_16KB default 4 config ARM64_CONT_PMD_SHIFT int - default 5 if ARM64_64K_PAGES - default 5 if ARM64_16K_PAGES + default 5 if PAGE_SIZE_64KB + default 5 if PAGE_SIZE_16KB default 4 config ARCH_MMAP_RND_BITS_MIN - default 14 if ARM64_64K_PAGES - default 16 if ARM64_16K_PAGES + default 14 if PAGE_SIZE_64KB + default 16 if PAGE_SIZE_16KB default 18 # max bits determined by the following formula: @@ -1259,11 +1253,13 @@ choice config ARM64_4K_PAGES bool "4KB" + select HAVE_PAGE_SIZE_4KB help This feature enables 4KB pages support. config ARM64_16K_PAGES bool "16KB" + select HAVE_PAGE_SIZE_16KB help The system will use 16KB pages support. AArch32 emulation requires applications compiled with 16K (or a multiple of 16K) @@ -1271,6 +1267,7 @@ config ARM64_16K_PAGES config ARM64_64K_PAGES bool "64KB" + select HAVE_PAGE_SIZE_64KB help This feature enables 64KB pages support (4KB by default) allowing only two levels of page tables and faster TLB @@ -1291,19 +1288,19 @@ choice config ARM64_VA_BITS_36 bool "36-bit" if EXPERT - depends on ARM64_16K_PAGES + depends on PAGE_SIZE_16KB config ARM64_VA_BITS_39 bool "39-bit" - depends on ARM64_4K_PAGES + depends on PAGE_SIZE_4KB config ARM64_VA_BITS_42 bool "42-bit" - depends on ARM64_64K_PAGES + depends on PAGE_SIZE_64KB config ARM64_VA_BITS_47 bool "47-bit" - depends on ARM64_16K_PAGES + depends on PAGE_SIZE_16KB config ARM64_VA_BITS_48 bool "48-bit" diff --git a/arch/arm64/include/asm/page-def.h b/arch/arm64/include/asm/page-def.h index 2403f7b4cdbfb..792e9fe881dcf 100644 --- a/arch/arm64/include/asm/page-def.h +++ b/arch/arm64/include/asm/page-def.h @@ -11,7 +11,7 @@ #include /* PAGE_SHIFT determines the page size */ -#define PAGE_SHIFT CONFIG_ARM64_PAGE_SHIFT +#define PAGE_SHIFT CONFIG_PAGE_SHIFT #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 5c845e8d59d92..b180e684fa0db 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -273,6 +273,7 @@ choice config PARISC_PAGE_SIZE_4KB bool "4KB" + select HAVE_PAGE_SIZE_4KB help This lets you select the page size of the kernel. For best performance, a page size of 16KB is recommended. For best @@ -288,10 +289,12 @@ config PARISC_PAGE_SIZE_4KB config PARISC_PAGE_SIZE_16KB bool "16KB" + select HAVE_PAGE_SIZE_16KB depends on PA8X00 && BROKEN && !KFENCE config PARISC_PAGE_SIZE_64KB bool "64KB" + select HAVE_PAGE_SIZE_64KB depends on PA8X00 && BROKEN && !KFENCE endchoice diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h index 667e703c0e8f6..ad4e15d12ed1c 100644 --- a/arch/parisc/include/asm/page.h +++ b/arch/parisc/include/asm/page.h @@ -4,15 +4,7 @@ #include -#if defined(CONFIG_PARISC_PAGE_SIZE_4KB) -# define PAGE_SHIFT 12 -#elif defined(CONFIG_PARISC_PAGE_SIZE_16KB) -# define PAGE_SHIFT 14 -#elif defined(CONFIG_PARISC_PAGE_SIZE_64KB) -# define PAGE_SHIFT 16 -#else -# error "unknown default kernel page size" -#endif +#define PAGE_SHIFT CONFIG_PAGE_SHIFT #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b9fc064d38d28..8fad4e5d7ad5d 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -212,7 +212,7 @@ config PPC select HAVE_ARCH_HUGE_VMAP if PPC_RADIX_MMU || PPC_8xx select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE - select HAVE_ARCH_KASAN if PPC32 && PPC_PAGE_SHIFT <= 14 + select HAVE_ARCH_KASAN if PPC32 && PAGE_SHIFT <= 14 select HAVE_ARCH_KASAN if PPC_RADIX_MMU select HAVE_ARCH_KASAN if PPC_BOOK3E_64 select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN @@ -809,19 +809,23 @@ choice config PPC_4K_PAGES bool "4k page size" select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64 + select HAVE_PAGE_SIZE_4KB config PPC_16K_PAGES bool "16k page size" depends on 44x || PPC_8xx + select HAVE_PAGE_SIZE_16KB config PPC_64K_PAGES bool "64k page size" depends on 44x || PPC_BOOK3S_64 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64 + select HAVE_PAGE_SIZE_64KB config PPC_256K_PAGES bool "256k page size (Requires non-standard binutils settings)" depends on 44x && !PPC_47x + select HAVE_PAGE_SIZE_256KB help Make the page size 256k. @@ -832,29 +836,6 @@ config PPC_256K_PAGES endchoice -config PAGE_SIZE_4KB - def_bool y - depends on PPC_4K_PAGES - -config PAGE_SIZE_16KB - def_bool y - depends on PPC_16K_PAGES - -config PAGE_SIZE_64KB - def_bool y - depends on PPC_64K_PAGES - -config PAGE_SIZE_256KB - def_bool y - depends on PPC_256K_PAGES - -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 @@ -891,7 +872,7 @@ config DATA_SHIFT default 23 if (DEBUG_PAGEALLOC || KFENCE) && PPC_8xx && PIN_TLB_DATA default 19 if (DEBUG_PAGEALLOC || KFENCE) && PPC_8xx default 24 if STRICT_KERNEL_RWX && PPC_85xx - default PPC_PAGE_SHIFT + default PAGE_SHIFT help On Book3S 32 (603+), DBATs are used to map kernel text and rodata RO. Smaller is the alignment, greater is the number of necessary DBATs. diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index e5fcc79b5bfba..e411e5a70ea39 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -21,7 +21,7 @@ * page size. When using 64K pages however, whether we are really supporting * 64K pages in HW or not is irrelevant to those definitions. */ -#define PAGE_SHIFT CONFIG_PPC_PAGE_SHIFT +#define PAGE_SHIFT CONFIG_PAGE_SHIFT #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) #ifndef __ASSEMBLY__ diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index e810e0c27ff18..10fadc2387194 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -139,7 +139,7 @@ LX_CONFIG(CONFIG_ARM64_64K_PAGES) if IS_BUILTIN(CONFIG_ARM64): LX_VALUE(CONFIG_ARM64_PA_BITS) LX_VALUE(CONFIG_ARM64_VA_BITS) - LX_VALUE(CONFIG_ARM64_PAGE_SHIFT) + LX_VALUE(CONFIG_PAGE_SHIFT) LX_VALUE(CONFIG_ARCH_FORCE_MAX_ORDER) LX_CONFIG(CONFIG_SPARSEMEM) LX_CONFIG(CONFIG_SPARSEMEM_EXTREME) diff --git a/scripts/gdb/linux/mm.py b/scripts/gdb/linux/mm.py index ad5641dcb0686..515730fd4c9d2 100644 --- a/scripts/gdb/linux/mm.py +++ b/scripts/gdb/linux/mm.py @@ -41,7 +41,7 @@ class aarch64_page_ops(): self.SECTION_SIZE_BITS = 27 self.MAX_PHYSMEM_BITS = constants.LX_CONFIG_ARM64_VA_BITS - self.PAGE_SHIFT = constants.LX_CONFIG_ARM64_PAGE_SHIFT + self.PAGE_SHIFT = constants.LX_CONFIG_PAGE_SHIFT self.PAGE_SIZE = 1 << self.PAGE_SHIFT self.PAGE_MASK = (~(self.PAGE_SIZE - 1)) & ((1 << 64) - 1)