From 555904d07eef3a2e5fc458419edf6174362c4ddd Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 19 May 2020 05:49:11 +0000 Subject: [PATCH] powerpc/8xx: MM_SLICE is not needed anymore As the 8xx now manages 512k pages in standard page tables, it doesn't need CONFIG_PPC_MM_SLICES anymore. Don't select it anymore and remove all related code. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/98e8ccd424476ea73cced2b89ba38eb2ed8144fb.1589866984.git.christophe.leroy@csgroup.eu --- arch/powerpc/include/asm/nohash/32/mmu-8xx.h | 64 -------------------- arch/powerpc/include/asm/nohash/32/slice.h | 20 ------ arch/powerpc/include/asm/slice.h | 2 - arch/powerpc/platforms/Kconfig.cputype | 1 - 4 files changed, 87 deletions(-) delete mode 100644 arch/powerpc/include/asm/nohash/32/slice.h diff --git a/arch/powerpc/include/asm/nohash/32/mmu-8xx.h b/arch/powerpc/include/asm/nohash/32/mmu-8xx.h index 26b7cee34dfe..a092e6434bda 100644 --- a/arch/powerpc/include/asm/nohash/32/mmu-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/mmu-8xx.h @@ -176,12 +176,6 @@ */ #define SPRN_M_TW 799 -#ifdef CONFIG_PPC_MM_SLICES -#include -#define SLICE_ARRAY_SIZE (1 << (32 - SLICE_LOW_SHIFT - 1)) -#define LOW_SLICE_ARRAY_SZ SLICE_ARRAY_SIZE -#endif - #if defined(CONFIG_PPC_4K_PAGES) #define mmu_virtual_psize MMU_PAGE_4K #elif defined(CONFIG_PPC_16K_PAGES) @@ -199,71 +193,13 @@ #include -struct slice_mask { - u64 low_slices; - DECLARE_BITMAP(high_slices, 0); -}; - typedef struct { unsigned int id; unsigned int active; unsigned long vdso_base; -#ifdef CONFIG_PPC_MM_SLICES - u16 user_psize; /* page size index */ - unsigned char low_slices_psize[SLICE_ARRAY_SIZE]; - unsigned char high_slices_psize[0]; - unsigned long slb_addr_limit; - struct slice_mask mask_base_psize; /* 4k or 16k */ - struct slice_mask mask_512k; - struct slice_mask mask_8m; -#endif void *pte_frag; } mm_context_t; -#ifdef CONFIG_PPC_MM_SLICES -static inline u16 mm_ctx_user_psize(mm_context_t *ctx) -{ - return ctx->user_psize; -} - -static inline void mm_ctx_set_user_psize(mm_context_t *ctx, u16 user_psize) -{ - ctx->user_psize = user_psize; -} - -static inline unsigned char *mm_ctx_low_slices(mm_context_t *ctx) -{ - return ctx->low_slices_psize; -} - -static inline unsigned char *mm_ctx_high_slices(mm_context_t *ctx) -{ - return ctx->high_slices_psize; -} - -static inline unsigned long mm_ctx_slb_addr_limit(mm_context_t *ctx) -{ - return ctx->slb_addr_limit; -} - -static inline void mm_ctx_set_slb_addr_limit(mm_context_t *ctx, unsigned long limit) -{ - ctx->slb_addr_limit = limit; -} - -static inline struct slice_mask *slice_mask_for_size(mm_context_t *ctx, int psize) -{ - if (psize == MMU_PAGE_512K) - return &ctx->mask_512k; - if (psize == MMU_PAGE_8M) - return &ctx->mask_8m; - - BUG_ON(psize != mmu_virtual_psize); - - return &ctx->mask_base_psize; -} -#endif /* CONFIG_PPC_MM_SLICE */ - #define PHYS_IMMR_BASE (mfspr(SPRN_IMMR) & 0xfff80000) #define VIRT_IMMR_BASE (__fix_to_virt(FIX_IMMR_BASE)) diff --git a/arch/powerpc/include/asm/nohash/32/slice.h b/arch/powerpc/include/asm/nohash/32/slice.h deleted file mode 100644 index 39eb0154ae2d..000000000000 --- a/arch/powerpc/include/asm/nohash/32/slice.h +++ /dev/null @@ -1,20 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_POWERPC_NOHASH_32_SLICE_H -#define _ASM_POWERPC_NOHASH_32_SLICE_H - -#ifdef CONFIG_PPC_MM_SLICES - -#define SLICE_LOW_SHIFT 26 /* 64 slices */ -#define SLICE_LOW_TOP (0x100000000ull) -#define SLICE_NUM_LOW (SLICE_LOW_TOP >> SLICE_LOW_SHIFT) -#define GET_LOW_SLICE_INDEX(addr) ((addr) >> SLICE_LOW_SHIFT) - -#define SLICE_HIGH_SHIFT 0 -#define SLICE_NUM_HIGH 0ul -#define GET_HIGH_SLICE_INDEX(addr) (addr & 0) - -#define SLB_ADDR_LIMIT_DEFAULT DEFAULT_MAP_WINDOW - -#endif /* CONFIG_PPC_MM_SLICES */ - -#endif /* _ASM_POWERPC_NOHASH_32_SLICE_H */ diff --git a/arch/powerpc/include/asm/slice.h b/arch/powerpc/include/asm/slice.h index c6f466f4c241..0bdd9c62eca0 100644 --- a/arch/powerpc/include/asm/slice.h +++ b/arch/powerpc/include/asm/slice.h @@ -4,8 +4,6 @@ #ifdef CONFIG_PPC_BOOK3S_64 #include -#elif defined(CONFIG_PPC_MMU_NOHASH_32) -#include #endif #ifndef __ASSEMBLY__ diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 0c3c1902135c..b0587b833517 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -55,7 +55,6 @@ config PPC_8xx select SYS_SUPPORTS_HUGETLBFS select PPC_HAVE_KUEP select PPC_HAVE_KUAP - select PPC_MM_SLICES if HUGETLB_PAGE select HAVE_ARCH_VMAP_STACK config 40x