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Wed, 8 Dec 2021 17:18:20 +0000 From: Christophe Leroy To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , "alex@ghiti.fr" CC: Christophe Leroy , "linux-kernel@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-mm@kvack.org" , "akpm@linux-foundation.org" , Nicholas Piggin Subject: [PATCH v4 05/10] powerpc/mm: Remove CONFIG_PPC_MM_SLICES Thread-Topic: [PATCH v4 05/10] powerpc/mm: Remove CONFIG_PPC_MM_SLICES Thread-Index: AQHX7FeY8SQL1cZ4Pkif6fv54TDK0g== Date: Wed, 8 Dec 2021 17:18:19 +0000 Message-ID: References: In-Reply-To: Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 72913f7a-0c43-497b-c3bf-08d9ba6ebb47 x-ms-traffictypediagnostic: MR2P264MB0228:EE_ x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4125; x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MRZP264MB2988.FRAP264.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(4636009)(366004)(2616005)(91956017)(76116006)(66946007)(122000001)(5660300002)(38100700002)(66476007)(44832011)(6512007)(64756008)(66446008)(6486002)(66556008)(8676002)(86362001)(4326008)(8936002)(54906003)(508600001)(36756003)(71200400001)(38070700005)(316002)(83380400001)(26005)(110136005)(6506007)(2906002)(186003);DIR:OUT;SFP:1101; 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dkim=none; dmarc=none; spf=pass (imf04.hostedemail.com: domain of christophe.leroy@csgroup.eu designates 40.107.12.48 as permitted sender) smtp.mailfrom=christophe.leroy@csgroup.eu X-HE-Tag: 1638983903-484754 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: CONFIG_PPC_MM_SLICES is always selected by hash book3s/64. CONFIG_PPC_MM_SLICES is never selected by other platforms. Remove it. Signed-off-by: Christophe Leroy Reviewed-by: Nicholas Piggin --- arch/powerpc/include/asm/hugetlb.h | 2 +- arch/powerpc/include/asm/paca.h | 7 ------- arch/powerpc/kernel/paca.c | 5 ----- arch/powerpc/mm/book3s64/Makefile | 3 +-- arch/powerpc/mm/book3s64/hash_utils.c | 14 -------------- arch/powerpc/mm/hugetlbpage.c | 2 +- arch/powerpc/mm/mmap.c | 4 ++-- arch/powerpc/platforms/Kconfig.cputype | 4 ---- 8 files changed, 5 insertions(+), 36 deletions(-) diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index f18c543bc01d..86a60ba6bd2a 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h @@ -24,7 +24,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, unsigned long len) { - if (IS_ENABLED(CONFIG_PPC_MM_SLICES) && !radix_enabled()) + if (IS_ENABLED(CONFIG_PPC_64S_HASH_MMU) && !radix_enabled()) return slice_is_hugepage_only_range(mm, addr, len); return 0; } diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index 295573a82c66..bd4dd02e61c8 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -152,16 +152,9 @@ struct paca_struct { struct tlb_core_data tcd; #endif /* CONFIG_PPC_BOOK3E */ -#ifdef CONFIG_PPC_BOOK3S #ifdef CONFIG_PPC_64S_HASH_MMU -#ifdef CONFIG_PPC_MM_SLICES unsigned char mm_ctx_low_slices_psize[BITS_PER_LONG / BITS_PER_BYTE]; unsigned char mm_ctx_high_slices_psize[SLICE_ARRAY_SIZE]; -#else - u16 mm_ctx_user_psize; - u16 mm_ctx_sllp; -#endif -#endif #endif /* diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index 39da688a9455..ba593fd60124 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -344,15 +344,10 @@ void copy_mm_to_paca(struct mm_struct *mm) { mm_context_t *context = &mm->context; -#ifdef CONFIG_PPC_MM_SLICES VM_BUG_ON(!mm_ctx_slb_addr_limit(context)); memcpy(&get_paca()->mm_ctx_low_slices_psize, mm_ctx_low_slices(context), LOW_SLICE_ARRAY_SZ); memcpy(&get_paca()->mm_ctx_high_slices_psize, mm_ctx_high_slices(context), TASK_SLICE_ARRAY_SZ(context)); -#else /* CONFIG_PPC_MM_SLICES */ - get_paca()->mm_ctx_user_psize = context->user_psize; - get_paca()->mm_ctx_sllp = context->sllp; -#endif } #endif /* CONFIG_PPC_64S_HASH_MMU */ diff --git a/arch/powerpc/mm/book3s64/Makefile b/arch/powerpc/mm/book3s64/Makefile index af2f3e75d458..d527dc8e30a8 100644 --- a/arch/powerpc/mm/book3s64/Makefile +++ b/arch/powerpc/mm/book3s64/Makefile @@ -5,7 +5,7 @@ ccflags-y := $(NO_MINIMAL_TOC) obj-y += mmu_context.o pgtable.o trace.o ifdef CONFIG_PPC_64S_HASH_MMU CFLAGS_REMOVE_slb.o = $(CC_FLAGS_FTRACE) -obj-y += hash_pgtable.o hash_utils.o hash_tlb.o slb.o +obj-y += hash_pgtable.o hash_utils.o hash_tlb.o slb.o slice.o obj-$(CONFIG_PPC_HASH_MMU_NATIVE) += hash_native.o obj-$(CONFIG_PPC_4K_PAGES) += hash_4k.o obj-$(CONFIG_PPC_64K_PAGES) += hash_64k.o @@ -21,7 +21,6 @@ obj-$(CONFIG_PPC_RADIX_MMU) += radix_hugetlbpage.o endif obj-$(CONFIG_SPAPR_TCE_IOMMU) += iommu_api.o obj-$(CONFIG_PPC_PKEY) += pkeys.o -obj-$(CONFIG_PPC_MM_SLICES) += slice.o # Instrumenting the SLB fault path can lead to duplicate SLB entries KCOV_INSTRUMENT_slb.o := n diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c index eced266dc5e9..7ecadf5e6bf9 100644 --- a/arch/powerpc/mm/book3s64/hash_utils.c +++ b/arch/powerpc/mm/book3s64/hash_utils.c @@ -1264,7 +1264,6 @@ unsigned int hash_page_do_lazy_icache(unsigned int pp, pte_t pte, int trap) return pp; } -#ifdef CONFIG_PPC_MM_SLICES static unsigned int get_paca_psize(unsigned long addr) { unsigned char *psizes; @@ -1281,12 +1280,6 @@ static unsigned int get_paca_psize(unsigned long addr) return (psizes[index >> 1] >> (mask_index * 4)) & 0xF; } -#else -unsigned int get_paca_psize(unsigned long addr) -{ - return get_paca()->mm_ctx_user_psize; -} -#endif /* * Demote a segment to using 4k pages. @@ -1710,7 +1703,6 @@ DEFINE_INTERRUPT_HANDLER_RAW(do_hash_fault) return 0; } -#ifdef CONFIG_PPC_MM_SLICES static bool should_hash_preload(struct mm_struct *mm, unsigned long ea) { int psize = get_slice_psize(mm, ea); @@ -1727,12 +1719,6 @@ static bool should_hash_preload(struct mm_struct *mm, unsigned long ea) return true; } -#else -static bool should_hash_preload(struct mm_struct *mm, unsigned long ea) -{ - return true; -} -#endif static void hash_preload(struct mm_struct *mm, pte_t *ptep, unsigned long ea, bool is_exec, unsigned long trap) diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 0eec3b61bd13..f18b3a1d18f0 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -558,7 +558,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, return radix__hugetlb_get_unmapped_area(file, addr, len, pgoff, flags); #endif -#ifdef CONFIG_PPC_MM_SLICES +#ifdef CONFIG_PPC_64S_HASH_MMU return slice_get_unmapped_area(addr, len, flags, file_to_psize(file), 1); #endif BUG(); diff --git a/arch/powerpc/mm/mmap.c b/arch/powerpc/mm/mmap.c index c475cf810aa8..9b0d6e395bc0 100644 --- a/arch/powerpc/mm/mmap.c +++ b/arch/powerpc/mm/mmap.c @@ -190,7 +190,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long pgoff, unsigned long flags) { -#ifdef CONFIG_PPC_MM_SLICES +#ifdef CONFIG_PPC_64S_HASH_MMU return slice_get_unmapped_area(addr, len, flags, mm_ctx_user_psize(¤t->mm->context), 0); #else @@ -204,7 +204,7 @@ unsigned long arch_get_unmapped_area_topdown(struct file *filp, const unsigned long pgoff, const unsigned long flags) { -#ifdef CONFIG_PPC_MM_SLICES +#ifdef CONFIG_PPC_64S_HASH_MMU return slice_get_unmapped_area(addr0, len, flags, mm_ctx_user_psize(¤t->mm->context), 1); #else diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 87bc1929ee5a..c775b566e7b4 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -376,7 +376,6 @@ config SPE config PPC_64S_HASH_MMU bool "Hash MMU Support" depends on PPC_BOOK3S_64 - select PPC_MM_SLICES default y help Enable support for the Power ISA Hash style MMU. This is implemented @@ -450,9 +449,6 @@ config PPC_BOOK3E_MMU def_bool y depends on FSL_BOOKE || PPC_BOOK3E -config PPC_MM_SLICES - bool - config PPC_HAVE_PMU_SUPPORT bool