From patchwork Thu Nov 25 08:23:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 12638653 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 930E3C433F5 for ; Thu, 25 Nov 2021 08:26:16 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 4313D6B007E; Thu, 25 Nov 2021 03:24:13 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 3DF9B6B0080; Thu, 25 Nov 2021 03:24:13 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2A7F26B0081; Thu, 25 Nov 2021 03:24:13 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 1E39C6B007E for ; Thu, 25 Nov 2021 03:24:13 -0500 (EST) Received: from smtpin24.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id E00A1824C441 for ; Thu, 25 Nov 2021 08:24:02 +0000 (UTC) X-FDA: 78846764724.24.9A34B8B Received: from pegase2.c-s.fr (pegase2.c-s.fr [93.17.235.10]) by imf22.hostedemail.com (Postfix) with ESMTP id B119B1924 for ; Thu, 25 Nov 2021 08:24:01 +0000 (UTC) Received: from localhost (mailhub3.si.c-s.fr [172.26.127.67]) by localhost (Postfix) with ESMTP id 4J09rS0GRRz9sSc; Thu, 25 Nov 2021 09:23:52 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase2.c-s.fr ([172.26.127.65]) by localhost (pegase2.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id V_UTqdn76U3j; Thu, 25 Nov 2021 09:23:51 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase2.c-s.fr (Postfix) with ESMTP id 4J09rM5Lc7z9sSW; Thu, 25 Nov 2021 09:23:47 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id A54D28B77A; Thu, 25 Nov 2021 09:23:47 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id mJry4w9U1yMi; Thu, 25 Nov 2021 09:23:47 +0100 (CET) Received: from PO20335.IDSI0.si.c-s.fr (unknown [192.168.203.227]) by messagerie.si.c-s.fr (Postfix) with ESMTP id E1BEF8B77B; Thu, 25 Nov 2021 09:23:46 +0100 (CET) Received: from PO20335.IDSI0.si.c-s.fr (localhost [127.0.0.1]) by PO20335.IDSI0.si.c-s.fr (8.17.1/8.16.1) with ESMTPS id 1AP8NcqW086356 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Thu, 25 Nov 2021 09:23:38 +0100 Received: (from chleroy@localhost) by PO20335.IDSI0.si.c-s.fr (8.17.1/8.17.1/Submit) id 1AP8NcOC086355; Thu, 25 Nov 2021 09:23:38 +0100 X-Authentication-Warning: PO20335.IDSI0.si.c-s.fr: chleroy set sender to christophe.leroy@csgroup.eu using -f 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 Subject: [PATCH v2 3/9] powerpc/mm: Remove CONFIG_PPC_MM_SLICES Date: Thu, 25 Nov 2021 09:23:25 +0100 Message-Id: X-Mailer: git-send-email 2.33.1 In-Reply-To: References: MIME-Version: 1.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1637828609; l=6936; s=20211009; h=from:subject:message-id; bh=3cGnmd0EjnW2n/ICino4pqeUBjurXX8Hfs7d7SgiwXM=; b=ugxiAF6dT+oSwcY/3TJt7GOf27OX4RzPUZn2DdeQX8piSWbX6KRn8wdaFndI3d170Owg4w04/iGK T0HjF7kXBDNb6/6UlfQnNSXQBHZJVmAstR4rX9hj/AG5D5Y5Qk1X X-Developer-Key: i=christophe.leroy@csgroup.eu; a=ed25519; pk=HIzTzUj91asvincQGOFx6+ZF5AoUuP9GdOtQChs7Mm0= X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: B119B1924 X-Stat-Signature: 3c8q38ghbdw95w7rzxskxuaashnfciff Authentication-Results: imf22.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf22.hostedemail.com: domain of christophe.leroy@csgroup.eu designates 93.17.235.10 as permitted sender) smtp.mailfrom=christophe.leroy@csgroup.eu X-HE-Tag: 1637828641-208483 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 book3s/64. CONFIG_PPC_MM_SLICES is never selected by other platforms. Remove it. Signed-off-by: Christophe Leroy --- arch/powerpc/include/asm/book3s/64/hash.h | 2 -- arch/powerpc/include/asm/hugetlb.h | 2 +- arch/powerpc/include/asm/paca.h | 5 ----- arch/powerpc/include/asm/slice.h | 13 ++----------- arch/powerpc/kernel/paca.c | 5 ----- arch/powerpc/mm/book3s64/Makefile | 3 +-- arch/powerpc/mm/book3s64/hash_utils.c | 14 -------------- arch/powerpc/platforms/Kconfig.cputype | 4 ---- 8 files changed, 4 insertions(+), 44 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h index 674fe0e890dc..25f8e90985eb 100644 --- a/arch/powerpc/include/asm/book3s/64/hash.h +++ b/arch/powerpc/include/asm/book3s/64/hash.h @@ -99,10 +99,8 @@ * Defines the address of the vmemap area, in its own region on * hash table CPUs. */ -#ifdef CONFIG_PPC_MM_SLICES #define HAVE_ARCH_UNMAPPED_AREA #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN -#endif /* CONFIG_PPC_MM_SLICES */ /* PTEIDX nibble */ #define _PTEIDX_SECONDARY 0x8 diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index f18c543bc01d..83f067d4d2f3 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_BOOK3S_64) && !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 dc05a862e72a..20bef2e8533b 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -149,13 +149,8 @@ struct paca_struct { #endif /* CONFIG_PPC_BOOK3E */ #ifdef CONFIG_PPC_BOOK3S -#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 /* diff --git a/arch/powerpc/include/asm/slice.h b/arch/powerpc/include/asm/slice.h index 0bdd9c62eca0..be4acc52e8ec 100644 --- a/arch/powerpc/include/asm/slice.h +++ b/arch/powerpc/include/asm/slice.h @@ -10,7 +10,7 @@ struct mm_struct; -#ifdef CONFIG_PPC_MM_SLICES +#ifdef CONFIG_PPC_BOOK3S_64 #ifdef CONFIG_HUGETLB_PAGE #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA @@ -30,16 +30,7 @@ void slice_set_range_psize(struct mm_struct *mm, unsigned long start, void slice_init_new_context_exec(struct mm_struct *mm); void slice_setup_new_exec(void); -#else /* CONFIG_PPC_MM_SLICES */ - -static inline void slice_init_new_context_exec(struct mm_struct *mm) {} - -static inline unsigned int get_slice_psize(struct mm_struct *mm, unsigned long addr) -{ - return 0; -} - -#endif /* CONFIG_PPC_MM_SLICES */ +#endif /* CONFIG_PPC_BOOK3S_64 */ #endif /* __ASSEMBLY__ */ diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index 4208b4044d12..a61f6fdcfb00 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -346,16 +346,11 @@ void copy_mm_to_paca(struct mm_struct *mm) #ifdef CONFIG_PPC_BOOK3S 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 #else /* !CONFIG_PPC_BOOK3S */ return; #endif diff --git a/arch/powerpc/mm/book3s64/Makefile b/arch/powerpc/mm/book3s64/Makefile index 30951668c684..f8562c79c59f 100644 --- a/arch/powerpc/mm/book3s64/Makefile +++ b/arch/powerpc/mm/book3s64/Makefile @@ -4,7 +4,7 @@ ccflags-y := $(NO_MINIMAL_TOC) CFLAGS_REMOVE_slb.o = $(CC_FLAGS_FTRACE) -obj-y += hash_pgtable.o hash_utils.o slb.o \ +obj-y += hash_pgtable.o hash_utils.o slb.o slice.o \ mmu_context.o pgtable.o hash_tlb.o obj-$(CONFIG_PPC_NATIVE) += hash_native.o obj-$(CONFIG_PPC_RADIX_MMU) += radix_pgtable.o radix_tlb.o @@ -18,7 +18,6 @@ obj-$(CONFIG_TRANSPARENT_HUGEPAGE) += hash_hugepage.o obj-$(CONFIG_PPC_SUBPAGE_PROT) += subpage_prot.o obj-$(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 cfd45245d009..1d09d4aeddbf 100644 --- a/arch/powerpc/mm/book3s64/hash_utils.c +++ b/arch/powerpc/mm/book3s64/hash_utils.c @@ -1165,7 +1165,6 @@ 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; @@ -1182,12 +1181,6 @@ 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. @@ -1611,7 +1604,6 @@ 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); @@ -1628,12 +1620,6 @@ 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/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index a208997ade88..580339c0c5bc 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -105,7 +105,6 @@ config PPC_BOOK3S_64 select HAVE_MOVE_PMD select HAVE_MOVE_PUD select IRQ_WORK - select PPC_MM_SLICES select PPC_HAVE_KUEP select PPC_HAVE_KUAP @@ -432,9 +431,6 @@ config PPC_BOOK3E_MMU def_bool y depends on FSL_BOOKE || PPC_BOOK3E -config PPC_MM_SLICES - bool - config PPC_HAVE_PMU_SUPPORT bool