From patchwork Fri May 12 14:57:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= X-Patchwork-Id: 13239442 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 39E3EC77B7C for ; Fri, 12 May 2023 14:58:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=p8QHxHaGCAtbTw7RxEOkU/3PgClAK5sSJxgHIgv/PI0=; b=lQrrgW0yJuwHM/ aKMp4Abfj1a3xflJSaHhlPxxtPcRX97xHLes801mRYBelxaCfFNdVCZM7c16tAYQbzwuN2GJT97/C XaCO7Ordu0/usNsEf68b7dBy4et4AZ0RyPbFty7qO5bZP3bPSYeCJhSAbP4+zU+LYPCGp9CYq/zPV itT2uXoD74phZqRI7++4jPLH7OkdZ72LP0jIwH5Nh1P71uEgrneKfa4hlyd0/AmM+4GCtp5j9E5kc GlDyxBSgKemN9l+zB97cpuV0komGdwiHWFf5kSTtK+v9OvxJmjSZ/1fxw5RGl7F4cTKjUkfTaFwBe 2bCdfn4Dbyx5NetKomtg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pxUDe-00CFw3-38; Fri, 12 May 2023 14:58:06 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pxUDb-00CFuI-2s for linux-riscv@lists.infradead.org; Fri, 12 May 2023 14:58:05 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 54A0D60F02; Fri, 12 May 2023 14:58:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 057B2C433EF; Fri, 12 May 2023 14:57:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683903482; bh=TbHgG2w0XhFAPXkR+9W7hs3AnwbEfk/0KY6kqBQIJeI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rWaW1yO4zoG2gWhzY8P7BBZ0myq/alPhT7G9vRjXjVAcXidr8fdCS6X5CaHFGusk7 qjVS7b8XygHKs5JocjZwRQDxE+2oIuGJdZK09eCTMn0jLx8sOjkhFdpD3WL7S+BBgX r4z2SQVi2ZV24FFoPCpEtzWv+8VokXA3/LhdoSwVI7mcsZQJ/GkKl2yHLw+2PwlzvI 8GE3RPwss0CYTl9KkCRlDemA4GHpeMZ15fFn4z7MXRJg1TGizz45LBk1tMwq4mOHkO 9ILUr0Iz6q6JnHnIL/zxOMu9dQ/j4NYpc9GZAgm4PtOIR5ohWNiccDnmE/1e2KtNht 3fAZL7Z6pcaJA== From: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= To: Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-riscv@lists.infradead.org Cc: =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , linux-kernel@vger.kernel.org, linux-mm@kvack.org, David Hildenbrand , Oscar Salvador , virtualization@lists.linux-foundation.org, linux@rivosinc.com, Alexandre Ghiti Subject: [PATCH 2/7] riscv: mm: Change attribute from __init to __meminit for page functions Date: Fri, 12 May 2023 16:57:32 +0200 Message-Id: <20230512145737.985671-3-bjorn@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230512145737.985671-1-bjorn@kernel.org> References: <20230512145737.985671-1-bjorn@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230512_075804_009350_FD0261DF X-CRM114-Status: GOOD ( 14.69 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Björn Töpel Prepare for memory hot add/remove support by changing from __init to __meminit for the page-table functions that are used by the upcoming arch specific callbacks. Changing the __init attribute to __meminit, avoids that the functions are removed after init. __meminit keeps the functions after init, if memory hotplugging is enabled for the build. Signed-off-by: Björn Töpel --- arch/riscv/include/asm/mmu.h | 2 +- arch/riscv/include/asm/pgtable.h | 2 +- arch/riscv/mm/init.c | 49 ++++++++++++++------------------ 3 files changed, 24 insertions(+), 29 deletions(-) diff --git a/arch/riscv/include/asm/mmu.h b/arch/riscv/include/asm/mmu.h index 0099dc116168..9e5d4f37ba2e 100644 --- a/arch/riscv/include/asm/mmu.h +++ b/arch/riscv/include/asm/mmu.h @@ -22,7 +22,7 @@ typedef struct { #endif } mm_context_t; -void __init create_pgd_mapping(pgd_t *pgdp, uintptr_t va, phys_addr_t pa, +void __meminit create_pgd_mapping(pgd_t *pgdp, uintptr_t va, phys_addr_t pa, phys_addr_t sz, pgprot_t prot); #endif /* __ASSEMBLY__ */ diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 2258b27173b0..a4cdcb689959 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -147,7 +147,7 @@ struct pt_alloc_ops { #endif }; -extern struct pt_alloc_ops pt_ops __initdata; +extern struct pt_alloc_ops pt_ops __meminitdata; #ifdef CONFIG_MMU /* Number of PGD entries that a user-mode program can use */ diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index d2595cc33a1c..e974ff6ef036 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -356,7 +356,7 @@ static void __init setup_bootmem(void) } #ifdef CONFIG_MMU -struct pt_alloc_ops pt_ops __initdata; +struct pt_alloc_ops pt_ops __meminitdata; pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss; pgd_t trampoline_pg_dir[PTRS_PER_PGD] __page_aligned_bss; @@ -418,7 +418,7 @@ static inline pte_t *__init get_pte_virt_fixmap(phys_addr_t pa) return (pte_t *)set_fixmap_offset(FIX_PTE, pa); } -static inline pte_t *__init get_pte_virt_late(phys_addr_t pa) +static inline pte_t *__meminit get_pte_virt_late(phys_addr_t pa) { return (pte_t *) __va(pa); } @@ -437,7 +437,7 @@ static inline phys_addr_t __init alloc_pte_fixmap(uintptr_t va) return memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE); } -static phys_addr_t __init alloc_pte_late(uintptr_t va) +static phys_addr_t __meminit alloc_pte_late(uintptr_t va) { unsigned long vaddr; @@ -447,9 +447,8 @@ static phys_addr_t __init alloc_pte_late(uintptr_t va) return __pa(vaddr); } -static void __init create_pte_mapping(pte_t *ptep, - uintptr_t va, phys_addr_t pa, - phys_addr_t sz, pgprot_t prot) +static void __meminit create_pte_mapping(pte_t *ptep, uintptr_t va, phys_addr_t pa, phys_addr_t sz, + pgprot_t prot) { uintptr_t pte_idx = pte_index(va); @@ -503,7 +502,7 @@ static pmd_t *__init get_pmd_virt_fixmap(phys_addr_t pa) return (pmd_t *)set_fixmap_offset(FIX_PMD, pa); } -static pmd_t *__init get_pmd_virt_late(phys_addr_t pa) +static pmd_t *__meminit get_pmd_virt_late(phys_addr_t pa) { return (pmd_t *) __va(pa); } @@ -520,7 +519,7 @@ static phys_addr_t __init alloc_pmd_fixmap(uintptr_t va) return memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE); } -static phys_addr_t __init alloc_pmd_late(uintptr_t va) +static phys_addr_t __meminit alloc_pmd_late(uintptr_t va) { unsigned long vaddr; @@ -530,9 +529,8 @@ static phys_addr_t __init alloc_pmd_late(uintptr_t va) return __pa(vaddr); } -static void __init create_pmd_mapping(pmd_t *pmdp, - uintptr_t va, phys_addr_t pa, - phys_addr_t sz, pgprot_t prot) +static void __meminit create_pmd_mapping(pmd_t *pmdp, uintptr_t va, phys_addr_t pa, phys_addr_t sz, + pgprot_t prot) { pte_t *ptep; phys_addr_t pte_phys; @@ -568,7 +566,7 @@ static pud_t *__init get_pud_virt_fixmap(phys_addr_t pa) return (pud_t *)set_fixmap_offset(FIX_PUD, pa); } -static pud_t *__init get_pud_virt_late(phys_addr_t pa) +static pud_t *__meminit get_pud_virt_late(phys_addr_t pa) { return (pud_t *)__va(pa); } @@ -586,7 +584,7 @@ static phys_addr_t __init alloc_pud_fixmap(uintptr_t va) return memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE); } -static phys_addr_t alloc_pud_late(uintptr_t va) +static phys_addr_t __meminit alloc_pud_late(uintptr_t va) { unsigned long vaddr; @@ -606,7 +604,7 @@ static p4d_t *__init get_p4d_virt_fixmap(phys_addr_t pa) return (p4d_t *)set_fixmap_offset(FIX_P4D, pa); } -static p4d_t *__init get_p4d_virt_late(phys_addr_t pa) +static p4d_t *__meminit get_p4d_virt_late(phys_addr_t pa) { return (p4d_t *)__va(pa); } @@ -624,7 +622,7 @@ static phys_addr_t __init alloc_p4d_fixmap(uintptr_t va) return memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE); } -static phys_addr_t alloc_p4d_late(uintptr_t va) +static phys_addr_t __meminit alloc_p4d_late(uintptr_t va) { unsigned long vaddr; @@ -633,9 +631,8 @@ static phys_addr_t alloc_p4d_late(uintptr_t va) return __pa(vaddr); } -static void __init create_pud_mapping(pud_t *pudp, - uintptr_t va, phys_addr_t pa, - phys_addr_t sz, pgprot_t prot) +static void __meminit create_pud_mapping(pud_t *pudp, uintptr_t va, phys_addr_t pa, phys_addr_t sz, + pgprot_t prot) { pmd_t *nextp; phys_addr_t next_phys; @@ -660,9 +657,8 @@ static void __init create_pud_mapping(pud_t *pudp, create_pmd_mapping(nextp, va, pa, sz, prot); } -static void __init create_p4d_mapping(p4d_t *p4dp, - uintptr_t va, phys_addr_t pa, - phys_addr_t sz, pgprot_t prot) +static void __meminit create_p4d_mapping(p4d_t *p4dp, uintptr_t va, phys_addr_t pa, phys_addr_t sz, + pgprot_t prot) { pud_t *nextp; phys_addr_t next_phys; @@ -718,9 +714,8 @@ static void __init create_p4d_mapping(p4d_t *p4dp, #define create_pmd_mapping(__pmdp, __va, __pa, __sz, __prot) do {} while(0) #endif /* __PAGETABLE_PMD_FOLDED */ -void __init create_pgd_mapping(pgd_t *pgdp, - uintptr_t va, phys_addr_t pa, - phys_addr_t sz, pgprot_t prot) +void __meminit create_pgd_mapping(pgd_t *pgdp, uintptr_t va, phys_addr_t pa, phys_addr_t sz, + pgprot_t prot) { pgd_next_t *nextp; phys_addr_t next_phys; @@ -745,7 +740,7 @@ void __init create_pgd_mapping(pgd_t *pgdp, create_pgd_next_mapping(nextp, va, pa, sz, prot); } -static uintptr_t __init best_map_size(phys_addr_t base, phys_addr_t size) +static uintptr_t __meminit best_map_size(phys_addr_t base, phys_addr_t size) { if (!(base & (PGDIR_SIZE - 1)) && size >= PGDIR_SIZE) return PGDIR_SIZE; @@ -778,7 +773,7 @@ asmlinkage void __init __copy_data(void) #endif #ifdef CONFIG_STRICT_KERNEL_RWX -static __init pgprot_t pgprot_from_va(uintptr_t va) +static __meminit pgprot_t pgprot_from_va(uintptr_t va) { if (is_va_kernel_text(va)) return PAGE_KERNEL_READ_EXEC; @@ -805,7 +800,7 @@ void mark_rodata_ro(void) debug_checkwx(); } #else -static __init pgprot_t pgprot_from_va(uintptr_t va) +static __meminit pgprot_t pgprot_from_va(uintptr_t va) { if (IS_ENABLED(CONFIG_64BIT) && !is_kernel_mapping(va)) return PAGE_KERNEL;