From patchwork Tue Aug 13 20:11:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 1146645 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 467PV667cgz9sDQ for ; Wed, 14 Aug 2019 06:30:22 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=c-s.fr header.i=@c-s.fr header.b="JmAbr5Mo"; dkim-atps=neutral Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 467PV65FG6zDqJN for ; Wed, 14 Aug 2019 06:30:22 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=c-s.fr (client-ip=93.17.236.30; helo=pegase1.c-s.fr; envelope-from=christophe.leroy@c-s.fr; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=c-s.fr header.i=@c-s.fr header.b="JmAbr5Mo"; dkim-atps=neutral Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 467P4l6nh0zDqNF for ; Wed, 14 Aug 2019 06:11:51 +1000 (AEST) Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 467P4W3T5fz9v0CQ; Tue, 13 Aug 2019 22:11:39 +0200 (CEST) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=JmAbr5Mo; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id Myi4YRIYF-B0; Tue, 13 Aug 2019 22:11:39 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 467P4W2LHXz9v0CM; Tue, 13 Aug 2019 22:11:39 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1565727099; bh=BzfqDe0EFbhH8rVq4zZCletoPvFTHtiBN7yf0nX9ga0=; h=In-Reply-To:References:From:Subject:To:Cc:Date:From; b=JmAbr5MoXjjC6E/iRe+EOErk6epFjABJTrPkUkGEiusbd3rLXcRPRrKC7sOND1NYI 6Se3U/B3A95dz6FhHjsZkFxQvXfl9rcs0c4cO6ELPDKFDugPST5ajr8PEB+N0shG0s bHx8of6yxzvlgvmOLcyuvGvH7mZ2j8V21j/r1jFM= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 757D08B7F2; Tue, 13 Aug 2019 22:11:39 +0200 (CEST) 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 Lqf9J6CVNTbe; Tue, 13 Aug 2019 22:11:39 +0200 (CEST) Received: from pc17473vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 36F158B7F0; Tue, 13 Aug 2019 22:11:39 +0200 (CEST) Received: by pc17473vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 1B1AF69632; Tue, 13 Aug 2019 20:11:39 +0000 (UTC) Message-Id: <9f2104e23cc4992dc8ed5c599038f829ae50abbb.1565726867.git.christophe.leroy@c-s.fr> In-Reply-To: <6bc35eca507359075528bc0e55938bc1ce8ee485.1565726867.git.christophe.leroy@c-s.fr> References: <6bc35eca507359075528bc0e55938bc1ce8ee485.1565726867.git.christophe.leroy@c-s.fr> From: Christophe Leroy Subject: [PATCH v1 06/10] powerpc/mm: make ioremap_bot common to all To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , npiggin@gmail.com Date: Tue, 13 Aug 2019 20:11:39 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Drop multiple definitions of ioremap_bot and make one common to all subarches. Signed-off-by: Christophe Leroy --- arch/powerpc/include/asm/book3s/32/pgtable.h | 2 -- arch/powerpc/include/asm/book3s/64/pgtable.h | 1 - arch/powerpc/include/asm/nohash/32/pgtable.h | 2 -- arch/powerpc/include/asm/pgtable.h | 2 ++ arch/powerpc/mm/ioremap.c | 3 +++ arch/powerpc/mm/mmu_decl.h | 1 - arch/powerpc/mm/nohash/tlb.c | 2 ++ arch/powerpc/mm/pgtable_32.c | 3 --- arch/powerpc/mm/pgtable_64.c | 3 --- 9 files changed, 7 insertions(+), 12 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index 838de59f6754..aa1bc5f8da90 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -201,8 +201,6 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot); #include #include -extern unsigned long ioremap_bot; - /* Bits to mask out from a PGD to get to the PUD page */ #define PGD_MASKED_BITS 0 diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 8308f32e9782..11819e3c755e 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -289,7 +289,6 @@ extern unsigned long __kernel_io_end; #define KERN_IO_END __kernel_io_end extern struct page *vmemmap; -extern unsigned long ioremap_bot; extern unsigned long pci_io_base; #endif /* __ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h index 0284f8f5305f..7ce2a7c9fade 100644 --- a/arch/powerpc/include/asm/nohash/32/pgtable.h +++ b/arch/powerpc/include/asm/nohash/32/pgtable.h @@ -11,8 +11,6 @@ #include /* For sub-arch specific PPC_PIN_SIZE */ #include -extern unsigned long ioremap_bot; - #ifdef CONFIG_44x extern int icache_44x_need_flush; #endif diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index c58ba7963688..c54bb68c1354 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -68,6 +68,8 @@ extern pgd_t swapper_pg_dir[]; extern void paging_init(void); +extern unsigned long ioremap_bot; + /* * kern_addr_valid is intended to indicate whether an address is a valid * kernel address. Most 32-bit archs define it as always true (like this) diff --git a/arch/powerpc/mm/ioremap.c b/arch/powerpc/mm/ioremap.c index a44d9e4c948a..0c23660522ca 100644 --- a/arch/powerpc/mm/ioremap.c +++ b/arch/powerpc/mm/ioremap.c @@ -3,6 +3,9 @@ #include #include +unsigned long ioremap_bot; +EXPORT_SYMBOL(ioremap_bot); + void __iomem *__ioremap(phys_addr_t addr, unsigned long size, unsigned long flags) { return __ioremap_caller(addr, size, __pgprot(flags), __builtin_return_address(0)); diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h index 32c1a191c28a..6ee64d5e2824 100644 --- a/arch/powerpc/mm/mmu_decl.h +++ b/arch/powerpc/mm/mmu_decl.h @@ -108,7 +108,6 @@ extern u8 early_hash[]; #endif /* CONFIG_PPC32 */ -extern unsigned long ioremap_bot; extern unsigned long __max_low_memory; extern phys_addr_t __initial_memory_limit_addr; extern phys_addr_t total_memory; diff --git a/arch/powerpc/mm/nohash/tlb.c b/arch/powerpc/mm/nohash/tlb.c index d4acf6fa0596..350a54f70a37 100644 --- a/arch/powerpc/mm/nohash/tlb.c +++ b/arch/powerpc/mm/nohash/tlb.c @@ -704,6 +704,8 @@ static void __init early_init_mmu_global(void) * for use by the TLB miss code */ linear_map_top = memblock_end_of_DRAM(); + + ioremap_bot = IOREMAP_END; } static void __init early_mmu_set_memory_limit(void) diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 8126c2d1afbf..7efdb1dee19b 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -33,9 +33,6 @@ #include -unsigned long ioremap_bot; -EXPORT_SYMBOL(ioremap_bot); /* aka VMALLOC_END */ - extern char etext[], _stext[], _sinittext[], _einittext[]; void __iomem * diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 0f0b1e1ea5ab..d631659c8859 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -99,9 +99,6 @@ unsigned long __pte_frag_nr; EXPORT_SYMBOL(__pte_frag_nr); unsigned long __pte_frag_size_shift; EXPORT_SYMBOL(__pte_frag_size_shift); -unsigned long ioremap_bot; -#else /* !CONFIG_PPC_BOOK3S_64 */ -unsigned long ioremap_bot = IOREMAP_END; #endif int __weak ioremap_range(unsigned long ea, phys_addr_t pa, unsigned long size, pgprot_t prot, int nid)