From patchwork Tue May 12 18:44:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 1288748 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (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 49M72p6Pk1z9sRR for ; Wed, 13 May 2020 05:21:38 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=RbLoD1c0; 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 49M72m3FF6zDqVl for ; Wed, 13 May 2020 05:21:36 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=198.145.29.99; helo=mail.kernel.org; envelope-from=rppt@kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=RbLoD1c0; dkim-atps=neutral Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (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 49M6HN06tlzDqPT for ; Wed, 13 May 2020 04:47:28 +1000 (AEST) Received: from aquarius.haifa.ibm.com (nesher1.haifa.il.ibm.com [195.110.40.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8CBA52176D; Tue, 12 May 2020 18:47:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589309244; bh=+fmiA99prmzg2eE+MWTNmdUWwV+Tf/EwzF8bxR39ag8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RbLoD1c0c1xft8ovRqkpRhPNEdQQ2gsCg4iNv0DFxfTpYshmuAbx5D62t83OCJY63 IuV9+hoOe25IcTLBIIy9ukceQ5lrKMQjlyzK6iz3/ndQIvpZGQJiTlGiay2ebGTl22 cf/ro7SOsa79hRnLsNt5RCeQz1bnCCUu4qF0SPEs= From: Mike Rapoport To: linux-kernel@vger.kernel.org Subject: [PATCH 11/12] mm: consolidate pud_index() and pud_offset() definitions Date: Tue, 12 May 2020 21:44:21 +0300 Message-Id: <20200512184422.12418-12-rppt@kernel.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200512184422.12418-1-rppt@kernel.org> References: <20200512184422.12418-1-rppt@kernel.org> MIME-Version: 1.0 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: Rich Felker , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Catalin Marinas , Heiko Carstens , Max Filippov , Guo Ren , linux-csky@vger.kernel.org, sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, Vincent Chen , Will Deacon , Greg Ungerer , linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Brian Cain , Helge Deller , x86@kernel.org, Russell King , Ley Foon Tan , Mike Rapoport , Ingo Molnar , Geert Uytterhoeven , linux-parisc@vger.kernel.org, Mark Salter , Matt Turner , linux-snps-arc@lists.infradead.org, linux-xtensa@linux-xtensa.org, Arnd Bergmann , linux-alpha@vger.kernel.org, linux-um@lists.infradead.org, linux-m68k@lists.linux-m68k.org, Tony Luck , Borislav Petkov , Greentime Hu , Paul Walmsley , Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Chris Zankel , Michal Simek , Thomas Bogendoerfer , Yoshinori Sato , Nick Hu , linux-mm@kvack.org, Vineet Gupta , linux-mips@vger.kernel.org, openrisc@lists.librecores.org, Thomas Gleixner , Richard Weinberger , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" , Mike Rapoport Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Mike Rapoport All architectures that have at least four-level page tables define pud_offset() as an entry in the array of PUDs indexed by the pud_index(), where pud_index() is (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1) For the most architectures the pud_offset() implementation relies on the availability of pud_page_vaddr() that converts a PUD entry value to the virtual address of the page containing PUD array. Let's use such implementation as a generic and drop most of the definitions of pud_index() and pud_offset() in files. The architectures that didn't provide pud_page_vaddr() are updated to have that defined. The generic implementation can be overridden by an architecture and this ability is currently in use by there architectures: * s390 has custom definitions of all page table accessors Signed-off-by: Mike Rapoport --- arch/arm64/include/asm/pgtable.h | 8 +++++--- arch/csky/include/asm/pgtable.h | 2 -- arch/ia64/include/asm/pgtable.h | 6 ------ arch/mips/include/asm/pgtable-32.h | 1 - arch/mips/include/asm/pgtable-64.h | 7 ------- arch/powerpc/include/asm/book3s/64/pgtable.h | 4 ---- arch/powerpc/include/asm/nohash/64/pgtable-4k.h | 4 ---- arch/s390/include/asm/pgtable.h | 1 + arch/sh/include/asm/pgtable_32.h | 2 -- arch/sh/include/asm/pgtable_64.h | 2 -- arch/sparc/include/asm/pgtable_64.h | 5 ----- arch/x86/include/asm/pgtable.h | 11 ----------- include/asm-generic/pgtable-nopud.h | 1 + include/linux/pgtable.h | 16 ++++++++++++++++ 14 files changed, 23 insertions(+), 47 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index d0175335a2f2..c0155814b374 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -626,11 +626,13 @@ static inline phys_addr_t p4d_page_paddr(p4d_t p4d) return __p4d_to_phys(p4d); } -/* Find an entry in the frst-level page table. */ -#define pud_index(addr) (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) +static inline unsigned long p4d_page_vaddr(p4d_t p4d) +{ + return (unsigned long)__va(p4d_page_paddr(p4d)); +} +/* Find an entry in the frst-level page table. */ #define pud_offset_phys(dir, addr) (p4d_page_paddr(READ_ONCE(*(dir))) + pud_index(addr) * sizeof(pud_t)) -#define pud_offset(dir, addr) ((pud_t *)__va(pud_offset_phys((dir), (addr)))) #define pud_set_fixmap(addr) ((pud_t *)set_fixmap_offset(FIX_PUD, addr)) #define pud_set_fixmap_offset(p4d, addr) pud_set_fixmap(pud_offset_phys(p4d, addr)) diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h index dc613f20e2e1..c5ab20970857 100644 --- a/arch/csky/include/asm/pgtable.h +++ b/arch/csky/include/asm/pgtable.h @@ -220,8 +220,6 @@ static inline pte_t pte_mkyoung(pte_t pte) return pte; } -#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) - /* to find an entry in a kernel page-table-directory */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h index d75d981e6ee1..4c24e5e18bff 100644 --- a/arch/ia64/include/asm/pgtable.h +++ b/arch/ia64/include/asm/pgtable.h @@ -383,12 +383,6 @@ pgd_offset (const struct mm_struct *mm, unsigned long address) here. */ #define pgd_offset_gate(mm, addr) pgd_offset_k(addr) -#if CONFIG_PGTABLE_LEVELS == 4 -/* Find an entry in the second-level page table.. */ -#define pud_offset(dir,addr) \ - ((pud_t *) p4d_page_vaddr(*(dir)) + (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))) -#endif - /* atomic versions of the some PTE manipulations: */ static inline int diff --git a/arch/mips/include/asm/pgtable-32.h b/arch/mips/include/asm/pgtable-32.h index 05b51c344939..9c0e7a5ffc75 100644 --- a/arch/mips/include/asm/pgtable-32.h +++ b/arch/mips/include/asm/pgtable-32.h @@ -199,7 +199,6 @@ static inline pte_t pfn_pte(unsigned long pfn, pgprot_t prot) #define pgd_offset_k(address) pgd_offset(&init_mm, address) #define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1)) -#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) /* to find an entry in a page-table-directory */ #define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr)) diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h index 21fb55510d35..38170fdac5bf 100644 --- a/arch/mips/include/asm/pgtable-64.h +++ b/arch/mips/include/asm/pgtable-64.h @@ -172,8 +172,6 @@ extern pte_t invalid_pte_table[PTRS_PER_PTE]; -#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) - #ifndef __PAGETABLE_PUD_FOLDED /* * For 4-level pagetables we defines these ourselves, for 3-level the @@ -222,11 +220,6 @@ static inline unsigned long p4d_page_vaddr(p4d_t p4d) #define p4d_index(address) (((address) >> P4D_SHIFT) & (PTRS_PER_P4D - 1)) -static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) -{ - return (pud_t *)p4d_page_vaddr(*p4d) + pud_index(address); -} - static inline void set_p4d(p4d_t *p4d, p4d_t p4dval) { *p4d = p4dval; diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index fbb5d12c6214..fffe28d52c02 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -1009,7 +1009,6 @@ extern struct page *p4d_page(p4d_t p4d); #define p4d_page_vaddr(p4d) __va(p4d_val(p4d) & ~P4D_MASKED_BITS) #define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1)) -#define pud_index(address) (((address) >> (PUD_SHIFT)) & (PTRS_PER_PUD - 1)) /* * Find an entry in a page-table-directory. We combine the address region @@ -1018,9 +1017,6 @@ extern struct page *p4d_page(p4d_t p4d); #define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) -#define pud_offset(p4dp, addr) \ - (((pud_t *) p4d_page_vaddr(*(p4dp))) + pud_index(addr)) - /* to find an entry in a kernel page-table-directory */ /* This now only contains the vmalloc pages */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) diff --git a/arch/powerpc/include/asm/nohash/64/pgtable-4k.h b/arch/powerpc/include/asm/nohash/64/pgtable-4k.h index 81b1c54e3cf1..fe2f4c9acd9e 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable-4k.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable-4k.h @@ -78,10 +78,6 @@ extern struct page *p4d_page(p4d_t p4d); #endif /* !__ASSEMBLY__ */ -#define pud_offset(p4dp, addr) \ - (((pud_t *) p4d_page_vaddr(*(p4dp))) + \ - (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))) - #define pud_ERROR(e) \ pr_err("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pud_val(e)) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index c162e50c7689..e1eef67a0877 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -1274,6 +1274,7 @@ static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) return (pud_t *) p4d_deref(*p4d) + pud_index(address); return (pud_t *) p4d; } +#define pud_offset pud_offset static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address) { diff --git a/arch/sh/include/asm/pgtable_32.h b/arch/sh/include/asm/pgtable_32.h index 3023943ce731..ccc032e89f75 100644 --- a/arch/sh/include/asm/pgtable_32.h +++ b/arch/sh/include/asm/pgtable_32.h @@ -415,8 +415,6 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd) /* to find an entry in a kernel page-table-directory */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) -#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) - #ifdef CONFIG_X2TLB #define pte_ERROR(e) \ printk("%s:%d: bad pte %p(%08lx%08lx).\n", __FILE__, __LINE__, \ diff --git a/arch/sh/include/asm/pgtable_64.h b/arch/sh/include/asm/pgtable_64.h index 8d5948f92caf..60aef1191784 100644 --- a/arch/sh/include/asm/pgtable_64.h +++ b/arch/sh/include/asm/pgtable_64.h @@ -51,8 +51,6 @@ static __inline__ void set_pte(pte_t *pteptr, pte_t pteval) /* To find an entry in a kernel PGD. */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) -#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) - /* * PMD level access routines. Same notes as above. */ diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 2da1cec60f4e..f546ea46d41b 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -896,11 +896,6 @@ static inline unsigned long pud_pfn(pud_t pud) /* to find an entry in a kernel page-table-directory */ #define pgd_offset_k(address) pgd_offset(&init_mm, address) -/* Find an entry in the third-level page table.. */ -#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) -#define pud_offset(p4dp, address) \ - ((pud_t *) p4d_page_vaddr(*(p4dp)) + pud_index(address)) - /* We cannot include at this point yet: */ extern struct mm_struct init_mm; diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 35e3bf86df20..97efdc62e740 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -895,11 +895,6 @@ static inline int pud_large(pud_t pud) } #endif /* CONFIG_PGTABLE_LEVELS > 2 */ -static inline unsigned long pud_index(unsigned long address) -{ - return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1); -} - #if CONFIG_PGTABLE_LEVELS > 3 static inline int p4d_none(p4d_t p4d) { @@ -922,12 +917,6 @@ static inline unsigned long p4d_page_vaddr(p4d_t p4d) */ #define p4d_page(p4d) pfn_to_page(p4d_pfn(p4d)) -/* Find an entry in the third-level page table.. */ -static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) -{ - return (pud_t *)p4d_page_vaddr(*p4d) + pud_index(address); -} - static inline int p4d_bad(p4d_t p4d) { unsigned long ignore_flags = _KERNPG_TABLE | _PAGE_USER; diff --git a/include/asm-generic/pgtable-nopud.h b/include/asm-generic/pgtable-nopud.h index ad05c1684bfc..a9d751fbda9e 100644 --- a/include/asm-generic/pgtable-nopud.h +++ b/include/asm-generic/pgtable-nopud.h @@ -43,6 +43,7 @@ static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) { return (pud_t *)p4d; } +#define pud_offset pud_offset #define pud_val(x) (p4d_val((x).p4d)) #define __pud(x) ((pud_t) { __p4d(x) }) diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 14cfeb3443c5..3a78ef38eda6 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -53,6 +53,14 @@ static inline unsigned long pmd_index(unsigned long address) #define pmd_index pmd_index #endif +#ifndef pud_index +static inline unsigned long pud_index(unsigned long address) +{ + return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1); +} +#define pud_index pud_index +#endif + #ifndef pte_offset_kernel static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address) { @@ -80,6 +88,14 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address) #define pmd_offset pmd_offset #endif +#ifndef pud_offset +static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address) +{ + return (pud_t *)p4d_page_vaddr(*p4d) + pud_index(address); +} +#define pud_offset pud_offset +#endif + /* FIXME: */ static inline pmd_t *pmd_off(struct mm_struct *mm, unsigned long va) {