From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58203C432BE for ; Sat, 7 Aug 2021 23:40:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 337CD61057 for ; Sat, 7 Aug 2021 23:40:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230091AbhHGXk3 (ORCPT ); Sat, 7 Aug 2021 19:40:29 -0400 Received: from mailgate.ics.forth.gr ([139.91.1.2]:61380 "EHLO mailgate.ics.forth.gr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230094AbhHGXk2 (ORCPT ); Sat, 7 Aug 2021 19:40:28 -0400 X-Greylist: delayed 2067 seconds by postgrey-1.27 at vger.kernel.org; Sat, 07 Aug 2021 19:40:28 EDT Received: from av3.ics.forth.gr (av3in.ics.forth.gr [139.91.1.77]) by mailgate.ics.forth.gr (8.15.2/ICS-FORTH/V10-1.8-GATE) with ESMTP id 177N5gh7095297 for ; Sun, 8 Aug 2021 02:05:43 +0300 (EEST) DKIM-Signature: v=1; a=rsa-sha256; d=ics.forth.gr; s=av; c=relaxed/simple; q=dns/txt; i=@ics.forth.gr; t=1628377537; x=1630969537; h=From:Sender:Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=ehVNo9Zi6sdRJRX9bB3/TWxcekSmcVgfmBxE6YPsI3w=; b=Vn8KLoierPuHI8MW2ysbxFsNs0R1/d7q+WCPqL0FP1hL8/Wqy1DjHIOGF1iDgnEp ip068onKSeeJlurh58tuPFvFS6/SIMVfsQlkL4Bji7odXo3patdPYge8BN14Zna/ 86JUWEuMBm7gNd1Cjex5BiqQdjZb+oBkuVtlt4W3SzAszGa3subTJozdpBOkcDZP MIHpEk2dDINwVznQgyddcp8awdY24WmL07t3hiZI+CfyDczQWfX1COnljU/g/eH1 gxZcOO9ulb2C1V7eqTmtM4YSTSlF1g5f6LVE0Drv0KKMz+ptdpYNS/ke4hG9dvxx 2GtZ2CqaGS26bodX1D0t2w==; X-AuditID: 8b5b014d-b84f570000005d46-b6-610f11c161ba Received: from enigma.ics.forth.gr (webmail.ics.forth.gr [139.91.151.35]) by av3.ics.forth.gr (Symantec Messaging Gateway) with SMTP id A6.94.23878.1C11F016; Sun, 8 Aug 2021 02:05:37 +0300 (EEST) X-ICS-AUTH-INFO: Authenticated user: at ics.forth.gr MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Sun, 08 Aug 2021 02:05:34 +0300 From: Nick Kossifidis To: Mike Rapoport Cc: Andrew Morton , Albert Ou , Andy Lutomirski , Borislav Petkov , Catalin Marinas , Christian Borntraeger , Dave Hansen , Frank Rowand , Greg Kroah-Hartman , "H. Peter Anvin" , Heiko Carstens , Ingo Molnar , "Kirill A. Shutemov" , Len Brown , Marc Zyngier , Mike Rapoport , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , "Rafael J. Wysocki" , Rob Herring , Russell King , Thomas Bogendoerfer , Thomas Gleixner , Vasily Gorbik , Will Deacon , devicetree@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH v2] memblock: make memblock_find_in_range method private Organization: FORTH In-Reply-To: <20210802063737.22733-1-rppt@kernel.org> References: <20210802063737.22733-1-rppt@kernel.org> Message-ID: X-Sender: mick@mailhost.ics.forth.gr User-Agent: Roundcube Webmail/1.3.16 X-Brightmail-Tracker: H4sIAAAAAAAAA02Sf1CTdRzH++559jwPy8GzseQJU7qZ5+nZzAruc1ZaavJoCnbnZWdXuMsn RiFyY3LU6TkaoPxspoQ848doBR4329puDbgGbOxCiFBHt7NyHYqFCxTbEHZhEBvXHf+97v15 3+fz+uNDYVKDMJnKydNw6jxlrpwQ4ZXv1K191i1JUD4XHFgPDRYzAY45noS6S04cwtZ5AqZa qxDctZ5B0OwdFkL95AIB1/gZIehMFgImmtoRfPFtEpjPtWDw92A/CZ237hHQ1v0ZAtuYXwgj XQ0ElNscCH43Lwjhu3AJAfoWHQaeWheCq12XhdDZMCAEX69RAMGRKgzK+ATor+4VwNCPPiGU urwkeC1OAdy4oCXAbqvFoO9TNwYlN1MhYh0TvrqOnS2twdlSXxvOmpvMiB3xX8fYyWAQZ923 PQTbd3aaZDv5AMnaL21kbe3lBGsLfU6y94eHSfbKxTmc1X/Zi9imgTfZnkYzeYA5LHr5KJeb U8ipN287IlLVG8j8XzKLrn1jwLTIsa0CURRDv8j45gsrkIiS0j8gZtZvxCpQ3GKeyhhc5SjK YlrCDNTfwaOM0cDU/tyDljiF0TkMsT5Or2OK9WOxnKA3MM0+d6wvo9cys6ZubKlfvILhJ5+K ciK9jwkOm8goJ9CJTChwXRjluMW7v45eie2RLrpdqKzGlhx2MaG6B4Ilt2eYB3OjZNT/iUW2 N8r1SMIvM+WXmfLLTI0Ia0e0svAFRc77BYoPjqs1KkW22oZi/4P2d6Df7PcUHiSgkAcxFCaX iS0X45VS8VHlx59w6uNZ6hO5XIEHraJweZJYrNBnSelspYb7iOPyOfX/UwEVl6wV1PNPG8mX DFpTsPGQzP39TsmmO6tP2ncv6M4VzVc57696bHTs8qm+vYcOjpdmqsxZ0LohObjj6hrvdq1f I/mnLPHRG5E9zh0tt1wZoeffSlOlNuklJfFTp/l/WwfzxR++W5OW8soNa2Bkxhx5eHJ3w3RN +t1NCfuO+eP3q/plzZX6mYk/u3em3JwOPVp/Xl8k+Utr+urE3qSuY18nD7auxL0R0dsZ40+u TpcoTX7f0EQ483RwaOjIH6fSqJQ9Z19bk/X6rnLXe2EnFbKczwxtXoFryrYatyQGHk5VR/J0 /Nbtgx0yWx3nuC05iGUECouyO6zpjx/+abojfGCcaps707OyWI4XqJRbNmLqAuV/e64RJK4D AAA= Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Στις 2021-08-02 09:37, Mike Rapoport έγραψε: > From: Mike Rapoport > > There are a lot of uses of memblock_find_in_range() along with > memblock_reserve() from the times memblock allocation APIs did not > exist. > > memblock_find_in_range() is the very core of memblock allocations, so > any > future changes to its internal behaviour would mandate updates of all > the > users outside memblock. > > Replace the calls to memblock_find_in_range() with an equivalent calls > to > memblock_phys_alloc() and memblock_phys_alloc_range() and make > memblock_find_in_range() private method of memblock. > > This simplifies the callers, ensures that (unlikely) errors in > memblock_reserve() are handled and improves maintainability of > memblock_find_in_range(). > > Signed-off-by: Mike Rapoport > --- > v2: don't change error message in arm::reserve_crashkernel(), per > Russell > v1: https://lore.kernel.org/lkml/20210730104039.7047-1-rppt@kernel.org > > arch/arm/kernel/setup.c | 18 +++++-------- > arch/arm64/kvm/hyp/reserved_mem.c | 9 +++---- > arch/arm64/mm/init.c | 36 ++++++++----------------- > arch/mips/kernel/setup.c | 14 +++++----- > arch/riscv/mm/init.c | 44 ++++++++++--------------------- > arch/s390/kernel/setup.c | 10 ++++--- > arch/x86/kernel/aperture_64.c | 5 ++-- > arch/x86/mm/init.c | 21 +++++++++------ > arch/x86/mm/numa.c | 5 ++-- > arch/x86/mm/numa_emulation.c | 5 ++-- > arch/x86/realmode/init.c | 2 +- > drivers/acpi/tables.c | 5 ++-- > drivers/base/arch_numa.c | 5 +--- > drivers/of/of_reserved_mem.c | 12 ++++++--- > include/linux/memblock.h | 2 -- > mm/memblock.c | 2 +- > 16 files changed, 78 insertions(+), 117 deletions(-) > > diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c > index f97eb2371672..67f5421b2af7 100644 > --- a/arch/arm/kernel/setup.c > +++ b/arch/arm/kernel/setup.c > @@ -1012,31 +1012,25 @@ static void __init reserve_crashkernel(void) > unsigned long long lowmem_max = __pa(high_memory - 1) + 1; > if (crash_max > lowmem_max) > crash_max = lowmem_max; > - crash_base = memblock_find_in_range(CRASH_ALIGN, crash_max, > - crash_size, CRASH_ALIGN); > + > + crash_base = memblock_phys_alloc_range(crash_size, CRASH_ALIGN, > + CRASH_ALIGN, crash_max); > if (!crash_base) { > pr_err("crashkernel reservation failed - No suitable area > found.\n"); > return; > } > } else { > + unsigned long long crash_max = crash_base + crash_size; > unsigned long long start; > > - start = memblock_find_in_range(crash_base, > - crash_base + crash_size, > - crash_size, SECTION_SIZE); > + start = memblock_phys_alloc_range(crash_size, SECTION_SIZE, > + crash_base, crash_max); > if (start != crash_base) { > pr_err("crashkernel reservation failed - memory is in use.\n"); > return; > } > } > > - ret = memblock_reserve(crash_base, crash_size); > - if (ret < 0) { > - pr_warn("crashkernel reservation failed - memory is in use > (0x%lx)\n", > - (unsigned long)crash_base); > - return; > - } > - > pr_info("Reserving %ldMB of memory at %ldMB for crashkernel (System > RAM: %ldMB)\n", > (unsigned long)(crash_size >> 20), > (unsigned long)(crash_base >> 20), > diff --git a/arch/arm64/kvm/hyp/reserved_mem.c > b/arch/arm64/kvm/hyp/reserved_mem.c > index d654921dd09b..578670e3f608 100644 > --- a/arch/arm64/kvm/hyp/reserved_mem.c > +++ b/arch/arm64/kvm/hyp/reserved_mem.c > @@ -92,12 +92,10 @@ void __init kvm_hyp_reserve(void) > * this is unmapped from the host stage-2, and fallback to PAGE_SIZE. > */ > hyp_mem_size = hyp_mem_pages << PAGE_SHIFT; > - hyp_mem_base = memblock_find_in_range(0, memblock_end_of_DRAM(), > - ALIGN(hyp_mem_size, PMD_SIZE), > - PMD_SIZE); > + hyp_mem_base = memblock_phys_alloc(ALIGN(hyp_mem_size, PMD_SIZE), > + PMD_SIZE); > if (!hyp_mem_base) > - hyp_mem_base = memblock_find_in_range(0, memblock_end_of_DRAM(), > - hyp_mem_size, PAGE_SIZE); > + hyp_mem_base = memblock_phys_alloc(hyp_mem_size, PAGE_SIZE); > else > hyp_mem_size = ALIGN(hyp_mem_size, PMD_SIZE); > > @@ -105,7 +103,6 @@ void __init kvm_hyp_reserve(void) > kvm_err("Failed to reserve hyp memory\n"); > return; > } > - memblock_reserve(hyp_mem_base, hyp_mem_size); > > kvm_info("Reserved %lld MiB at 0x%llx\n", hyp_mem_size >> 20, > hyp_mem_base); > diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c > index 8490ed2917ff..d566478a06dd 100644 > --- a/arch/arm64/mm/init.c > +++ b/arch/arm64/mm/init.c > @@ -74,6 +74,7 @@ phys_addr_t arm64_dma_phys_limit __ro_after_init; > static void __init reserve_crashkernel(void) > { > unsigned long long crash_base, crash_size; > + unsigned long crash_max = arm64_dma_phys_limit; > int ret; > > ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(), > @@ -84,33 +85,18 @@ static void __init reserve_crashkernel(void) > > crash_size = PAGE_ALIGN(crash_size); > > - if (crash_base == 0) { > - /* Current arm64 boot protocol requires 2MB alignment */ > - crash_base = memblock_find_in_range(0, arm64_dma_phys_limit, > - crash_size, SZ_2M); > - if (crash_base == 0) { > - pr_warn("cannot allocate crashkernel (size:0x%llx)\n", > - crash_size); > - return; > - } > - } else { > - /* User specifies base address explicitly. */ > - if (!memblock_is_region_memory(crash_base, crash_size)) { > - pr_warn("cannot reserve crashkernel: region is not memory\n"); > - return; > - } > + /* User specifies base address explicitly. */ > + if (crash_base) > + crash_max = crash_base + crash_size; > > - if (memblock_is_region_reserved(crash_base, crash_size)) { > - pr_warn("cannot reserve crashkernel: region overlaps reserved > memory\n"); > - return; > - } > - > - if (!IS_ALIGNED(crash_base, SZ_2M)) { > - pr_warn("cannot reserve crashkernel: base address is not 2MB > aligned\n"); > - return; > - } > + /* Current arm64 boot protocol requires 2MB alignment */ > + crash_base = memblock_phys_alloc_range(crash_size, SZ_2M, > + crash_base, crash_max); > + if (!crash_base) { > + pr_warn("cannot allocate crashkernel (size:0x%llx)\n", > + crash_size); > + return; > } > - memblock_reserve(crash_base, crash_size); > > pr_info("crashkernel reserved: 0x%016llx - 0x%016llx (%lld MB)\n", > crash_base, crash_base + crash_size, crash_size >> 20); > diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c > index 23a140327a0b..f979adfd4fc2 100644 > --- a/arch/mips/kernel/setup.c > +++ b/arch/mips/kernel/setup.c > @@ -452,8 +452,9 @@ static void __init mips_parse_crashkernel(void) > return; > > if (crash_base <= 0) { > - crash_base = memblock_find_in_range(CRASH_ALIGN, CRASH_ADDR_MAX, > - crash_size, CRASH_ALIGN); > + crash_base = memblock_phys_alloc_range(crash_size, CRASH_ALIGN, > + CRASH_ALIGN, > + CRASH_ADDR_MAX); > if (!crash_base) { > pr_warn("crashkernel reservation failed - No suitable area > found.\n"); > return; > @@ -461,8 +462,9 @@ static void __init mips_parse_crashkernel(void) > } else { > unsigned long long start; > > - start = memblock_find_in_range(crash_base, crash_base + crash_size, > - crash_size, 1); > + start = memblock_phys_alloc_range(crash_size, 1, > + crash_base, > + crash_base + crash_size); > if (start != crash_base) { > pr_warn("Invalid memory region reserved for crash kernel\n"); > return; > @@ -656,10 +658,6 @@ static void __init arch_mem_init(char **cmdline_p) > mips_reserve_vmcore(); > > mips_parse_crashkernel(); > -#ifdef CONFIG_KEXEC > - if (crashk_res.start != crashk_res.end) > - memblock_reserve(crashk_res.start, resource_size(&crashk_res)); > -#endif > device_tree_init(); > > /* > diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c > index a14bf3910eec..88649337c568 100644 > --- a/arch/riscv/mm/init.c > +++ b/arch/riscv/mm/init.c > @@ -812,38 +812,22 @@ static void __init reserve_crashkernel(void) > > crash_size = PAGE_ALIGN(crash_size); > > - if (crash_base == 0) { > - /* > - * Current riscv boot protocol requires 2MB alignment for > - * RV64 and 4MB alignment for RV32 (hugepage size) > - */ > - crash_base = memblock_find_in_range(search_start, search_end, > - crash_size, PMD_SIZE); > - > - if (crash_base == 0) { > - pr_warn("crashkernel: couldn't allocate %lldKB\n", > - crash_size >> 10); > - return; > - } > - } else { > - /* User specifies base address explicitly. */ > - if (!memblock_is_region_memory(crash_base, crash_size)) { > - pr_warn("crashkernel: requested region is not memory\n"); > - return; > - } > - > - if (memblock_is_region_reserved(crash_base, crash_size)) { > - pr_warn("crashkernel: requested region is reserved\n"); > - return; > - } > - > + if (crash_base) { > + search_start = crash_base; > + search_end = crash_base + crash_size; > + } > > - if (!IS_ALIGNED(crash_base, PMD_SIZE)) { > - pr_warn("crashkernel: requested region is misaligned\n"); > - return; > - } > + /* > + * Current riscv boot protocol requires 2MB alignment for > + * RV64 and 4MB alignment for RV32 (hugepage size) > + */ > + crash_base = memblock_phys_alloc_range(crash_size, PMD_SIZE, > + search_start, search_end); > + if (crash_base == 0) { > + pr_warn("crashkernel: couldn't allocate %lldKB\n", > + crash_size >> 10); > + return; > } > - memblock_reserve(crash_base, crash_size); > > pr_info("crashkernel: reserved 0x%016llx - 0x%016llx (%lld MB)\n", > crash_base, crash_base + crash_size, crash_size >> 20); For the riscv part: Acked-by: Nick Kossifidis From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F634C4338F for ; Sat, 7 Aug 2021 23:06:29 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id D513660F38 for ; 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bh=ehVNo9Zi6sdRJRX9bB3/TWxcekSmcVgfmBxE6YPsI3w=; b=Vn8KLoierPuHI8MW2ysbxFsNs0R1/d7q+WCPqL0FP1hL8/Wqy1DjHIOGF1iDgnEp ip068onKSeeJlurh58tuPFvFS6/SIMVfsQlkL4Bji7odXo3patdPYge8BN14Zna/ 86JUWEuMBm7gNd1Cjex5BiqQdjZb+oBkuVtlt4W3SzAszGa3subTJozdpBOkcDZP MIHpEk2dDINwVznQgyddcp8awdY24WmL07t3hiZI+CfyDczQWfX1COnljU/g/eH1 gxZcOO9ulb2C1V7eqTmtM4YSTSlF1g5f6LVE0Drv0KKMz+ptdpYNS/ke4hG9dvxx 2GtZ2CqaGS26bodX1D0t2w==; X-AuditID: 8b5b014d-b84f570000005d46-b6-610f11c161ba Received: from enigma.ics.forth.gr (webmail.ics.forth.gr [139.91.151.35]) by av3.ics.forth.gr (Symantec Messaging Gateway) with SMTP id A6.94.23878.1C11F016; Sun, 8 Aug 2021 02:05:37 +0300 (EEST) X-ICS-AUTH-INFO: Authenticated user: at ics.forth.gr MIME-Version: 1.0 Date: Sun, 08 Aug 2021 02:05:34 +0300 From: Nick Kossifidis To: Mike Rapoport Cc: Andrew Morton , Albert Ou , Andy Lutomirski , Borislav Petkov , Catalin Marinas , Christian Borntraeger , Dave Hansen , Frank Rowand , Greg Kroah-Hartman , "H. Peter Anvin" , Heiko Carstens , Ingo Molnar , "Kirill A. Shutemov" , Len Brown , Marc Zyngier , Mike Rapoport , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , "Rafael J. Wysocki" , Rob Herring , Russell King , Thomas Bogendoerfer , Thomas Gleixner , Vasily Gorbik , Will Deacon , devicetree@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH v2] memblock: make memblock_find_in_range method private Organization: FORTH In-Reply-To: <20210802063737.22733-1-rppt@kernel.org> References: <20210802063737.22733-1-rppt@kernel.org> Message-ID: X-Sender: mick@mailhost.ics.forth.gr User-Agent: Roundcube Webmail/1.3.16 X-Brightmail-Tracker: H4sIAAAAAAAAA02Sf1CTdRzH++559jwPy8GzseQJU7qZ5+nZzAruc1ZaavJoCnbnZWdXuMsn RiFyY3LU6TkaoPxspoQ848doBR4329puDbgGbOxCiFBHt7NyHYqFCxTbEHZhEBvXHf+97v15 3+fz+uNDYVKDMJnKydNw6jxlrpwQ4ZXv1K191i1JUD4XHFgPDRYzAY45noS6S04cwtZ5AqZa qxDctZ5B0OwdFkL95AIB1/gZIehMFgImmtoRfPFtEpjPtWDw92A/CZ237hHQ1v0ZAtuYXwgj 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