From patchwork Thu Aug 12 06:59:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 12432693 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=-17.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 B5E83C4338F for ; Thu, 12 Aug 2021 07:01:46 +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 7503A60EB2 for ; Thu, 12 Aug 2021 07:01:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7503A60EB2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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=hxW/VLpdZjdeh2DmedSdbik7G1/99jU8thgSgE7YzN0=; b=hrmdl4qQDoWNW/ 7pKg7ZJbLhYCnNSb9/RLMkjV6dUg1TWbqBCoz3lrbWPREAYagkglsH6SEMBbUTGf7KbEyBmYi9Ztu LYiS49hx/r4zNYSSv6SnvvIpFDg0xFMzdiEX4C3pj2CrTWXqq84OCJJzZoI3GOQrLCD1PVL1u7yVI H4inrD0Ad7snO9BerRgDuuESA2iqlkwt7C9AzgM6QGjbqjhtFT5g3LkeC1aAQZGHwWl0NrBbEiumy Oeiv1ePuhgfk1KayAaeXXcsNrLkXGJJXcJOjRhEfSXt9VPR8WmRlKm4dSziwp8ZnI7uscsIKkRUBG zGXlnIYlf/1/G0FncHiA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mE4gj-008oNk-Vm; Thu, 12 Aug 2021 06:59:38 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mE4gc-008oLa-FQ; Thu, 12 Aug 2021 06:59:33 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 380286101E; Thu, 12 Aug 2021 06:59:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628751569; bh=ZQav6dV8arUW7JrdFYQDuwE6wrSwrjaeQEiFGD8y5Ow=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ub06Kjl0JOvhrwSvBoL2gmy7C5V9LcaLfJX4yihafiq4jwaM9ed18Mqq07gCxmmRc dBUACRxsjGNMUuPesEXB4NM6qhtbBc3iff2dr+pWlD3uXacnNjvXrSXOv2GQeEZaQk T5EjPvN6qf91Si5gNiyLWnmmqBhSVLnbq0cD1UTlLeu8DwjjPJIufFz/H/4NiX3LdV 098Di3iHP3zb+sqspU8kt0rfVgMlCmHe6Mbha1VoXncA3Ntyr0cfpysaIXYyiVNUNf vyT317LfJl4oR3bkN1wEHq7OrIKJEGS3w+j+XOUsNEphrtv2u0D2L1lGU/XncCVEfF bZZ9cTh4OS0cw== From: Mike Rapoport To: Andrew Morton Cc: Albert Ou , Andy Lutomirski , Borislav Petkov , Catalin Marinas , Christian Borntraeger , Dave Hansen , Frank Rowand , Greg Kroah-Hartman , Guenter Roeck , "H. Peter Anvin" , Heiko Carstens , Ingo Molnar , "Kirill A. Shutemov" , Len Brown , Marc Zyngier , Mike Rapoport , 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: [PATCH v4 1/2] x86/mm: memory_map_top_down: remove spurious reservation of upper 2M Date: Thu, 12 Aug 2021 09:59:06 +0300 Message-Id: <20210812065907.20046-2-rppt@kernel.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210812065907.20046-1-rppt@kernel.org> References: <20210812065907.20046-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210811_235930_621908_F7B2F5A7 X-CRM114-Status: GOOD ( 18.19 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Mike Rapoport memory_map_top_down() function skips the upper 2M in the beginning and maps them in the end because "xen has big range in reserved near end of ram, skip it at first" It appears, though, that the root cause was that there was not enough memory in the range [min_pfn_mapped, max_pfn_mapped] to allocate page tables from that range in alloc_low_pages() because min_pfn_mapped didn't reflect that actual minimal pfn that was already mapped but remained close to the end of the range being mapped by memory_map_top_down(). This happened because min_pfn_mapped is updated at every iteration of the loop in memory_map_top_down(), but there is another loop in init_range_memory_mapping() that maps several regions below the current min_pfn_mapped without updating this variable. Move the update of min_pfn_mapped to add_pfn_range_mapped() next to the update of max_pfn_mapped so that every time a new range is mapped both limits will be updated accordingly, and remove the spurious "reservation" of upper 2M. Signed-off-by: Mike Rapoport --- arch/x86/mm/init.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 75ef19aa8903..87150961fdca 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -486,6 +486,7 @@ static void add_pfn_range_mapped(unsigned long start_pfn, unsigned long end_pfn) nr_pfn_mapped = clean_sort_range(pfn_mapped, E820_MAX_ENTRIES); max_pfn_mapped = max(max_pfn_mapped, end_pfn); + min_pfn_mapped = min(min_pfn_mapped, start_pfn); if (start_pfn < (1UL<<(32-PAGE_SHIFT))) max_low_pfn_mapped = max(max_low_pfn_mapped, @@ -605,20 +606,14 @@ static unsigned long __init get_new_step_size(unsigned long step_size) static void __init memory_map_top_down(unsigned long map_start, unsigned long map_end) { - unsigned long real_end, last_start; - unsigned long step_size; - unsigned long addr; + unsigned long real_end = ALIGN_DOWN(map_end, PMD_SIZE); + unsigned long last_start = real_end; + /* step_size need to be small so pgt_buf from BRK could cover it */ + unsigned long step_size = PMD_SIZE; unsigned long mapped_ram_size = 0; - /* xen has big range in reserved near end of ram, skip it at first.*/ - addr = memblock_find_in_range(map_start, map_end, PMD_SIZE, PMD_SIZE); - real_end = addr + PMD_SIZE; - - /* step_size need to be small so pgt_buf from BRK could cover it */ - step_size = PMD_SIZE; max_pfn_mapped = 0; /* will get exact value next */ min_pfn_mapped = real_end >> PAGE_SHIFT; - last_start = real_end; /* * We start from the top (end of memory) and go to the bottom. @@ -638,7 +633,6 @@ static void __init memory_map_top_down(unsigned long map_start, mapped_ram_size += init_range_memory_mapping(start, last_start); last_start = start; - min_pfn_mapped = last_start >> PAGE_SHIFT; if (mapped_ram_size >= step_size) step_size = get_new_step_size(step_size); } From patchwork Thu Aug 12 06:59:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 12432697 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=-17.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 7F8D1C4338F for ; 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b=CBVrrInwhu3Gbs4JU3NVC4gihppGoA3v3AZ/W01Jd3G/vpGy+Ei+EekpkJBxApK5Y 6wE9tSVZ5rEspkVpWaOz0SYZnpnPTZ6B+wuajnkfbEENMblaqP21B3lvQoxsnaaQmL ubmiXl8RkBehYZ00VQHY/Ga8oBYUrwo/3GLZUtEG+aaf5sTlBnyQxc49kPhNXMiRN0 aidtvqnYp7Ub7PqzwO0PQluaSNJyNU+UyjR1PR9oDBxEcp7h4FPY+OMI8OBZNT6BWw emQszHp1m8fTscqaEicwe0CTF1WdzRjo7eQMXY4zSFxF2fCZmG/dcf/OHyTIb3iHK+ EDcRHrVGIWBkQ== From: Mike Rapoport To: Andrew Morton Cc: Albert Ou , Andy Lutomirski , Borislav Petkov , Catalin Marinas , Christian Borntraeger , Dave Hansen , Frank Rowand , Greg Kroah-Hartman , Guenter Roeck , "H. Peter Anvin" , Heiko Carstens , Ingo Molnar , "Kirill A. Shutemov" , Len Brown , Marc Zyngier , Mike Rapoport , 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, "Kirill A . Shutemov" , "Rafael J . Wysocki" , Russell King , Nick Kossifidis Subject: [PATCH v4 2/2] memblock: make memblock_find_in_range method private Date: Thu, 12 Aug 2021 09:59:07 +0300 Message-Id: <20210812065907.20046-3-rppt@kernel.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210812065907.20046-1-rppt@kernel.org> References: <20210812065907.20046-1-rppt@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210811_235941_643694_E0F06DD9 X-CRM114-Status: GOOD ( 25.28 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 Acked-by: Kirill A. Shutemov Acked-by: Rafael J. Wysocki Acked-by: Russell King (Oracle) Acked-by: Nick Kossifidis Reviewed-by: Catalin Marinas --- arch/arm/kernel/setup.c | 20 +++++--------- 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 | 11 ++++---- 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, 71 insertions(+), 116 deletions(-) diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index f97eb2371672..284a80c0b6e1 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); - if (start != crash_base) { + start = memblock_phys_alloc_range(crash_size, SECTION_SIZE, + crash_base, crash_max); + if (!start) { 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..0bffd2d1854f 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 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); diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index ff0f9e838916..3d9efee0f43c 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -626,8 +626,9 @@ static void __init reserve_crashkernel(void) return; } low = crash_base ?: low; - crash_base = memblock_find_in_range(low, high, crash_size, - KEXEC_CRASH_MEM_ALIGN); + crash_base = memblock_phys_alloc_range(crash_size, + KEXEC_CRASH_MEM_ALIGN, + low, high); } if (!crash_base) { @@ -636,14 +637,15 @@ static void __init reserve_crashkernel(void) return; } - if (register_memory_notifier(&kdump_mem_nb)) + if (register_memory_notifier(&kdump_mem_nb)) { + memblock_free(crash_base, crash_size); return; + } if (!OLDMEM_BASE && MACHINE_IS_VM) diag10_range(PFN_DOWN(crash_base), PFN_DOWN(crash_size)); crashk_res.start = crash_base; crashk_res.end = crash_base + crash_size - 1; - memblock_remove(crash_base, crash_size); pr_info("Reserving %lluMB of memory at %lluMB " "for crashkernel (System RAM: %luMB)\n", crash_size >> 20, crash_base >> 20, diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c index 294ed4392a0e..10562885f5fc 100644 --- a/arch/x86/kernel/aperture_64.c +++ b/arch/x86/kernel/aperture_64.c @@ -109,14 +109,13 @@ static u32 __init allocate_aperture(void) * memory. Unfortunately we cannot move it up because that would * make the IOMMU useless. */ - addr = memblock_find_in_range(GART_MIN_ADDR, GART_MAX_ADDR, - aper_size, aper_size); + addr = memblock_phys_alloc_range(aper_size, aper_size, + GART_MIN_ADDR, GART_MAX_ADDR); if (!addr) { pr_err("Cannot allocate aperture memory hole [mem %#010lx-%#010lx] (%uKB)\n", addr, addr + aper_size - 1, aper_size >> 10); return 0; } - memblock_reserve(addr, aper_size); pr_info("Mapping aperture over RAM [mem %#010lx-%#010lx] (%uKB)\n", addr, addr + aper_size - 1, aper_size >> 10); register_nosave_region(addr >> PAGE_SHIFT, diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 87150961fdca..18ed4332d707 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -26,6 +26,7 @@ #include #include #include +#include /* * We need to define the tracepoints somewhere, and tlb.c @@ -127,14 +128,12 @@ __ref void *alloc_low_pages(unsigned int num) unsigned long ret = 0; if (min_pfn_mapped < max_pfn_mapped) { - ret = memblock_find_in_range( + ret = memblock_phys_alloc_range( + PAGE_SIZE * num, PAGE_SIZE, min_pfn_mapped << PAGE_SHIFT, - max_pfn_mapped << PAGE_SHIFT, - PAGE_SIZE * num , PAGE_SIZE); + max_pfn_mapped << PAGE_SHIFT); } - if (ret) - memblock_reserve(ret, PAGE_SIZE * num); - else if (can_use_brk_pgt) + if (!ret && can_use_brk_pgt) ret = __pa(extend_brk(PAGE_SIZE * num, PAGE_SIZE)); if (!ret) diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index e94da744386f..a1b5c71099e6 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -376,15 +376,14 @@ static int __init numa_alloc_distance(void) cnt++; size = cnt * cnt * sizeof(numa_distance[0]); - phys = memblock_find_in_range(0, PFN_PHYS(max_pfn_mapped), - size, PAGE_SIZE); + phys = memblock_phys_alloc_range(size, PAGE_SIZE, 0, + PFN_PHYS(max_pfn_mapped)); if (!phys) { pr_warn("Warning: can't allocate distance table!\n"); /* don't retry until explicitly reset */ numa_distance = (void *)1LU; return -ENOMEM; } - memblock_reserve(phys, size); numa_distance = __va(phys); numa_distance_cnt = cnt; diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c index 87d77cc52f86..737491b13728 100644 --- a/arch/x86/mm/numa_emulation.c +++ b/arch/x86/mm/numa_emulation.c @@ -447,13 +447,12 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt) if (numa_dist_cnt) { u64 phys; - phys = memblock_find_in_range(0, PFN_PHYS(max_pfn_mapped), - phys_size, PAGE_SIZE); + phys = memblock_phys_alloc_range(phys_size, PAGE_SIZE, 0, + PFN_PHYS(max_pfn_mapped)); if (!phys) { pr_warn("NUMA: Warning: can't allocate copy of distance table, disabling emulation\n"); goto no_emu; } - memblock_reserve(phys, phys_size); phys_dist = __va(phys); for (i = 0; i < numa_dist_cnt; i++) diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c index 6534c92d0f83..31b5856010cb 100644 --- a/arch/x86/realmode/init.c +++ b/arch/x86/realmode/init.c @@ -28,7 +28,7 @@ void __init reserve_real_mode(void) WARN_ON(slab_is_available()); /* Has to be under 1M so we can execute real-mode AP code. */ - mem = memblock_find_in_range(0, 1<<20, size, PAGE_SIZE); + mem = memblock_phys_alloc_range(size, PAGE_SIZE, 0, 1<<20); if (!mem) pr_info("No sub-1M memory is available for the trampoline\n"); else diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index a37a1532a575..f9383736fa0f 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -583,8 +583,8 @@ void __init acpi_table_upgrade(void) } acpi_tables_addr = - memblock_find_in_range(0, ACPI_TABLE_UPGRADE_MAX_PHYS, - all_tables_size, PAGE_SIZE); + memblock_phys_alloc_range(all_tables_size, PAGE_SIZE, + 0, ACPI_TABLE_UPGRADE_MAX_PHYS); if (!acpi_tables_addr) { WARN_ON(1); return; @@ -599,7 +599,6 @@ void __init acpi_table_upgrade(void) * Both memblock_reserve and e820__range_add (via arch_reserve_mem_area) * works fine. */ - memblock_reserve(acpi_tables_addr, all_tables_size); arch_reserve_mem_area(acpi_tables_addr, all_tables_size); /* diff --git a/drivers/base/arch_numa.c b/drivers/base/arch_numa.c index 4cc4e117727d..46c503486e96 100644 --- a/drivers/base/arch_numa.c +++ b/drivers/base/arch_numa.c @@ -279,13 +279,10 @@ static int __init numa_alloc_distance(void) int i, j; size = nr_node_ids * nr_node_ids * sizeof(numa_distance[0]); - phys = memblock_find_in_range(0, PFN_PHYS(max_pfn), - size, PAGE_SIZE); + phys = memblock_phys_alloc_range(size, PAGE_SIZE, 0, PFN_PHYS(max_pfn)); if (WARN_ON(!phys)) return -ENOMEM; - memblock_reserve(phys, size); - numa_distance = __va(phys); numa_distance_cnt = nr_node_ids; diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index fd3964d24224..59c1390cdf42 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -33,18 +33,22 @@ static int __init early_init_dt_alloc_reserved_memory_arch(phys_addr_t size, phys_addr_t *res_base) { phys_addr_t base; + int err = 0; end = !end ? MEMBLOCK_ALLOC_ANYWHERE : end; align = !align ? SMP_CACHE_BYTES : align; - base = memblock_find_in_range(start, end, size, align); + base = memblock_phys_alloc_range(size, align, start, end); if (!base) return -ENOMEM; *res_base = base; - if (nomap) - return memblock_mark_nomap(base, size); + if (nomap) { + err = memblock_mark_nomap(base, size); + if (err) + memblock_free(base, size); + } - return memblock_reserve(base, size); + return err; } /* diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 4a53c3ca86bd..b066024c62e3 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -99,8 +99,6 @@ void memblock_discard(void); static inline void memblock_discard(void) {} #endif -phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end, - phys_addr_t size, phys_addr_t align); void memblock_allow_resize(void); int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid); int memblock_add(phys_addr_t base, phys_addr_t size); diff --git a/mm/memblock.c b/mm/memblock.c index de7b553baa50..28a813d9e955 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -315,7 +315,7 @@ static phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t size, * Return: * Found address on success, 0 on failure. */ -phys_addr_t __init_memblock memblock_find_in_range(phys_addr_t start, +static phys_addr_t __init_memblock memblock_find_in_range(phys_addr_t start, phys_addr_t end, phys_addr_t size, phys_addr_t align) {