From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932162Ab2KEUZQ (ORCPT ); Mon, 5 Nov 2012 15:25:16 -0500 Received: from mail-bk0-f46.google.com ([209.85.214.46]:58209 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750889Ab2KEUZO (ORCPT ); Mon, 5 Nov 2012 15:25:14 -0500 MIME-Version: 1.0 In-Reply-To: References: <1349827115-16600-1-git-send-email-yinghai@kernel.org> <20121030134442.GB27463@phenom.dumpdata.com> Date: Mon, 5 Nov 2012 12:25:12 -0800 X-Google-Sender-Auth: bHQyiHRAq_tYDtwCrakUMdRDC0s Message-ID: Subject: Re: [PATCH -v3 0/7] x86: Use BRK to pre mapping page table to make xen happy From: Yinghai Lu To: "H. Peter Anvin" , Stefano Stabellini , Konrad Rzeszutek Wilk , Andrew Morton , Jacob Shin Cc: Ingo Molnar , Thomas Gleixner , Tejun Heo , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Nov 3, 2012 at 2:37 PM, H. Peter Anvin wrote: > I am travelling at the moment... I hope to be able to look at it Sunday. >> >>can you put for-x86-mm-test to tip for more testing? >> >>or you want to rebase the whole patchset? All, please check branch that is rebased on top of 3.7-rc4. git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-x86-mm Stefano, Konrad, please check them with xen parts, and give your acked-by or Reviewed-by accordingly. Thanks Yinghai >>From 1b66ccf15ff4bd0200567e8d70446a8763f96ee7 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 5 Nov 2012 11:54:12 -0800 Subject: [PATCH v6 00/42] x86, mm: map ram from top-down with BRK and memblock. rebase patchset together tip/x86/mm2 on top of linus v3.7-rc4 so this one include patchset : x86, mm: init_memory_mapping cleanup in tip/x86/mm2 --- Current kernel init memory mapping between [0, TOML) and [4G, TOMH) Some AMD systems have mem hole between 4G and TOMH, around 1T. According to HPA, we should only mapping ram range. 1. Seperate calculate_table_space_size and find_early_page_table out with init_memory_mapping. 2. For all ranges, will allocate page table one time 3. init mapping for ram range one by one. --- pre mapping page table patcheset includes: 1. use brk to mapping first PMD_SIZE range under end of ram. 2. top down to initialize page table range by range. 3. get rid of calculate_page_table, and find_early_page_table. 4. remove early_ioremap in page table accessing. 5. remove workaround in xen to mark page RO. v2: changes, update xen interface about pagetable_reserve, so not use pgt_buf_* in xen code directly. v3: use range top-down to initialize page table, so will not use calculating/find early table anymore. also reorder the patches sequence. v4: add mapping_mark_page_ro to fix xen, also move pgt_buf_* to init.c and merge alloc_low_page(), and for 32bit need to add alloc_low_pages to fix 32bit kmap setting. v5: remove mark_page_ro workaround and add another 5 cleanup patches. v6: rebase on v3.7-rc4 and add 4 cleanup patches. could be found at: git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-x86-mm 1b66ccf: mm: Kill NO_BOOTMEM version free_all_bootmem_node() 0332736: sparc, mm: Remove calling of free_all_bootmem_node() 0f88d27: x86, mm: kill numa_64.h 10c4c68: x86, mm: kill numa_free_all_bootmem() 0187d6e: x86, mm: Let "memmap=" take more entries one time 2c20fd0: x86, mm: Use clamp_t() in init_range_memory_mapping 770db30: x86, mm: Move after_bootmem to mm_internel.h d9bd282: x86, mm: Unifying after_bootmem for 32bit and 64bit 003d654: x86, mm: use limit_pfn for end pfn 29f27b8: x86, mm: use pfn instead of pos in split_mem_range 8edaab8: x86, mm: use PFN_DOWN in split_mem_range() e652c73: x86, mm: use round_up/down in split_mem_range() 5fd1391: x86, mm: Add check before clear pte above max_low_pfn on 32bit f4fd136: x86, mm: Move function declaration into mm_internal.h ea421df: x86, mm: change low/hignmem_pfn_init to static on 32bit 867525b: x86, mm: Move init_gbpages() out of setup.c 97fb23a: x86, mm: Move back pgt_buf_* to mm/init.c ba55b2f: x86, mm: only call early_ioremap_page_table_range_init() once bb6d2d9: x86, mm: Add pointer about Xen mmu requirement for alloc_low_pages 6bc7e9f: x86, mm: Add alloc_low_pages(num) d90df25: x86, mm, Xen: Remove mapping_pagetable_reserve() f6699d2: x86, mm: Move min_pfn_mapped back to mm/init.c 675697b: x86, mm: Merge alloc_low_page between 64bit and 32bit a14a382: x86, mm: Remove parameter in alloc_low_page for 64bit a0d7a52: x86, mm: Remove early_memremap workaround for page table accessing on 64bit 384a79d: x86, mm: setup page table in top-down 16252f2: x86, mm: Break down init_all_memory_mapping 255a0bf: x86, mm: Don't clear page table if range is ram 4bc70c5: x86, mm: Use big page size for small memory range dc62aa8: x86, mm: Align start address to correct big page size 18f374c: x86: Only direct map addresses that are marked as E820_RAM 150387c: x86: Fixup code testing if a pfn is direct mapped 45cb049: x86: if kernel .text .data .bss are not marked as E820_RAM, complain and fix 8d0b8bd: x86, mm: Set memblock initial limit to 1M 6c712cf: x86, mm: Separate out calculate_table_space_size() 33b0520: x86, mm: Find early page table buffer together a95ff4b: x86, mm: Change find_early_table_space() paramters ea564f8: x86, mm: Revert back good_end setting for 64bit 912c686: x86, mm: Move init_memory_mapping calling out of setup.c 47cfa63: x86, mm: Move down find_early_table_space() 060ed6c: x86, mm: Split out split_mem_range from init_memory_mapping 2ad38b5: x86, mm: Add global page_size_mask and probe one time only arch/sparc/mm/init_64.c | 24 +- arch/x86/include/asm/init.h | 21 +-- arch/x86/include/asm/numa.h | 2 - arch/x86/include/asm/numa_64.h | 6 - arch/x86/include/asm/page_types.h | 2 + arch/x86/include/asm/pgtable.h | 2 + arch/x86/include/asm/pgtable_types.h | 1 - arch/x86/include/asm/x86_init.h | 12 - arch/x86/kernel/acpi/boot.c | 1 - arch/x86/kernel/cpu/amd.c | 9 +- arch/x86/kernel/cpu/intel.c | 1 - arch/x86/kernel/e820.c | 16 ++- arch/x86/kernel/setup.c | 70 ++---- arch/x86/kernel/x86_init.c | 4 - arch/x86/mm/init.c | 445 ++++++++++++++++++++++------------ arch/x86/mm/init_32.c | 106 +++++--- arch/x86/mm/init_64.c | 140 ++++------- arch/x86/mm/mm_internal.h | 19 ++ arch/x86/mm/numa_64.c | 13 - arch/x86/platform/efi/efi.c | 7 +- arch/x86/xen/mmu.c | 28 --- include/linux/mm.h | 1 - mm/nobootmem.c | 14 - 23 files changed, 480 insertions(+), 464 deletions(-) delete mode 100644 arch/x86/include/asm/numa_64.h create mode 100644 arch/x86/mm/mm_internal.h -- 1.7.7