From patchwork Thu Dec 3 08:57:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinyang He X-Patchwork-Id: 11948261 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,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 978EFC83014 for ; Thu, 3 Dec 2020 08:58:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5BB6C2223C for ; Thu, 3 Dec 2020 08:58:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387756AbgLCI6f (ORCPT ); Thu, 3 Dec 2020 03:58:35 -0500 Received: from mail.loongson.cn ([114.242.206.163]:33520 "EHLO loongson.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728037AbgLCI6e (ORCPT ); Thu, 3 Dec 2020 03:58:34 -0500 Received: from bogon.localdomain (unknown [113.200.148.30]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9Dx73+LqMhf01sZAA--.41290S4; Thu, 03 Dec 2020 16:57:49 +0800 (CST) From: Jinyang He To: Thomas Bogendoerfer , Huacai Chen , Jiaxun Yang Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] MIPS: Add fix_range_node after parse "mem=" parameter Date: Thu, 3 Dec 2020 16:57:47 +0800 Message-Id: <1606985867-9791-3-git-send-email-hejinyang@loongson.cn> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1606985867-9791-1-git-send-email-hejinyang@loongson.cn> References: <1606985867-9791-1-git-send-email-hejinyang@loongson.cn> X-CM-TRANSID: AQAAf9Dx73+LqMhf01sZAA--.41290S4 X-Coremail-Antispam: 1UD129KBjvJXoWxZrW5Zr1rWr1kXr18AryDAwb_yoW5Wry3pa 9rAas5Gr4DWFn7Za4ft348urWrAws5KFWfuay7Cr95Z3ZIqr9rJr4SqF15Zr1jqrWrK3WF vF10g3y29a12kaUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUBYb7Iv0xC_Kw4lb4IE77IF4wAFF20E14v26ryj6rWUM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI 8067AKxVWUXwA2048vs2IY020Ec7CjxVAFwI0_JFI_Gr1l8cAvFVAK0II2c7xJM28CjxkF 64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW7JVWDJwA2z4x0Y4vE2Ix0cI8IcV CY1x0267AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv 6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c 02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVW8JVWxJwAm72CE 4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lc2xSY4AK67AK6r43MxAIw28IcxkI7V AKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCj r7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6x IIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAI w20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x 0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IUY8sqtUUUUU== X-CM-SenderInfo: pkhmx0p1dqwqxorr0wxvrqhubq/ Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org This problem may only occur on NUMA platforms. When machine start with the "mem=" parameter on Loongson64, it cannot boot. When parsing the "mem=" parameter, first all the RAM was removed, and then the memory was not added by memblock_add_node(), which caused the newly added memory to be on MAX_NUMNODES. The key to solve this problem is to fix these memory nodes through memblock_set_node() before bootmem_init() or earlier. So it would be better to fix it before check_kernel_sections_mem(). The check_kernel_sections_mem() will check whether the current RAM can be used by the kernel. If this fix is added after that, it will do a redundant memblock_add operation. Adding the fixup_region_node() function can also provide a reference for future platforms using NUMA when encountering such problems. Signed-off-by: Jinyang He --- arch/mips/include/asm/bootinfo.h | 1 + arch/mips/kernel/setup.c | 6 +++++- arch/mips/loongson64/numa.c | 11 +++++++++++ 3 files changed, 17 insertions(+), 1 deletion(-) diff --git a/arch/mips/include/asm/bootinfo.h b/arch/mips/include/asm/bootinfo.h index aa03b12..ddc17b1 100644 --- a/arch/mips/include/asm/bootinfo.h +++ b/arch/mips/include/asm/bootinfo.h @@ -91,6 +91,7 @@ const char *get_system_type(void); extern unsigned long mips_machtype; extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max); +extern void fixup_region_node(void); extern void prom_init(void); extern void prom_free_prom_memory(void); diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index b3a711e..fe93882 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -110,6 +110,8 @@ void __init detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_add memblock_add(start, size); } +void __weak fixup_region_node(void) {} + /* * Manage initrd */ @@ -631,8 +633,10 @@ static void __init arch_mem_init(char **cmdline_p) parse_early_param(); - if (usermem) + if (usermem) { pr_info("User-defined physical RAM map overwrite\n"); + fixup_region_node(); + } check_kernel_sections_mem(); diff --git a/arch/mips/loongson64/numa.c b/arch/mips/loongson64/numa.c index c6f0c48..d8661cc 100644 --- a/arch/mips/loongson64/numa.c +++ b/arch/mips/loongson64/numa.c @@ -220,6 +220,17 @@ void __init mem_init(void) mem_init_print_info(NULL); } +void __init fixup_region_node(void) +{ + phys_addr_t start, end; + u64 i; + + for_each_mem_range(i, &start, &end) { + memblock_set_node(start, end - start, + &memblock.memory, pa_to_nid(start)); + } +} + /* All PCI device belongs to logical Node-0 */ int pcibus_to_node(struct pci_bus *bus) {