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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 E08E6C07E95 for ; Tue, 20 Jul 2021 02:52:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B9EBA61002 for ; Tue, 20 Jul 2021 02:52:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238042AbhGTCLv (ORCPT ); Mon, 19 Jul 2021 22:11:51 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:7397 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237337AbhGTCEF (ORCPT ); Mon, 19 Jul 2021 22:04:05 -0400 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4GTNHp4wvqz7wx5; Tue, 20 Jul 2021 10:40:54 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 20 Jul 2021 10:44:31 +0800 Received: from localhost.localdomain.localdomain (10.175.113.25) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 20 Jul 2021 10:44:30 +0800 From: Kefeng Wang To: Catalin Marinas , Will Deacon , Andrey Ryabinin , Andrey Konovalov , Dmitry Vyukov CC: , , , , Kefeng Wang Subject: [PATCH v2 0/3] arm64: support page mapping percpu first chunk allocator Date: Tue, 20 Jul 2021 10:51:02 +0800 Message-ID: <20210720025105.103680-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Percpu embedded first chunk allocator is the firstly option, but it could fails on ARM64, eg, "percpu: max_distance=0x5fcfdc640000 too large for vmalloc space 0x781fefff0000" "percpu: max_distance=0x600000540000 too large for vmalloc space 0x7dffb7ff0000" "percpu: max_distance=0x5fff9adb0000 too large for vmalloc space 0x5dffb7ff0000" then we could meet "WARNING: CPU: 15 PID: 461 at vmalloc.c:3087 pcpu_get_vm_areas+0x488/0x838", even the system could not boot successfully. Let's implement page mapping percpu first chunk allocator as a fallback to the embedding allocator to increase the robustness of the system. Also fix a crash when both NEED_PER_CPU_PAGE_FIRST_CHUNK and KASAN_VMALLOC enabled. Tested on ARM64 qemu with cmdline "percpu_alloc=page" based on v5.14-rc2. V2: - fix build error when CONFIG_KASAN disabled, found by lkp@intel.com - drop wrong __weak comment from kasan_populate_early_vm_area_shadow(), found by Marco Elver Kefeng Wang (3): vmalloc: Choose a better start address in vm_area_register_early() arm64: Support page mapping percpu first chunk allocator kasan: arm64: Fix pcpu_page_first_chunk crash with KASAN_VMALLOC arch/arm64/Kconfig | 4 ++ arch/arm64/mm/kasan_init.c | 17 ++++++++ drivers/base/arch_numa.c | 82 +++++++++++++++++++++++++++++++++----- include/linux/kasan.h | 6 +++ mm/kasan/init.c | 5 +++ mm/vmalloc.c | 9 +++-- 6 files changed, 110 insertions(+), 13 deletions(-) -- 2.26.2 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=-13.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 66759C07E9D for ; Tue, 20 Jul 2021 02:46:51 +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 2E8A36113C for ; Tue, 20 Jul 2021 02:46:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2E8A36113C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@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: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:In-Reply-To:References: List-Owner; bh=LqHaNqy5mmmSp3JwMttuEzU0Yv4xItwsr5t9DqgARYQ=; b=LgUyjSBWihkBbP cQkad8yXP3TgfIU7JABxTUFbIEfVX2yIZSXBQE0Vx2srlJJ0PkzxbPXkCJk3vDBOoX1eeaRuNtTn/ K6O0EVgYZwUXWwnB5kw0II0E3Kq6IJCifS+Dd1ldn1RdDZhL/c3HA2K7Ki9eegrl/nfCf0n6ikWZL I1ZobvMTHD/daIjjT14YsSU4X3Yq6p4YfUTRjbX8CZvGpo1h+K7Edik0Q4sTLnlRwyZ5cazORcREX E8buohe9jkO5Ex85u8plI/LIM1YYK7KFhgiPG1fkvlLnQ/dTV+/WCIPYf3uNemJ09DKrtUVsGeAgd jyArF35jJ5TQgDHAsfHg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m5fkX-00Bijc-SZ; Tue, 20 Jul 2021 02:44:50 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m5fkJ-00BihF-K4 for linux-arm-kernel@lists.infradead.org; Tue, 20 Jul 2021 02:44:37 +0000 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4GTNHp4wvqz7wx5; Tue, 20 Jul 2021 10:40:54 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 20 Jul 2021 10:44:31 +0800 Received: from localhost.localdomain.localdomain (10.175.113.25) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 20 Jul 2021 10:44:30 +0800 From: Kefeng Wang To: Catalin Marinas , Will Deacon , Andrey Ryabinin , Andrey Konovalov , Dmitry Vyukov CC: , , , , Kefeng Wang Subject: [PATCH v2 0/3] arm64: support page mapping percpu first chunk allocator Date: Tue, 20 Jul 2021 10:51:02 +0800 Message-ID: <20210720025105.103680-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210719_194435_881175_67121D8F X-CRM114-Status: UNSURE ( 8.35 ) X-CRM114-Notice: Please train this message. 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Percpu embedded first chunk allocator is the firstly option, but it could fails on ARM64, eg, "percpu: max_distance=0x5fcfdc640000 too large for vmalloc space 0x781fefff0000" "percpu: max_distance=0x600000540000 too large for vmalloc space 0x7dffb7ff0000" "percpu: max_distance=0x5fff9adb0000 too large for vmalloc space 0x5dffb7ff0000" then we could meet "WARNING: CPU: 15 PID: 461 at vmalloc.c:3087 pcpu_get_vm_areas+0x488/0x838", even the system could not boot successfully. Let's implement page mapping percpu first chunk allocator as a fallback to the embedding allocator to increase the robustness of the system. Also fix a crash when both NEED_PER_CPU_PAGE_FIRST_CHUNK and KASAN_VMALLOC enabled. Tested on ARM64 qemu with cmdline "percpu_alloc=page" based on v5.14-rc2. V2: - fix build error when CONFIG_KASAN disabled, found by lkp@intel.com - drop wrong __weak comment from kasan_populate_early_vm_area_shadow(), found by Marco Elver Kefeng Wang (3): vmalloc: Choose a better start address in vm_area_register_early() arm64: Support page mapping percpu first chunk allocator kasan: arm64: Fix pcpu_page_first_chunk crash with KASAN_VMALLOC arch/arm64/Kconfig | 4 ++ arch/arm64/mm/kasan_init.c | 17 ++++++++ drivers/base/arch_numa.c | 82 +++++++++++++++++++++++++++++++++----- include/linux/kasan.h | 6 +++ mm/kasan/init.c | 5 +++ mm/vmalloc.c | 9 +++-- 6 files changed, 110 insertions(+), 13 deletions(-) -- 2.26.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel