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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4EEFCC43334 for ; Wed, 15 Jun 2022 02:05:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237284AbiFOCFB (ORCPT ); Tue, 14 Jun 2022 22:05:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34020 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230404AbiFOCE7 (ORCPT ); Tue, 14 Jun 2022 22:04:59 -0400 Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C0D983CFC2 for ; Tue, 14 Jun 2022 19:04:58 -0700 (PDT) Received: by mail-pj1-x102d.google.com with SMTP id o33-20020a17090a0a2400b001ea806e48c6so687828pjo.1 for ; Tue, 14 Jun 2022 19:04:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ZTEMzb2kbxmOG0IPL3JzkaKv5Etit65wHTgVH613vdo=; b=fEMFad+WsFNW5s4GCMXNnrGnm51i8mcLj5tEebvYOSSV2mSrZwh71Z+6oKwQ6pP9S0 X7blX5ZHMrUUA3V+dpqXCntWfyddlG312G0BGBrl3f4zi4rrYILu3Td8cGEhPe+PeIHz SIy0pgZzazC4YpYJHyH+hjVOJjjDW2gY2vT1c5Aw34yUclx7QoIdavhWV1XF+pInqmTt vX8D057nm1gCKYBXo8xjPhjdvGJJmwD6mrtmgmqXDUp0yxx04dVKuig5ZhvYVSX2+Kub D3YNpIqgIdaNzvEqZCmfrKTfj5U7HpmRK/O2f/gR5aPRXgXuXK7b/lk0Izu2Jnl+hrw/ 9OHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ZTEMzb2kbxmOG0IPL3JzkaKv5Etit65wHTgVH613vdo=; b=JaPp0rLqH1jo4GJnIHkzw0cxs54h364By0GzQN45lwttZqJBvPyHpSMIuAObmC57qx rquwnFfrol5akc1n1+bkXBGdnueibdOu0nz/8cBUrrfCwD5GjwYzjmu/805JYpyIamQR j9XqueQ8r0l5mW10Hf37KEgShQdxBSfL35PrfWG/FVOpFkillTQCe8k4lzdPBi+HBtq5 MWQK7gG+rPT2GMnAYstul2VYY+LTx62OvollcqkWoITCNPgcJ4tNvPTekMOoYbusQUK8 ve5TCOOIE86AaxcEvWjdYfoDGCjFjkHY09KMEdLWc72bFtNDm1vcLN0haCtc8I0Hf8yS tvdQ== X-Gm-Message-State: AJIora8WtsN8ozaj5bxpJoCiP51x27RXJxsDMq2kD5OEcy80dkOWc+PN 4Wc8ZtjojAd5wERmpHWJqJcn0QfEuDp84A== X-Google-Smtp-Source: AGRyM1uJyUuCwXbIFrRgLXDqQaPfg7gcua0Z8rHf5H2q6M1easfzctdebPrsI2SuOMxgkyUcoVbo7w== X-Received: by 2002:a17:902:7806:b0:168:d336:dda9 with SMTP id p6-20020a170902780600b00168d336dda9mr7054423pll.83.1655258698239; Tue, 14 Jun 2022 19:04:58 -0700 (PDT) Received: from always-x1.bytedance.net ([61.120.150.70]) by smtp.gmail.com with ESMTPSA id f17-20020aa79691000000b00518d06efbc8sm8538290pfk.98.2022.06.14.19.04.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Jun 2022 19:04:57 -0700 (PDT) From: zhenwei pi To: pizhenwei@bytedance.com, naoya.horiguchi@nec.com, akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, david@redhat.com, linmiaohe@huawei.com, gregkh@linuxfoundation.org Subject: [PATCH v5 0/1] mm/memory-failure: don't allow to unpoison hw corrupted page Date: Wed, 15 Jun 2022 10:00:04 +0800 Message-Id: <20220615020005.246295-1-pizhenwei@bytedance.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org v4 -> v5: - Add mf_flags 'MF_SW_SIMULATED' to distinguish SW/HW memory failure, and use a global variable to record HW memory failure, once HW memory failure happens, disable unpoison. v3 -> v4: - Add debug entry "hwpoisoned-pages" to show the number of hwpoisoned pages. - Disable unpoison when a read HW memory failure occurs. v2 -> v3: - David pointed out that virt_to_kpte() is broken(no pmd_large() test on a PMD), so drop this API in this patch, walk kmap instead. v1 -> v2: - this change gets protected by mf_mutex - use -EOPNOTSUPP instead of -EPERM v1: - check KPTE to avoid to unpoison hardware corrupted page zhenwei pi (1): mm/memory-failure: disable unpoison once hw error happens Documentation/vm/hwpoison.rst | 3 ++- drivers/base/memory.c | 2 +- include/linux/mm.h | 1 + mm/hwpoison-inject.c | 2 +- mm/madvise.c | 2 +- mm/memory-failure.c | 12 ++++++++++++ 6 files changed, 18 insertions(+), 4 deletions(-) -- 2.20.1