Message ID | 20201009195033.3208459-45-ira.weiny@intel.com |
---|---|
State | New |
Headers | show
Return-Path: <SRS0=zmAv=DQ=vger.kernel.org=linux-mmc-owner@kernel.org> 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 BAD59C9DCA0 for <linux-mmc@archiver.kernel.org>; Fri, 9 Oct 2020 19:58:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 89DAB22267 for <linux-mmc@archiver.kernel.org>; Fri, 9 Oct 2020 19:58:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387915AbgJIT6m (ORCPT <rfc822;linux-mmc@archiver.kernel.org>); Fri, 9 Oct 2020 15:58:42 -0400 Received: from mga12.intel.com ([192.55.52.136]:29334 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391094AbgJITx1 (ORCPT <rfc822;linux-mmc@vger.kernel.org>); Fri, 9 Oct 2020 15:53:27 -0400 IronPort-SDR: dNjI/+CbWDQK7qTqW5BqQsQgclEAOq7y/cS1i5jjle6fiDG/78S+D7ApyW4zeTXOr/fIB3FyQB H0HlrqWAKRjQ== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="144851032" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="144851032" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:53:26 -0700 IronPort-SDR: 2ROrwlCi2HA6jb/vbADUiWNpPA9fz//CxLO3iPg6ChQCY2CkDUKdp2BuOf7Z0K54YjJfUTECcl a5kJtnEVjTKQ== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="329006788" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:53:25 -0700 From: ira.weiny@intel.com To: Andrew Morton <akpm@linux-foundation.org>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>, Peter Zijlstra <peterz@infradead.org> Cc: Ira Weiny <ira.weiny@intel.com>, Stefano Stabellini <sstabellini@kernel.org>, x86@kernel.org, Dave Hansen <dave.hansen@linux.intel.com>, Dan Williams <dan.j.williams@intel.com>, Fenghua Yu <fenghua.yu@intel.com>, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, kexec@lists.infradead.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, devel@driverdev.osuosl.org, linux-efi@vger.kernel.org, linux-mmc@vger.kernel.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-aio@kvack.org, io-uring@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-um@lists.infradead.org, linux-ntfs-dev@lists.sourceforge.net, reiserfs-devel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-nilfs@vger.kernel.org, cluster-devel@redhat.com, ecryptfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-afs@lists.infradead.org, linux-rdma@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, drbd-dev@lists.linbit.com, linux-block@vger.kernel.org, xen-devel@lists.xenproject.org, linux-cachefs@redhat.com, samba-technical@lists.samba.org, intel-wired-lan@lists.osuosl.org Subject: [PATCH RFC PKS/PMEM 44/58] drivers/xen: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:50:19 -0700 Message-Id: <20201009195033.3208459-45-ira.weiny@intel.com> X-Mailer: git-send-email 2.28.0.rc0.12.gb6a658bd00c9 In-Reply-To: <20201009195033.3208459-1-ira.weiny@intel.com> References: <20201009195033.3208459-1-ira.weiny@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: <linux-mmc.vger.kernel.org> X-Mailing-List: linux-mmc@vger.kernel.org |
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PMEM: Introduce stray write protection for PMEM
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diff --git a/drivers/xen/gntalloc.c b/drivers/xen/gntalloc.c index 3fa40c723e8e..3b78e055feff 100644 --- a/drivers/xen/gntalloc.c +++ b/drivers/xen/gntalloc.c @@ -184,9 +184,9 @@ static int add_grefs(struct ioctl_gntalloc_alloc_gref *op, static void __del_gref(struct gntalloc_gref *gref) { if (gref->notify.flags & UNMAP_NOTIFY_CLEAR_BYTE) { - uint8_t *tmp = kmap(gref->page); + uint8_t *tmp = kmap_thread(gref->page); tmp[gref->notify.pgoff] = 0; - kunmap(gref->page); + kunmap_thread(gref->page); } if (gref->notify.flags & UNMAP_NOTIFY_SEND_EVENT) { notify_remote_via_evtchn(gref->notify.event);