From patchwork Wed Sep 6 07:38:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 720701 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 0C9F0EB8FAF for ; Wed, 6 Sep 2023 07:39:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233744AbjIFHjY (ORCPT ); Wed, 6 Sep 2023 03:39:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229920AbjIFHjY (ORCPT ); Wed, 6 Sep 2023 03:39:24 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6FEACC; Wed, 6 Sep 2023 00:39:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1693985960; x=1725521960; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=9DWfOXctPMjyadaaUcywDcWCHVuND2DRm2KBk4DeAY8=; b=SYpAbwH6H1O0voyJXpKmnycv4wDM2s2Hao5sIA/KfF67AvgxszyYkZOH /G+5YLhBGq2T8GK5LjKyv1IJFTG/P7bL1LCEj/RRQD4J1Rzd9bwsiPbc7 4KJ7RszGFxBC3m1lEcuva/sw6X5FHeF4oWvzEm2jxnUcpMWUt9aa+bkVZ A6aD0QeNOy3N9nRhKMUgsOYkRvmciq/wokWOPArj348EIbtwUfRtRPX/b ff8DuybYVokZHe/hzUtlF/HKb+rXAZHijIDsj5nOBKO4r2xmCZdq3TLV1 iFrFNTxBFKg5S3/rYaW38noAEhuJd7ISA6VhJJbk/GEFjo169OKp7G4SA A==; X-IronPort-AV: E=McAfee;i="6600,9927,10824"; a="375898434" X-IronPort-AV: E=Sophos;i="6.02,231,1688454000"; d="scan'208";a="375898434" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Sep 2023 00:39:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10824"; a="988133778" X-IronPort-AV: E=Sophos;i="6.02,231,1688454000"; d="scan'208";a="988133778" Received: from ahunter6-mobl1.ger.corp.intel.com (HELO ahunter-VirtualBox.home\044ger.corp.intel.com) ([10.252.60.154]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Sep 2023 00:39:16 -0700 From: Adrian Hunter To: "Kirill A. Shutemov" , Borislav Petkov , Andrew Morton Cc: Dave Hansen , Vlastimil Babka , Mike Rapoport , Lorenzo Stoakes , Tom Lendacky , Baoquan He , Vivek Goyal , Dave Young , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev, linux-efi@vger.kernel.org, kexec@lists.infradead.org Subject: [PATCH 0/3] Do not map unaccepted memory Date: Wed, 6 Sep 2023 10:38:59 +0300 Message-Id: <20230906073902.4229-1-adrian.hunter@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org Hi Support for unaccepted memory was added recently, refer commit dcdfdd40fa82 ("mm: Add support for unaccepted memory"), whereby a virtual machine may need to accept memory before it can be used. Plug a few gaps where RAM is exposed without checking if it is unaccepted memory. Adrian Hunter (3): proc/vmcore: Do not map unaccepted memory proc/kcore: Do not map unaccepted memory /dev/mem: Do not map unaccepted memory drivers/char/mem.c | 9 +++++++-- fs/proc/kcore.c | 10 +++++++++- fs/proc/vmcore.c | 15 ++++++++++++--- 3 files changed, 28 insertions(+), 6 deletions(-) Regards Adrian Reviewed-by: Kirill A. Shutemov