From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 90E32EA3 for ; Wed, 6 Sep 2023 07:39:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1693985961; x=1725521961; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=9DWfOXctPMjyadaaUcywDcWCHVuND2DRm2KBk4DeAY8=; b=KFaG+ffi5S+KJKLF8bPHYBC8vIMVHBeKRFEyRujS53lQio7goD9EpFgb JHy3IvYyoj2LPnUzcNzEgK24ezoJNdqm59QaGgwZIk9ZuHpfWDcSW9PFj q0tBr3aws7kU3/TCG1ddtP2Tk4wA39FlTs9hF3r8GeydQiGCg9MC0XfGl DztgxBTON8b0dTEhWkPzAyOZDZo/1rqDxFpZ5iSv584/s/AuLJkO+RQ4Q E/OWnr58w9mwc5Ftp5ECx/n7cEc5F3GP2EcH0PRY+HL/mc/Z8v916MOPv sVq135sa/MrpUqcld9mf39cPutsuM4FKg/+Z3wzsjNfsBIxhhy7rnl3Sb A==; X-IronPort-AV: E=McAfee;i="6600,9927,10824"; a="375898438" X-IronPort-AV: E=Sophos;i="6.02,231,1688454000"; d="scan'208";a="375898438" 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 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Content-Transfer-Encoding: 8bit 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