From patchwork Wed Sep 12 16:01:10 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Qiang X-Patchwork-Id: 10597943 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7A4AA921 for ; Wed, 12 Sep 2018 16:04:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 699612434C for ; Wed, 12 Sep 2018 16:04:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5D63A26E78; Wed, 12 Sep 2018 16:04:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9E3112434C for ; Wed, 12 Sep 2018 16:04:14 +0000 (UTC) Received: from localhost ([::1]:36987 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g07cj-0000Q8-8t for patchwork-qemu-devel@patchwork.kernel.org; Wed, 12 Sep 2018 12:04:13 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60577) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g07aR-00071d-Pi for qemu-devel@nongnu.org; Wed, 12 Sep 2018 12:01:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1g07aN-0003bm-QR for qemu-devel@nongnu.org; Wed, 12 Sep 2018 12:01:51 -0400 Received: from m12-15.163.com ([220.181.12.15]:51265) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1g07aN-0003a6-0M for qemu-devel@nongnu.org; Wed, 12 Sep 2018 12:01:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id; bh=/4ULpSuf7glpwua1h+ Z2XEThUnBvQp/b1+1m091NQrE=; b=Y3K92wUUPnKpkrb2k2nTJIpOO4Eeo7Tu6K rWL45tiPI1xvEAXg5wHD4Uci2wprtsaMb4xyQjtYNP34TmPfS2boH2c9kGI0c/aH MYAbasodwLmeAwzk/qf5Hv2JSOlHJtVCZd54IZ3rol7kL3sSCUH2gbRCrG/IVKsb +2uh4qSrY= Received: from ubuntu.localdomain (unknown [36.27.41.0]) by smtp11 (Coremail) with SMTP id D8CowADHy0FjOJlbpTj+Gw--.61042S2; Thu, 13 Sep 2018 00:01:39 +0800 (CST) From: Li Qiang To: pbonzini@redhat.com, lersek@redhat.com, marcandre.lureau@gmail.com, ehabkost@redhat.com, mst@redhat.com, peter.maydell@linaro.org, ppandit@redhat.com Date: Wed, 12 Sep 2018 09:01:10 -0700 Message-Id: <20180912160118.21158-1-liq3ea@163.com> X-Mailer: git-send-email 2.17.1 X-CM-TRANSID: D8CowADHy0FjOJlbpTj+Gw--.61042S2 X-Coremail-Antispam: 1Uf129KBjvJXoWrur1DuF4xKFWfCr1rWry7GFg_yoW8Jr4UpF 1ru3W5Gr9ayrsxZF4fZr48Za4rJa95Cay3ur92kF13Cr1fZF15AryxG3s2vrWUX34fXan8 Za1UJr1fG3W8JaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07jfWrXUUUUU= X-Originating-IP: [36.27.41.0] X-CM-SenderInfo: 5oltjvrd6rljoofrz/1tbiTwS-bVsGMBH1sAAAsg X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 220.181.12.15 Subject: [Qemu-devel] [PATCH 0/8] Add missed read callback for some memory region X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Li Qiang , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Li Qiang This patch set try to add the missed read callback for memory region. Without this patchset, when the guest reads the IO port/memory, it will cause an NULL-dereference issue. For example, add "-device isa-debug-exit" to command, then read the 0x501 port, it causes a SIGSEGV. The only exception is 'readonly_mem_ops' as its read is directly access the underlying host ram as the comments says. These missed read callback is mostly pointed by Laszlo Ersek. Li Qiang (8): fw_cfg_mem: add read memory region callback hw: debugexit: add read callback hw: hyperv_testdev: add read callback hw: pc-testdev: add read memory region callback hw: designware: add read memory region callback hw: pvrdma: add read memory region callback hw: sun4c: add read memory region callback exec: add read callback for notdirty memory region exec.c | 7 +++++++ hw/misc/debugexit.c | 6 ++++++ hw/misc/hyperv_testdev.c | 10 ++++++++-- hw/misc/pc-testdev.c | 20 ++++++++++++++++---- hw/nvram/fw_cfg.c | 6 ++++++ hw/pci-host/designware.c | 7 +++++++ hw/rdma/vmw/pvrdma_main.c | 6 ++++++ hw/sparc64/sun4u.c | 6 ++++++ 8 files changed, 62 insertions(+), 6 deletions(-)