From patchwork Thu Nov 22 11:29:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 1001702 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linaro.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 430y1Q0fXzz9s29 for ; Thu, 22 Nov 2018 22:30:50 +1100 (AEDT) Received: from localhost ([::1]:45278 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gPnC3-0002O9-Iy for incoming@patchwork.ozlabs.org; Thu, 22 Nov 2018 06:30:47 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32811) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gPnBL-0002JD-SJ for qemu-devel@nongnu.org; Thu, 22 Nov 2018 06:30:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gPnBL-0005sC-5C for qemu-devel@nongnu.org; Thu, 22 Nov 2018 06:30:03 -0500 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:52716) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gPnBK-0004lO-TV for qemu-devel@nongnu.org; Thu, 22 Nov 2018 06:30:03 -0500 Received: from pm215 by orth.archaic.org.uk with local (Exim 4.89) (envelope-from ) id 1gPnBB-0004v4-CD; Thu, 22 Nov 2018 11:29:53 +0000 From: Peter Maydell To: qemu-devel@nongnu.org Date: Thu, 22 Nov 2018 11:29:46 +0000 Message-Id: <20181122112947.7586-3-peter.maydell@linaro.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181122112947.7586-1-peter.maydell@linaro.org> References: <20181122112947.7586-1-peter.maydell@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2001:8b0:1d0::2 Subject: [Qemu-devel] [PATCH for-4.0 2/3] monitor: Use address_space_read() to read memory 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: Markus Armbruster , "Dr. David Alan Gilbert" , patches@linaro.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Currently monitor.c reads physical memory using cpu_physical_memory_read(). This effectively hard-codes assuming that all CPUs have the same view of physical memory. Switch to address_space_read() instead, which lets us use the AddressSpace for the CPU we're reading memory for (falling back to address_space_memory if there is no CPU, as happens with the "none" board). As a bonus, this allows us to detect failures to read memory. Signed-off-by: Peter Maydell Reviewed-by: Dr. David Alan Gilbert --- monitor.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/monitor.c b/monitor.c index d39390c2f2f..b0e8f2c490a 100644 --- a/monitor.c +++ b/monitor.c @@ -1604,7 +1604,13 @@ static void memory_dump(Monitor *mon, int count, int format, int wsize, if (l > line_size) l = line_size; if (is_physical) { - cpu_physical_memory_read(addr, buf, l); + AddressSpace *as = cs ? cs->as : &address_space_memory; + MemTxResult r = address_space_read(as, addr, + MEMTXATTRS_UNSPECIFIED, buf, l); + if (r != MEMTX_OK) { + monitor_printf(mon, " Cannot access memory\n"); + break; + } } else { if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) { monitor_printf(mon, " Cannot access memory\n");