From patchwork Mon May 15 08:50:59 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Xu X-Patchwork-Id: 762320 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3wRDrR42yCz9s0m for ; Mon, 15 May 2017 18:53:27 +1000 (AEST) Received: from localhost ([::1]:35459 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dABkr-0005DG-6Y for incoming@patchwork.ozlabs.org; Mon, 15 May 2017 04:53:25 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34184) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dABis-0003rR-Hp for qemu-devel@nongnu.org; Mon, 15 May 2017 04:51:23 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dABir-0005aa-RH for qemu-devel@nongnu.org; Mon, 15 May 2017 04:51:22 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60418) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dABir-0005aW-Lj for qemu-devel@nongnu.org; Mon, 15 May 2017 04:51:21 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A7F4B51443; Mon, 15 May 2017 08:51:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com A7F4B51443 Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=peterx@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com A7F4B51443 Received: from pxdev.xzpeter.org.com (vpn1-5-116.pek2.redhat.com [10.72.5.116]) by smtp.corp.redhat.com (Postfix) with ESMTP id 882765C3FD; Mon, 15 May 2017 08:51:17 +0000 (UTC) From: Peter Xu To: qemu-devel@nongnu.org Date: Mon, 15 May 2017 16:50:59 +0800 Message-Id: <1494838260-30439-4-git-send-email-peterx@redhat.com> In-Reply-To: <1494838260-30439-1-git-send-email-peterx@redhat.com> References: <1494838260-30439-1-git-send-email-peterx@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Mon, 15 May 2017 08:51:20 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 3/4] exec: further use is_mmio 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: Paolo Bonzini , Jason Wang , "Michael S . Tsirkin" , peterx@redhat.com, David Gibson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This is MMIO-specific tunes on the size. Let's skip it for non-MMIO translations. Signed-off-by: Peter Xu --- exec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/exec.c b/exec.c index 0adae94..32e5394 100644 --- a/exec.c +++ b/exec.c @@ -455,7 +455,7 @@ address_space_translate_internal(AddressSpaceDispatch *d, hwaddr addr, hwaddr *x * everything works fine. If the incoming length is large, however, * the caller really has to do the clamping through memory_access_size. */ - if (memory_region_is_ram(mr)) { + if (is_mmio && memory_region_is_ram(mr)) { diff = int128_sub(section->size, int128_make64(addr)); *plen = int128_get64(int128_min(diff, int128_make64(*plen))); }