From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CDA7C07E95 for ; Tue, 20 Jul 2021 13:12:40 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 30D36610D2 for ; Tue, 20 Jul 2021 13:12:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 30D36610D2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:36374 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m5pY7-0004b5-Bz for qemu-devel@archiver.kernel.org; Tue, 20 Jul 2021 09:12:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52790) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m5pPs-00061R-UC for qemu-devel@nongnu.org; Tue, 20 Jul 2021 09:04:08 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:40196) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m5pPq-0001KN-Tz for qemu-devel@nongnu.org; Tue, 20 Jul 2021 09:04:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626786246; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Z529/eydABA0pqIocAcsEmQFLGljXmJIFgQvuEJplCo=; b=NvX+dLHoctGaMexCitUgCnWSYl06uUmlECWTfa/5yaXPzzEgftl48cmr+M53dP0BTBJAeh VgUEqJBjjg+Z9NI1yFGGMGi2+2rd6ABpqWN1S19/Gm8AGmnptFMLyFTmbQy8T3AIWWDZ6T 12FeBVprVQafpdL4zCerDLMeEA7Ksv0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-303-Vth_Rw3hNVKJxUCk-GTnqA-1; Tue, 20 Jul 2021 09:04:02 -0400 X-MC-Unique: Vth_Rw3hNVKJxUCk-GTnqA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7EAE7CC622; Tue, 20 Jul 2021 13:04:01 +0000 (UTC) Received: from t480s.redhat.com (ovpn-114-112.ams2.redhat.com [10.36.114.112]) by smtp.corp.redhat.com (Postfix) with ESMTP id A237369CB4; Tue, 20 Jul 2021 13:03:51 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH resend v2 3/5] softmmu/memory_mapping: never merge ranges accross memory regions Date: Tue, 20 Jul 2021 15:03:02 +0200 Message-Id: <20210720130304.26323-4-david@redhat.com> In-Reply-To: <20210720130304.26323-1-david@redhat.com> References: <20210720130304.26323-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.474, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Thomas Huth , Eduardo Habkost , "Michael S. Tsirkin" , David Hildenbrand , "Dr . David Alan Gilbert" , Peter Xu , Alex Williamson , Claudio Fontana , Paolo Bonzini , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Igor Mammedov , Stefan Berger Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Let's make sure to not merge when different memory regions are involved. Unlikely, but theoretically possible. Cc: Marc-André Lureau Cc: Paolo Bonzini Cc: "Michael S. Tsirkin" Cc: Eduardo Habkost Cc: Alex Williamson Cc: Dr. David Alan Gilbert Cc: Igor Mammedov Cc: Claudio Fontana Cc: Thomas Huth Cc: "Alex Bennée" Cc: Peter Xu Cc: Laurent Vivier Cc: Stefan Berger Signed-off-by: David Hildenbrand --- softmmu/memory_mapping.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/softmmu/memory_mapping.c b/softmmu/memory_mapping.c index d63f896b30..c149bad44a 100644 --- a/softmmu/memory_mapping.c +++ b/softmmu/memory_mapping.c @@ -229,7 +229,8 @@ static void guest_phys_blocks_region_add(MemoryListener *listener, /* we want continuity in both guest-physical and host-virtual memory */ if (predecessor->target_end < target_start || - predecessor->host_addr + predecessor_size != host_addr) { + predecessor->host_addr + predecessor_size != host_addr || + predecessor->mr != section->mr) { predecessor = NULL; } } -- 2.31.1