From patchwork Wed Nov 4 15:17:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 11881035 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1F6BC6A2 for ; Wed, 4 Nov 2020 15:22:54 +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 CC98C2074B for ; Wed, 4 Nov 2020 15:22:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gPSF/Xvt" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC98C2074B 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:44466 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kaKce-0001f4-Ov for patchwork-qemu-devel@patchwork.kernel.org; Wed, 04 Nov 2020 10:22:52 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:59028) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kaKYi-0004VK-GN for qemu-devel@nongnu.org; Wed, 04 Nov 2020 10:18:48 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:35857) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kaKYg-0007qA-OJ for qemu-devel@nongnu.org; Wed, 04 Nov 2020 10:18:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1604503126; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=G0IJggGzUw2GPdTll1DH6CRZ2qMV3yjaBdQfe9tm6qw=; b=gPSF/XvtfCIQ8B4NXm/VScF1EzK22nfpK0+AR1vfk7O2jX+5tQA/LWfqpRF8h3olszBw0D 6YembEmf+Y/nx/rf6rGgbOtfBH7RxvJtiZNlGWpbomU0HlE+cmNQfxb48X+yDWPT0wvcXO HKMkwx7ynro1PcjQ8POVRoHY1mELl9g= 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-9-jY2_geqPPsmyTdX4PI8Uvw-1; Wed, 04 Nov 2020 10:18:44 -0500 X-MC-Unique: jY2_geqPPsmyTdX4PI8Uvw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 925E81087D71; Wed, 4 Nov 2020 15:18:42 +0000 (UTC) Received: from localhost (ovpn-115-145.ams2.redhat.com [10.36.115.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id EEFFE1007517; Wed, 4 Nov 2020 15:18:38 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org, Peter Maydell Subject: [PULL 02/33] softmmu/memory: fix memory_region_ioeventfd_equal() Date: Wed, 4 Nov 2020 15:17:57 +0000 Message-Id: <20201104151828.405824-3-stefanha@redhat.com> In-Reply-To: <20201104151828.405824-1-stefanha@redhat.com> References: <20201104151828.405824-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Received-SPF: pass client-ip=216.205.24.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/03 00:03:41 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -3 X-Spam_score: -0.4 X-Spam_bar: / X-Spam_report: (-0.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MIME_BASE64_TEXT=1.741, RCVD_IN_DNSWL_NONE=-0.0001, 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: Fam Zheng , Kevin Wolf , qemu-block@nongnu.org, =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , kvm@vger.kernel.org, Markus Armbruster , Coiby Xu , "Dr. David Alan Gilbert" , Klaus Jensen , Stefan Hajnoczi , Keith Busch , Paolo Bonzini , Elena Afanasova , Max Reitz Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Elena Afanasova Eventfd can be registered with a zero length when fast_mmio is true. Handle this case properly when dispatching through QEMU. Signed-off-by: Elena Afanasova Message-id: cf71a62eb04e61932ff8ffdd02e0b2aab4f495a0.camel@gmail.com Signed-off-by: Stefan Hajnoczi --- softmmu/memory.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/softmmu/memory.c b/softmmu/memory.c index 21d533d8ed..8aba4114cf 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -205,8 +205,15 @@ static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd *a, static bool memory_region_ioeventfd_equal(MemoryRegionIoeventfd *a, MemoryRegionIoeventfd *b) { - return !memory_region_ioeventfd_before(a, b) - && !memory_region_ioeventfd_before(b, a); + if (int128_eq(a->addr.start, b->addr.start) && + (!int128_nz(a->addr.size) || !int128_nz(b->addr.size) || + (int128_eq(a->addr.size, b->addr.size) && + (a->match_data == b->match_data) && + ((a->match_data && (a->data == b->data)) || !a->match_data) && + (a->e == b->e)))) + return true; + + return false; } /* Range of memory in the global map. Addresses are absolute. */