From patchwork Mon Dec 16 16:28:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 1210657 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; 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=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="m9i/2UcY"; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 47c7625KnQz9sRl for ; Tue, 17 Dec 2019 04:08:58 +1100 (AEDT) Received: from localhost ([::1]:57078 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1igtrc-0003la-5a for incoming@patchwork.ozlabs.org; Mon, 16 Dec 2019 12:08:56 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:57567) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1igtFn-00063A-Fp for qemu-devel@nongnu.org; Mon, 16 Dec 2019 11:29:52 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1igtFm-0000mo-Fc for qemu-devel@nongnu.org; Mon, 16 Dec 2019 11:29:51 -0500 Received: from mail-wr1-x433.google.com ([2a00:1450:4864:20::433]:38453) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1igtFl-0000jV-PO for qemu-devel@nongnu.org; Mon, 16 Dec 2019 11:29:49 -0500 Received: by mail-wr1-x433.google.com with SMTP id y17so8052540wrh.5 for ; Mon, 16 Dec 2019 08:29:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=hZVVOGkgb20bftRL1JMnXY5FFlbJTfG81bARHGzmB20=; b=m9i/2UcYLH3jc427b+umGKl+c4FrFCMLc2CJPAarBEeGlMEFUn+TkYEMDDE8LWkYuN +M22i1U5LE2Qa9fArBY3W/ZtHHxOjnJeHrF4/jvNhWRpzyxBDaQUtPS/aDOC7KneEpkB j4EDv8K4wX+xXGT/uHnQgeFxx+h2JZi2AJSw9+uwjjTOnqOapsYHyYrzqhCN719y65a4 Ui5P4fAIMde5OnTuZ1eKv5Upr3BjFKj3v6ojMYROty3WSxSNqtlw77VD6z+Z6/6mI6UB pvQcG8AgBncfZ+oOjoPgH3djBpON9LIb0l2PNPPZSSmMUh/4d3Snbop+VWu8Kc3QxAJ9 Weww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=hZVVOGkgb20bftRL1JMnXY5FFlbJTfG81bARHGzmB20=; b=be1mGSaXnVKXUVhX5a7SNN2H+sgz7GargtWfBfZhylI7PNNj+4s/g0llts28mVPavA Z1xx2IQfc6uRfgXoKjo4QxdcxAZ/BC7GBLHOW1LTvYIYv10f8vDFRaAivp7T+K0iqCRy CUapDgFGBsND3F2Us/1oJl8S4YcSgH8rz63hebgHUbLamb7tA8RVy/ZNXV/HpR2Ks6PO rKJbYVcMKUXG5N9xJwtjrQHwQutaqW+SBfmgb3y0bz+cvYFg4SoCUUy/PVqnHPz0c8sA LNKIsWctH0cKcMOfd0PHXfgme4FWAs7HhE8VB/ci6AK+46fTiDa8tiIiOx+QtlbP5mxA hkzw== X-Gm-Message-State: APjAAAVehuro9Iu7ce5IOXDsadH5uViWeIIFiuDp6zYhyanxMkNsCeoO Zj+9heGQaeykKCXzCuvlnRhCWUkE X-Google-Smtp-Source: APXvYqyv0DROpQUFpgQN5d+Da/7/8nZI4bwEGJMJRiK2/Q2QVJX7HuJ1Btj8FkQbTNHFECB4LOlOig== X-Received: by 2002:a5d:4687:: with SMTP id u7mr31144180wrq.176.1576513788590; Mon, 16 Dec 2019 08:29:48 -0800 (PST) Received: from 640k.lan ([93.56.166.5]) by smtp.gmail.com with ESMTPSA id q68sm19962334wme.14.2019.12.16.08.29.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 16 Dec 2019 08:29:48 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 61/62] memory: use RCU_READ_LOCK_GUARD Date: Mon, 16 Dec 2019 17:28:45 +0100 Message-Id: <1576513726-53700-62-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1576513726-53700-1-git-send-email-pbonzini@redhat.com> References: <1576513726-53700-1-git-send-email-pbonzini@redhat.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::433 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: "Dr. David Alan Gilbert" Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Cc: Dr. David Alan Gilbert Signed-off-by: Paolo Bonzini --- include/exec/memory.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/include/exec/memory.h b/include/exec/memory.h index e499dc2..e42a9d7 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -2165,7 +2165,7 @@ MemTxResult address_space_read(AddressSpace *as, hwaddr addr, if (__builtin_constant_p(len)) { if (len) { - rcu_read_lock(); + RCU_READ_LOCK_GUARD(); fv = address_space_to_flatview(as); l = len; mr = flatview_translate(fv, addr, &addr1, &l, false, attrs); @@ -2176,7 +2176,6 @@ MemTxResult address_space_read(AddressSpace *as, hwaddr addr, result = flatview_read_continue(fv, addr, attrs, buf, len, addr1, l, mr); } - rcu_read_unlock(); } } else { result = address_space_read_full(as, addr, attrs, buf, len);