From nobody Thu May 2 11:06:01 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1492986846642903.3903255985605; Sun, 23 Apr 2017 15:34:06 -0700 (PDT) Received: from localhost ([::1]:40803 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d2Q4y-0006x3-2z for importer@patchew.org; Sun, 23 Apr 2017 18:34:04 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53105) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d2Q3i-0006JO-2j for qemu-devel@nongnu.org; Sun, 23 Apr 2017 18:32:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d2Q3h-0005Bb-0Y for qemu-devel@nongnu.org; Sun, 23 Apr 2017 18:32:46 -0400 Received: from hall.aurel32.net ([2001:bc8:30d7:100::1]:45512) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d2Q3g-0005BU-Qs for qemu-devel@nongnu.org; Sun, 23 Apr 2017 18:32:44 -0400 Received: from [2001:bc8:30d7:120:9bb5:8936:7e6a:9e36] (helo=ohm.rr44.fr) by hall.aurel32.net with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1d2Q3f-0002Xf-S3; Mon, 24 Apr 2017 00:32:43 +0200 Received: from aurel32 by ohm.rr44.fr with local (Exim 4.89) (envelope-from ) id 1d2Q3f-0004fl-7U; Mon, 24 Apr 2017 00:32:43 +0200 From: Aurelien Jarno To: qemu-devel@nongnu.org Date: Mon, 24 Apr 2017 00:32:40 +0200 Message-Id: <20170423223240.17917-1-aurelien@aurel32.net> X-Mailer: git-send-email 2.11.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2001:bc8:30d7:100::1 Subject: [Qemu-devel] [PATCH v2] s390x/misc_helper.c: wrap s390_virtio_hypercall in BQL 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: Alexander Graf , Aurelien Jarno , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" s390_virtio_hypercall can trigger IO events and interrupts, most notably when using virtio-ccw devices. Reviewed-by: Alexander Graf Signed-off-by: Aurelien Jarno Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- target/s390x/misc_helper.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c index 4946b56ab3..aec737d707 100644 --- a/target/s390x/misc_helper.c +++ b/target/s390x/misc_helper.c @@ -307,7 +307,9 @@ void HELPER(diag)(CPUS390XState *env, uint32_t r1, uint= 32_t r3, uint32_t num) switch (num) { case 0x500: /* KVM hypercall */ + qemu_mutex_lock_iothread(); r =3D s390_virtio_hypercall(env); + qemu_mutex_unlock_iothread(); break; case 0x44: /* yield */ --=20 2.11.0