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Violators will be prosecuted; Fri, 2 Sep 2016 16:33:22 +1000 X-IBM-Helo: d23dlp01.au.ibm.com X-IBM-MailFrom: nikunj@linux.vnet.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org;qemu-ppc@nongnu.org Received: from d23relay08.au.ibm.com (d23relay08.au.ibm.com [9.185.71.33]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id 2D2462CE8054; Fri, 2 Sep 2016 16:33:22 +1000 (EST) Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay08.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u826XMnD3277196; Fri, 2 Sep 2016 16:33:22 +1000 Received: from d23av04.au.ibm.com (localhost [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u826XLs7003459; Fri, 2 Sep 2016 16:33:21 +1000 Received: from abhimanyu.in.ibm.com ([9.79.251.164]) by d23av04.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u826XBPa003246; Fri, 2 Sep 2016 16:33:18 +1000 From: Nikunj A Dadhania To: qemu-ppc@nongnu.org, alex.bennee@linaro.org, david@gibson.dropbear.id.au, rth@twiddle.net Date: Fri, 2 Sep 2016 12:02:53 +0530 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1472797976-24210-1-git-send-email-nikunj@linux.vnet.ibm.com> References: <1472797976-24210-1-git-send-email-nikunj@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16090206-0008-0000-0000-000000B91831 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16090206-0009-0000-0000-000007FB1684 Message-Id: <1472797976-24210-2-git-send-email-nikunj@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-09-02_03:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1609020078 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH RFC 1/4] spapr-hcall: take iothread lock during handler call 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: qemu-devel@nongnu.org, nikunj@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Nikunj A Dadhania --- hw/ppc/spapr_hcall.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index e5eca67..daea7a0 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -1075,20 +1075,27 @@ target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode, target_ulong *args) { sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); + target_ulong ret; if ((opcode <= MAX_HCALL_OPCODE) && ((opcode & 0x3) == 0)) { spapr_hcall_fn fn = papr_hypercall_table[opcode / 4]; if (fn) { - return fn(cpu, spapr, opcode, args); + qemu_mutex_lock_iothread(); + ret = fn(cpu, spapr, opcode, args); + qemu_mutex_unlock_iothread(); + return ret; } } else if ((opcode >= KVMPPC_HCALL_BASE) && (opcode <= KVMPPC_HCALL_MAX)) { spapr_hcall_fn fn = kvmppc_hypercall_table[opcode - KVMPPC_HCALL_BASE]; if (fn) { - return fn(cpu, spapr, opcode, args); + qemu_mutex_lock_iothread(); + ret = fn(cpu, spapr, opcode, args); + qemu_mutex_unlock_iothread(); + return ret; } }