From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40339) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cWMXw-0001gA-2Y for qemu-devel@nongnu.org; Wed, 25 Jan 2017 07:19:29 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cWMXs-0005Mr-Qs for qemu-devel@nongnu.org; Wed, 25 Jan 2017 07:19:28 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:42916 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cWMXs-0005Mj-Lx for qemu-devel@nongnu.org; Wed, 25 Jan 2017 07:19:24 -0500 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v0PCIdY2184152 for ; Wed, 25 Jan 2017 07:19:24 -0500 Received: from e06smtp08.uk.ibm.com (e06smtp08.uk.ibm.com [195.75.94.104]) by mx0b-001b2d01.pphosted.com with ESMTP id 286rd5gg7d-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 25 Jan 2017 07:19:23 -0500 Received: from localhost by e06smtp08.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 25 Jan 2017 12:19:22 -0000 Date: Wed, 25 Jan 2017 13:19:17 +0100 From: Cornelia Huck In-Reply-To: <20170125120053.GA2096@work-vm> References: <20170124184742.1639-1-dgilbert@redhat.com> <20170124184742.1639-3-dgilbert@redhat.com> <20170125114620.GA9699@lemon.Home> <20170125120053.GA2096@work-vm> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Message-Id: <20170125131917.32df62ef.cornelia.huck@de.ibm.com> Subject: Re: [Qemu-devel] [PULL 02/15] migration: extend VMStateInfo List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Dr. David Alan Gilbert" Cc: Fam Zheng , qemu-devel@nongnu.org, Jianjun Duan On Wed, 25 Jan 2017 12:00:53 +0000 "Dr. David Alan Gilbert" wrote: > * Fam Zheng (famz@redhat.com) wrote: > > On Tue, 01/24 18:47, Dr. David Alan Gilbert (git) wrote: > > > diff --git a/hw/intc/s390_flic_kvm.c b/hw/intc/s390_flic_kvm.c > > > index c313166..da8e4df 100644 > > > --- a/hw/intc/s390_flic_kvm.c > > > +++ b/hw/intc/s390_flic_kvm.c > > > @@ -286,7 +286,8 @@ static void kvm_s390_release_adapter_routes(S390F= LICState *fs, > > > * increase until buffer is sufficient or maxium size is > > > * reached > > > */ > > > -static void kvm_flic_save(QEMUFile *f, void *opaque, size_t size) > > > +static int kvm_flic_save(QEMUFile *f, void *opaque, size_t size, > > > + VMStateField *field, QJSON *vmdesc) > > > { > > > KVMS390FLICState *flic =3D opaque; > > > int len =3D FLIC_SAVE_INITIAL_SIZE; > > > @@ -319,6 +320,8 @@ static void kvm_flic_save(QEMUFile *f, void *opaq= ue, size_t size) > > > count * sizeof(struct kvm_s390_irq)); > > > } > > > g_free(buf); > > > + > > > + return 0; > > > } > >=20 > > This hunk left one 'return' behind in the function, which should have b= een > > changed to 'return 0' as well, and now the compiler is not happy: > >=20 > > /var/tmp/patchew-tester-tmp-itftfkl9/src/hw/intc/s390_flic_kvm.c: In fu= nction =E2=80=98kvm_flic_save=E2=80=99: > > /var/tmp/patchew-tester-tmp-itftfkl9/src/hw/intc/s390_flic_kvm.c:306:9:= error: =E2=80=98return=E2=80=99 with no value, in function returning non-v= oid [-Werror] > > return; > > ^~~~~~ > > /var/tmp/patchew-tester-tmp-itftfkl9/src/hw/intc/s390_flic_kvm.c:289:12= : note: declared here > > static int kvm_flic_save(QEMUFile *f, void *opaque, size_t size, > > ^~~~~~~~~~~~~ > > cc1: all warnings being treated as errors >=20 > OK, so it looks like that's a failure path, adding a return -ENOMEM would= seem to make > sense there. Just saw this. I don't think we want -ENOMEM, as that would change the actual state being saved, no?