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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <1567815389-18229-4-git-send-email-mjrosato@linux.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.65]); Mon, 09 Sep 2019 05:19:00 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [qemu-s390x] [PATCH v3 3/5] s390: vfio_pci: Use a PCI Group structure 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: walling@linux.ibm.com, pmorel@linux.ibm.com, mst@redhat.com, qemu-s390x@nongnu.org, david@redhat.com, qemu-devel@nongnu.org, pasic@linux.ibm.com, borntraeger@de.ibm.com, alex.williamson@redhat.com, pbonzini@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 07/09/2019 02.16, Matthew Rosato wrote: > From: Pierre Morel > > We use a S390PCIGroup structure to hold the information > related to zPCI Function group. > > This allows us to be ready to support multiple groups and to retrieve > the group information from the host. > > Signed-off-by: Pierre Morel > --- > hw/s390x/s390-pci-bus.c | 42 ++++++++++++++++++++++++++++++++++++++++++ > hw/s390x/s390-pci-bus.h | 11 ++++++++++- > hw/s390x/s390-pci-inst.c | 22 +++++++++++++--------- > 3 files changed, 65 insertions(+), 10 deletions(-) > > diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c > index 963a41c..e625217 100644 > --- a/hw/s390x/s390-pci-bus.c > +++ b/hw/s390x/s390-pci-bus.c > @@ -730,6 +730,46 @@ static void s390_pci_iommu_free(S390pciState *s, PCIBus *bus, int32_t devfn) > object_unref(OBJECT(iommu)); > } > > +static S390PCIGroup *s390_grp_create(int ug) > +{ > + S390PCIGroup *grp; > + S390pciState *s = s390_get_phb(); > + > + grp = g_new0(S390PCIGroup, 1); > + grp->ug = ug; > + QTAILQ_INSERT_TAIL(&s->zpci_grps, grp, link); > + return grp; > +} Maybe an ignorant question, but shouldn't there also be some kind of clean up function that also frees the memory again, e.g. during a machine reset? Or are these groups supposed to survive a machine reset? Thomas