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2016-09-14virtio-scsi: Don't abort when media is ejectedFam Zheng
With an ejected block backend, blk_get_aio_context() would return qemu_aio_context. In this case don't assert. Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1473848224-24809-3-git-send-email-famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-07-21virtio-scsi: Wrap in vmstateDr. David Alan Gilbert
Forcibly convert it to a vmstate wrapper; proper conversion comes later. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-07-21virtio-scsi: Replace HandleOutput typedefFam Zheng
There is a new common one in virtio.h, use it. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
2016-07-21virtio-scsi: Call virtio_add_queue_aioFam Zheng
AIO based handler is more appropriate here because it will then cooperate with bdrv_drained_begin/end. It is needed by the coming revert patch. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
2016-07-12Use #include "..." for our own headers, <...> for othersMarkus Armbruster
Tracked down with an ugly, brittle and probably buggy Perl script. Also move includes converted to <...> up so they get included before ours where that's obviously okay. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Tested-by: Eric Blake <eblake@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-06-28Revert "virtio: sync the dataplane vring state to the virtqueue before ↵Stefan Hajnoczi
virtio_save" This reverts commit 10a06fd65f667a972848ebbbcac11bdba931b544. Dataplane has used the same virtqueue code as non-dataplane since commits e24a47c5b73e04f94030e2daa356c7582aebfca2 ("virtio-scsi: do not use vring in dataplane") and 03de2f527499ae0c6d16a379665d072345254f2c ("virtio-blk: do not use vring in dataplane"). It is no longer necessary to stop dataplane in order to sync state since there is no duplicated virtqueue state. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Pavel Butsykin <pbutsykin@virtuozzo.com> Message-id: 1466503331-9831-1-git-send-email-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-06-07virtio: drop duplicate virtio_queue_get_id() functionStefan Hajnoczi
The virtio_queue_get_id() function is the lesser used duplicate of virtio_get_queue_index(). Use the latter instead. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1463767461-17922-1-git-send-email-stefanha@redhat.com
2016-06-07virtio-scsi: Remove op blocker for dataplaneFam Zheng
The previous patch dropped all op blockers from virtio-blk data plane. The situation of virtio-scsi is exactly the same it can drop them too. Signed-off-by: Fam Zheng <famz@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Message-id: 1463969978-24970-5-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-04-07virtio-scsi: use aio handler for data planePaolo Bonzini
In addition to handling IO in vcpu thread and in io thread, dataplane introduces yet another mode: handling it by AioContext. This reuses the same handler as previous modes, which triggers races as these were not designed to be reentrant. Use a separate handler just for aio, and disable regular handlers when dataplane is active. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-04-07virtio-scsi: fix disabled modePaolo Bonzini
Add two missing checks for s->dataplane_fenced. In one case, QEMU would skip injecting an IRQ due to a write to an uninitialized EventNotifier's file descriptor. In the second case, the dataplane_disabled field was used by mistake; in fact after fixing this occurrence it is completely unused. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-03-22include/qemu/osdep.h: Don't include qapi/error.hMarkus Armbruster
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the Error typedef. Since then, we've moved to include qemu/osdep.h everywhere. Its file comment explains: "To avoid getting into possible circular include dependencies, this file should not include any other QEMU headers, with the exceptions of config-host.h, compiler.h, os-posix.h and os-win32.h, all of which are doing a similar job to this file and are under similar constraints." qapi/error.h doesn't do a similar job, and it doesn't adhere to similar constraints: it includes qapi-types.h. That's in excess of 100KiB of crap most .c files don't actually need. Add the typedef to qemu/typedefs.h, and include that instead of qapi/error.h. Include qapi/error.h in .c files that need it and don't get it now. Include qapi-types.h in qom/object.h for uint16List. Update scripts/clean-includes accordingly. Update it further to match reality: replace config.h by config-target.h, add sysemu/os-posix.h, sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h comment quoted above similarly. This reduces the number of objects depending on qapi/error.h from "all of them" to less than a third. Unfortunately, the number depending on qapi-types.h shrinks only a little. More work is needed for that one. Signed-off-by: Markus Armbruster <armbru@redhat.com> [Fix compilation without the spice devel packages. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-02-25virtio-scsi: do not use vring in dataplanePaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-02-06virtio: introduce qemu_get/put_virtqueue_elementPaolo Bonzini
Move allocation to virtio functions also when loading/saving a VirtQueueElement. This will also let the load/save functions keep backwards compatibility when the VirtQueueElement layout is changed. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-02-06virtio: move allocation to virtqueue_pop/vring_popPaolo Bonzini
The return code of virtqueue_pop/vring_pop is unused except to check for errors or 0. We can thus easily move allocation inside the functions and just return a pointer to the VirtQueueElement. The advantage is that we will be able to allocate only the space that is needed for the actual size of the s/g list instead of the full VIRTQUEUE_MAX_SIZE items. Currently VirtQueueElement takes about 48K of memory, and this kind of allocation puts a lot of stress on malloc. By cutting the size by two or three orders of magnitude, malloc can use much more efficient algorithms. The patch is pretty large, but changes to each device are testable more or less independently. Splitting it would mostly add churn. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-02-04virtio: move VirtQueueElement at the beginning of the structsPaolo Bonzini
The next patch will make virtqueue_pop/vring_pop allocate memory for the VirtQueueElement. In some cases (blk, scsi, gpu) the device wants to extend VirtQueueElement with device-specific fields and, until now, the place of the VirtQueueElement within the containing struct didn't matter. When allocating the entire block in virtqueue_pop/vring_pop, however, the containing struct must basically be a "subclass" of VirtQueueElement, with the VirtQueueElement as the first field. Make that the case for blk and scsi; gpu is already doing it. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-02-02virtio-scsi: Catch BDS-BB removal/insertionMax Reitz
Make use of the BDS-BB removal and insertion notifiers to remove or set up, respectively, virtio-scsi's op blockers. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-01-29virtio: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-15-git-send-email-peter.maydell@linaro.org
2016-01-15SCSI device: fix to incomplete QOMifyCao jin
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Message-Id: <1452073066-28319-1-git-send-email-caoj.fnst@cn.fujitsu.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-26virtio-scsi: don't crash without a valid deviceEugene (jno) Dvurechenski
Make sure that we actually have a device when checking the aio context. Otherwise guests could trigger QEMU crashes. Signed-off-by: "Eugene (jno) Dvurechenski" <jno@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1448549135-6582-2-git-send-email-jno@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-10-29virtio: sync the dataplane vring state to the virtqueue before virtio_savePavel Butsykin
When creating snapshot with the dataplane enabled, the snapshot file gets not the actual state of virtqueue, because the current state is stored in VirtIOBlockDataPlane. Therefore, before saving snapshot need to sync the dataplane vring state to the virtqueue. The dataplane will resume its work at the next notify virtqueue. When snapshot loads with loadvm we get a message: VQ 0 size 0x80 Guest index 0x15f5 inconsistent with Host index 0x0: delta 0x15f5 error while loading state for instance 0x0 of device '0000:00:08.0/virtio-blk' Error -1 while loading VM state to reproduce the error I used the following hmp commands: savevm snap1 loadvm snap1 qemu parameters: --enable-kvm -smp 4 -m 1024 -drive file=/var/lib/libvirt/images/centos6.4.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk0,id=virtio-disk0 -set device.virtio-disk0.x-data-plane=on Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Message-id: 1445859777-2982-1-git-send-email-den@openvz.org CC: Stefan Hajnoczi <stefanha@redhat.com> CC: "Michael S. Tsirkin" <mst@redhat.com> CC: Kevin Wolf <kwolf@redhat.com> CC: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-10-29virtio-scsi: convert to virtqueue_mapMichael S. Tsirkin
Note: virtqueue_map already validates input so virtio-scsi does not have to. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
2015-10-12scsi: switch from g_slice allocator to mallocPaolo Bonzini
Simplify memory allocation by sticking with a single API. GSlice is not that fast anyway (tcmalloc/jemalloc are better). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-10virtio: avoid leading underscores for helpersCornelia Huck
Commit ef546f1275f6563e8934dd5e338d29d9f9909ca6 ("virtio: add feature checking helpers") introduced a helper __virtio_has_feature. We don't want to use reserved identifiers, though, so let's rename __virtio_has_feature to virtio_has_feature and virtio_has_feature to virtio_vdev_has_feature. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-07-30virtio-scsi: use virtqueue_map_sg() when loading requestsStefan Hajnoczi
The VirtQueueElement struct is serialized during migration but the in_sg[]/out_sg[] iovec arrays are not usable on the destination host because the pointers are meaningless. Use virtqueue_map_sg() to refresh in_sg[]/out_sg[] to valid pointers based on in_addr[]/out_addr[] hwaddrs. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <1438262173-11546-2-git-send-email-stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-27virtio: get_features() can failJason Wang
Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-27virtio: set any_layout in virtio coreMichael S. Tsirkin
Exceptions: - virtio-blk - compat machine types Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-10virtio-scsi: move qdev properties into virtio-scsi.cShannon Zhao
As only one place in virtio-scsi.c uses DEFINE_VIRTIO_SCSI_PROPERTIES and DEFINE_VIRTIO_SCSI_FEATURES, there is no need to expose them. Inline them into virtio-scsi.c to avoid wrongly use. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-01virtio: make features 64bit wideGerd Hoffmann
Make features 64bit wide everywhere. On migration a full 64bit guest_features field is sent if one of the high bits is set, in addition to the lower 32bit guest_features field which must stay for compatibility reasons. That way we send the lower 32 feature bits twice, but the code is simpler because we don't have to split and compose the 64bit features into two 32bit fields. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-05-31virtio: rename VIRTIO_PCI_QUEUE_MAX to VIRTIO_QUEUE_MAXJason Wang
VIRTIO_PCI_QUEUE_MAX is not only used for pci, so rename it be generic. Cc: Amit Shah <amit.shah@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-04-28virtio-scsi: Move DEFINE_VIRTIO_SCSI_FEATURES to virtio-scsiShannon Zhao
So far virtio-scsi-device can't expose host features to guest while using virtio-mmio because it doesn't set DEFINE_VIRTIO_SCSI_FEATURES on backend or transport. The host features belong to the backends while virtio-scsi-pci, virtio-scsi-s390 and virtio-scsi-ccw set the DEFINE_VIRTIO_SCSI_FEATURES on transports. But they already have the ability to forward property accesses to the backend child. So if we move the host features to backends, it doesn't break the backwards compatibility for them and make host features work while using virtio-mmio. Move DEFINE_VIRTIO_SCSI_FEATURES to the backend virtio-scsi. The transports just sync the host features from backends. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2015-03-18virtio-scsi: Fix assert in virtio_scsi_push_eventFam Zheng
Hotplugging a scsi-disk may trigger the assertion in qemu_sgl_concat. qemu-system-x86_64: qemu/hw/scsi/virtio-scsi.c:115: qemu_sgl_concat: Assertion `skip == 0' failed. This is introduced by commit 55783a55 (virtio-scsi: work around bug in old BIOSes) which didn't check out_num when accessing out_sg[0].iov_len (the same to in sg). For virtio_scsi_push_event, looking into out_sg doesn't make sense because 0 req_size is intended. Cc: qemu-stable@nongnu.org [Cc'ing qemu-stable because 55783a55 did it too] Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1426233354-525-1-git-send-email-famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-03-11virtio-scsi: clean out duplicate cdb fieldMichael S. Tsirkin
cdb is now part of cmd, drop it from req. There's also nothing to check using build assert now. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
2015-03-11virtio-scsi: fix cdb/sense sizeMichael S. Tsirkin
Commit "virtio-scsi: use standard-headers" added cdb and sense into req/rep structures, which breaks uses of sizeof for these structures, since qemu adds its own arrays on top. To fix, redefine CDB/sense field size to 0. Reported-by: Fam Zheng <famz@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-03-09Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell
pci, pc, virtio fixes and cleanups A bunch of fixes all over the place. All of ACPI refactoring has been merged. Legacy pci commands have been dropped. virtio header cleanup initial patches from virtio-1.0 branch Signed-off-by: Michael S. Tsirkin <mst@redhat.com> * remotes/mst/tags/for_upstream: (130 commits) acpi: drop unused code aml-build: comment fix acpi-build: fix typo in comment acpi: update generated files vhost user:support vhost user nic for non msi guests aml-build: fix build for glib < 2.22 acpi: update generated files Makefile.target: binary depends on config-devices acpi-test-data: update after pci rewrite acpi, mem-hotplug: use PC_DIMM_SLOT_PROP in acpi_memory_plug_cb(). pci-hotplug-old: Has been dead for five major releases, bury pci: Give a few helpers internal linkage acpi: make build_*() routines static to aml-build.c pc: acpi: remove not used anymore ssdt-[misc|pcihp].hex.generated blobs pc: acpi-build: drop template patching and create PCI bus tree dynamically tests: ACPI: update pc/SSDT.bridge due to new alg of PCI tree creation pc: acpi-build: simplify PCI bus tree generation tests: add ACPI blobs for qemu with bridge cases tests: bios-tables-test: add support for testing bridges tests: ACPI test blobs update due to PCI0._CRS changes ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Conflicts: hw/pci/pci-hotplug-old.c
2015-03-02virtio-scsi: Allocate op blocker reason before blockingMax Reitz
s->blocker is really only used in hw/scsi/virtio-scsi.c; the only places where it is used in hw/scsi/virtio-scsi-dataplane.c is when it is allocated and when it is freed. That does not make a whole lot of sense (and is actually wrong because this leads to s->blocker potentially being NULL when blk_op_block_all() is called in virtio-scsi.c), so move the allocation and destruction of s->blocker to the device realization and unrealization in virtio-scsi.c, respectively. Case in point: $ echo -e 'eject drv\nquit' | \ x86_64-softmmu/qemu-system-x86_64 \ -monitor stdio -machine accel=qtest -display none \ -object iothread,id=thr -device virtio-scsi-pci,iothread=thr \ -drive if=none,file=test.qcow2,format=qcow2,id=drv \ -device scsi-cd,drive=drv Without this patch: (qemu) eject drv [1] 10102 done 10103 segmentation fault (core dumped) With this patch: (qemu) eject drv Device 'drv' is busy: block device is in use by data plane (qemu) quit Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <1425057113-26940-1-git-send-email-mreitz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-02-27virtio-scsi-dataplane: Call blk_set_aio_context within BQLFam Zheng
It's not safe to call blk_set_aio_context from outside BQL because of the bdrv_drain_all there. Let's put it in the hotplug callback which will be called by qdev device realization for each scsi device attached to the bus. Signed-off-by: Fam Zheng <famz@redhat.com> Message-Id: <1423969591-23646-3-git-send-email-famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-02-26virtio: add feature checking helpersCornelia Huck
Add a helper function for checking whether a bit is set in the guest features for a vdev as well as one that works on a feature bit set. Convert code that open-coded this: It cleans up the code and makes it easier to extend the guest feature bits. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-02-26virtio-scsi: use standard-headersMichael S. Tsirkin
Drop duplicated code. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
2015-01-27virtio: fix feature bit checksCornelia Huck
Several places check against the feature bit number instead of against the feature bit. Fix them. Cc: qemu-stable@nongnu.org Reported-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-15scsi: Use g_new() & friends where that makes obvious senseMarkus Armbruster
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer, for two reasons. One, it catches multiplication overflowing size_t. Two, it returns T * rather than void *, which lets the compiler catch more type errors. This commit only touches allocations with size arguments of the form sizeof(T). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-11-07virtio-scsi: work around bug in old BIOSesPaolo Bonzini
Old BIOSes left some padding by mistake after the req_size/resp_size. New QEMU does not like it, thinking it is a bidirectional command. As a workaround, we can check if the ANY_LAYOUT bit is set; if not, we always consider the first buffer as the virtio-scsi request/response, because, back when QEMU did not support ANY_LAYOUT, it expected the payload to start at the second element of the iovec. This can show up during migration. Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-31virtio-scsi: Fix num_queue input validationFam Zheng
We need to count the ctrlq and eventq, and also cleanup before returning. Besides, the format string should be unsigned. The number could never be less than zero. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-31virtio-scsi: Fix memory leak when realize failedFam Zheng
Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-27hw/scsi/virtio-scsi.c: fix the "type" use error in virtio_scsi_handle_ctrlBin Wu
The local variable "type" in virtio_scsi_handle_ctl represents the tmf command type from the guest and it has the same meaning as the req->req.tmf.type. However, before the invoking of virtio_scsi_parse_req the req->req.tmf.type doesn't has the correct value(just initialized to zero). Therefore, we need to use the "type" variable to judge the case. Cc: qemu-stable@nongnu.org Signed-off-by: Bin Wu <wu.wubin@huawei.com> [Actually make it compile, "type" must be uint32_t in order to pass it to virtio_tswap32s. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-27virtio-scsi: sense in virtio_scsi_command_completeTing Wang
If req->resp.cmd.status is not GOOD, the address of sense for qemu_iovec_from_buf should be modified from &req->resp to sense. Cc: qemu-stable@nongnu.org Signed-off-by: Ting Wang <kathy.wangting@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-23virtio-scsi-dataplane: Add op blockerFam Zheng
We need this to protect dataplane thread from race conditions with block jobs until the latter is made dataplane-safe. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-20hw: Convert from BlockDriverState to BlockBackend, mostlyMarkus Armbruster
Device models should access their block backends only through the block-backend.h API. Convert them, and drop direct includes of inappropriate headers. Just four uses of BlockDriverState are left: * The Xen paravirtual block device backend (xen_disk.c) opens images itself when set up via xenbus, bypassing blockdev.c. I figure it should go through qmp_blockdev_add() instead. * Device model "usb-storage" prompts for keys. No other device model does, and this one probably shouldn't do it, either. * ide_issue_trim_cb() uses bdrv_aio_discard() instead of blk_aio_discard() because it fishes its backend out of a BlockAIOCB, which has only the BlockDriverState. * PC87312State has an unused BlockDriverState[] member. The next two commits take care of the latter two. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-10-15scsi: Convert virtio-scsi HBA to hotplug handler APIIgor Mammedov
Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-09virtio-scsi: fix use-after-free of VirtIOSCSIReqPaolo Bonzini
scsi_req_continue can complete the request and cause the VirtIOSCSIReq to be freed. Fetch req->sreq just once to avoid the bug. Reported-by: Richard Jones <rjones@redhat.com> Tested-by: Richard Jones <rjones@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-30virtio-scsi: Handle TMF request cancellation asynchronouslyFam Zheng
For VIRTIO_SCSI_T_TMF_ABORT_TASK and VIRTIO_SCSI_T_TMF_ABORT_TASK_SET, use scsi_req_cancel_async to start the cancellation. Because each tmf command may cancel multiple requests, we need to use a counter to track the number of remaining requests we still need to wait for. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>