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2013-03-18Add efi rom binariesGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-03-18Add Makefile rules to build nic rom binaries with efi supportGerd Hoffmann
"make -C roms efirom" will build rom binaries with EFI support. They are composed from three images: legacy bios, efi ia32 and efi x64. So netbooting via SeaBIOS will continue to work like it does today, and additionally we get network support for EFI. This target needs the EfiRom utility (shipped with edk2) somewhere in the $PATH. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-03-18Update ipxe submodule to latest masterGerd Hoffmann
Needed for efi support. ipxe is grown a bit, so *not* recompiling the (non-efi) pxe roms because that would make some pxe roms larger than 64k, which in turn would be a guest-visible change because the rom bar size grows from 64k to 128k. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-03-18Add Makefile rules to build nic rom binariesGerd Hoffmann
"make -C roms pxerom" will build the ipxe roms and update the binaries in pc-bios/, i.e. it basically documents how the build process of our current nic roms works. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-03-17s390: Fix cpu refactoring fallout.Cornelia Huck
Commit 259186a7 "cpu: Move halted and interrupt_request fields to CPUState" seems to have missed one instance in target-s390x/kvm.c: /home/cohuck/git/qemu/target-s390x/kvm.c: In function ‘kvm_arch_process_async_events’: /home/cohuck/git/qemu/target-s390x/kvm.c:319: error: ‘CPUS390XState’ has no member named ‘halted’ /home/cohuck/git/qemu/target-s390x/kvm.c:320: warning: control reaches end of non-void function make[1]: *** [target-s390x/kvm.o] Error 1 Let's just switch to cs->halted. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Alexander Graf <agraf@suse.de> Acked-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-03-17Merge branch 'arm-devs.next' of git://git.linaro.org/people/pmaydell/qemu-armBlue Swirl
* 'arm-devs.next' of git://git.linaro.org/people/pmaydell/qemu-arm: xilinx_spips: QOM styling fixes xilinx_spips: Add missing dual-bus snoop commands xilinx_spips: Fix bus setup conditional check xilinx_spips: Set unused IRQs to NULL xilinx_zynq: added pl330 to machine model pl330: Initial version iov: Factor out hexdumper hw/vexpress: Set reset values for daughterboard oscillators hw/arm_sysctl: Implement SYS_CFG_OSC function hw/vexpress: Pass voltage sensor properties to sysctl device hw/arm_sysctl: Implement SYS_CFG_VOLT qdev: Implement (variable length) array properties hw/arm_sysctl: Convert from qdev init to instance_init hw/arm_sysctl: Implement SYS_CFG_DVIMODE as a no-op hw/arm_sysctl: Implement SYS_CFG_MUXFPGA writes as a no-op hw/arm_sysctl: Handle SYS_CFGCTRL in a more structured way hw/vexpress: Pass proc_id via VEDBoardInfo
2013-03-17target-mips: fix rndrashift_short_acc and code for EXTR_ instructionsPetar Jovanovic
Fix for rndrashift_short_acc to set correct value to higher 64 bits. This change also corrects conditions when bit 23 of the DSPControl register is set. The existing test files have been extended with several examples that trigger the issues. One bug/example in the test file for EXTR_RS_W has been found and reported by Klaus Peichl. Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2013-03-15xilinx_spips: QOM styling fixesPeter Crosthwaite
Few fixes for the latest QOM styling guides. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: de9daeee6c142e8b57ad042fd680cedcdc94d2fc.1362373359.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15xilinx_spips: Add missing dual-bus snoop commandsNathan Rossi
Added additional commands to the switch to check for when snooping commands in dual bus mode setups. Cleaned up code to use an enum. Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 848c116c711dab0af10729a487968384aadd9faf.1362373359.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15xilinx_spips: Fix bus setup conditional checkNathan Rossi
The R_LQPSI_CFG register has the LQSPI_CFG_SEP_BUS and LQSPI_CFG_TWO_MEM bits. Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: d76c8e364c80a42352ae4f0661aff2cd17ad32a4.1362373359.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15xilinx_spips: Set unused IRQs to NULLPeter Crosthwaite
Unused CS lines should init to 0 to avoid segfaulting when accessing an unattached QSPI controller. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: c1e45198032106e69e8fe9339fc2e6348d524fcd.1362373359.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15xilinx_zynq: added pl330 to machine modelPeter Crosthwaite
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 5bc295bd2aa50dfe573f428574dbd7d8add7b3f8.1361853677.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15pl330: Initial versionPeter Crosthwaite
Device model for Primecell PL330 DMA controller. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Tested-by: Igor Mitsyanko <i.mitsyanko@samsung.com> Reviewed-by: Igor Mitsyanko <i.mitsyanko@samsung.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 098aac26233d7334bed2bca4f06f539638ca6d24.1361853677.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15iov: Factor out hexdumperPeter Crosthwaite
Factor out the hexdumper functionality from iov for all to use. Useful for creating verbose debug printfery that dumps packet data. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: faaac219c55ea586d3f748befaf5a2788fd271b8.1361853677.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15hw/vexpress: Set reset values for daughterboard oscillatorsPeter Maydell
Set the reset values for the VExpress daughterboard oscillators via the new sysctl properties. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15hw/arm_sysctl: Implement SYS_CFG_OSC functionPeter Maydell
Implement the SYS_CFG_OSC function. Since the idea of programmable clock rates doesn't make much sense for QEMU, we simply allow the clock rate to be read back as written. The number and value of the daughterboard oscillators varies between daughterboards, so we provide an array property to allow their reset values to be configured. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15hw/vexpress: Pass voltage sensor properties to sysctl devicePeter Maydell
Pass voltage sensor properties to the sysctl device. Since these are daughterboard specific, we specify them via the VEDBoardInfo structure. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1359985476-29380-9-git-send-email-peter.maydell@linaro.org
2013-03-15hw/arm_sysctl: Implement SYS_CFG_VOLTPeter Maydell
Implement the SYS_CFG_VOLT registers which return the voltage of various supplies on motherboard and daughterboard. Since QEMU implements a perfectly stable power supply these registers always return a constant value. The number and value of the daughterboard voltages is dependent on the specific daughterboard, so we use a property array to allow the board to configure them appropriately. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15qdev: Implement (variable length) array propertiesPeter Maydell
Add support for declaring array properties for qdev devices. These work by defining an initial static property 'len-arrayname' which the user of the device should set to the desired size of the array. When this property is set, memory is allocated for the array elements, and dynamic properties "arrayname[0]", "arrayname[1]"... are created so the user of the device can then set the values of the individual array elements. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15hw/arm_sysctl: Convert from qdev init to instance_initPeter Maydell
Convert this device from old-style qdev init to an instance_init function. We don't need a realize function yet, though. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15hw/arm_sysctl: Implement SYS_CFG_DVIMODE as a no-opPeter Maydell
SYS_CFG_DVIMODE allows the guest to select whether the output DVI signal is VGA, SVGA, XGA, SGA or UXGA. Since this makes no difference to QEMU, implement writes as a no-op so Linux doesn't complain. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15hw/arm_sysctl: Implement SYS_CFG_MUXFPGA writes as a no-opPeter Maydell
SYS_CFG_MUXFPGA allows the guest to select whether the video output should come from the motherboard's LCD controller or the daughterboard's one. Since QEMU doesn't currently support selecting the video output like this, implement as a no-op, so Linux doesn't complain about the register not being implemented. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15hw/arm_sysctl: Handle SYS_CFGCTRL in a more structured wayPeter Maydell
The SYS_CFGCTRL register consists of separate fields for DCC, function, site, position and device, as well as a read/write bit. Refactor the code handling SYS_CFGCTRL writes to make it easier to add support for functions like SYS_CFG_OSC which support multiple device fields. We also pull the handling out into its own function for clarity, as there are potentially a lot of implementable subfunctions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15hw/vexpress: Pass proc_id via VEDBoardInfoPeter Maydell
Pass the daughterboard-specific proc_id property to the code that creates the sysctl device via the VEDBoardInfo struct, rather than by having the daughterboard init function write to a uint32_t* argument. This is a cleaner way to pass the info around, and is in line with the way we are going to handle voltage and oscillator initialization. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-03-15Fix TAGS creationDavid Gibson
Currently the Makefile creates TAGS for emacs with the command: find "$(SRC_PATH)" -name '*.[hc]' -print0 | xargs -0 etags That works only if xargs ends up invoking etags just once. If xargs runs etags several times, as it will if there are enough files, then the later invocations will overwrite the output from the earlier invocations. This patch uses the etags --append option to fix the bug. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Message-id: 1363057048-21534-1-git-send-email-david@gibson.dropbear.id.au Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-15Merge remote-tracking branch 'stefanha/block' into stagingAnthony Liguori
# By Stefan Hajnoczi (14) and others # Via Stefan Hajnoczi * stefanha/block: (28 commits) blockdev: Fix up copyright and permission notice qemu-iotests: use -nographic in test case 007 qemu-iotests: add tests for rebasing zero clusters dataplane: fix hang introduced by AioContext transition coroutine: use AioContext for CoQueue BH threadpool: drop global thread pool block: add bdrv_get_aio_context() aio: add a ThreadPool instance to AioContext threadpool: add thread_pool_new() and thread_pool_free() threadpool: move globals into struct ThreadPool main-loop: add qemu_get_aio_context() sheepdog: set io_flush handler in do_co_req sheepdog: use non-blocking fd in coroutine context qcow2: make is_allocated return true for zero clusters qcow2: drop unnecessary flush in qcow2_update_snapshot_refcount() qcow2: drop flush in update_cluster_refcount() qcow2: flush in qcow2_update_snapshot_refcount() qcow2: set L2 cache dependency in qcow2_alloc_bytes() qcow2: flush refcount cache correctly in qcow2_write_snapshots() qcow2: flush refcount cache correctly in alloc_refcount_block() ...
2013-03-15Merge remote-tracking branch 'cohuck/virtio-ccw-upstr' into stagingAnthony Liguori
# By Christian Borntraeger (1) and Cornelia Huck (1) # Via Cornelia Huck * cohuck/virtio-ccw-upstr: virtio-ccw: Wire up virtio-rng. virtio-ccw: remove qdev_unparent in unplug routing
2013-03-15blockdev: Fix up copyright and permission noticeMarkus Armbruster
Screwed up in commit 666daa68. Thanks to Kevin Wolf for reminding me to fix this. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-15qemu-iotests: use -nographic in test case 007Stefan Hajnoczi
A comment explains that -nographic hangs test case 007. This is no longer the case so add -nographic. This makes the test suite faster and more pleasant to run since no windows pop up. I am not sure exactly when -nographic starting working for this case but there is no fundamental reason why graphics are needed here. Make sure the serial port is not on stdio, it would conflict with the monitor. Also remove unnecessary trailing whitespace on these lines. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Tested-by: Kevin Wolf <kwolf@redhat.com>
2013-03-15qemu-iotests: add tests for rebasing zero clustersPaolo Bonzini
If zero clusters are erroneously treated as unallocated, "qemu-img rebase" will copy the backing file's contents onto the cluster. The bug existed also in image streaming, but since the root cause was in qcow2's is_allocated implementation it is enough to test it with qemu-img. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-15dataplane: fix hang introduced by AioContext transitionPaolo Bonzini
The bug is that the EventNotifiers do have a NULL io_flush callback. Because _none_ of the callbacks on the dataplane AioContext have such a callback, aio_poll will simply do nothing. Fixed by adding the callbacks: the ioeventfd will always be polled (this can change in the future to pause/resume the processing during live snapshots or similar operations); the ioqueue will be polled if there are outstanding requests. I must admit I have screwed up my testing somehow, because commit 2c20e71 does not work even if cherry-picked on top of 1.4.0, and this patch fixes it there as well. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-15coroutine: use AioContext for CoQueue BHStefan Hajnoczi
CoQueue uses a BH to awake coroutines that were made ready to run again using qemu_co_queue_next() or qemu_co_queue_restart_all(). The BH currently runs in the iothread AioContext and would break coroutines that run in a different AioContext. This is a slightly tricky problem because the lifetime of the BH exceeds that of the CoQueue. This means coroutines can be awoken after CoQueue itself has been freed. Also, there is no qemu_co_queue_destroy() function which we could use to handle freeing resources. Introducing qemu_co_queue_destroy() has a ripple effect of requiring us to also add qemu_co_mutex_destroy() and qemu_co_rwlock_destroy(), as well as updating all callers. Avoid doing that. We also cannot switch from BH to GIdle function because aio_poll() does not dispatch GIdle functions. (GIdle functions make memory management slightly easier because they free themselves.) Finally, I don't want to move unlock_queue and unlock_bh into AioContext. That would break encapsulation - AioContext isn't supposed to know about CoQueue. This patch implements a different solution: each qemu_co_queue_next() or qemu_co_queue_restart_all() call creates a new BH and list of coroutines to wake up. Callers tend to invoke qemu_co_queue_next() and qemu_co_queue_restart_all() occasionally after blocking I/O, so creating a new BH for each call shouldn't be massively inefficient. Note that this patch does not add an interface for specifying the AioContext. That is left to future patches which will convert CoQueue, CoMutex, and CoRwlock to expose AioContext. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-15threadpool: drop global thread poolStefan Hajnoczi
Now that each AioContext has a ThreadPool and the main loop AioContext can be fetched with bdrv_get_aio_context(), we can eliminate the concept of a global thread pool from thread-pool.c. The submit functions must take a ThreadPool* argument. block/raw-posix.c and block/raw-win32.c use aio_get_thread_pool(bdrv_get_aio_context(bs)) to fetch the main loop's ThreadPool. tests/test-thread-pool.c must be updated to reflect the new thread_pool_submit() function prototypes. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-15block: add bdrv_get_aio_context()Stefan Hajnoczi
For now bdrv_get_aio_context() is just a stub that calls qemu_aio_get_context() since the block layer is currently tied to the main loop AioContext. Add the stub now so that the block layer can begin accessing its AioContext. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-15aio: add a ThreadPool instance to AioContextStefan Hajnoczi
This patch adds a ThreadPool to AioContext. It's possible that some AioContext instances will never use the ThreadPool, so defer creation until aio_get_thread_pool(). The reason why AioContext should have the ThreadPool is because the ThreadPool is bound to a AioContext instance where the work item's callback function is invoked. It doesn't make sense to keep the ThreadPool pointer anywhere other than AioContext. For example, block/raw-posix.c can get its AioContext's ThreadPool and submit work. Special note about headers: I used struct ThreadPool in aio.h because there is a circular dependency if aio.h includes thread-pool.h. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-15threadpool: add thread_pool_new() and thread_pool_free()Stefan Hajnoczi
ThreadPool is tied to an AioContext through its event notifier, which dictates in which AioContext the work item's callback function will be invoked. In order to support multiple AioContexts we need to support multiple ThreadPool instances. This patch adds the new/free functions. The free function deserves special attention because it quiesces remaining worker threads. This requires a new condition variable and a "stopping" flag to let workers know they should terminate once idle. We never needed to do this before since the global threadpool was not explicitly destroyed until process termination. Also stash the AioContext pointer in ThreadPool so that we can call aio_set_event_notifier() in thread_pool_free(). We didn't need to hold onto AioContext previously since there was no free function. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-15threadpool: move globals into struct ThreadPoolStefan Hajnoczi
Move global variables into a struct so multiple thread pools can be supported in the future. This patch does not change thread-pool.h interfaces. There is still a global thread pool and it is not yet possible to create/destroy individual thread pools. Moving the variables into a struct first makes later patches easier to review. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-15main-loop: add qemu_get_aio_context()Stefan Hajnoczi
It is very useful to get the main loop AioContext, which is a static variable in main-loop.c. I'm not sure whether qemu_get_aio_context() will be necessary in the future once devices focus on using their own AioContext instead of the main loop AioContext, but for now it allows us to refactor code to support multiple AioContext while actually passing the main loop AioContext. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-15sheepdog: set io_flush handler in do_co_reqMORITA Kazutaka
If an io_flush handler is not set, qemu_aio_wait doesn't invoke callbacks. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-15sheepdog: use non-blocking fd in coroutine contextMORITA Kazutaka
Using a blocking socket in the coroutine context reduces the chance of switching to other work. This patch makes the sheepdog driver use a non-blocking fd always. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-15qcow2: make is_allocated return true for zero clustersPaolo Bonzini
Otherwise, live migration of the top layer will miss zero clusters and let the backing file show through. This also matches what is done in qed. QCOW2_CLUSTER_ZERO clusters are invalid in v2 image files. Check this directly in qcow2_get_cluster_offset instead of replicating the test everywhere. Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-15qcow2: drop unnecessary flush in qcow2_update_snapshot_refcount()Stefan Hajnoczi
We already flush when the function completes. There is no need to flush after every compressed cluster. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-03-15qcow2: drop flush in update_cluster_refcount()Stefan Hajnoczi
The update_cluster_refcount() function increments/decrements a cluster's refcount and then returns the new refcount value. There is no need to flush since both update_cluster_refcount() callers already take care of this: 1. qcow2_alloc_bytes() calls update_cluster_refcount() when compressed sectors will be appended to an existing cluster with enough free space. qcow2_alloc_bytes() already flushes so there is no need to do so in update_cluster_refcount(). 2. qcow2_update_snapshot_refcount() sets a cache dependency on refcounts if it needs to update L2 entries. It also flushes before completing. Removing this flush significantly speeds up qcow2 snapshot creation: $ qemu-img create -f qcow2 test.qcow2 -o size=50G,preallocation=metadata $ time qemu-img snapshot -c new test.qcow2 Time drops from more than 3 minutes to under 1 second. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-03-15qcow2: flush in qcow2_update_snapshot_refcount()Stefan Hajnoczi
Users of qcow2_update_snapshot_refcount() do not flush consistently. qcow2_snapshot_create() flushes but qcow2_snapshot_goto() and qcow2_snapshot_delete() do not. Solve this by moving the bdrv_flush() into qcow2_update_snapshot_refcount(). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-03-15qcow2: set L2 cache dependency in qcow2_alloc_bytes()Stefan Hajnoczi
Compressed writes use qcow2_alloc_bytes() to allocate space with byte granularity. The affected clusters' refcounts will be incremented but we do not need to flush yet. Set a L2 cache dependency on the refcount block cache, so that the refcounts get written out before the L2 updates. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-03-15qcow2: flush refcount cache correctly in qcow2_write_snapshots()Stefan Hajnoczi
Since qcow2 metadata is cached we need to flush the caches, not just the underlying file. Use bdrv_flush(bs) instead of bdrv_flush(bs->file). Also add the error return path when bdrv_flush() fails and move the flush after checking for qcow2_alloc_clusters() failure so that the qcow2_alloc_clusters() error return value takes precedence. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-03-15qcow2: flush refcount cache correctly in alloc_refcount_block()Stefan Hajnoczi
update_refcount() affects the refcount cache, it does not write to disk. Therefore bdrv_flush(bs->file) does nothing. We need to flush the refcount cache in order to write out the refcount updates! While we're here also add error returns when qcow2_cache_flush() fails. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-03-15qcow2: Allow lazy refcounts to be enabled on the command lineKevin Wolf
qcow2 images now accept a boolean lazy_refcounts options. Use it like this: -drive file=test.qcow2,lazy_refcounts=on If the option is specified on the command line, it overrides the default specified by the qcow2 header flags that were set when creating the image. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-15block: Support driver specific options in drive_init()Kevin Wolf
Any non-default -drive options are now passed down to the block drivers. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-15blockdev: Keep a copy of DriveInfo.serialKevin Wolf
Pointing to a QemuOpts element is surprising and can lead to subtle use-after-free errors when the QemuOpts is freed after all options are parsed. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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