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2011-12-06qapi: Convert pmemsaveLuiz Capitulino7-43/+66
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06qapi: Convert memsaveLuiz Capitulino7-47/+97
Please, note that the QMP command has a new 'cpu-index' parameter. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06QError: Introduce QERR_IO_ERRORLuiz Capitulino2-0/+7
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06console: Drop unused prototypesLuiz Capitulino1-2/+0
Commit e235cec3762d2aa20b548114ea7b172113690463 converted the query-mice command to the QAPI but forgot to remove two prototypes used by the old QAPI. Drop them. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06qapi: Complete system_powerdown conversionLuiz Capitulino2-14/+1
Commit 5bc465e4b1b6f4582a400c0a7033a1c841744278 converted only the HMP part of the system_powerdown command to the QAPI, this commit completes it by converting the QMP part too. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06Drop test-visitorLuiz Capitulino2-342/+1
It has been superseded by the two previous commits, which introduced the test-qmp-output-visitor and test-qmp-input-visitor tests. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06Introduce test-qmp-input-visitorLuiz Capitulino3-2/+275
Contains unit-tests for the QMP input visitor implementation. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06Introduce test-qmp-output-visitorLuiz Capitulino4-2/+434
Contains unit-tests for the QMP output visitor implementation. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06configure: Don't mix glib and libcheck testsLuiz Capitulino1-2/+3
test-coroutine is listed as a libcheck test in the 'checks' variable. This is not right because 'make check' won't run test-coroutine if libcheck tests are not enabled (either because libcheck isn't detected or because --disable-check-utests is passed). Tests using the glib test framework are independent from libcheck and afaik are always present (although having a configure switch to disable them is probably worth it). Untangle test-coroutine from the libcheck tests by introducing the 'test_progs' variable and using it to generate the test list used by 'make check'. Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06qmp: add test tool for QMPMark Wu1-0/+126
Anthony wrote this quickly to aid in testing. It's similar to qmp-shell with a few important differences: 1) It is not interactive. That makes it useful for scripting. 2) qmp-shell: (QEMU) set_password protocol=vnc password=foo 3) qmp: $ qmp set_password --protocol=vnc --password=foo 4) Extensible, git-style interface. If an invalid command name is passed, it will try to exec qmp-$1. 5) It attempts to pretty print the JSON responses in a shell friendly format such that tools can work with the output. Hope others will also find it useful. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Mark Wu <wudxw@linux.vnet.ibm.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-06docs: Add writing-qmp-commands.txtLuiz Capitulino1-0/+642
Explains how to write QMP commands using the QAPI. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-12-05hw/arm_gic.c: Ignore attempts to complete nonexistent IRQsPeter Maydell1-9/+18
Ignore attempts to complete non-existent IRQs; this fixes a buffer overrun if the guest writes a bad value to the GICC_EOIR register. (This case is UNPREDICTABLE so ignoring it is a valid choice.) Note that doing nothing if the guest writes 1023 to this register is not in fact a change in behaviour: the old code would also always do nothing in this case but in a non-obvious way. (The buffer overrun was noted by Coverity, see bug 887883.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2011-12-05configure: Drop armv4l/armv4b distinction in $cpuPeter Maydell1-14/+12
Drop the distinction between armv4l/armv4b in the $cpu variable (ie host cpu type) in favour of calling everything 'arm'. This makes it the same as the ARCH setting and removes some special casing. The only thing we were using the distinction for was to decide which endianness to use in cross compilation; do a cpp define check there instead. Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2011-12-05pseries: Fix array overrun bug in PCI codeDavid Gibson1-1/+1
spapr_populate_pci_devices() containd a loop with PCI_NUM_REGIONS (7) iterations. However this overruns the 'bars' global array, which only has 6 elements. In fact we only want to run this loop for things listed in the bars array, so this patch corrects the loop bounds to reflect that. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2011-12-05target-arm/helper.c: Don't allocate TCG resources unless TCG enabledPeter Maydell1-1/+1
Don't call arm_translate_init() (which allocates TCG resources) unless TCG is enabled. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2011-12-05target-arm/translate.c: Fix slightly misleading comment in Thumb decoderPeter Maydell1-3/+5
Clarify some slightly misleading comments in the Thumb decoder's handling of the memory hint space -- in particular one code path marked as 'UNPREDICTABLE or unallocated hint' also includes some legitimate preload instructions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2011-12-05Fix hw_error messages from arm_timer.cPeter Chubb1-4/+4
Two of the calls to hw_error() in arm_timer.c contain the wrong function name. As suggested by Andreas Färber, use the C99 standard __func__ macro to get the correct name, instead of putting the name directly into the code. Signed-off-by: Peter Chubb <peter.chubb@nicta.com.au> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2011-12-05Merge remote-tracking branch 'kwolf/for-anthony' into stagingAnthony Liguori40-343/+1329
2011-12-05Merge remote-tracking branch 'aneesh/1.0-fixes' into stagingAnthony Liguori14-72/+130
2011-12-05Merge remote-tracking branch 'stefanha/trivial-patches' into stagingAnthony Liguori51-72/+71
2011-12-05Merge remote-tracking branch 'qemu-kvm/memory/batch' into stagingAnthony Liguori168-2730/+2396
2011-12-05Update version for 1.1 development branchAnthony Liguori1-1/+1
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-05block: convert qemu_aio_flush() calls to bdrv_drain_all()Stefan Hajnoczi12-13/+34
Many places in QEMU call qemu_aio_flush() to complete all pending asynchronous I/O. Most of these places actually want to drain all block requests but there is no block layer API to do so. This patch introduces the bdrv_drain_all() API to wait for requests across all BlockDriverStates to complete. As a bonus we perform checks after qemu_aio_wait() to ensure that requests really have finished. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: wait_for_overlapping_requests() deadlock detectionStefan Hajnoczi1-0/+8
Debugging a reentrant request deadlock was fun but in the future we need a quick and obvious way of detecting such bugs. Add an assert that checks we are not about to deadlock when waiting for another request. Suggested-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: implement bdrv_co_is_allocated() boundary casesStefan Hajnoczi1-8/+18
Cases beyond the end of the disk image are only implemented for block drivers that do not provide .bdrv_co_is_allocated(). It's worth making these cases generic so that block drivers that do implement .bdrv_co_is_allocated() also get them for free. Suggested-by: Mark Wu <wudxw@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05dma-helpers: Add trace eventsKevin Wolf2-0/+17
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-05cow: use bdrv_co_is_allocated()Stefan Hajnoczi1-3/+3
Now that bdrv_co_is_allocated() is available we can use it instead of the synchronous bdrv_is_allocated() interface. This is a follow-up that Kevin Wolf <kwolf@redhat.com> pointed out after applying the series that introduces bdrv_co_is_allocated(). It is safe to make cow_read() a coroutine_fn because its only caller is a coroutine_fn. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: add -drive copy-on-read=on|offStefan Hajnoczi4-3/+21
This patch adds the -drive copy-on-read=on|off command-line option: copy-on-read=on|off copy-on-read is "on" or "off" and enables whether to copy read backing file sectors into the image file. Copy-on-read avoids accessing the same backing file sectors repeatedly and is useful when the backing file is over a slow network. By default copy-on-read is off. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: core copy-on-read logicStefan Hajnoczi2-0/+73
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: request overlap detectionStefan Hajnoczi1-2/+43
Detect overlapping requests and remember to align to cluster boundaries if the image format uses them. This assumes that allocating I/O is performed in cluster granularity - which is true for qcow2, qed, etc. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: wait for overlapping requestsStefan Hajnoczi1-0/+35
When copy-on-read is enabled it is necessary to wait for overlapping requests before issuing new requests. This prevents races between the copy-on-read and a write request. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: add interface to toggle copy-on-readStefan Hajnoczi3-0/+28
The bdrv_enable_copy_on_read()/bdrv_disable_copy_on_read() functions can be used to programmatically enable or disable copy-on-read for a block device. Later patches add the actual copy-on-read logic. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: add request trackingStefan Hajnoczi2-1/+51
The block layer does not know about pending requests. This information is necessary for copy-on-read since overlapping requests must be serialized to prevent races that corrupt the image. The BlockDriverState gets a new tracked_request list field which contains all pending requests. Each request is a BdrvTrackedRequest record with sector_num, nb_sectors, and is_write fields. Note that request tracking is always enabled but hopefully this extra work is so small that it doesn't justify adding an enable/disable flag. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05coroutine: add qemu_co_queue_restart_all()Stefan Hajnoczi3-8/+14
It's common to wake up all waiting coroutines. Introduce the qemu_co_queue_restart_all() function to do this instead of looping over qemu_co_queue_next() in every caller. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05qemu-common: add QEMU_ALIGN_DOWN() and QEMU_ALIGN_UP() macrosStefan Hajnoczi1-0/+6
Add macros for aligning a number to a multiple, for example: QEMU_ALIGN_DOWN(500, 2000) = 0 QEMU_ALIGN_UP(500, 2000) = 2000 Since ALIGN_UP() is a common macro name use the QEMU_* namespace prefix. Hopefully this will protect us from included headers that leak something with a similar name. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: add bdrv_co_is_allocated() interfaceStefan Hajnoczi2-13/+26
This patch introduces the public bdrv_co_is_allocated() interface which can be used to query image allocation status while the VM is running. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: drop .bdrv_is_allocated() interfaceStefan Hajnoczi2-22/+18
Now that all block drivers have been converted to .bdrv_co_is_allocated() we can drop .bdrv_is_allocated(). Note that the public bdrv_is_allocated() interface is still available but is in fact a synchronous wrapper around .bdrv_co_is_allocated(). Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05cow: convert to .bdrv_co_is_allocated()Stefan Hajnoczi1-4/+4
The cow block driver does not keep internal state for cluster lookups. This means it is safe to perform cluster lookups in coroutine context without risk of race conditions that corrupt internal state. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05vdi: convert to .bdrv_co_is_allocated()Stefan Hajnoczi1-3/+3
It is trivial to switch from the synchronous .bdrv_is_allocated() interface to .bdrv_co_is_allocated() since vdi_is_allocated() does not block. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05vvfat: convert to .bdrv_co_is_allocated()Stefan Hajnoczi1-2/+2
It is trivial to switch from the synchronous .bdrv_is_allocated() interface to .bdrv_co_is_allocated() since vvfat_is_allocated() does not block. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: convert qcow2, qcow2, and vmdk to .bdrv_co_is_allocated()Stefan Hajnoczi3-11/+18
The qcow2, qcow, and vmdk block drivers are based on coroutines. They have a coroutine mutex which protects internal state. We can convert the .bdrv_is_allocated() function to .bdrv_co_is_allocated() by holding the mutex around the cluster lookup operation. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05qed: convert to .bdrv_co_is_allocated()Stefan Hajnoczi1-4/+11
The bdrv_qed_is_allocated() function is a synchronous wrapper around qed_find_cluster(), which performs the cluster lookup. In order to convert the synchronous function to a coroutine function we yield instead of using qemu_aio_wait(). Note that QED's cache is already safe for parallel requests so no locking is needed. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: add .bdrv_co_is_allocated()Stefan Hajnoczi2-0/+39
This patch adds the .bdrv_co_is_allocated() interface which is identical to .bdrv_is_allocated() but runs in coroutine context. Running in coroutine context implies that other coroutines might be performing I/O at the same time. Therefore it must be safe to run while the following BlockDriver functions are in-flight: .bdrv_co_readv() .bdrv_co_writev() .bdrv_co_flush() .bdrv_co_is_allocated() The new .bdrv_co_is_allocated() interface is useful because it can be used when a VM is running, whereas .bdrv_is_allocated() is a synchronous interface that does not cope with parallel requests. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05block: use public bdrv_is_allocated() interfaceStefan Hajnoczi1-1/+1
There is no need for bdrv_commit() to use the BlockDriver .bdrv_is_allocated() interface directly. Converting to the public interface gives us the freedom to drop .bdrv_is_allocated() entirely in favor of a new .bdrv_co_is_allocated() in the future. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-12-05qcow2: Fix error path in qcow2_snapshot_load_tmpKevin Wolf1-12/+22
If the bdrv_read() of the snapshot's L1 table fails, return the right error code and make sure that the old L1 table is still loaded and we don't break the BlockDriverState completely. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-05qcow2: Fix order in qcow2_snapshot_deleteKevin Wolf1-15/+33
First the snapshot must be deleted and only then the refcounts can be decreased. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-05qcow2: Fix order of refcount updates in qcow2_snapshot_gotoKevin Wolf2-18/+50
The refcount updates must be moved so that in the worst case we can get cluster leaks, but refcounts may never be too low. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-05qcow2: Return real error in qcow2_snapshot_gotoKevin Wolf1-11/+40
Besides fixing the return code, this adds some comments that make clear how the code works and that it potentially breaks images if we fail in the wrong place. Actually fixing this is left for the next patch. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-05qcow2: Rework qcow2_snapshot_create error handlingKevin Wolf1-14/+41
Increase refcounts only after allocating a new L1 table has succeeded in order to make leaks less likely. If writing the snapshot table fails, revert in-memory state to be consistent with that on disk. While at it, make it return the real error codes instead of -1. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-12-05qcow2: Cleanups and memleak fix in qcow2_snapshot_createKevin Wolf1-15/+11
sn->id_str could be leaked before this. The rest of this patch changes comments, fixes coding style or removes checks that are unnecessary with g_malloc. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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