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2013-05-03kvm-all: add kvm_run_exit tracepointKazuya Saito
This patch enable us to know exit reason of KVM_RUN. It will help us know where the trouble is caused. Signed-off-by: Kazuya Saito <saito.kazuya@jp.fujitsu.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-05-03kvm-all: add kvm_ioctl, kvm_vm_ioctl, kvm_vcpu_ioctl tracepointsKazuya Saito
This patch adds tracepoints at ioctl to kvm. Tracing these ioctl is useful for clarification whether the cause of troubles is qemu or kvm. Signed-off-by: Kazuya Saito <saito.kazuya@jp.fujitsu.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-05-01pvscsi: fix compilation on 32 bit hostsHervé Poussineau
This fixes the following error: In file included from qemu/include/trace.h:4:0, from trace/generated-events.c:3: ./trace/generated-tracers.h: In function ‘trace_pvscsi_get_sg_list’: ./trace/generated-tracers.h:4271:9: error: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 4 has type ‘size_t’ [-Werror=format] Signed-off-by: Hervé Poussineau <hpoussin@reactos.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-04-23usb: better speed mismatch error reportingGerd Hoffmann
Report the supported speeds for device and port in the error message. Also add the speeds to the tracepoint. And while being at it drop the redundant error message in usb_desc_attach, usb_device_attach will report the error anyway. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-04-19scsi: VMWare PVSCSI paravirtual device implementationDmitry Fleytman
Signed-off-by: Dmitry Fleytman <dmitry@daynix.com> Signed-off-by: Yan Vugenfirer <yan@daynix.com> [ Rename files to vmw_pvscsi, fix setting of hostStatus in pvscsi_request_cancelled - Paolo ] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-16Merge remote-tracking branch 'kraxel/usb.80' into stagingAnthony Liguori
# By Gerd Hoffmann (6) and Hans de Goede (1) # Via Gerd Hoffmann * kraxel/usb.80: use libusb for usb-host xhci: fix address device xhci: use slotid as device address xhci: fix portsc writes xhci: add xhci_cap_write xhci: remove leftover debug printf usb-serial: Remove double call to qemu_chr_add_handlers( NULL ) Message-id: 1366107190-30853-1-git-send-email-kraxel@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-16use libusb for usb-hostGerd Hoffmann
Reimplement usb-host on top of libusb. Reasons to do this: (1) Largely rewritten from scratch, nice opportunity to kill historical cruft. (2) Offload usbfs handling to libusb. (3) Have a single portable code base instead of bsd + linux variants. (4) Bring usb-host support to any platform supported by libusbx. For now this goes side-by-side to the existing code. That is only to simplify regression testing though, at the end of the day I want remove the old code and support libusb exclusively. Merge early in 1.5 cycle, remove the old code after 1.5 release or something like this. Thanks to qdev the old and new code can coexist nicely on linux. Just use "-device usb-host-linux" to use the old linux driver instead of the libusb one (which takes over the "usb-host" name). The bsd driver isn't qdev'ified so it isn't that easy for bsd. I didn't bother making it runtime switchable, so you have to rebuild qemu with --disable-libusb to get back the old code. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-04-16xhci: fix portsc writesGerd Hoffmann
Check for port reset first and skip everything else then. Add sanity checks for PLS updates. Add PLC notification when entering PLS_U0 state. This gets host-initiated port resume going on win8. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-04-16console: gui timer fixesGerd Hoffmann
Make gui update rate adaption code in gui_update() actually work. Sprinkle in a tracepoint so you can see the code at work. Remove the update rate adaption code in vnc and make vnc simply use the generic bits instead. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-04-16console: add trace eventsGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-04-16hw/vmware_vga.c: various vmware vga fixes.Gerd Hoffmann
Hardcode depth to 32 bpp. It effectively was that way before because that is the default surface depth, this just makes it explicit in the code. Rename depth to new_depth to make it consistent with the new_width + new_height names. In theory we can make new_depth changeable (i.e. allow the guest to fill in -- say -- 16 there). In practice the guests don't try, the X-Server refuses to start if you ask it to use 16bpp depth (via DefaultDepth in the Screen section). Always return the correct rmask+gmask+bmask values for the given new_depth. Fix mode setting to also verify at new_depth to make sure we have a correct DisplaySurface, even if the current video mode happes to be 16bpp (set by vgabios via bochs vbe interface). While being at it switch over to use qemu_create_displaysurface_from, so the surface is backed by guest-visible video memory and we save a memcpy. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-04-16hw/vmware_vga.c: add tracepoints for mmio reads+writesGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-04-03xhci: remove unimplemented printfsGerd Hoffmann
Replace them with a tracepoint, so they don't spam stderr by default. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-03-28Merge remote-tracking branch 'stefanha/block' into stagingAnthony Liguori
# By Kevin Wolf (22) and Peter Lieven (1) # Via Stefan Hajnoczi * stefanha/block: (23 commits) block: Fix direct use of protocols as driver for bdrv_open() qcow2: Gather clusters in a looping loop qcow2: Move cluster gathering to a non-looping loop qcow2: Allow requests with multiple l2metas qcow2: Use byte granularity in qcow2_alloc_cluster_offset() qcow2: Prepare handle_alloc/copied() for byte granularity qcow2: handle_copied(): Implement non-zero host_offset qcow2: handle_copied(): Get rid of keep_clusters parameter qcow2: handle_copied(): Get rid of nb_clusters parameter qcow2: Factor out handle_copied() qcow2: Clean up handle_alloc() qcow2: Finalise interface of handle_alloc() qcow2: handle_alloc(): Get rid of keep_clusters parameter qcow2: handle_alloc(): Get rid of nb_clusters parameter qcow2: Factor out handle_alloc() qcow2: Decouple cluster allocation from cluster reuse code qcow2: Change handle_dependency to byte granularity qcow2: Improve check for overlapping allocations qcow2: Handle dependencies earlier qcow2: Remove bogus unlock of s->lock ...
2013-03-28vl: add runstate_set tracepointKazuya Saito
This patch enables us to know RunState transition. It will be userful for investigation when the trouble occured in special event such like live migration, shutdown, suspend, and so on. Signed-off-by: Kazuya Saito <saito.kazuya@jp.fujitsu.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Factor out handle_copied()Kevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-28qcow2: Factor out handle_alloc()Kevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-03-18console: rework DisplaySurface handling [vga emu side]Gerd Hoffmann
Decouple DisplaySurface allocation & deallocation from DisplayState. Replace dpy_gfx_resize + dpy_gfx_setdata with a dpy_gfx_replace_surface function. This handles the graphic hardware emulation. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-03-18console: fix displaychangelisteners interfaceGerd Hoffmann
Split callbacks into separate Ops struct. Pass DisplayChangeListener pointer as first argument to all callbacks. Uninline a bunch of display functions and move them from console.h to console.c Signed-off-by: Gerd Hoffmann <kraxel@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>
2013-03-12Add search path support for qemu data files.Gerd Hoffmann
This patch allows to specify multiple directories where qemu should look for data files. To implement that the behavior of the -L switch is slightly different now: Instead of replacing the data directory the path specified will be appended to the data directory list. So when specifiying -L multiple times all directories specified will be checked, in the order they are specified on the command line, instead of just the last one. Additionally the default paths are always appended to the directory data list. This allows to specify a incomplete directory (such as the seabios out/ directory) via -L. Anything not found there will be loaded from the default paths, so you don't have to create a symlink farm for all the rom blobs. For trouble-shooting a tracepoint has been added, logging which blob has been loaded from which location. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 1362739344-8068-1-git-send-email-kraxel@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-11migration: add migrate_set_state tracepointKazuya Saito
Signed-off-by: Kazuya Saito <saito.kazuya@jp.fujitsu.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2013-03-05scsi: do not call scsi_read_data/scsi_write_data for a canceled requestPaolo Bonzini
Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-02-19usb-xhci: usb3 streamsGerd Hoffmann
Add streams support to the xhci emulation. No secondary streams yet, only linear stream arays are supported for now. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-01-29s390: Add new channel I/O based virtio transport.Cornelia Huck
Add a new virtio transport that uses channel commands to perform virtio operations. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-01-29s390: Virtual channel subsystem support.Cornelia Huck
Provide a mechanism for qemu to provide fully virtual subchannels to the guest. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-01-29s390: Add channel I/O instructions.Cornelia Huck
Provide handlers for (most) channel I/O instructions. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2013-01-25mirror: support arbitrarily-sized iterationsPaolo Bonzini
Yet another optimization is to extend the mirroring iteration to include more adjacent dirty blocks. This limits the number of I/O operations and makes mirroring efficient even with a small granularity. Most of the infrastructure is already in place; we only need to put a loop around the computation of the origin and sector count of the iteration. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-01-25mirror: support more than one in-flight AIO operationPaolo Bonzini
With AIO support in place, we can start copying more than one chunk in parallel. This patch introduces the required infrastructure for this: the buffer is split into multiple granularity-sized chunks, and there is a free list to access them. Because of copy-on-write, a single operation may already require multiple chunks to be available on the free list. In addition, two different iterations on the HBitmap may want to copy the same cluster. We avoid this by keeping a bitmap of in-flight I/O operations, and blocking until the previous iteration completes. This should be a pretty rare occurrence, though; as long as there is no overlap the next iteration can start before the previous one finishes. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-01-25mirror: switch mirror_iteration to AIOPaolo Bonzini
There is really no change in the behavior of the job here, since there is still a maximum of one in-flight I/O operation between the source and the target. However, this patch already introduces the AIO callbacks (which are unmodified in the next patch) and some of the logic to count in-flight operations and only complete the job when there is none. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-01-25mirror: perform COW if the cluster size is bigger than the granularityPaolo Bonzini
When mirroring runs, the backing files for the target may not yet be ready. However, this means that a copy-on-write operation on the target would fill the missing sectors with zeros. Copy-on-write only happens if the granularity of the dirty bitmap is smaller than the cluster size (and only for clusters that are allocated in the source after the job has started copying). So far, the granularity was fixed to 1MB; to avoid the problem we detected the situation and required the backing files to be available in that case only. However, we want to lower the granularity for efficiency, so we need a better solution. The solution is to always copy a whole cluster the first time it is touched. The code keeps a bitmap of clusters that have already been allocated by the mirroring job, and only does "manual" copy-on-write if the chunk being copied is zero in the bitmap. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-01-25block: implement dirty bitmap using HBitmapPaolo Bonzini
This actually uses the dirty bitmap in the block layer, and converts mirroring to use an HBitmapIter. Reviewed-by: Laszlo Ersek <lersek@redhat.com> (except block/mirror.c parts) Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-01-25add hierarchical bitmap data type and test casesPaolo Bonzini
HBitmaps provides an array of bits. The bits are stored as usual in an array of unsigned longs, but HBitmap is also optimized to provide fast iteration over set bits; going from one bit to the next is O(logB n) worst case, with B = sizeof(long) * CHAR_BIT: the result is low enough that the number of levels is in fact fixed. In order to do this, it stacks multiple bitmaps with progressively coarser granularity; in all levels except the last, bit N is set iff the N-th unsigned long is nonzero in the immediately next level. When iteration completes on the last level it can examine the 2nd-last level to quickly skip entire words, and even do so recursively to skip blocks of 64 words or powers thereof (32 on 32-bit machines). Given an index in the bitmap, it can be split in group of bits like this (for the 64-bit case): bits 0-57 => word in the last bitmap | bits 58-63 => bit in the word bits 0-51 => word in the 2nd-last bitmap | bits 52-57 => bit in the word bits 0-45 => word in the 3rd-last bitmap | bits 46-51 => bit in the word So it is easy to move up simply by shifting the index right by log2(BITS_PER_LONG) bits. To move down, you shift the index left similarly, and add the word index within the group. Iteration uses ffs (find first set bit) to find the next word to examine; this operation can be done in constant time in most current architectures. Setting or clearing a range of m bits on all levels, the work to perform is O(m + m/W + m/W^2 + ...), which is O(m) like on a regular bitmap. When iterating on a bitmap, each bit (on any level) is only visited once. Hence, The total cost of visiting a bitmap with m bits in it is the number of bits that are set in all bitmaps. Unless the bitmap is extremely sparse, this is also O(m + m/W + m/W^2 + ...), so the amortized cost of advancing from one bit to the next is usually constant. Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-01-22qxl: stop using non revision 4 rom fields for revision < 4Alon Levy
Signed-off-by: Alon Levy <alevy@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-01-19fw_cfg: Use void *, size_t instead of uint8_t *, uint32_t for blobsMarkus Armbruster
Many callers pass size_t, which gets silently truncated to uint32_t. Harmless, because all practical sizes are well below 4GiB. Clean it up anyway. Size overflow now fails assertions. Bonus: saves a whole bunch of silly casts. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-01-19fw_cfg: Replace debug prints by tracepointsMarkus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-01-10Merge branch 'master' of git://git.qemu.org/qemu into prep-upAndreas Färber
Conflicts: hw/Makefile.objs hw/ppc_prep.c Signed-off-by: Andreas Färber <andreas.faerber@web.de>
2013-01-08uhci: stop using portio listsGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-01-02dataplane: add virtio-blk data plane codeStefan Hajnoczi
virtio-blk-data-plane is a subset implementation of virtio-blk. It only handles read, write, and flush requests. It does this using a dedicated thread that executes an epoll(2)-based event loop and processes I/O using Linux AIO. This approach performs very well but can be used for raw image files only. The number of IOPS achieved has been reported to be several times higher than the existing virtio-blk implementation. Eventually it should be possible to unify virtio-blk-data-plane with the main body of QEMU code once the block layer and hardware emulation is able to run outside the global mutex. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-02dataplane: add virtqueue vring codeStefan Hajnoczi
The virtio-blk-data-plane cannot access memory using the usual QEMU functions since it executes outside the global mutex and the memory APIs are this time are not thread-safe. This patch introduces a virtqueue module based on the kernel's vhost vring code. The trick is that we map guest memory ahead of time and access it cheaply outside the global mutex. Once the hardware emulation code can execute outside the global mutex it will be possible to drop this code. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2012-12-17spice-qemu-char: add spiceport chardevMarc-André Lureau
Add a new spice chardev to allow arbitrary communication between the host and the Spice client via the spice server. Examples: This allows the Spice client to have a special port for the qemu monitor: ... -chardev spiceport,name=org.qemu.monitor,id=monitorport -mon chardev=monitorport v2: - remove support for chardev to chardev linking - conditionnaly compile with SPICE_SERVER_VERSION Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-12-14pseries: Add tracepoints to the XICS interrupt controllerDavid Gibson
This patch adds tracing / debugging calls to the XICS interrupt controller implementation used on the pseries machine. Signed-off-by: Ben Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2012-11-16usb-host: update tracingGerd Hoffmann
Now that we have separate status and length fields in USBPacket update the completion tracepoint to log both. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-11-16ehci: handle dma errorsGerd Hoffmann
Starting with commit 1c380f9460522f32c8dd2577b2a53d518ec91c6d dma transfers can actually fail. This patch makes ehci keep track of the busmaster bit in pci config space, by setting/clearing the dma_context pointer. Attempts to dma without context will result in raising HSE (Host System Error) interrupt and stopping the host controller. This patch fixes WinXP not booting with a usb stick attached to ehci. Root cause is seabios activating ehci so you can boot from the stick, and WinXP clearing the busmaster bit before resetting the host controller, leading to ehci actually trying dma while it is disabled. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-11-05hw/qxl: qxl_send_events: nop if stoppedAlon Levy
Added a trace point for easy logging. RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=870972 Signed-off-by: Alon Levy <alevy@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-11-01Merge remote-tracking branch 'kraxel/usb.69' into stagingAnthony Liguori
* kraxel/usb.69: (31 commits) usb-redir: Allow redirecting super speed devices to high speed controllers usb-redir: Allow to attach USB 2.0 devices to 1.1 host controller usb-redir: Use reject rather the disconnect on bad ep info usb-redir: Add an usbredir_setup_usb_eps() helper function usb-redir: Add support for input pipelining usb-redir: Add support for 32 bits bulk packet length combined-packet: Add a workaround for Linux usbfs + live migration usb: Add packet combining functions uhci: Don't crash on device disconnect uhci: Add a uhci_handle_td_error() helper function usb/ehci-pci: add helper to create ich9 usb controllers usb/ehci-pci: add ich9 00:1a.* variant usb/ehci-pci: dynamic type generation uhci: add ich9 00:1a.* variants uhci: stick irq routing info into UHCIInfo too. uhci: dynamic type generation xilinx_zynq: add USB controllers usb/ehci: add sysbus variant usb/ehci: split into multiple source files usb/ehci: Guard definition of EHCI_DEBUG ... Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-01xhci: add port trace pointsGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-10-31Merge remote-tracking branch 'origin/master' into threadpoolPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-31aio: add generic thread-pool facilityPaolo Bonzini
Add a generic thread-pool. The code is roughly based on posix-aio-compat.c, with some changes, especially the following: - use QemuSemaphore instead of QemuCond; - separate the state of the thread from the return code of the worker function. The return code is totally opaque for the thread pool; - do not busy wait when doing cancellation. A more generic threadpool (but still specific to I/O so that in the future it can use special scheduling classes or PI mutexes) can have many uses: it allows more flexibility in raw-posix.c and can more easily be extended to Win32, and it will also be used to do an msync of the persistent bitmap. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-29Merge remote-tracking branch 'kraxel/usb.68' into stagingAnthony Liguori
* kraxel/usb.68: (36 commits) xhci: fix usb name in caps xhci: make number of interrupters and slots configurable xhci: allow disabling interrupters xhci: flush endpoint context unconditinally xhci: fix function name in error message uhci: Use only one queue for ctrl endpoints uhci: Retry to fill the queue while waiting for td completion uhci: Always mark a queue valid when we encounter it uhci: When the guest marks a pending td non-active, cancel the queue uhci: Detect guest td re-use uhci: Verify queue has not been changed by guest uhci: Immediately free queues on device disconnect uhci: Store ep in UHCIQueue uhci: Make uhci_fill_queue() actually operate on an UHCIQueue uhci: Add uhci_read_td() helper function uhci: Rename UHCIAsync->td to UHCIAsync->td_addr uhci: Move emptying of the queue's asyncs' queue to uhci_queue_free uhci: Drop unnecessary forward declaration of some static functions uhci: Don't retry on error uhci: cleanup: Add an unlink call to uhci_async_cancel() ... Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>