aboutsummaryrefslogtreecommitdiff
path: root/trace-events
AgeCommit message (Collapse)Author
2015-12-03block: Don't wait serialising for non-COR read requestsFam Zheng
The assertion problem was noticed in 06c3916b35a, but it wasn't completely fixed, because even though the req is not marked as serialising, it still gets serialised by wait_serialising_requests against other serialising requests, which could lead to the same assertion failure. Fix it by even more explicitly skipping the serialising for this specific case. Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 1448962590-2842-2-git-send-email-famz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-11-17Merge remote-tracking branch 'remotes/kraxel/tags/pull-vnc-20151116-1' into ↵Peter Maydell
staging vnc: buffer code improvements, bugfixes. # gpg: Signature made Mon 16 Nov 2015 17:20:02 GMT using RSA key ID D3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" * remotes/kraxel/tags/pull-vnc-20151116-1: vnc: fix mismerge buffer: allow a buffer to shrink gracefully buffer: factor out buffer_adj_size buffer: factor out buffer_req_size vnc: recycle empty vs->output buffer vnc: fix local state init vnc: only alloc server surface with clients connected vnc: use vnc_{width,height} in vnc_set_area_dirty vnc: factor out vnc_update_server_surface vnc: add vnc_width+vnc_height helpers vnc: zap dead code vnc-jobs: move buffer reset, use new buffer move vnc: kill jobs queue buffer vnc: attach names to buffers buffer: add tracing buffer: add buffer_shrink buffer: add buffer_move buffer: add buffer_move_empty buffer: add buffer_init buffer: make the Buffer capacity increase in powers of two Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-11-10End of migration for postcopyDr. David Alan Gilbert
Tweak the end of migration cleanup; we don't want to close stuff down at the end of the main stream, since the postcopy is still sending pages on the other thread. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Postcopy: Mark nohugepage before discardDr. David Alan Gilbert
Prior to servicing userfault requests we must ensure we've not got huge pages in the area that might include non-transferred memory, since a hugepage could incorrectly mark the whole huge page as present. We mark the area as non-huge page (nhp) just before we perform discards; the discard code now tells us to discard any areas that haven't been sent (as well as any that are redirtied); any already formed transparent-huge-pages get fragmented by this discard process if they cotnain any discards. Transparent huge pages that have been entirely transferred and don't contain any discards are not broken by this mechanism; they stay as huge pages. By starting postcopy after a full precopy pass, many of the pages then stay as huge pages; this is important for maintaining performance after the end of the migration. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10postcopy: Wire up loadvm_postcopy_handle_ commandsDr. David Alan Gilbert
Wire up more of the handlers for the commands on the destination side, in particular loadvm_postcopy_handle_run now has enough to start the guest running. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Start up a postcopy/listener thread ready for incoming page dataDr. David Alan Gilbert
The loading of a device state (during postcopy) may access guest memory that's still on the source machine and thus might need a page fill; split off a separate thread that handles the incoming page data so that the original incoming migration code can finish off the device data. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Postcopy; Handle userfault requestsDr. David Alan Gilbert
userfaultfd is a Linux syscall that gives an fd that receives a stream of notifications of accesses to pages registered with it and allows the program to acknowledge those stalls and tell the accessing thread to carry on. We convert the requests from the kernel into messages back to the source asking for the pages. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Postcopy: Use helpers to map pages during migrationDr. David Alan Gilbert
In postcopy, the destination guest is running at the same time as it's receiving pages; as we receive new pages we must put them into the guests address space atomically to avoid a running CPU accessing a partially written page. Use the helpers in postcopy-ram.c to map these pages. qemu_get_buffer_in_place is used to avoid a copy out of qemu_file in the case that postcopy is going to do a copy anyway. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10postcopy_ram.c: place_page and helpersDr. David Alan Gilbert
postcopy_place_page (etc) provide a way for postcopy to place a page into guests memory atomically (using the copy ioctl on the ufd). Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Page request: Consume pages off the post-copy queueDr. David Alan Gilbert
When transmitting RAM pages, consume pages that have been queued by MIG_RPCOMM_REQPAGE commands and send them ahead of normal page scanning. Note: a) After a queued page the linear walk carries on from after the unqueued page; there is a reasonable chance that the destination was about to ask for other closeby pages anyway. b) We have to be careful of any assumptions that the page walking code makes, in particular it does some short cuts on its first linear walk that break as soon as we do a queued page. c) We have to be careful to not break up host-page size chunks, since this makes it harder to place the pages on the destination. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Page request: Process incoming page requestDr. David Alan Gilbert
On receiving MIG_RPCOMM_REQ_PAGES look up the address and queue the page. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Page request: Add MIG_RP_MSG_REQ_PAGES reverse commandDr. David Alan Gilbert
Add MIG_RP_MSG_REQ_PAGES command on Return path for the postcopy destination to request a page from the source. Two versions exist: MIG_RP_MSG_REQ_PAGES_ID that includes a RAMBlock name and start/len MIG_RP_MSG_REQ_PAGES that just has start/len for use with the same RAMBlock as a previous MIG_RP_MSG_REQ_PAGES_ID Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Postcopy: End of iterationDr. David Alan Gilbert
The end of migration in postcopy is a bit different since some of the things normally done at the end of migration have already been done on the transition to postcopy. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Postcopy: Postcopy startup in migration threadDr. David Alan Gilbert
Rework the migration thread to setup and start postcopy. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10postcopy: Incoming initialisationDr. David Alan Gilbert
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10migration_completion: Take current stateDr. David Alan Gilbert
Soon we'll be in either ACTIVE or POSTCOPY_ACTIVE when we complete migration, and we need to know which we expect to be in to change state safely. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10MIGRATION_STATUS_POSTCOPY_ACTIVE: Add new migration stateDr. David Alan Gilbert
'MIGRATION_STATUS_POSTCOPY_ACTIVE' is entered after migrate_start_postcopy 'migration_in_postcopy' is provided for other sections to know if they're in postcopy. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Modify save_live_pending for postcopyDr. David Alan Gilbert
Modify save_live_pending to return separate postcopiable and non-postcopiable counts. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10MIG_CMD_PACKAGED: Send a packaged chunk of migration streamDr. David Alan Gilbert
MIG_CMD_PACKAGED is a migration command that wraps a chunk of migration stream inside a package whose length can be determined purely by reading its header. The destination guarantees that the whole MIG_CMD_PACKAGED is read off the stream prior to parsing the contents. This is used by postcopy to load device state (from the package) while leaving the main stream free to receive memory pages. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Add wrappers and handlers for sending/receiving the postcopy-ram migration ↵Dr. David Alan Gilbert
messages. The state of the postcopy process is managed via a series of messages; * Add wrappers and handlers for sending/receiving these messages * Add state variable that track the current state of postcopy Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Rework loadvm path for subloopsDr. David Alan Gilbert
Postcopy needs to have two migration streams loading concurrently; one from memory (with the device state) and the other from the fd with the memory transactions. Split the core of qemu_loadvm_state out so we can use it for both. Allow the inner loadvm loop to quit and cause the parent loops to exit as well. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Return path: Source handling of return pathDr. David Alan Gilbert
Open a return path, and handle messages that are received upon it. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Return path: Send responses from destination to sourceDr. David Alan Gilbert
Add migrate_send_rp_message to send a message from destination to source along the return path. (It uses a mutex to let it be called from multiple threads) Add migrate_send_rp_shut to send a 'shut' message to indicate the destination is finished with the RP. Add migrate_send_rp_ack to send a 'PONG' message in response to a PING Use it in the MSG_RP_PING handler Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Return path: Control commandsDr. David Alan Gilbert
Add two src->dest commands: * OPEN_RETURN_PATH - To request that the destination open the return path * PING - Request an acknowledge from the destination Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Migration commandsDr. David Alan Gilbert
Create QEMU_VM_COMMAND section type for sending commands from source to destination. These commands are not intended to convey guest state but to control the migration process. For use in postcopy. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-10Rename save_live_complete to save_live_complete_precopyDr. David Alan Gilbert
In postcopy we're going to need to perform the complete phase for postcopiable devices at a different point, start out by renaming all of the 'complete's to make the difference obvious. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-11-05Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* Guest ABI fixes for PC machines (hw_version) * Fixes for recent Perl * John Snow's configure fixes * file-backed RAM improvements (Igor, Pavel) * -Werror=clobbered fixes (Stefan) * Kill -d ioport * Fix qemu-system-s390x * Performance improvement for kvmclock migration # gpg: Signature made Thu 05 Nov 2015 13:42:27 GMT using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: iscsi: Translate scsi sense into error code Revert "Introduce cpu_clean_all_dirty" kvmclock: add a new function to update env->tsc. configure: disable FORTIFY_SOURCE under clang backends/hostmem-file: Allow to specify full pathname for backing file configure: disallow ccache during compile tests cpu-exec: Fix compiler warning (-Werror=clobbered) memory: call begin, log_start and commit when registering a new listener megasas: Use qemu_hw_version() instead of QEMU_VERSION osdep: Rename qemu_{get, set}_version() to qemu_{, set_}hw_version() pc: Set hw_version on all machine classes qemu-log: remove -d ioport ioport: do not use CPU_LOG_IOPORT target-i386: fix pcmpxstrx equal-ordered (strstr) mode scripts/text2pod.pl: Escape left brace file_ram_alloc: propagate error to caller instead of terminating QEMU Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-11-05buffer: add tracingGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1446203414-4013-7-git-send-email-kraxel@redhat.com
2015-11-04ioport: do not use CPU_LOG_IOPORTPaolo Bonzini
These messages are disabled by default; a perfect usecase for tracepoints, which in fact already exist. Add the missing information to them and stop using qemu_log_mask. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-11-04migration: rename qemu_savevm_state_cancelLiang Li
The function qemu_savevm_state_cancel is called after the migration in migration_thread, it seems strange to 'cancel' it after completion, rename it to qemu_savevm_state_cleanup looks better. Signed-off-by: Liang Li <liang.z.li@intel.com> Reviewed-by: Juan Quintela <quintela@redhat.com>al3 Reviewed-by: Amit Shah <amit.shah@redhat.com>al3 Signed-off-by: Juan Quintela <quintela@redhat.com>al3
2015-10-29monitor: Simplify event throttlingMarkus Armbruster
The event throttling state machine is hard to understand. I'm not sure it's entirely correct. Rewrite it in a more straightforward manner: State 1: No event sent recently (less than evconf->rate ns ago) Invariant: evstate->timer is not pending, evstate->qdict is null On event: send event, arm timer, goto state 2 State 2: Event sent recently, no additional event being delayed Invariant: evstate->timer is pending, evstate->qdict is null On event: store it in evstate->qdict, goto state 3 On timer: goto state 1 State 3: Event sent recently, additional event being delayed Invariant: evstate->timer is pending, evstate->qdict is non-null On event: store it in evstate->qdict, goto state 3 On timer: send evstate->qdict, clear evstate->qdict, arm timer, goto state 2 Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1444921716-9511-3-git-send-email-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-10-23prep: do not use CPU_LOG_IOPORT, convert to tracepointsPaolo Bonzini
These messages are disabled by default; a perfect usecase for tracepoints. Convert them over. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2015-10-22net: add trace_vhost_user_eventMarc-André Lureau
Replace error_report() and use tracing instead. It's not an error to get a connection or a disconnection, so silence this and trace it instead. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
2015-10-09Merge remote-tracking branch 'remotes/kraxel/tags/pull-virgl-20151008-1' ↵Peter Maydell
into staging virtio-gpu: add 3d rendering support using virgl, misc fixes. ui/gtk: add opengl context and scanout support (for virtio-gpu). # gpg: Signature made Thu 08 Oct 2015 10:35:39 BST using RSA key ID D3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" * remotes/kraxel/tags/pull-virgl-20151008-1: gtk/opengl: add opengl context and scanout support (GtkGLArea) gtk/opengl: add opengl context and scanout support (egl) opengl: add egl-context.[ch] helpers virtio-gpu: add cursor update tracepoint virtio-gpu: add 3d mode and virgl rendering support. virtio-gpu: update headers for virgl/3d virtio-gpu: change licence from GPLv2 to GPLv2+ virtio-gpu: move iov free to virtio_gpu_cleanup_mapping_iov ui/console: add opengl context and scanout support interfaces. sdl2: stop flickering shaders: initialize vertexes once Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-10-09trace: remove malloc tracingPaolo Bonzini
The malloc vtable is not supported anymore in glib, because it broke when constructors called g_malloc. Remove tracing of g_malloc, g_realloc and g_free calls. Note that, for systemtap users, glib also provides tracepoints glib.mem_alloc, glib.mem_free, glib.mem_realloc, glib.slice_alloc and glib.slice_free. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-id: 1442417924-25831-1-git-send-email-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-10-08virtio-gpu: add cursor update tracepointGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2015-10-08virtio-gpu: add 3d mode and virgl rendering support.Gerd Hoffmann
Add virglrenderer library detection. Add 3d mode to virtio-gpu, wire up virglrenderer library. When in 3d mode render using the new context management and texture scanout callbacks. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-10-05hw/vfio/platform: do not set resamplefd for edge-sensitive IRQSEric Auger
In irqfd mode, current code attempts to set a resamplefd whatever the type of the IRQ. For an edge-sensitive IRQ this attempt fails and as a consequence, the whole irqfd setup fails and we fall back to the slow mode. This patch bypasses the resamplefd setting for non level-sentive IRQs. Signed-off-by: Eric Auger <eric.auger@linaro.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-09-29migration: size_t'ify some of qemu-fileDr. David Alan Gilbert
This is a start on using size_t more in qemu-file and friends; it fixes up QEMUFilePutBufferFunc and QEMUFileGetBufferFunc to take size_t lengths and return ssize_t return values (like read(2)) and fixes up all the different implementations of them. Note that I've not yet followed this deeply into bdrv_ implementations. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <1439463094-5394-5-git-send-email-dgilbert@redhat.com> Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2015-09-29Split out end of migration code from migration_threadDr. David Alan Gilbert
The code that gets run at the end of the migration process is getting large, and I'm about to add more for postcopy. Split it into a separate function. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <1439463094-5394-3-git-send-email-dgilbert@redhat.com> Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
2015-09-25block: Introduce a new API bdrv_co_no_copy_on_readv()Wen Congyang
In some cases, we need to disable copy-on-read, and just read the data. Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Message-id: 1441682913-14320-2-git-send-email-wency@cn.fujitsu.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2015-09-23vfio/pci: Add emulated PCI IDsAlex Williamson
Specifying an emulated PCI vendor/device ID can be useful for testing various quirk paths, even though the behavior and functionality of the device with bogus IDs is fully unsupportable. We need to use a uint32_t for the vendor/device IDs, even though the registers themselves are only 16-bit in order to be able to determine whether the value is valid and user set. The same support is added for subsystem vendor/device ID, though these have the possibility of being useful and supported for more than a testing tool. An emulated platform might want to impose their own subsystem IDs or at least hide the physical subsystem ID. Windows guests will often reinstall drivers due to a change in subsystem IDs, something that VM users may want to avoid. Of course careful attention would be required to ensure that guest drivers do not rely on the subsystem ID as a basis for device driver quirks. All of these options are added using the standard experimental option prefix and should not be considered stable. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-09-23vfio/pci: Move AMD device specific reset to quirksAlex Williamson
This is just another quirk, for reset rather than affecting memory regions. Move it to our new quirks file. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-09-23vfio/pci: Remove old config window and mirror quirksAlex Williamson
These are now unused. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-09-23vfio/pci: Config mirror quirkAlex Williamson
Re-implement our mirror quirk using the new infrastructure. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-09-23vfio/pci: Config window quirksAlex Williamson
Config windows make use of an address register and a data register. In VGA cards, these are often used to provide real mode code in the BIOS an easy way to access MMIO registers since the window often resides in an I/O port register. When the MMIO register has a mirror of PCI config space, we need to trap those accesses and redirect them to emulated config space. The previous version of this functionality made use of a single MemoryRegion and single match address. This version uses separate MemoryRegions for each of the address and data registers and allows for multiple match addresses. This is useful for Nvidia cards which have two ranges which index into PCI config space. The previous implementation is left for the follow-on patch for a more reviewable diff. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-09-23vfio/pci: Rework RTL8168 quirkAlex Williamson
Another rework of this quirk, this time to update to the new quirk structure. We can handle the address and data registers with separate MemoryRegions and a quirk specific data structure, making the code much more understandable. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-09-23vfio/pci: Cleanup Nvidia 0x3d0 quirkAlex Williamson
The Nvidia 0x3d0 quirk makes use of a two separate registers and gives us our first chance to make use of separate memory regions for each to simplify the code a bit. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-09-23vfio/pci: Cleanup ATI 0x3c3 quirkAlex Williamson
This is an easy quirk that really doesn't need a data structure if its own. We can pass vdev as the opaque data and access to the MemoryRegion isn't required. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2015-09-23vfio/pci: Cleanup ROM blacklist quirkAlex Williamson
Create a vendor:device ID helper that we'll also use as we rework the rest of the quirks. Re-reading the config entries, even if we get more blacklist entries, is trivial overhead and only incurred during device setup. There's no need to typedef the blacklist structure, it's a static private data type used once. The elements get bumped up to uint32_t to avoid future maintenance issues if PCI_ANY_ID gets used for a blacklist entry (avoiding an actual hardware match). Our test loop is also crying out to be simplified as a for loop. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>