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2017-05-09qobject: Use simpler QDict/QList scalar insertion macrosEric Blake
We now have macros in place to make it less verbose to add a scalar to QDict and QList, so use them. Patch created mechanically via: spatch --sp-file scripts/coccinelle/qobject.cocci \ --macro-file scripts/cocci-macro-file.h --dir . --in-place then touched up manually to fix a couple of '?:' back to original spacing, as well as avoiding a long line in monitor.c. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20170427215821.19397-7-eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-05-08pci: Reduce scope of error injectionEric Blake
No one outside of pcie_aer.h was using error injection; mark them static for internal use. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20170427215821.19397-3-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-05-08pci: Use struct instead of QDict to pass back parametersEric Blake
It's simpler to just use a C struct than it is to bundle things into a QDict in one function just to pull them back out in the caller. Plus, doing this gets rid of one more user of dynamic JSON through qobject_from_jsonf(), as well as a memory leak of the QDict. While cleaning the code, fix things to report all errors (the code was previously silently ignoring a failure of pcie_aer_inject_error(), at a distance). Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20170427215821.19397-2-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-05-05Merge remote-tracking branch 'elmarco/tags/chr-tests-pull-request' into stagingStefan Hajnoczi
# gpg: Signature made Thu 04 May 2017 12:42:10 PM BST # gpg: using RSA key 0xDAE8E10975969CE5 # gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" # gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>" # Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5 * elmarco/tags/chr-tests-pull-request: (21 commits) tests: add /char/console test tests: add /char/udp test tests: add /char/socket test tests: add /char/file test tests: add /char/pipe test tests: add alias check in /char/ringbuf char-udp: flush as much buffer as possible char-socket: add 'connected' property char-socket: add 'addr' property char-socket: update local address after listen char-socket: introduce update_disconnected_filename() char: useless NULL check char: remove chardevs list char: remove qemu_chardev_add char: use /chardevs container instead of chardevs list vl: add todo note about root container cleanup char: add a /chardevs container container: don't leak container reference xen: use a better chardev type check mux: simplfy muxes_realize_done ... Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-05Merge remote-tracking branch 'cohuck/tags/s390x-3270-20170504' into stagingStefan Hajnoczi
Basic support for using channel-attached 3270 'green-screen' devices via tn3270. Actual handling of the data stream is delegated to x3270; more info at http://wiki.qemu.org/Features/3270 # gpg: Signature made Thu 04 May 2017 11:36:51 AM BST # gpg: using RSA key 0xDECF6B93C6F02FAF # gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>" # gpg: aka "Cornelia Huck <cohuck@kernel.org>" # gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>" # gpg: aka "Cornelia Huck <huckc@linux.vnet.ibm.com>" # Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0 18CE DECF 6B93 C6F0 2FAF * cohuck/tags/s390x-3270-20170504: s390x/3270: Mark non-migratable and enable the device s390x/3270: Detect for continued presence of a 3270 client s390x/3270: Add the TCP socket events handler for 3270 s390x/3270: 3270 data stream handling s390x/3270: Add emulated terminal3270 device s390x/3270: Add abstract emulated ccw-attached 3270 device s390x/css: Add an algorithm to find a free chpid chardev: Basic support for TN3270 Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-05Merge remote-tracking branch 'kraxel/tags/pull-audio-20170504-1' into stagingStefan Hajnoczi
audio: cleanups, bugfixes (memory leaks). # gpg: Signature made Thu 04 May 2017 08:16:50 AM BST # gpg: using RSA key 0x4CB6D8EED3E87138 # 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>" # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * kraxel/tags/pull-audio-20170504-1: (30 commits) audio: Use ARRAY_SIZE from qemu/osdep.h audio: un-export OPLResetChip audio: Remove unused typedefs audio: UpdateHandler is not used anymore audio: IRQHandler is not used anymore audio: OPLSetUpdateHandler is not used anywhere audio: OPLSetIRQHandler is not used anywhere audio: GUSsample is int16_t audio: GUSword is uint16_t audio: GUSword is uint16_t audio: remove GUSchar audio: GUSbyte is uint8_t audio: Remove unused fields audio: Remove type field audio: Remove Unused OPL_TYPE_* audio: Unfold OPLSAMPLE audio: Remove INT32 audio: remove INT16 audio: Remove INT8 audio: remove UINT32 ... Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-05Merge remote-tracking branch 'kraxel/tags/pull-input-20170504-1' into stagingStefan Hajnoczi
input: limit kbd queue depth input: don't queue delay if paused input: Add trace event for empty keyboard queue # gpg: Signature made Thu 04 May 2017 06:48:37 AM BST # gpg: using RSA key 0x4CB6D8EED3E87138 # 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>" # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * kraxel/tags/pull-input-20170504-1: input: Add trace event for empty keyboard queue input: don't queue delay if paused input: limit kbd queue depth Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-05Merge remote-tracking branch 'shorne/tags/pull-or-20170504' into stagingStefan Hajnoczi
Openrisc Features and Fixes for qemu 2.10 # gpg: Signature made Thu 04 May 2017 01:41:45 AM BST # gpg: using RSA key 0xC3B31C2D5E6627E4 # gpg: Good signature from "Stafford Horne <shorne@gmail.com>" # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: D9C4 7354 AEF8 6C10 3A25 EFF1 C3B3 1C2D 5E66 27E4 * shorne/tags/pull-or-20170504: target/openrisc: Support non-busy idle state using PMR SPR target/openrisc: Remove duplicate features property target/openrisc: Implement full vmstate serialization migration: Add VMSTATE_STRUCT_2DARRAY() target/openrisc: implement shadow registers migration: Add VMSTATE_UINTTL_2DARRAY() target/openrisc: add numcores and coreid support target/openrisc: Fixes for memory debugging target/openrisc: Implement EPH bit target/openrisc: Implement EVBAR register MAINTAINERS: Add myself as openrisc maintainer Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-05Merge remote-tracking branch 'awilliam/tags/vfio-updates-20170503.0' into ↵Stefan Hajnoczi
staging VFIO fixes 2017-05-03 - Enable 8-byte memory region accesses (Jose Ricardo Ziviani) - Fix vfio-pci error message (Dong Jia Shi) # gpg: Signature made Wed 03 May 2017 10:28:55 PM BST # gpg: using RSA key 0x239B9B6E3BB08B22 # gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>" # gpg: aka "Alex Williamson <alex@shazbot.org>" # gpg: aka "Alex Williamson <alwillia@redhat.com>" # gpg: aka "Alex Williamson <alex.l.williamson@gmail.com>" # Primary key fingerprint: 42F6 C04E 540B D1A9 9E7B 8A90 239B 9B6E 3BB0 8B22 * awilliam/tags/vfio-updates-20170503.0: vfio/pci: Fix incorrect error message vfio: enable 8-byte reads/writes to vfio vfio: Set MemoryRegionOps:max_access_size and min_access_size Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-04char: add a /chardevs containerMarc-André Lureau
Add a /chardevs container object to hold the list of chardevs. (Note: QTAILQ chardevs is going away in the following commits) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-05-04xen: use a better chardev type checkMarc-André Lureau
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-05-04s390x/3270: Mark non-migratable and enable the deviceJing Liu
Mark 3270 as non-migratable for the experimental stage. Enable the 3270 device so that we can use x3270 client to operate the guest. Run qemu with the arguments: -chardev socket,id=char3270_0,host=0.0.0.0,port=23,nowait,server,tn3270 \ -device x-terminal3270,chardev=char3270_0,devno=fe.0.000a,id=terminal3270_0 \ There are some restrictions for the first stage: We don't support SSL connections, multiple client connections and client resizing. Only tested with the x3270 client. Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Signed-off-by: Yang Chen <bjcyang@linux.vnet.ibm.com> Reviewed-by: QingFeng Hao <haoqf@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-04s390x/3270: Detect for continued presence of a 3270 clientJing Liu
To ensure that we do not keep any 3270 sockets where the client is not connected anymore, we send a packet with the timing mark option after ten minutes of client inactivity. If the client does not answer it, then the socket will be closed automatically. This helps to ensure that there is no half-open situation on the 3270 socket. Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: QingFeng Hao <haoqf@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-04s390x/3270: Add the TCP socket events handler for 3270Jing Liu
This introduces a chr_event handler to handle the 3270 connection and disconnection events. Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: QingFeng Hao <haoqf@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-04s390x/3270: 3270 data stream handlingJing Liu
This introduces the input and output handlers for 3270 device, setting up the data tunnel among guest kernel, qemu and the 3270 client. After the client connected and TN3270 handshake done, signal the not-ready to ready status by an unsolicited device-end interrupt, and then the 3270 data stream could be handled correctly between the channel and socket. Multiple commands generated by "Reset" key on x3270 are not supported now, just simply terminate the connection. Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Signed-off-by: Yang Chen <bjcyang@linux.vnet.ibm.com> Reviewed-by: QingFeng Hao <haoqf@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-04s390x/3270: Add emulated terminal3270 deviceYang Chen
This is a basic implementation of the emulated ccw-attached 3270 called x-terminal3270, which provides visibility of the device in the qemu monitor and guest. The x prefix indicates that this is just an experimental implementation for the current stage. This device will not be compiled until the basic functions are available. Signed-off-by: Yang Chen <bjcyang@linux.vnet.ibm.com> Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: QingFeng Hao <haoqf@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-04s390x/3270: Add abstract emulated ccw-attached 3270 deviceYang Chen
This introduces the infrastructure for the emulated 3270 devices, which will be attached to the virtual-css-bus. Signed-off-by: Yang Chen <bjcyang@linux.vnet.ibm.com> Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: QingFeng Hao <haoqf@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-04s390x/css: Add an algorithm to find a free chpidJing Liu
This introduces a function named css_find_free_chpid() to find a free channel path. Because virtio-ccw device used zero as its channel path number, it would be sensible to skip the reserved one and search upwards. Signed-off-by: Jing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: QingFeng Hao <haoqf@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-04audio: Use ARRAY_SIZE from qemu/osdep.hJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20170425223739.6703-27-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: un-export OPLResetChipJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20170425223739.6703-26-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: Remove unused typedefsJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-25-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: UpdateHandler is not used anymoreJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-24-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: IRQHandler is not used anymoreJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-23-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: OPLSetUpdateHandler is not used anywhereJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-22-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: OPLSetIRQHandler is not used anywhereJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-21-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: GUSsample is int16_tJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-20-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: GUSword is uint16_tJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-19-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: GUSword is uint16_tJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-18-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: remove GUScharJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-17-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: GUSbyte is uint8_tJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-16-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: Remove unused fieldsJuan Quintela
These were used for the remove stuff. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-15-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: Remove type fieldJuan Quintela
It was not used anymore as now there is only one type of devices. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-14-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: Remove Unused OPL_TYPE_*Juan Quintela
Since we removed the previous unused devices, they are not used anymore. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-13-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: Unfold OPLSAMPLEJuan Quintela
It was used only once, and now it was always int16_t. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-12-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: Remove INT32Juan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-11-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: remove INT16Juan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-10-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: Remove INT8Juan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-9-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: remove UINT32Juan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-8-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: remove UINT16Juan Quintela
More modernitation. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-7-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: Remove UINT8Juan Quintela
uint8_t has existed since ..... all this century? Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-6-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: YM3812 was always definedJuan Quintela
So, remove the ifdefs. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-5-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: Remove YM3526 supportJuan Quintela
It was never compiled in. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-4-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04audio: remove Y8950 configurationJuan Quintela
Include file has never been on qemu and it has been undefined from the very beginning. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-3-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04adlib: Remove support for YMF262Juan Quintela
Notice that the code was supposed to be in the file ymf262.h, that has never been on qemu source tree. Signed-off-by: Juan Quintela <quintela@redhat.com> Message-id: 20170425223739.6703-2-quintela@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04hw/audio: convert exit callback in HDACodecDeviceClass to voidZihan Yang
The exit callback always return 0, convert it to void Signed-off-by: Zihan Yang <tgnyang@gmail.com> Message-id: 1493211188-24086-5-git-send-email-tgnyang@gmail.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04hw/audio: replace exit with unrealize in hda_codec_device_class_initZihan Yang
The exit callback of DeviceClass will be removed in the future, so convert to unrealize in the init functioin Signed-off-by: Zihan Yang <tgnyang@gmail.com> Message-id: 1493211188-24086-4-git-send-email-tgnyang@gmail.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-04target/openrisc: Support non-busy idle state using PMR SPRStafford Horne
The OpenRISC architecture has the Power Management Register (PMR) special purpose register to manage cpu power states. The interesting modes are: * Doze Mode (DME) - Stop cpu except timer & pic - wake on interrupt * Sleep Mode (SME) - Stop cpu and all units - wake on interrupt * Suspend Model (SUME) - Stop cpu and all units - wake on reset The linux kernel will set DME when idle. This patch implements the PMR SPR and halts the qemu cpu when there is a change to DME or SME. This means that openrisc qemu in no longer peggs a host cpu at 100%. In order for this to work we need to kick the CPU when timers are expired. Update the cpu timer to kick the cpu upon each timer event. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Stafford Horne <shorne@gmail.com>
2017-05-03vfio/pci: Fix incorrect error messageDong Jia Shi
When the "No host device provided" error occurs, the hint message that starts with "Use -vfio-pci," makes no sense, since "-vfio-pci" is not a valid command line parameter. Correct this by replacing "-vfio-pci" with "-device vfio-pci". Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2017-05-03vfio: enable 8-byte reads/writes to vfioJose Ricardo Ziviani
This patch enables 8-byte writes and reads to VFIO. Such implemention is already done but it's missing the 'case' to handle such accesses in both vfio_region_write and vfio_region_read and the MemoryRegionOps: impl.max_access_size and impl.min_access_size. After this patch, 8-byte writes such as: qemu_mutex_lock locked mutex 0x10905ad8 vfio_region_write (0001:03:00.0:region1+0xc0, 0x4140c, 4) vfio_region_write (0001:03:00.0:region1+0xc4, 0xa0000, 4) qemu_mutex_unlock unlocked mutex 0x10905ad8 goes like this: qemu_mutex_lock locked mutex 0x10905ad8 vfio_region_write (0001:03:00.0:region1+0xc0, 0xbfd0008, 8) qemu_mutex_unlock unlocked mutex 0x10905ad8 Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2017-05-03vfio: Set MemoryRegionOps:max_access_size and min_access_sizeJose Ricardo Ziviani
Sets valid.max_access_size and valid.min_access_size to ensure safe 8-byte accesses to vfio. Today, 8-byte accesses are broken into pairs of 4-byte calls that goes unprotected: qemu_mutex_lock locked mutex 0x10905ad8 vfio_region_write (0001:03:00.0:region1+0xc0, 0x2020c, 4) qemu_mutex_unlock unlocked mutex 0x10905ad8 qemu_mutex_lock locked mutex 0x10905ad8 vfio_region_write (0001:03:00.0:region1+0xc4, 0xa0000, 4) qemu_mutex_unlock unlocked mutex 0x10905ad8 which occasionally leads to: qemu_mutex_lock locked mutex 0x10905ad8 vfio_region_write (0001:03:00.0:region1+0xc0, 0x2030c, 4) qemu_mutex_unlock unlocked mutex 0x10905ad8 qemu_mutex_lock locked mutex 0x10905ad8 vfio_region_write (0001:03:00.0:region1+0xc0, 0x1000c, 4) qemu_mutex_unlock unlocked mutex 0x10905ad8 qemu_mutex_lock locked mutex 0x10905ad8 vfio_region_write (0001:03:00.0:region1+0xc4, 0xb0000, 4) qemu_mutex_unlock unlocked mutex 0x10905ad8 qemu_mutex_lock locked mutex 0x10905ad8 vfio_region_write (0001:03:00.0:region1+0xc4, 0xa0000, 4) qemu_mutex_unlock unlocked mutex 0x10905ad8 causing strange errors in guest OS. With this patch, such accesses are protected by the same lock guard: qemu_mutex_lock locked mutex 0x10905ad8 vfio_region_write (0001:03:00.0:region1+0xc0, 0x2000c, 4) vfio_region_write (0001:03:00.0:region1+0xc4, 0xb0000, 4) qemu_mutex_unlock unlocked mutex 0x10905ad8 This happens because the 8-byte write should be broken into 4-byte writes by memory.c:access_with_adjusted_size() in order to be under the same lock. Today, it's done in exec.c:address_space_write_continue() which was able to handle only 4 bytes due to a zero'ed valid.max_access_size (see exec.c:memory_access_size()). Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>