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* configure / meson: Move the GBM handling to meson.buildThomas Huth2021-09-061-3/+2Star
| | | | | | | | | | | | | | The GBM library detection does not need to be in the configure script, since it does not have any user-facing options (there are no --enable-gbm or --disable-gbm switches). Let's move it to meson.build instead, so we don't have to clutter config-host.mak with the related switches. Additionally, only check for GBM if it is really required, i.e. if we either compile with OpenGL or with virglrenderer support. Message-Id: <20210714085045.797168-1-thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* meson: fix missing preprocessor symbolsPaolo Bonzini2021-07-091-1/+1
| | | | | | | | | | | | | | | | | | While most libraries do not need a CONFIG_* symbol because the "when:" clauses are enough, some do. Add them back or stop using them if possible. In the case of libpmem, the statement to add the CONFIG_* symbol was still in configure, but could not be triggered because it checked for "no" instead of "disabled" (and it would be wrong anyway since the test for the library has not been done yet). Reported-by: Li Zhijian <lizhijian@cn.fujitsu.com> Fixes: 587d59d6cc ("configure, meson: convert virgl detection to meson", 2021-07-06) Fixes: 83ef16821a ("configure, meson: convert libdaxctl detection to meson", 2021-07-06) Fixes: e36e8c70f6 ("configure, meson: convert libpmem detection to meson", 2021-07-06) Fixes: 53c22b68e3 ("configure, meson: convert liburing detection to meson", 2021-07-06) Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* vhost-user-gpu: reorder free calls.Gerd Hoffmann2021-06-151-1/+1
| | | | | | | | | | | Free in correct order to avoid use-after-free. Resolves: CID 1453812 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Li Qiang <liq3ea@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20210604103714.1237414-1-kraxel@redhat.com>
* vhost-user-gpu: abstract vg_cleanup_mapping_iovLi Qiang2021-05-273-9/+26
| | | | | | | | | | | | | | Currently in vhost-user-gpu, we free resource directly in the cleanup case of resource. If we change the cleanup logic we need to change several places, also abstruct a 'vg_create_mapping_iov' can be symmetry with the 'vg_create_mapping_iov'. This is like what virtio-gpu does, no function changed. Signed-off-by: Li Qiang <liq3ea@163.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210516030403.107723-9-liq3ea@163.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: fix OOB write in 'virgl_cmd_get_capset' (CVE-2021-3546)Li Qiang2021-05-271-0/+4
| | | | | | | | | | | | | | | | | If 'virgl_cmd_get_capset' set 'max_size' to 0, the 'virgl_renderer_fill_caps' will write the data after the 'resp'. This patch avoid this by checking the returned 'max_size'. virtio-gpu fix: abd7f08b23 ("display: virtio-gpu-3d: check virgl capabilities max_size") Fixes: CVE-2021-3546 Reported-by: Li Qiang <liq3ea@163.com> Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org> Signed-off-by: Li Qiang <liq3ea@163.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210516030403.107723-8-liq3ea@163.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: fix memory leak in 'virgl_resource_attach_backing' ↵Li Qiang2021-05-271-1/+4
| | | | | | | | | | | | | | | | | (CVE-2021-3544) If 'virgl_renderer_resource_attach_iov' failed, the 'res_iovs' will be leaked. Fixes: CVE-2021-3544 Reported-by: Li Qiang <liq3ea@163.com> virtio-gpu fix: 33243031da ("virtio-gpu-3d: fix memory leak in resource attach backing") Signed-off-by: Li Qiang <liq3ea@163.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210516030403.107723-7-liq3ea@163.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: fix memory leak in 'virgl_cmd_resource_unref' (CVE-2021-3544)Li Qiang2021-05-271-0/+7
| | | | | | | | | | | | | | | | | | | | The 'res->iov' will be leaked if the guest trigger following sequences: virgl_cmd_create_resource_2d virgl_resource_attach_backing virgl_cmd_resource_unref This patch fixes this. Fixes: CVE-2021-3544 Reported-by: Li Qiang <liq3ea@163.com> virtio-gpu fix: 5e8e3c4c75 ("virtio-gpu: fix resource leak in virgl_cmd_resource_unref" Signed-off-by: Li Qiang <liq3ea@163.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210516030403.107723-6-liq3ea@163.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: fix memory leak while calling 'vg_resource_unref' ↵Li Qiang2021-05-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | (CVE-2021-3544) If the guest trigger following sequences, the attach_backing will be leaked: vg_resource_create_2d vg_resource_attach_backing vg_resource_unref This patch fix this by freeing 'res->iov' in vg_resource_destroy. Fixes: CVE-2021-3544 Reported-by: Li Qiang <liq3ea@163.com> virtio-gpu fix: 5e8e3c4c75 ("virtio-gpu: fix resource leak in virgl_cmd_resource_unref") Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org> Signed-off-by: Li Qiang <liq3ea@163.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210516030403.107723-5-liq3ea@163.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: fix memory leak in vg_resource_attach_backing (CVE-2021-3544)Li Qiang2021-05-271-0/+5
| | | | | | | | | | | | | | | Check whether the 'res' has already been attach_backing to avoid memory leak. Fixes: CVE-2021-3544 Reported-by: Li Qiang <liq3ea@163.com> virtio-gpu fix: 204f01b309 ("virtio-gpu: fix memory leak in resource attach backing") Signed-off-by: Li Qiang <liq3ea@163.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210516030403.107723-4-liq3ea@163.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: fix resource leak in 'vg_resource_create_2d' (CVE-2021-3544)Li Qiang2021-05-271-0/+1
| | | | | | | | | | | | Call 'vugbm_buffer_destroy' in error path to avoid resource leak. Fixes: CVE-2021-3544 Reported-by: Li Qiang <liq3ea@163.com> Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org> Signed-off-by: Li Qiang <liq3ea@163.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210516030403.107723-3-liq3ea@163.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: fix memory disclosure in virgl_cmd_get_capset_info ↵Li Qiang2021-05-271-0/+1
| | | | | | | | | | | | | | | | (CVE-2021-3545) Otherwise some of the 'resp' will be leaked to guest. Fixes: CVE-2021-3545 Reported-by: Li Qiang <liq3ea@163.com> virtio-gpu fix: 42a8dadc74 ("virtio-gpu: fix information leak in getting capset info dispatch") Signed-off-by: Li Qiang <liq3ea@163.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210516030403.107723-2-liq3ea@163.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: fix cursor move/updateMarc-André Lureau2021-03-261-6/+12
| | | | | | | | | | | "move" is incorrectly initialized. Fix it by using a switch statement and also treating unknown commands with a fallback. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210312100108.2706195-5-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: fix vugbm_device_init fallbackMarc-André Lureau2021-03-263-30/+22Star
| | | | | | | | | | | | | vugbm implements GBM device wrapping, udmabuf and memory fallback. However, the fallback/detection logic is flawed, as if "/dev/udmabuf" failed to be opened, it will not initialize vugbm and crash later. Rework the vugbm_device_init() logic to initialize correctly in all cases. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210312100108.2706195-4-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: glFlush before notifying clientsMarc-André Lureau2021-03-262-1/+4
| | | | | | | | | | For similar reasons as commit 3af1671852 ("spice: flush on GL update before notifying client"), vhost-user-gpu must ensure the GL state is flushed before sharing its rendering result. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210312100108.2706195-3-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: handle display-info in a callbackMarc-André Lureau2021-02-041-6/+27
| | | | | | | | | Fixes a deadlock where the backend calls QEMU, while QEMU also calls the backend simultaneously, both ends waiting for each other. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210204105232.834642-5-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: use an extandable state enum for commandsMarc-André Lureau2021-02-043-6/+12
| | | | | | | | | | Introduce a pending state for commands which aren't finished yet, but are being handled. See following patch. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20210204105232.834642-4-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* vhost-user-gpu: handle vhost-user-gpu features in a callbackMarc-André Lureau2021-02-042-11/+28
| | | | | | | | | Fixes a deadlock where the backend calls QEMU, while QEMU also calls the backend simultaneously, both ends waiting for each other. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20210204105232.834642-3-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* Clean up includesMarkus Armbruster2020-12-104-3/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes, with the changes to the following files manually reverted: contrib/libvhost-user/libvhost-user-glib.h contrib/libvhost-user/libvhost-user.c contrib/libvhost-user/libvhost-user.h contrib/plugins/hotblocks.c contrib/plugins/hotpages.c contrib/plugins/howvec.c contrib/plugins/lockstep.c linux-user/mips64/cpu_loop.c linux-user/mips64/signal.c linux-user/sparc64/cpu_loop.c linux-user/sparc64/signal.c linux-user/x86_64/cpu_loop.c linux-user/x86_64/signal.c target/s390x/gen-features.c tests/fp/platform.h tests/migration/s390x/a-b-bios.c tests/plugin/bb.c tests/plugin/empty.c tests/plugin/insn.c tests/plugin/mem.c tests/test-rcu-simpleq.c tests/test-rcu-slist.c tests/test-rcu-tailq.c tests/uefi-test-tools/UefiTestToolsPkg/BiosTablesTest/BiosTablesTest.c contrib/plugins/, tests/plugin/, and tests/test-rcu-slist.c appear not to include osdep.h intentionally. The remaining reverts are the same as in commit bbfff19688d. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201113061216.2483385-1-armbru@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Tested-by: Thomas Huth <thuth@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Alexander Bulekov <alxndr@bu.edu>
* contrib/vhost-user-gpu: avoid g_return_val_if() input validationStefan Hajnoczi2020-12-091-1/+3
| | | | | | | | | | | | | | Do not validate input with g_return_val_if(). This API is intended for checking programming errors and is compiled out with -DG_DISABLE_CHECKS. Use an explicit if statement for input validation so it cannot accidentally be compiled out. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20201118091644.199527-3-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* libvhost-user: make it a meson subprojectMarc-André Lureau2020-12-082-3/+2Star
| | | | | | | | | | | | | By making libvhost-user a subproject, check it builds standalone (without the global QEMU cflags etc). Note that the library still relies on QEMU include/qemu/atomic.h and linux_headers/. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20201125100640.366523-6-marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* meson: vhost-user-gpu/virtiofsd: use absolute pathMarc Hartmayer2020-11-031-1/+1
| | | | | | | | | | | | | The option `libexecdir` is relative to `prefix` (see https://mesonbuild.com/Builtin-options.html), so we have to be aware of this when creating 50-qemu-gpu.json and 50-qemu-virtiofsd.json. Otherwise, tools like libvirt will not be able to find the executable. Fixes: 16bf7a3326d8 ("configure: move directory options from config-host.mak to meson") Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com> Message-Id: <20201103112333.24734-1-mhartmay@linux.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* configure: move directory options from config-host.mak to mesonPaolo Bonzini2020-10-261-1/+1
| | | | | | | | | Since installation is not part of Makefiles anymore, Make need not know the directories anymore. Meson already knows them through built-in options, do everything using them instead of the config_host dictionary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* meson: use meson datadir instead of qemu_datadirMarc-André Lureau2020-09-011-1/+1
| | | | | | | | | | When cross-compiling, by default qemu_datadir is 'c:\Program Files\QEMU', which is not recognized as being an absolute path, and meson will end up adding the prefix again. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20200826110419.528931-6-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* meson: move pixman detection to mesonPaolo Bonzini2020-08-271-1/+2
| | | | | | | | | | | | | | | | | When pixman is not installed (or too old), but virglrenderer is available and "configure" has been run with "--disable-system", the build currently aborts when trying to compile vhost-user-gpu (since it requires pixman). Let's skip the build of vhost-user-gpu when pixman is not installed or too old. Instead of adding CONFIG_PIXMAN, it is simpler to move the detection to pixman. Based on a patch by Thomas Huth. <thuth@redhat.com> Fixes: 9b52b17ba5 ("configure: Allow to build tools without pixman") Reported-by: Rafael Kitover <rkitover@gmail.com> Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* contrib/vhost-user-gpu: convert to mesonMarc-André Lureau2020-08-212-10/+13
| | | | | Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* vhost-user-gpu: Release memory returned by vu_queue_pop() with free()Philippe Mathieu-Daudé2020-04-152-3/+3
| | | | | | | | | | | vu_queue_pop() returns memory that must be freed with free(). Cc: qemu-stable@nongnu.org Reported-by: Coverity (CID 1421887 ALLOC_FREE_MISMATCH) Suggested-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* build-sys: do not make qemu-ga link with pixmanMarc-André Lureau2020-03-162-3/+3
| | | | | | | | | | | | | | | | | | | | | | Since commit d52c454aadcdae74506f315ebf8b58bb79a05573 ("contrib: add vhost-user-gpu"), qemu-ga is linking with pixman. This is because the Make-based build-system use a global namespace for variables, and we rely on "main.o-libs" for different linking targets. Note: this kind of variable clashing is hard to fix or prevent currently. meson should help, as declarations have a linear dependency and doesn't rely so much on variables and clever tricks. Note2: we have a lot of main.c (or other duplicated names!) in tree. Imho, it would be annoying and a bad workaroud to rename all those to avoid conflicts like I did here. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1811670 Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20200311160923.882474-1-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* vhost-user-gpu: Drop trailing json commaCole Robinson2019-12-201-1/+1
| | | | | | | | | | | | | | Trailing comma is not valid json: $ cat contrib/vhost-user-gpu/50-qemu-gpu.json.in | jq parse error: Expected another key-value pair at line 5, column 1 Signed-off-by: Cole Robinson <crobinso@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Li Qiang <liq3ea@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 7f5dd2ac9f3504e2699f23e69bc3d8051b729832.1568925097.git.crobinso@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* core: replace getpagesize() with qemu_real_host_page_sizeWei Yang2019-10-261-1/+1
| | | | | | | | | | | | | | | | | | | | | There are three page size in qemu: real host page size host page size target page size All of them have dedicate variable to represent. For the last two, we use the same form in the whole qemu project, while for the first one we use two forms: qemu_real_host_page_size and getpagesize(). qemu_real_host_page_size is defined to be a replacement of getpagesize(), so let it serve the role. [Note] Not fully tested for some arch or device. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Message-Id: <20191013021145.16011-3-richardw.yang@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* libvhost-user: support many virtqueuesStefan Hajnoczi2019-07-041-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently libvhost-user is hardcoded to at most 8 virtqueues. The device backend should decide the number of virtqueues, not libvhost-user. This is important for multiqueue device backends where the guest driver needs an accurate number of virtqueues. This change breaks libvhost-user and libvhost-user-glib API stability. There is no stability guarantee yet, so make this change now and update all in-tree library users. This patch touches up vhost-user-blk, vhost-user-gpu, vhost-user-input, vhost-user-scsi, and vhost-user-bridge. If the device has a fixed number of queues that exact number is used. Otherwise the previous default of 8 virtqueues is used. vu_init() and vug_init() can now fail if malloc() returns NULL. I considered aborting with an error in libvhost-user but it should be safe to instantiate new vhost-user instances at runtime without risk of terminating the process. Therefore callers need to handle the vu_init() failure now. vhost-user-blk and vhost-user-scsi duplicate virtqueue index checks that are already performed by libvhost-user. This code would need to be modified to use max_queues but remove it completely instead since it's redundant. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190626074815.19994-3-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* vhost-user-gpu: initialize msghdr & iov at declarationMarc-André Lureau2019-06-161-13/+8Star
| | | | | | | | | | This should fix uninitialized fields found by coverity CID 1401762. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190605145829.7674-6-marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
* vhost-user: improve error reportMarc-André Lureau2019-06-161-1/+1
| | | | | | | | | g_printerr() needs a trailing \n Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190605145829.7674-4-marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* vhost-user: check unix_listen() return valueMarc-André Lureau2019-06-161-0/+4
| | | | | | | | | | | This check shouldn't be necessary, since &error_fatal is given as argument and will exit() on failure. However, this change should silence coverity CID 1401761 & 1401705. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190605145829.7674-3-marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* vhost-user-gpu: do not send scanout update if no GPU socketMarc-André Lureau2019-06-161-1/+1
| | | | | | | | | Should fix coverity CID 1401760. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190605145829.7674-2-marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* Clean up a header guard symbols (again)Markus Armbruster2019-06-123-6/+9
| | | | | | | | | Commit d52c454aad "contrib: add vhost-user-gpu" and "c68082c43a virtio-gpu: split virtio-gpu-pci & virtio-vga" created headers with unusual header guard symbols. Clean them up Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190607141321.9726-1-armbru@redhat.com>
* contrib: add vhost-user-gpuMarc-André Lureau2019-05-298-0/+2376
Add a vhost-user gpu backend, based on virtio-gpu/3d device. It is associated with a vhost-user-gpu device. Various TODO and nice to have items: - multi-head support - crash & resume handling - accelerated rendering/display that avoids the waiting round trips - edid support Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20190524130946.31736-6-marcandre.lureau@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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