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2020-07-10qemu-option: Use returned bool to check for failureMarkus Armbruster1-2/+2
The previous commit enables conversion of foo(..., &err); if (err) { ... } to if (!foo(..., &err)) { ... } for QemuOpts functions that now return true / false on success / error. Coccinelle script: @@ identifier fun = { opts_do_parse, parse_option_bool, parse_option_number, parse_option_size, qemu_opt_parse, qemu_opt_rename, qemu_opt_set, qemu_opt_set_bool, qemu_opt_set_number, qemu_opts_absorb_qdict, qemu_opts_do_parse, qemu_opts_from_qdict_entry, qemu_opts_set, qemu_opts_validate }; expression list args, args2; typedef Error; Error *err; @@ - fun(args, &err, args2); - if (err) + if (!fun(args, &err, args2)) { ... } A few line breaks tidied up manually. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20200707160613.848843-15-armbru@redhat.com> [Conflict with commit 0b6786a9c1 "block/amend: refactor qcow2 amend options" resolved by rerunning Coccinelle on master's version]
2020-06-12libvhost-user: advertise vring featuresStefan Hajnoczi2-3/+11
libvhost-user implements several vring features without advertising them. There is no way for the vhost-user master to detect support for these features. Things more or less work today because QEMU assumes the vhost-user backend always implements certain feature bits like VIRTIO_RING_F_EVENT_IDX. This is not documented anywhere. This patch explicitly advertises features implemented in libvhost-user so that the vhost-user master does not need to make undocumented assumptions. Feature bits that libvhost-user now advertises can be removed from vhost-user-blk.c. Devices should not be responsible for advertising vring feature bits, that is libvhost-user's job. Cc: Marc-André Lureau <marcandre.lureau@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20200529161338.456017-1-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2020-06-12Lift max ram slots limit in libvhost-userRaphael Norwitz2-12/+20
Historically, VMs with vhost-user devices could hot-add memory a maximum of 8 times. Now that the VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS protocol feature has been added, VMs with vhost-user backends which support this new feature can support a configurable number of ram slots up to the maximum supported by the target platform. This change adds VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS support for backends built with libvhost-user, and increases the number of supported ram slots from 8 to 32. Memory hot-add, hot-remove and postcopy migration were tested with the vhost-user-bridge sample. Signed-off-by: Raphael Norwitz <raphael.norwitz@nutanix.com> Message-Id: <1588533678-23450-11-git-send-email-raphael.norwitz@nutanix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-12Support individual region unmap in libvhost-userRaphael Norwitz2-0/+64
When the VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS protocol feature is enabled, on memory hot-unplug qemu will transmit memory regions to remove individually using the new message VHOST_USER_REM_MEM_REG message. With this change, vhost-user backends build with libvhost-user can now unmap individual memory regions when receiving the VHOST_USER_REM_MEM_REG message. Qemu only sends VHOST_USER_REM_MEM_REG messages when the VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS feature is negotiated, and support for that feature has not yet been added in libvhost-user, this new functionality is not yet used. Signed-off-by: Raphael Norwitz <raphael.norwitz@nutanix.com> Message-Id: <1588533678-23450-10-git-send-email-raphael.norwitz@nutanix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-12Support adding individual regions in libvhost-userRaphael Norwitz2-0/+110
When the VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS is enabled, qemu will transmit memory regions to a backend individually using the new message VHOST_USER_ADD_MEM_REG. With this change vhost-user backends built with libvhost-user can now map in new memory regions when VHOST_USER_ADD_MEM_REG messages are received. Qemu only sends VHOST_USER_ADD_MEM_REG messages when the VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS feature is negotiated, and since it is not yet supported in libvhost-user, this new functionality is not yet used. Signed-off-by: Raphael Norwitz <raphael.norwitz@nutanix.com> Message-Id: <1588533678-23450-9-git-send-email-raphael.norwitz@nutanix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-12Support ram slot configuration in libvhost-userRaphael Norwitz2-0/+20
The VHOST_USER_GET_MAX_MEM_SLOTS message allows a vhost-user backend to specify a maximum number of ram slots it is willing to support. This change adds support for libvhost-user to process this message. For now the backend will reply with 8 as the maximum number of regions supported. libvhost-user does not yet support the vhost-user protocol feature VHOST_USER_PROTOCOL_F_CONFIGIRE_MEM_SLOTS, so qemu should never send the VHOST_USER_GET_MAX_MEM_SLOTS message. Therefore this new functionality is not currently used. Signed-off-by: Raphael Norwitz <raphael.norwitz@nutanix.com> Message-Id: <1588533678-23450-8-git-send-email-raphael.norwitz@nutanix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2020-06-12Refactor out libvhost-user fault generation logicRaphael Norwitz1-68/+79
In libvhost-user, the incoming postcopy migration path for setting the backend's memory tables has become convolued. In particular, moving the logic which starts generating faults, having received the final ACK from qemu can be moved to a separate function. This simplifies the code substantially. This logic will also be needed by the postcopy path once the VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS feature is supported. Signed-off-by: Raphael Norwitz <raphael.norwitz@nutanix.com> Message-Id: <1588533678-23450-7-git-send-email-raphael.norwitz@nutanix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2020-04-15vhost-user-gpu: Release memory returned by vu_queue_pop() with free()Philippe Mathieu-Daudé2-3/+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>
2020-03-16build-sys: do not make qemu-ga link with pixmanMarc-André Lureau2-3/+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>
2020-03-16misc: Replace zero-length arrays with flexible array member (automatic)Philippe Mathieu-Daudé1-1/+1
Description copied from Linux kernel commit from Gustavo A. R. Silva (see [3]): --v-- description start --v-- The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member [1], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being unadvertenly introduced [2] to the Linux codebase from now on. --^-- description end --^-- Do the similar housekeeping in the QEMU codebase (which uses C99 since commit 7be41675f7cb). All these instances of code were found with the help of the following Coccinelle script: @@ identifier s, m, a; type t, T; @@ struct s { ... t m; - T a[0]; + T a[]; }; @@ identifier s, m, a; type t, T; @@ struct s { ... t m; - T a[0]; + T a[]; } QEMU_PACKED; [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=76497732932f [3] https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?id=17642a2fbd2c1 Inspired-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-02-27libvhost-user: implement in-band notificationsJohannes Berg2-3/+114
Add support for VHOST_USER_PROTOCOL_F_IN_BAND_NOTIFICATIONS, but as it's not desired by default, don't enable it unless the device implementation opts in by returning it from its protocol features callback. Note that I updated vu_set_vring_err_exec(), but didn't add any sending of the VHOST_USER_SLAVE_VRING_ERR message as there's no write to the err_fd today either. This also adds vu_queue_notify_sync() which can be used to force a synchronous notification if inband notifications are supported. Previously, I had left out the slave->master direction handling of F_REPLY_ACK, this now adds some code to support it as well. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Message-Id: <20200123081708.7817-7-johannes@sipsolutions.net> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-02-27libvhost-user: handle NOFD flag in call/kick/err betterJohannes Berg1-8/+16
The code here is odd, for example will it print out invalid file descriptor numbers that were never sent in the message. Clean that up a bit so it's actually possible to implement a device that uses polling. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Message-Id: <20200123081708.7817-5-johannes@sipsolutions.net> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-02-27libvhost-user-glib: use g_main_context_get_thread_default()Johannes Berg1-1/+1
If we use NULL, we just get the main program default mainloop here. Using g_main_context_get_thread_default() has basically the same effect, but it lets us start different devices in different threads with different mainloops, which can be useful. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Message-Id: <20200123081708.7817-4-johannes@sipsolutions.net> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-02-27libvhost-user-glib: fix VugDev main fd cleanupJohannes Berg3-7/+15
If you try to make a device implementation that can handle multiple connections and allow disconnections (which requires overriding the VHOST_USER_NONE handling), then glib will warn that we remove a src while it's still on the mainloop, and will poll() an FD that doesn't exist anymore. Fix this by making vug_source_new() require pairing with the new vug_source_destroy() so we can keep the GSource referenced in the meantime. Note that this requires calling the new API in vhost-user-input. vhost-user-gpu also uses vug_source_new(), but never seems to free the result at all, so I haven't changed anything there. Fixes: 8bb7ddb78a1c ("libvhost-user: add glib source helper") Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Message-Id: <20200123081708.7817-3-johannes@sipsolutions.net> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-02-27libvhost-user: implement VHOST_USER_PROTOCOL_F_REPLY_ACKJohannes Berg1-2/+10
This is really simple, since we know whether a response is already requested or not, so we can just send a (successful) response when there isn't one already. Given that, it's not all _that_ useful but the master can at least be sure the message was processed, and we can exercise more code paths using the example code. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Message-Id: <20200123081708.7817-2-johannes@sipsolutions.net> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-02-18contrib/rdmacm-mux: Remove superfluous semicolonPhilippe Mathieu-Daudé1-1/+1
Fixes: a5d2f6f8773 Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20200218094402.26625-14-philmd@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-01-23libvhost-user: Fix some memtable remap casesDr. David Alan Gilbert2-8/+28
If a new setmemtable command comes in once the vhost threads are running, it will remap the guests address space and the threads will now be looking in the wrong place. Fortunately we're running this command under lock, so we can update the queue mappings so that threads will look in the new-right place. Note: This doesn't fix things that the threads might be doing without a lock (e.g. a readv/writev!) That's for another time. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-23contrib/libvhost-user: Protect slave fd with mutexDr. David Alan Gilbert2-4/+23
In future patches we'll be performing commands on the slave-fd driven by commands on queues, since those queues will be driven by individual threads we need to make sure they don't attempt to use the slave-fd for multiple commands in parallel. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-01-05Implement backend program convention command for vhost-user-blkMicky Yun Chan1-45/+65
This patch is to add standard commands defined in docs/interop/vhost-user.rst For vhost-user-* program Signed-off-by: Micky Yun Chan (michiboo) <chanmickyyun@gmail.com> Message-Id: <20191209015331.5455-1-chanmickyyun@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-01-03Merge remote-tracking branch 'remotes/kraxel/tags/vga-20191220-pull-request' ↵Peter Maydell1-1/+1
into staging vga: two little bugfixes. # gpg: Signature made Fri 20 Dec 2019 06:06:04 GMT # gpg: using RSA key 4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full] # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full] # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full] # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/vga-20191220-pull-request: display/bochs-display: fix memory leak vhost-user-gpu: Drop trailing json comma Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-12-20vhost-user-gpu: Drop trailing json commaCole Robinson1-1/+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>
2019-12-17vhost-user-scsi: fix printf format warningMarc-André Lureau1-1/+1
Fixes: ../contrib/vhost-user-scsi/vhost-user-scsi.c:118:57: error: format specifies type 'unsigned char' but the argument has type 'int' [-Werror,-Wformat] g_warning("Unable to determine cdb len (0x%02hhX)", cdb[0] >> 5); Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-20vhost-user-input: use free(elem) instead of g_free(elem)Stefan Hajnoczi1-2/+2
The virtqueue element returned by vu_queue_pop() is allocated using malloc(3) by virtqueue_alloc_element(). Use the matching free(3) function instead of glib's g_free(). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20191119111626.112206-1-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-11-20libvhost-user: Zero memory allocated for VuVirtqInflightDescXie Yongji1-1/+1
Use a zero-initialized VuVirtqInflightDesc struct to avoid that scan-build reports that vq->resubmit_list[0].counter may be garbage value in vu_check_queue_inflights(). Fixes: 5f9ff1eff ("libvhost-user: Support tracking inflight I/O in shared memory") Reported-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Xie Yongji <xieyongji@baidu.com> Message-Id: <20191119075759.4334-1-xieyongji@baidu.com> Reviewed-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>
2019-11-12ivshmem-server: Terminate also on SIGINTJan Kiszka1-2/+3
Allows to shutdown a foreground session via ctrl-c. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Claudio Fontana <claudio.fontana@suse.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Message-Id: <99c1a7bd-1876-66a2-4b8e-d5bc86116fe7@web.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-12ivshmem-server: Clean up shmem on shutdownJan Kiszka1-0/+6
So far, the server leaves the posix shared memory object behind when terminating, requiring the user to explicitly remove it in order to start a new instance. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Claudio Fontana <claudio.fontana@suse.com> Message-Id: <d938a62c-7538-9d2b-cc0a-13b240ab9141@web.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-30Merge remote-tracking branch 'remotes/stsquad/tags/pull-gitdm-next-271019-1' ↵Peter Maydell2-0/+3
into staging gitdm updates - Add a few individuals - Add China Mobile # gpg: Signature made Sun 27 Oct 2019 19:21:15 GMT # gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44 # gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full] # Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44 * remotes/stsquad/tags/pull-gitdm-next-271019-1: contrib/gitdm: add China Mobile to the domain map contrib/gitdm: add Andrey to the individual group contrib/gitdm: add Emanuele as an individual Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-10-27contrib/gitdm: add China Mobile to the domain mapAlex Bennée1-0/+1
We've had a number of contributions from this domain. Mao has confirmed they are company contributions. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Acked-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Cc: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
2019-10-27contrib/gitdm: add Andrey to the individual groupAlex Bennée1-0/+1
Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Acked-by: Andrey Smirnov <andrew.smirnov@gmail.com>
2019-10-27contrib/gitdm: add Emanuele as an individualAlex Bennée1-0/+1
Again this is guess work based on public websites. Please confirm. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Acked-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
2019-10-26core: replace getpagesize() with qemu_real_host_page_sizeWei Yang1-1/+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>
2019-09-04Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell1-9/+10
virtio,vhost: fixes, features, cleanups. FLR support. Misc fixes, cleanups. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Wed 04 Sep 2019 12:53:35 BST # gpg: using RSA key 281F0DB8D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full] # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full] # Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67 # Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469 * remotes/mst/tags/for_upstream: libvhost-user: introduce and use vu_has_protocol_feature() libvhost-user: fix SLAVE_SEND_FD handling virtio-pci: Add Function Level Reset support virtio-rng: change default backend to rng-builtin virtio-rng: Keep the default backend out of VirtIORNGConf rng-builtin: add an RNG backend that uses qemu_guest_getrandom() Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-09-04libvhost-user: introduce and use vu_has_protocol_feature()Johannes Berg1-10/+10
This simplifies the various has_feature() checks, we already have vu_has_feature() but it checks features, not protocol features. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Message-Id: <20190904065021.1360-1-johannes@sipsolutions.net> Reviewed-by: Tiwei Bie <tiwei.bie@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-09-04libvhost-user: fix SLAVE_SEND_FD handlingJohannes Berg1-1/+2
It doesn't look like this could possibly work properly since VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD is defined to 10, but the dev->protocol_features has a bitmap. I suppose the peer this was tested with also supported VHOST_USER_PROTOCOL_F_LOG_SHMFD, in which case the test would always be false, but nevertheless the code seems wrong. Use has_feature() to fix this. Fixes: d84599f56c82 ("libvhost-user: support host notifier") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Message-Id: <20190903200422.11693-1-johannes@sipsolutions.net> Reviewed-by: Tiwei Bie <tiwei.bie@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-09-02contrib/gitdm: Add RT-RK to the domain-mapPhilippe Mathieu-Daudé1-0/+1
This company has at least 7 contributors, add a domain-map entry. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190822231231.1306-1-philmd@redhat.com> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-09-02.mailmap/aliases: add some further commentaryAlex Bennée2-3/+20
The two files are not interchangeable but a change to one *might* require a change to the other so lets flag that up with an explanation of what both files are trying to achieve. While we are at it document the many forms .mailmap can take in the header. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
2019-09-02contrib/gitdm: Add armbru@pond.sub.org to group-map-redhatMarkus Armbruster1-0/+1
Just to get the (few) accidental uses of my private e-mail address attributed correctly. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190822122350.29852-3-armbru@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-09-02contrib/gitdm: filetype interface is not in order, fixMarkus Armbruster1-1/+1
gitm prints the rather cryptic message "interface not found, appended to the last order". This is because filetypes.txt has filetype interface, but neglects to mention it in order. Fix that. Fixes: 2f28271d807edfcdc47a280c06999dd866dcae10 Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Message-Id: <20190822122350.29852-2-armbru@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-07-22contrib/elf2dmp: Build download.o with CURL_CFLAGSPeter Maydell1-0/+3
contrib/elf2dmp has a source file which uses curl/curl.h; although we link the final executable with CURL_LIBS, we forgot to build this source file with CURL_CFLAGS, so if the curl header is in a place that's not already on the system include path then it will fail to build. Add a line specifying the cflags needed for download.o; while we are here, bring the specification of the libs into line with this, since using a per-object variable setting is preferred over adding them to the final executable link line. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20190719100955.17180-1-peter.maydell@linaro.org
2019-07-15rdmacm-mux: fix strcpy string warningMarc-André Lureau1-1/+1
../contrib/rdmacm-mux/main.c: In function ‘parse_args’: ../contrib/rdmacm-mux/main.c:118:13: error: ‘strncpy’ specified bound 3835 equals destination size [-Werror=stringop-truncation] 118 | strncpy(unix_socket_path, optarg, SOCKET_PATH_MAX); Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190712165154.11504-1-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-07-04libvhost-user: implement VHOST_USER_PROTOCOL_F_MQStefan Hajnoczi1-3/+4
Existing vhost-user device backends, including vhost-user-scsi and vhost-user-blk, support multiqueue but libvhost-user currently does not advertise this. VHOST_USER_PROTOCOL_F_MQ enables the VHOST_USER_GET_QUEUE_NUM request needed for a vhost-user master to query the number of queues. For example, QEMU's vhost-user-net master depends on VHOST_USER_PROTOCOL_F_MQ for multiqueue. If you're wondering how any device backend with more than one virtqueue functions today, it's because device types with a fixed number of virtqueues do not require querying the number of queues. Therefore the vhost-user master for vhost-user-input with 2 virtqueues, for example, doesn't actually depend on VHOST_USER_PROTOCOL_F_MQ. It just enables virtqueues 0 and 1 without asking. Let there be multiqueue! Suggested-by: Sebastien Boeuf <sebastien.boeuf@intel.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190626074815.19994-4-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-07-04libvhost-user: support many virtqueuesStefan Hajnoczi8-37/+77
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>
2019-07-04libvhost-user: add vmsg_set_reply_u64() helperStefan Hajnoczi1-13/+13
The VhostUserMsg request is reused as the reply by message processing functions. This is risky since request fields may corrupt the reply if the vhost-user message handler function forgets to re-initialize them. Changing this practice would be very invasive but we can introduce a helper function to make u64 payload replies safe. This also eliminates code duplication in message processing functions. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190626074815.19994-2-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-06-16vhost-user-gpu: initialize msghdr & iov at declarationMarc-André Lureau1-13/+8
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>
2019-06-16vhost-user-input: check ioctl(EVIOCGNAME) return valueMarc-André Lureau1-1/+5
This should fix coverity CID 1401704. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20190605145829.7674-5-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>
2019-06-16vhost-user: improve error reportMarc-André Lureau2-2/+2
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>
2019-06-16vhost-user: check unix_listen() return valueMarc-André Lureau2-0/+8
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>
2019-06-16vhost-user-gpu: do not send scanout update if no GPU socketMarc-André Lureau1-1/+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>
2019-06-12Clean up a header guard symbols (again)Markus Armbruster3-6/+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>
2019-06-12Clean up a few header guard symbolsMarkus Armbruster1-3/+2
Commit 58ea30f5145 "Clean up header guards that don't match their file name" messed up contrib/elf2dmp/qemu_elf.h and tests/migration/migration-test.h. It missed target/cris/opcode-cris.h and tests/uefi-test-tools/UefiTestToolsPkg/Include/Guid/BiosTablesTest.h due to the scripts/clean-header-guards.pl bug fixed in the previous commit. Commit a8b991b52dc "Clean up ill-advised or unusual header guards" missed include/hw/xen/io/ring.h for the same reason. Commit 3979fca4b69 "disas: Rename include/disas/bfd.h back to include/disas/dis-asm.h" neglected to update the guard symbol for the rename. Commit a331c6d7741 "semihosting: implement a semihosting console" created include/hw/semihosting/console.h with an ill-advised guard symbol. Clean them up. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190604181618.19980-4-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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