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2018-03-16Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* Record-replay lockstep execution, log dumper and fixes (Alex, Pavel) * SCSI fix to pass maximum transfer size (Daniel Barboza) * chardev fixes and improved iothread support (Daniel Berrangé, Peter) * checkpatch tweak (Eric) * make help tweak (Marc-André) * make more PCI NICs available with -net or -nic (myself) * change default q35 NIC to e1000e (myself) * SCSI support for NDOB bit (myself) * membarrier system call support (myself) * SuperIO refactoring (Philippe) * miscellaneous cleanups and fixes (Thomas) # gpg: Signature made Mon 12 Mar 2018 16:10:52 GMT # gpg: using RSA key BFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (69 commits) tcg: fix cpu_io_recompile replay: update documentation replay: save vmstate of the asynchronous events replay: don't process async events when warping the clock scripts/replay-dump.py: replay log dumper replay: avoid recursive call of checkpoints replay: check return values of fwrite replay: push replay_mutex_lock up the call tree replay: don't destroy mutex at exit replay: make locking visible outside replay code replay/replay-internal.c: track holding of replay_lock replay/replay.c: bump REPLAY_VERSION again replay: save prior value of the host clock replay: added replay log format description replay: fix save/load vm for non-empty queue replay: fixed replay_enable_events replay: fix processing async events cpu-exec: fix exception_index handling hw/i386/pc: Factor out the superio code hw/alpha/dp264: Use the TYPE_SMC37C669_SUPERIO ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org> # Conflicts: # default-configs/i386-softmmu.mak # default-configs/x86_64-softmmu.mak
2018-03-13console: minimal hotplug suportGerd Hoffmann
This patch allows to unbind devices from QemuConsoles, using the new graphic_console_close() function. The QemuConsole will show a static display then, saying the device was unplugged. When re-plugging a display later on the QemuConsole will be reused. Eventually we will allocate and release QemuConsoles dynamically at some point in the future, that'll need more infrastructure though to notify user interfaces (gtk, sdl, spice, ...) about QemuConsoles coming and going. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-03-13ui/pixman: add qemu_drm_format_to_pixman()Gerd Hoffmann
Map drm fourcc codes to pixman formats. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed by: Kirti Wankhede <kwankhede@nvidia.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2018-03-12Polish the version strings containing the package versionThomas Huth
Since commit 67a1de0d195a there is no space anymore between the version number and the parentheses when running configure with --with-pkgversion=foo : $ qemu-system-s390x --version QEMU emulator version 2.11.50(foo) But the space is included when building without that option when building from a git checkout: $ qemu-system-s390x --version QEMU emulator version 2.11.50 (v2.11.0-1494-gbec9c64-dirty) The same confusion exists with the "query-version" QMP command. Let's fix this by introducing a proper QEMU_FULL_VERSION definition that includes the space and parentheses, while the QEMU_PKGVERSION should just cleanly contain the package version string itself. Note that this also changes the behavior of the "query-version" QMP command (the space and parentheses are not included there anymore), but that's supposed to be OK since the strings there are not meant to be parsed by other tools. Fixes: 67a1de0d195a6185c39b436159c9ffc7720bf979 Buglink: https://bugs.launchpad.net/qemu/+bug/1673373 Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1518692807-25859-1-git-send-email-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-12qapi: Add device ID and head parameters to screendumpThomas Huth
QEMU's screendump command can only take dumps from the primary display. When using multiple VGA cards, there is no way to get a dump from a secondary card or other display heads yet. So let's add a 'device' and a 'head' parameter to the HMP and QMP commands to be able to specify alternative devices and heads with the screendump command, too. Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1520267868-31778-1-git-send-email-thuth@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-03-12spice: add cursor_dmabuf supportGerd Hoffmann
Add support for cursor dmabufs. qemu has to render the cursor for that, so in case a cursor is present qemu allocates a new dmabuf, blits the scanout, blends in the pointer and passes on the new dmabuf to spice-server. Without cursor qemu continues to simply pass on the scanout dmabuf as-is. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20180308090618.30147-4-kraxel@redhat.com
2018-03-12spice: add scanout_dmabuf supportGerd Hoffmann
Add support for scanout dmabufs. Just pass them through to spice-server. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20180308090618.30147-3-kraxel@redhat.com
2018-03-12spice: drop dprint() debug loggingGerd Hoffmann
Some calls are deleted, some are converted into tracepoints. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20180308090618.30147-2-kraxel@redhat.com
2018-03-12vnc: deal with surface NULL pointersGerd Hoffmann
Secondary displays in multihead setups are allowed to have a NULL DisplaySurface. Typically user interfaces handle this by hiding the window which shows the display in question. This isn't an option for vnc though because it simply hasn't a concept of windows or outputs. So handle the situation by showing a placeholder DisplaySurface instead. Also check in console_select whenever a surface is preset in the first place before requesting an update. This fixes a segfault which can be triggered by switching to an unused display (via vtrl-alt-<nr>) in a multihead setup, for example using -device virtio-vga,max_outputs=2. Cc: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-id: 20180308161803.6152-1-kraxel@redhat.com
2018-03-12ui/gtk-egl: add cursor_dmabuf supportGerd Hoffmann
Add support for cursor dmabufs to gtk-egl. Just blend in the cursor (if we have one) when rendering the dmabuf. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180306090951.22932-7-kraxel@redhat.com
2018-03-12ui/gtk-egl: add scanout_dmabuf supportGerd Hoffmann
Add support for dmabuf scanouts to gtk-egl. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180306090951.22932-6-kraxel@redhat.com
2018-03-12ui/gtk: use GtkGlArea on wayland onlyGerd Hoffmann
For dma-buf support we need a egl context. The gtk x11 backend uses glx contexts though. We can't use the GtkGlArea widget on x11 because of that, so use our own gtk-egl code instead. wayland continues to use the GtkGlArea widget. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180306090951.22932-5-kraxel@redhat.com
2018-03-12ui/opengl: Makefile cleanupGerd Hoffmann
With gtk.mo bits moved away we don't need the ifeq any more. Also add missing opengl libs for some objects. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180306090951.22932-4-kraxel@redhat.com
2018-03-12ui/gtk: group gtk.mo declarations in MakefileGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180306090951.22932-3-kraxel@redhat.com
2018-03-12ui/gtk: make GtkGlArea usage a runtime optionGerd Hoffmann
Compile in both gtk-egl and gtk-gl-area, then allow to choose at runtime instead of compile time which opengl variant we want use. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180306090951.22932-2-kraxel@redhat.com
2018-03-06qio: non-default context for TLS handshakePeter Xu
A new parameter "context" is added to qio_channel_tls_handshake() is to allow the TLS to be run on a non-default context. Still, no functional change. Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-03-05Merge remote-tracking branch 'remotes/kraxel/tags/ui-20180305-pull-request' ↵Peter Maydell
into staging ui: build curses, gtk and sdl as modules. # gpg: Signature made Mon 05 Mar 2018 08:48:24 GMT # gpg: using RSA key 4CB6D8EED3E87138 # 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 * remotes/kraxel/tags/ui-20180305-pull-request: ui/sdl: build as module audio: rename CONFIG_* to CONFIG_AUDIO_* ui/curses: build as module ui/gtk: build as module configure: opengl doesn't depend on x11 configure: add X11 vars to config-host.mak console: add ui module loading support console: add and use qemu_display_find_default egl-headless: switch over to new display registry curses: switch over to new display registry cocoa: switch over to new display registry sdl: switch over to new display registry console: add qemu display registry, add gtk Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-05ui/sdl: build as moduleGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-14-kraxel@redhat.com
2018-03-05ui/curses: build as moduleGerd Hoffmann
Also drop curses libs from libs_softmmu. Add CURSES_{CFLAGS,LIBS} variables so we can use them for linking the curses module. Also make target/unicore32/helper.o depend on curses which uses curses directly for some reason ... Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-12-kraxel@redhat.com
2018-03-05ui/gtk: build as moduleGerd Hoffmann
Also drop gtk and vte libs from libs_softmmu, so the libs are not pulled in unless the gtk module actually gets loaded. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-11-kraxel@redhat.com
2018-03-05configure: add X11 vars to config-host.makGerd Hoffmann
Simplifies handling the X11 dependency, also makes ui/Makefile.objs more readable. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-9-kraxel@redhat.com
2018-03-05console: add ui module loading supportGerd Hoffmann
If a requested user interface is not available, try loading it as module, simliar to block layer modules. Needed to keep things working when followup patches start to build user interfaces as modules. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-8-kraxel@redhat.com
2018-03-05console: add and use qemu_display_find_defaultGerd Hoffmann
Using the new display registry instead of #ifdefs in vl.c. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-7-kraxel@redhat.com
2018-03-05egl-headless: switch over to new display registryGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-6-kraxel@redhat.com
2018-03-05curses: switch over to new display registryGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-5-kraxel@redhat.com
2018-03-05cocoa: switch over to new display registryGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-4-kraxel@redhat.com
2018-03-05sdl: switch over to new display registryGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-3-kraxel@redhat.com
2018-03-05console: add qemu display registry, add gtkGerd Hoffmann
Add a registry for user interfaces. Add qemu_display_init and qemu_display_early_init helper functions for display initialization. Hook up gtk ui as first user. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180301100547.18962-2-kraxel@redhat.com
2018-03-02qapi: Move qapi-schema.json to qapi/, rename generated filesMarkus Armbruster
Move qapi-schema.json to qapi/, so it's next to its modules, and all files get generated to qapi/, not just the ones generated for modules. Consistently name the generated files qapi-MODULE.EXT: qmp-commands.[ch] become qapi-commands.[ch], qapi-event.[ch] become qapi-events.[ch], and qmp-introspect.[ch] become qapi-introspect.[ch]. This gets rid of the temporary hacks in scripts/qapi/commands.py, scripts/qapi/events.py, and scripts/qapi/common.py. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-28-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> [eblake: Fix trailing dot in tpm.c, undo temporary hack for OSX toolchain] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02qapi: Empty out qapi-schema.jsonMarkus Armbruster
The previous commit improved compile time by including less of the generated QAPI headers. This is impossible for stuff defined directly in qapi-schema.json, because that ends up in headers that that pull in everything. Move everything but include directives from qapi-schema.json to new sub-module qapi/misc.json, then include just the "misc" shard where possible. It's possible everywhere, except: * monitor.c needs qmp-command.h to get qmp_init_marshal() * monitor.c, ui/vnc.c and the generated qapi-event-FOO.c need qapi-event.h to get enum QAPIEvent Perhaps we'll get rid of those some other day. Adding a type to qapi/migration.json now recompiles some 120 instead of 2300 out of 5100 objects. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-25-armbru@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02Include less of the generated modular QAPI headersMarkus Armbruster
In my "build everything" tree, a change to the types in qapi-schema.json triggers a recompile of about 4800 out of 5100 objects. The previous commit split up qmp-commands.h, qmp-event.h, qmp-visit.h, qapi-types.h. Each of these headers still includes all its shards. Reduce compile time by including just the shards we actually need. To illustrate the benefits: adding a type to qapi/migration.json now recompiles some 2300 instead of 4800 objects. The next commit will improve it further. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-24-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-02-22keymap: consider modifier state when picking a mappingGerd Hoffmann
Pass the modifier state to the keymap lookup function. In case multiple keysym -> keycode mappings exist look at the modifier state and prefer the mapping where the modifier state matches. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20180222070513.8740-6-kraxel@redhat.com
2018-02-22keymap: record multiple keysym -> keycode mappingsGerd Hoffmann
Sometimes the same keysym can be created using different key combinations. Record them all in the reverse keymap, not only the first one. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20180222070513.8740-5-kraxel@redhat.com
2018-02-22keymap: numpad keysyms and keycodes are fixedGerd Hoffmann
No need to figure them at runtime from the keymap. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20180222070513.8740-4-kraxel@redhat.com
2018-02-22keymap: use glib hash for kbd_layout_tGerd Hoffmann
Drop home-grown lookup code, which is a strange mix of a lookup table and a list. Use standard glib hash instead. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20180222070513.8740-3-kraxel@redhat.com
2018-02-22keymap: make struct kbd_layout_t private to ui/keymaps.cGerd Hoffmann
Also use kbd_layout_t pointers instead of void pointers. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20180222070513.8740-2-kraxel@redhat.com
2018-02-22egl-helpers: add alpha channel to texture formatGerd Hoffmann
Needed when rendering cursers which (unlike framebuffers) actually are transparent. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180220110433.20353-4-kraxel@redhat.com
2018-02-22egl-headless: cursor_dmabuf: handle NULL cursorGerd Hoffmann
The cursor dmabuf can be NULL, in case no cursor defined by the guest. Happens for example when linux guests show the framebuffer console. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180220110433.20353-3-kraxel@redhat.com
2018-02-22console/opengl: split up dpy_gl_cursor opsGerd Hoffmann
Split the cursor callback into two, one for setting the dmabuf, one for setting the position. Also add hotspot information. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180220110433.20353-2-kraxel@redhat.com
2018-02-22sdl2: fix hotkey keyupGerd Hoffmann
After some hotkey was pressed sdl2 doesn't forward the first modifier keyup event to the guest, resulting in stuck modifier keys. Fix the logic in handle_keyup(). Also gui_key_modifier_pressed doesn't need to be a global variable. Reported-by: Howard Spoelstra <hsp.cat7@gmail.com> Tested-by: Howard Spoelstra <hsp.cat7@gmail.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-id: 20180220150444.784-1-kraxel@redhat.com
2018-02-20ui: Reorder vte terminal packing to avoid gtk3 warningsJan Kiszka
Fill the terminal box from right to left to avoid Gtk-WARNING **: Allocating size to GtkScrollbar 0x55f6d54b0200 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate? Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Message-id: 902aaef8-d20e-0530-dea2-cdfe3db33ff3@web.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-02-20cocoa: use DisplayOptionsGerd Hoffmann
Switch cocoa ui to use qapi DisplayOptions for configuration. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180202111022.19269-10-kraxel@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-02-20curses: use DisplayOptionsGerd Hoffmann
Switch curses ui to use qapi DisplayOptions for configuration. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180202111022.19269-9-kraxel@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-02-20egl-headless: use DisplayOptionsGerd Hoffmann
Switch egl-headless ui to use qapi DisplayOptions for configuration. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180202111022.19269-8-kraxel@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-02-20sdl: use DisplayOptionsGerd Hoffmann
Switch sdl ui to use qapi DisplayOptions for configuration. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180202111022.19269-6-kraxel@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-02-20gtk: add and use DisplayOptions + DisplayGTKGerd Hoffmann
Add QAPI DisplayType enum, DisplayOptions union and DisplayGTK struct. Switch gtk configuration to use the qapi type. Some bookkeeping (fullscreen for example) is done twice now, this is temporary until more/all UIs are switched over to qapi configuration. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180202111022.19269-5-kraxel@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-02-16ui: extend VNC trottling tracing to SASL codepathsDaniel P. Berrangé
In previous commit: commit 6aa22a29187e1908f5db738d27c64a9efc8d0bfa Author: Daniel P. Berrange <berrange@redhat.com> Date: Mon Dec 18 19:12:27 2017 +0000 ui: add trace events related to VNC client throttling trace points related to unthrottling client I/O were missed from the SASL codepaths. Reported-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Message-id: 20180205114938.15784-5-berrange@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-02-16ui: check VNC audio frequency limit at time of reading from clientDaniel P. Berrangé
The 'vs->as.freq' value is a signed integer, which is read from an unsigned 32-bit int field on the wire. There is thus a risk of overflow on 32-bit platforms. Move the frequency limit checking to be done at time of read before casting to a signed integer. Reported-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20180205114938.15784-4-berrange@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-02-16ui: avoid 'local_err' variable shadowing in VNC SASL authDaniel P. Berrangé
The start_auth_sasl() method declares a 'Error *local_err' variable in an inner if () {...} scope, which shadows a variable of the same name declared at the start of the method. This is confusing for reviewers and may trigger compiler warnings. Reported-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20180205114938.15784-3-berrange@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-02-16ui: avoid risk of 32-bit int overflow in VNC buffer checkDaniel P. Berrangé
For very large framebuffers, it is theoretically possible for the result of 'vs->throttle_output_offset * VNC_THROTTLE_OUTPUT_LIMIT_SCALE' to exceed the size of a 32-bit int. For this to happen in practice, the video RAM would have to be set to a large enough value, which is not likely today. None the less we can be paranoid against future growth by using division instead of multiplication when checking the limits. Reported-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20180205114938.15784-2-berrange@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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