The GTK Clipboard implementation may cause guest hangs. Therefore implement new configure switch: --enable-gtk-clipboard,
as a meson option disabled by default, which warns in the help text about the experimental nature of the feature. Regenerate the meson build options to include it. The initialization of the clipboard is gtk.c, as well as the compilation of gtk-clipboard.c are now conditional on this new option to be set. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1150 Signed-off-by: Claudio Fontana <cfont...@suse.de> Acked-by: Gerd Hoffmann <kra...@redhat.com> --- meson.build | 5 +++++ meson_options.txt | 7 +++++++ scripts/meson-buildoptions.sh | 3 +++ ui/gtk.c | 2 ++ ui/meson.build | 5 ++++- 5 files changed, 21 insertions(+), 1 deletion(-) v1 -> v2: * fixed a too long line in scripts/meson-buildoptions.sh (checkpatch) * meson.build: set have_gtk_clipboard variable once, avoid duplication (Jim) * mention the warnings about experimental nature of the feature in commit diff --git a/meson.build b/meson.build index cf3e517e56..5c6b5a1c75 100644 --- a/meson.build +++ b/meson.build @@ -1246,6 +1246,8 @@ endif gtk = not_found gtkx11 = not_found vte = not_found +have_gtk_clipboard = get_option('gtk_clipboard').enabled() + if not get_option('gtk').auto() or have_system gtk = dependency('gtk+-3.0', version: '>=3.22.0', method: 'pkg-config', @@ -1264,6 +1266,8 @@ if not get_option('gtk').auto() or have_system required: get_option('vte'), kwargs: static_kwargs) endif + elif have_gtk_clipboard + error('GTK clipboard requested, but GTK not found') endif endif @@ -1842,6 +1846,7 @@ if glusterfs.found() endif config_host_data.set('CONFIG_GTK', gtk.found()) config_host_data.set('CONFIG_VTE', vte.found()) +config_host_data.set('CONFIG_GTK_CLIPBOARD', have_gtk_clipboard) config_host_data.set('CONFIG_LIBATTR', have_old_libattr) config_host_data.set('CONFIG_LIBCAP_NG', libcap_ng.found()) config_host_data.set('CONFIG_EBPF', libbpf.found()) diff --git a/meson_options.txt b/meson_options.txt index 66128178bf..4b749ca549 100644 --- a/meson_options.txt +++ b/meson_options.txt @@ -219,6 +219,13 @@ option('vnc_sasl', type : 'feature', value : 'auto', description: 'SASL authentication for VNC server') option('vte', type : 'feature', value : 'auto', description: 'vte support for the gtk UI') + +# GTK Clipboard implementation is disabled by default, since it may cause hangs +# of the guest VCPUs. See gitlab issue 1150: +# https://gitlab.com/qemu-project/qemu/-/issues/1150 + +option('gtk_clipboard', type: 'feature', value : 'disabled', + description: 'clipboard support for the gtk UI (EXPERIMENTAL, MAY HANG)') option('xkbcommon', type : 'feature', value : 'auto', description: 'xkbcommon support') option('zstd', type : 'feature', value : 'auto', diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh index 2cb0de5601..aa6e30ea91 100644 --- a/scripts/meson-buildoptions.sh +++ b/scripts/meson-buildoptions.sh @@ -93,6 +93,7 @@ meson_options_help() { printf "%s\n" ' glusterfs Glusterfs block device driver' printf "%s\n" ' gnutls GNUTLS cryptography support' printf "%s\n" ' gtk GTK+ user interface' + printf "%s\n" ' gtk-clipboard clipboard support for GTK (EXPERIMENTAL, MAY HANG)' printf "%s\n" ' guest-agent Build QEMU Guest Agent' printf "%s\n" ' guest-agent-msi Build MSI package for the QEMU Guest Agent' printf "%s\n" ' hax HAX acceleration support' @@ -274,6 +275,8 @@ _meson_option_parse() { --disable-gprof) printf "%s" -Dgprof=false ;; --enable-gtk) printf "%s" -Dgtk=enabled ;; --disable-gtk) printf "%s" -Dgtk=disabled ;; + --enable-gtk-clipboard) printf "%s" -Dgtk_clipboard=enabled ;; + --disable-gtk-clipboard) printf "%s" -Dgtk_clipboard=disabled ;; --enable-guest-agent) printf "%s" -Dguest_agent=enabled ;; --disable-guest-agent) printf "%s" -Dguest_agent=disabled ;; --enable-guest-agent-msi) printf "%s" -Dguest_agent_msi=enabled ;; diff --git a/ui/gtk.c b/ui/gtk.c index 7ec21f7798..4817623c8f 100644 --- a/ui/gtk.c +++ b/ui/gtk.c @@ -2403,7 +2403,9 @@ static void gtk_display_init(DisplayState *ds, DisplayOptions *opts) opts->u.gtk.show_tabs) { gtk_menu_item_activate(GTK_MENU_ITEM(s->show_tabs_item)); } +#ifdef CONFIG_GTK_CLIPBOARD gd_clipboard_init(s); +#endif /* CONFIG_GTK_CLIPBOARD */ } static void early_gtk_display_init(DisplayOptions *opts) diff --git a/ui/meson.build b/ui/meson.build index ec13949776..c1b137bf33 100644 --- a/ui/meson.build +++ b/ui/meson.build @@ -97,7 +97,10 @@ if gtk.found() softmmu_ss.add(when: 'CONFIG_WIN32', if_true: files('win32-kbd-hook.c')) gtk_ss = ss.source_set() - gtk_ss.add(gtk, vte, pixman, files('gtk.c', 'gtk-clipboard.c')) + gtk_ss.add(gtk, vte, pixman, files('gtk.c')) + if have_gtk_clipboard + gtk_ss.add(files('gtk-clipboard.c')) + endif gtk_ss.add(when: x11, if_true: files('x_keymap.c')) gtk_ss.add(when: opengl, if_true: files('gtk-gl-area.c')) gtk_ss.add(when: [x11, opengl], if_true: files('gtk-egl.c')) -- 2.26.2
