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ui/console: move console compatibility check to dcl_display_console() 

The current checks are done at registration time only. However, if a DCL
has no specific console specified, it may be switched dynamically with
console_select() later on.

Let's move the checks when displaychangelistener_display_console() is
called, which includes registration time and remains fatal if the
specified console is incompatible.

Note: we may want to display the compatibility error to the DCL, this is
left for a future improvement.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc-André Lureau 2022-02-16 20:16:55 +04:00
parent 417a231947
commit 4b7b661d8f
1 changed files with 9 additions and 10 deletions
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19
ui/console.c
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@ -148,6 +148,8 @@ static DisplayState *get_alloc_displaystate(void);
static void text_console_update_cursor_timer(void);
static void text_console_update_cursor(void *opaque);
static bool displaychangelistener_has_dmabuf(DisplayChangeListener *dcl);
static bool console_compatible_with(QemuConsole *con,
DisplayChangeListener *dcl, Error **errp);
static void gui_update(void *opaque)
{
@ -1057,13 +1059,14 @@ static void console_putchar(QemuConsole *s, int ch)
}
static void displaychangelistener_display_console(DisplayChangeListener *dcl,
QemuConsole *con)
QemuConsole *con,
Error **errp)
{
static const char nodev[] =
"This VM has no graphic display device.";
static DisplaySurface *dummy;
if (!con) {
if (!con || !console_compatible_with(con, dcl, errp)) {
if (!dcl->ops->dpy_gfx_switch) {
return;
}
@ -1114,7 +1117,7 @@ void console_select(unsigned int index)
if (dcl->con != NULL) {
continue;
}
displaychangelistener_display_console(dcl, s);
displaychangelistener_display_console(dcl, s, NULL);
}
}
if (ds->have_text) {
@ -1475,8 +1478,8 @@ static bool displaychangelistener_has_dmabuf(DisplayChangeListener *dcl)
return false;
}
static bool dpy_compatible_with(QemuConsole *con,
DisplayChangeListener *dcl, Error **errp)
static bool console_compatible_with(QemuConsole *con,
DisplayChangeListener *dcl, Error **errp)
{
int flags;
@ -1522,10 +1525,6 @@ void register_displaychangelistener(DisplayChangeListener *dcl)
assert(!dcl->ds);
if (dcl->con) {
dpy_compatible_with(dcl->con, dcl, &error_fatal);
}
trace_displaychangelistener_register(dcl, dcl->ops->dpy_name);
dcl->ds = get_alloc_displaystate();
QLIST_INSERT_HEAD(&dcl->ds->listeners, dcl, next);
@ -1536,7 +1535,7 @@ void register_displaychangelistener(DisplayChangeListener *dcl)
} else {
con = active_console;
}
displaychangelistener_display_console(dcl, con);
displaychangelistener_display_console(dcl, con, dcl->con ? &error_fatal : NULL);
text_console_update_cursor(NULL);
}