Merge tag 'misc-pull-request' of https://gitlab.com/marcandre.lureau/…

…qemu into staging

Misc fixes and cleanups

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# gpg: Signature made Tue 03 Oct 2023 08:34:24 EDT
# gpg:                using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg:                issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276  F62D DAE8 E109 7596 9CE5

* tag 'misc-pull-request' of https://gitlab.com/marcandre.lureau/qemu:
  chardev/char-pty: Avoid losing bytes when the other side just (re-)connected
  hw/display/ramfb: plug slight guest-triggerable leak on mode setting
  hw/pc: remove needless includes
  hw/core: remove needless includes
  analyze-migration: ignore RAM_SAVE_FLAG_MULTIFD_FLUSH
  ui/gtk: fix UI info precondition
  win32: avoid discarding the exception handler
  ui: add XBGR8888 and ABGR8888 in drm_format_pixman_map
  ui/console: sanitize search in qemu_graphic_console_is_multihead()
  ui/console: eliminate QOM properties from qemu_console_is_multihead()
  ui/console: only walk QemuGraphicConsoles in qemu_console_is_multihead()
  ui/console: make qemu_console_is_multihead() static
  input: Allow to choose console with qemu_input_is_absolute

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

chardev/char-pty.c

@@ -106,11 +106,27 @@ static void pty_chr_update_read_handler(Chardev *chr)
 static int char_pty_chr_write(Chardev *chr, const uint8_t *buf, int len)
 {
     PtyChardev *s = PTY_CHARDEV(chr);
+    GPollFD pfd;
+    int rc;
 
-    if (!s->connected) {
-        return len;
+    if (s->connected) {
+        return io_channel_send(s->ioc, buf, len);
     }
-    return io_channel_send(s->ioc, buf, len);
+
+    /*
+     * The other side might already be re-connected, but the timer might
+     * not have fired yet. So let's check here whether we can write again:
+     */
+    pfd.fd = QIO_CHANNEL_FILE(s->ioc)->fd;
+    pfd.events = G_IO_OUT;
+    pfd.revents = 0;
+    rc = RETRY_ON_EINTR(g_poll(&pfd, 1, 0));
+    g_assert(rc >= 0);
+    if (!(pfd.revents & G_IO_HUP) && (pfd.revents & G_IO_OUT)) {
+        io_channel_send(s->ioc, buf, len);
+    }
+
+    return len;
 }
 
 static GSource *pty_chr_add_watch(Chardev *chr, GIOCondition cond)

hw/core/machine.c

@@ -11,32 +11,22 @@
  */
 
 #include "qemu/osdep.h"
-#include "qemu/option.h"
 #include "qemu/accel.h"
 #include "sysemu/replay.h"
-#include "qemu/units.h"
 #include "hw/boards.h"
 #include "hw/loader.h"
 #include "qapi/error.h"
-#include "qapi/qapi-visit-common.h"
 #include "qapi/qapi-visit-machine.h"
-#include "qapi/visitor.h"
 #include "qom/object_interfaces.h"
-#include "hw/sysbus.h"
 #include "sysemu/cpus.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/reset.h"
 #include "sysemu/runstate.h"
-#include "sysemu/numa.h"
 #include "sysemu/xen.h"
-#include "qemu/error-report.h"
 #include "sysemu/qtest.h"
-#include "hw/pci/pci.h"
 #include "hw/mem/nvdimm.h"
 #include "migration/global_state.h"
-#include "migration/vmstate.h"
 #include "exec/confidential-guest-support.h"
-#include "hw/virtio/virtio.h"
 #include "hw/virtio/virtio-pci.h"
 #include "hw/virtio/virtio-net.h"
 #include "audio/audio.h"

hw/display/ramfb.c

@@ -97,6 +97,7 @@ static void ramfb_fw_cfg_write(void *dev, off_t offset, size_t len)
 
     s->width = width;
     s->height = height;
+    qemu_free_displaysurface(s->ds);
     s->ds = surface;
 }
 

hw/i386/pc.c

@@ -24,79 +24,40 @@
 
 #include "qemu/osdep.h"
 #include "qemu/units.h"
-#include "hw/i386/x86.h"
 #include "hw/i386/pc.h"
 #include "hw/char/serial.h"
 #include "hw/char/parallel.h"
-#include "hw/i386/topology.h"
 #include "hw/i386/fw_cfg.h"
 #include "hw/i386/vmport.h"
 #include "sysemu/cpus.h"
-#include "hw/block/fdc.h"
 #include "hw/ide/internal.h"
-#include "hw/ide/isa.h"
-#include "hw/pci/pci.h"
-#include "hw/pci/pci_bus.h"
-#include "hw/pci-bridge/pci_expander_bridge.h"
-#include "hw/nvram/fw_cfg.h"
 #include "hw/timer/hpet.h"
-#include "hw/firmware/smbios.h"
 #include "hw/loader.h"
-#include "elf.h"
-#include "migration/vmstate.h"
-#include "multiboot.h"
 #include "hw/rtc/mc146818rtc.h"
 #include "hw/intc/i8259.h"
-#include "hw/intc/ioapic.h"
 #include "hw/timer/i8254.h"
 #include "hw/input/i8042.h"
-#include "hw/irq.h"
 #include "hw/audio/pcspk.h"
-#include "hw/pci/msi.h"
-#include "hw/sysbus.h"
 #include "sysemu/sysemu.h"
-#include "sysemu/tcg.h"
-#include "sysemu/numa.h"
-#include "sysemu/kvm.h"
 #include "sysemu/xen.h"
 #include "sysemu/reset.h"
-#include "sysemu/runstate.h"
 #include "kvm/kvm_i386.h"
 #include "hw/xen/xen.h"
-#include "hw/xen/start_info.h"
-#include "ui/qemu-spice.h"
-#include "exec/memory.h"
-#include "qemu/bitmap.h"
-#include "qemu/config-file.h"
 #include "qemu/error-report.h"
-#include "qemu/option.h"
-#include "qemu/cutils.h"
-#include "hw/acpi/acpi.h"
 #include "hw/acpi/cpu_hotplug.h"
 #include "acpi-build.h"
-#include "hw/mem/pc-dimm.h"
 #include "hw/mem/nvdimm.h"
-#include "hw/cxl/cxl.h"
 #include "hw/cxl/cxl_host.h"
-#include "qapi/error.h"
-#include "qapi/qapi-visit-common.h"
-#include "qapi/qapi-visit-machine.h"
-#include "qapi/visitor.h"
-#include "hw/core/cpu.h"
 #include "hw/usb.h"
 #include "hw/i386/intel_iommu.h"
 #include "hw/net/ne2000-isa.h"
-#include "standard-headers/asm-x86/bootparam.h"
 #include "hw/virtio/virtio-iommu.h"
 #include "hw/virtio/virtio-md-pci.h"
 #include "hw/i386/kvm/xen_overlay.h"
 #include "hw/i386/kvm/xen_evtchn.h"
 #include "hw/i386/kvm/xen_gnttab.h"
 #include "hw/i386/kvm/xen_xenstore.h"
-#include "sysemu/replay.h"
-#include "target/i386/cpu.h"
 #include "e820_memory_layout.h"
-#include "fw_cfg.h"
 #include "trace.h"
 #include CONFIG_DEVICES
 

include/qemu/compiler.h

@@ -206,4 +206,10 @@
 #define QEMU_ANNOTATE(x)
 #endif
 
+#if __has_attribute(used)
+# define QEMU_USED __attribute__((used))
+#else
+# define QEMU_USED
+#endif
+
 #endif /* COMPILER_H */

include/ui/console.h

@@ -422,7 +422,6 @@ bool qemu_console_is_visible(QemuConsole *con);
 bool qemu_console_is_graphic(QemuConsole *con);
 bool qemu_console_is_fixedsize(QemuConsole *con);
 bool qemu_console_is_gl_blocked(QemuConsole *con);
-bool qemu_console_is_multihead(DeviceState *dev);
 char *qemu_console_get_label(QemuConsole *con);
 int qemu_console_get_index(QemuConsole *con);
 uint32_t qemu_console_get_head(QemuConsole *con);

include/ui/input.h

@@ -57,7 +57,7 @@ void qemu_input_queue_btn(QemuConsole *src, InputButton btn, bool down);
 void qemu_input_update_buttons(QemuConsole *src, uint32_t *button_map,
                                uint32_t button_old, uint32_t button_new);
 
-bool qemu_input_is_absolute(void);
+bool qemu_input_is_absolute(QemuConsole *con);
 int qemu_input_scale_axis(int value,
                           int min_in, int max_in,
                           int min_out, int max_out);

include/ui/qemu-pixman.h

@@ -32,6 +32,8 @@
 # define PIXMAN_LE_r8g8b8     PIXMAN_b8g8r8
 # define PIXMAN_LE_a8r8g8b8   PIXMAN_b8g8r8a8
 # define PIXMAN_LE_x8r8g8b8   PIXMAN_b8g8r8x8
+# define PIXMAN_LE_a8b8g8r8   PIXMAN_r8g8b8a8
+# define PIXMAN_LE_x8b8g8r8   PIXMAN_r8g8b8x8
 #else
 # define PIXMAN_BE_r8g8b8     PIXMAN_b8g8r8
 # define PIXMAN_BE_x8r8g8b8   PIXMAN_b8g8r8x8
@@ -45,6 +47,8 @@
 # define PIXMAN_LE_r8g8b8     PIXMAN_r8g8b8
 # define PIXMAN_LE_a8r8g8b8   PIXMAN_a8r8g8b8
 # define PIXMAN_LE_x8r8g8b8   PIXMAN_x8r8g8b8
+# define PIXMAN_LE_a8b8g8r8   PIXMAN_a8b8g8r8
+# define PIXMAN_LE_x8b8g8r8   PIXMAN_x8b8g8r8
 #endif
 
 #define QEMU_PIXMAN_COLOR(r, g, b)                                               \

scripts/analyze-migration.py

@@ -111,6 +111,8 @@ class RamSection(object):
     RAM_SAVE_FLAG_CONTINUE = 0x20
     RAM_SAVE_FLAG_XBZRLE   = 0x40
     RAM_SAVE_FLAG_HOOK     = 0x80
+    RAM_SAVE_FLAG_COMPRESS_PAGE = 0x100
+    RAM_SAVE_FLAG_MULTIFD_FLUSH = 0x200
 
     def __init__(self, file, version_id, ramargs, section_key):
         if version_id != 4:
@@ -205,6 +207,8 @@ def read(self):
                 raise Exception("XBZRLE RAM compression is not supported yet")
             elif flags & self.RAM_SAVE_FLAG_HOOK:
                 raise Exception("RAM hooks don't make sense with files")
+            if flags & self.RAM_SAVE_FLAG_MULTIFD_FLUSH:
+                continue
 
             # End of RAM section
             if flags & self.RAM_SAVE_FLAG_EOS:

ui/cocoa.m

@@ -2001,7 +2001,7 @@ static void cocoa_refresh(DisplayChangeListener *dcl)
     COCOA_DEBUG("qemu_cocoa: cocoa_refresh\n");
     graphic_hw_update(NULL);
 
-    if (qemu_input_is_absolute()) {
+    if (qemu_input_is_absolute(dcl->con)) {
         dispatch_async(dispatch_get_main_queue(), ^{
             if (![cocoaView isAbsoluteEnabled]) {
                 if ([cocoaView isMouseGrabbed]) {

ui/console.c

@@ -1434,25 +1434,23 @@ bool qemu_console_is_gl_blocked(QemuConsole *con)
     return con->gl_block;
 }
 
-bool qemu_console_is_multihead(DeviceState *dev)
+static bool qemu_graphic_console_is_multihead(QemuGraphicConsole *c)
 {
     QemuConsole *con;
-    Object *obj;
-    uint32_t f = 0xffffffff;
-    uint32_t h;
 
     QTAILQ_FOREACH(con, &consoles, next) {
-        obj = object_property_get_link(OBJECT(con),
-                                       "device", &error_abort);
-        if (DEVICE(obj) != dev) {
+        QemuGraphicConsole *candidate;
+
+        if (!QEMU_IS_GRAPHIC_CONSOLE(con)) {
             continue;
         }
 
-        h = object_property_get_uint(OBJECT(con),
-                                     "head", &error_abort);
-        if (f == 0xffffffff) {
-            f = h;
-        } else if (h != f) {
+        candidate = QEMU_GRAPHIC_CONSOLE(con);
+        if (candidate->device != c->device) {
+            continue;
+        }
+
+        if (candidate->head != c->head) {
             return true;
         }
     }
@@ -1468,7 +1466,7 @@ char *qemu_console_get_label(QemuConsole *con)
             bool multihead;
 
             dev = DEVICE(c->device);
-            multihead = qemu_console_is_multihead(dev);
+            multihead = qemu_graphic_console_is_multihead(c);
             if (multihead) {
                 return g_strdup_printf("%s.%d", dev->id ?
                                        dev->id :

ui/dbus-console.c

@@ -386,7 +386,7 @@ dbus_mouse_rel_motion(DBusDisplayConsole *ddc,
 {
     trace_dbus_mouse_rel_motion(dx, dy);
 
-    if (qemu_input_is_absolute()) {
+    if (qemu_input_is_absolute(ddc->dcl.con)) {
         g_dbus_method_invocation_return_error(
             invocation, DBUS_DISPLAY_ERROR,
             DBUS_DISPLAY_ERROR_INVALID,
@@ -453,7 +453,7 @@ dbus_mouse_set_pos(DBusDisplayConsole *ddc,
 
     trace_dbus_mouse_set_pos(x, y);
 
-    if (!qemu_input_is_absolute()) {
+    if (!qemu_input_is_absolute(ddc->dcl.con)) {
         g_dbus_method_invocation_return_error(
             invocation, DBUS_DISPLAY_ERROR,
             DBUS_DISPLAY_ERROR_INVALID,
@@ -514,7 +514,7 @@ static void
 dbus_mouse_update_is_absolute(DBusDisplayConsole *ddc)
 {
     g_object_set(ddc->iface_mouse,
-                 "is-absolute", qemu_input_is_absolute(),
+                 "is-absolute", qemu_input_is_absolute(ddc->dcl.con),
                  NULL);
 }
 

ui/gtk.c

@@ -204,7 +204,7 @@ static void gd_update_cursor(VirtualConsole *vc)
     }
 
     window = gtk_widget_get_window(GTK_WIDGET(vc->gfx.drawing_area));
-    if (s->full_screen || qemu_input_is_absolute() || s->ptr_owner == vc) {
+    if (s->full_screen || qemu_input_is_absolute(vc->gfx.dcl.con) || s->ptr_owner == vc) {
         gdk_window_set_cursor(window, s->null_cursor);
     } else {
         gdk_window_set_cursor(window, NULL);
@@ -453,7 +453,7 @@ static void gd_mouse_set(DisplayChangeListener *dcl,
     gint x_root, y_root;
 
     if (!gtk_widget_get_realized(vc->gfx.drawing_area) ||
-        qemu_input_is_absolute()) {
+        qemu_input_is_absolute(dcl->con)) {
         return;
     }
 
@@ -689,7 +689,7 @@ static void gd_mouse_mode_change(Notifier *notify, void *data)
 
     s = container_of(notify, GtkDisplayState, mouse_mode_notifier);
     /* release the grab at switching to absolute mode */
-    if (qemu_input_is_absolute() && s->ptr_owner) {
+    if (s->ptr_owner && qemu_input_is_absolute(s->ptr_owner->gfx.dcl.con)) {
         if (!s->ptr_owner->window) {
             gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(s->grab_item),
                                            FALSE);
@@ -726,6 +726,10 @@ static void gd_set_ui_refresh_rate(VirtualConsole *vc, int refresh_rate)
 {
     QemuUIInfo info;
 
+    if (!dpy_ui_info_supported(vc->gfx.dcl.con)) {
+        return;
+    }
+
     info = *dpy_get_ui_info(vc->gfx.dcl.con);
     info.refresh_rate = refresh_rate;
     dpy_set_ui_info(vc->gfx.dcl.con, &info, true);
@@ -735,6 +739,10 @@ static void gd_set_ui_size(VirtualConsole *vc, gint width, gint height)
 {
     QemuUIInfo info;
 
+    if (!dpy_ui_info_supported(vc->gfx.dcl.con)) {
+        return;
+    }
+
     info = *dpy_get_ui_info(vc->gfx.dcl.con);
     info.width = width;
     info.height = height;
@@ -903,7 +911,7 @@ static gboolean gd_motion_event(GtkWidget *widget, GdkEventMotion *motion,
     x = (motion->x - mx) / vc->gfx.scale_x * ws;
     y = (motion->y - my) / vc->gfx.scale_y * ws;
 
-    if (qemu_input_is_absolute()) {
+    if (qemu_input_is_absolute(vc->gfx.dcl.con)) {
         if (x < 0 || y < 0 ||
             x >= surface_width(vc->gfx.ds) ||
             y >= surface_height(vc->gfx.ds)) {
@@ -923,7 +931,7 @@ static gboolean gd_motion_event(GtkWidget *widget, GdkEventMotion *motion,
     s->last_y = y;
     s->last_set = TRUE;
 
-    if (!qemu_input_is_absolute() && s->ptr_owner == vc) {
+    if (!qemu_input_is_absolute(vc->gfx.dcl.con) && s->ptr_owner == vc) {
         GdkScreen *screen = gtk_widget_get_screen(vc->gfx.drawing_area);
         GdkDisplay *dpy = gtk_widget_get_display(widget);
         GdkWindow *win = gtk_widget_get_window(widget);
@@ -965,7 +973,7 @@ static gboolean gd_button_event(GtkWidget *widget, GdkEventButton *button,
 
     /* implicitly grab the input at the first click in the relative mode */
     if (button->button == 1 && button->type == GDK_BUTTON_PRESS &&
-        !qemu_input_is_absolute() && s->ptr_owner != vc) {
+        !qemu_input_is_absolute(vc->gfx.dcl.con) && s->ptr_owner != vc) {
         if (!vc->window) {
             gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(s->grab_item),
                                            TRUE);