vga: disable global_vmstate, virtio-gpu scanout tracking fixes.

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Merge remote-tracking branch 'remotes/kraxel/tags/vga-20180703-pull-request' into staging

vga: disable global_vmstate, virtio-gpu scanout tracking fixes.

# gpg: Signature made Tue 03 Jul 2018 10:44:56 BST
# 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/vga-20180703-pull-request:
  vga: disable global_vmstate for 3.0+ machine types
  virtio-gpu: disable scanout when backing resource is destroyed
  virtio-gpu: update old resource too.
  virtio-gpu: tweak scanout disable.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	hw/display/qxl.c
#	hw/display/vga-isa-mm.c

hw/display/cirrus_vga.c

@@ -3048,7 +3048,8 @@ static void isa_cirrus_vga_realizefn(DeviceState *dev, Error **errp)
                    s->vram_size_mb);
         return;
     }
-    vga_common_init(s, OBJECT(dev), true);
+    s->global_vmstate = true;
+    vga_common_init(s, OBJECT(dev));
     cirrus_init_common(&d->cirrus_vga, OBJECT(dev), CIRRUS_ID_CLGD5430, 0,
                        isa_address_space(isadev),
                        isa_address_space_io(isadev));
@@ -3062,7 +3063,7 @@ static Property isa_cirrus_vga_properties[] = {
     DEFINE_PROP_UINT32("vgamem_mb", struct ISACirrusVGAState,
                        cirrus_vga.vga.vram_size_mb, 4),
     DEFINE_PROP_BOOL("blitter", struct ISACirrusVGAState,
-                       cirrus_vga.enable_blitter, true),
+                     cirrus_vga.enable_blitter, true),
     DEFINE_PROP_END_OF_LIST(),
 };
 
@@ -3105,7 +3106,7 @@ static void pci_cirrus_vga_realize(PCIDevice *dev, Error **errp)
          return;
      }
      /* setup VGA */
-     vga_common_init(&s->vga, OBJECT(dev), true);
+     vga_common_init(&s->vga, OBJECT(dev));
      cirrus_init_common(s, OBJECT(dev), device_id, 1, pci_address_space(dev),
                         pci_address_space_io(dev));
      s->vga.con = graphic_console_init(DEVICE(dev), 0, s->vga.hw_ops, &s->vga);
@@ -3134,6 +3135,8 @@ static Property pci_vga_cirrus_properties[] = {
                        cirrus_vga.vga.vram_size_mb, 4),
     DEFINE_PROP_BOOL("blitter", struct PCICirrusVGAState,
                      cirrus_vga.enable_blitter, true),
+    DEFINE_PROP_BOOL("global-vmstate", struct PCICirrusVGAState,
+                     cirrus_vga.vga.global_vmstate, false),
     DEFINE_PROP_END_OF_LIST(),
 };
 

hw/display/qxl.c

@@ -2168,7 +2168,7 @@ static void qxl_realize_primary(PCIDevice *dev, Error **errp)
     qxl_init_ramsize(qxl);
     vga->vbe_size = qxl->vgamem_size;
     vga->vram_size_mb = qxl->vga.vram_size / MiB;
-    vga_common_init(vga, OBJECT(dev), true);
+    vga_common_init(vga, OBJECT(dev));
     vga_init(vga, OBJECT(dev),
              pci_address_space(dev), pci_address_space_io(dev), false);
     portio_list_init(&qxl->vga_port_list, OBJECT(dev), qxl_vga_portio_list,
@@ -2408,6 +2408,7 @@ static Property qxl_properties[] = {
 #endif
         DEFINE_PROP_UINT32("xres", PCIQXLDevice, xres, 0),
         DEFINE_PROP_UINT32("yres", PCIQXLDevice, yres, 0),
+        DEFINE_PROP_BOOL("global-vmstate", PCIQXLDevice, vga.global_vmstate, false),
         DEFINE_PROP_END_OF_LIST(),
 };
 

hw/display/vga-isa-mm.c

@@ -132,7 +132,8 @@ int isa_vga_mm_init(hwaddr vram_base,
     s = g_malloc0(sizeof(*s));
 
     s->vga.vram_size_mb = VGA_RAM_SIZE / MiB;
-    vga_common_init(&s->vga, NULL, true);
+    s->vga.global_vmstate = true;
+    vga_common_init(&s->vga, NULL);
     vga_mm_init(s, vram_base, ctrl_base, it_shift, address_space);
 
     s->vga.con = graphic_console_init(NULL, 0, s->vga.hw_ops, s);

hw/display/vga-isa.c

@@ -58,7 +58,8 @@ static void vga_isa_realizefn(DeviceState *dev, Error **errp)
     MemoryRegion *vga_io_memory;
     const MemoryRegionPortio *vga_ports, *vbe_ports;
 
-    vga_common_init(s, OBJECT(dev), true);
+    s->global_vmstate = true;
+    vga_common_init(s, OBJECT(dev));
     s->legacy_address_space = isa_address_space(isadev);
     vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports);
     isa_register_portio_list(isadev, &d->portio_vga,

hw/display/vga-pci.c

@@ -222,7 +222,7 @@ static void pci_std_vga_realize(PCIDevice *dev, Error **errp)
     bool qext = false;
 
     /* vga + console init */
-    vga_common_init(s, OBJECT(dev), true);
+    vga_common_init(s, OBJECT(dev));
     vga_init(s, OBJECT(dev), pci_address_space(dev), pci_address_space_io(dev),
              true);
 
@@ -265,7 +265,7 @@ static void pci_secondary_vga_realize(PCIDevice *dev, Error **errp)
     bool qext = false;
 
     /* vga + console init */
-    vga_common_init(s, OBJECT(dev), false);
+    vga_common_init(s, OBJECT(dev));
     s->con = graphic_console_init(DEVICE(dev), 0, s->hw_ops, s);
 
     /* mmio bar */
@@ -308,6 +308,7 @@ static Property vga_pci_properties[] = {
     DEFINE_PROP_BIT("mmio", PCIVGAState, flags, PCI_VGA_FLAG_ENABLE_MMIO, true),
     DEFINE_PROP_BIT("qemu-extended-regs",
                     PCIVGAState, flags, PCI_VGA_FLAG_ENABLE_QEXT, true),
+    DEFINE_PROP_BOOL("global-vmstate", PCIVGAState, vga.global_vmstate, false),
     DEFINE_PROP_END_OF_LIST(),
 };
 

hw/display/vga.c

@@ -2164,7 +2164,7 @@ static inline uint32_t uint_clamp(uint32_t val, uint32_t vmin, uint32_t vmax)
     return val;
 }
 
-void vga_common_init(VGACommonState *s, Object *obj, bool global_vmstate)
+void vga_common_init(VGACommonState *s, Object *obj)
 {
     int i, j, v, b;
 
@@ -2203,7 +2203,7 @@ void vga_common_init(VGACommonState *s, Object *obj, bool global_vmstate)
     s->is_vbe_vmstate = 1;
     memory_region_init_ram_nomigrate(&s->vram, obj, "vga.vram", s->vram_size,
                            &error_fatal);
-    vmstate_register_ram(&s->vram, global_vmstate ? NULL : DEVICE(obj));
+    vmstate_register_ram(&s->vram, s->global_vmstate ? NULL : DEVICE(obj));
     xen_register_framebuffer(&s->vram);
     s->vram_ptr = memory_region_get_ram_ptr(&s->vram);
     s->get_bpp = vga_get_bpp;

hw/display/vga_int.h

@@ -133,6 +133,7 @@ typedef struct VGACommonState {
     bool full_update_gfx;
     bool big_endian_fb;
     bool default_endian_fb;
+    bool global_vmstate;
     /* hardware mouse cursor support */
     uint32_t invalidated_y_table[VGA_MAX_HEIGHT / 32];
     uint32_t hw_cursor_x;
@@ -157,7 +158,7 @@ static inline int c6_to_8(int v)
     return (v << 2) | (b << 1) | b;
 }
 
-void vga_common_init(VGACommonState *s, Object *obj, bool global_vmstate);
+void vga_common_init(VGACommonState *s, Object *obj);
 void vga_init(VGACommonState *s, Object *obj, MemoryRegion *address_space,
               MemoryRegion *address_space_io, bool init_vga_ports);
 MemoryRegion *vga_init_io(VGACommonState *s, Object *obj,

hw/display/virtio-gpu.c

@@ -400,9 +400,47 @@ static void virtio_gpu_resource_create_2d(VirtIOGPU *g,
     g->hostmem += res->hostmem;
 }
 
+static void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id)
+{
+    struct virtio_gpu_scanout *scanout = &g->scanout[scanout_id];
+    struct virtio_gpu_simple_resource *res;
+    DisplaySurface *ds = NULL;
+
+    if (scanout->resource_id == 0) {
+        return;
+    }
+
+    res = virtio_gpu_find_resource(g, scanout->resource_id);
+    if (res) {
+        res->scanout_bitmask &= ~(1 << scanout_id);
+    }
+
+    if (scanout_id == 0) {
+        /* primary head */
+        ds = qemu_create_message_surface(scanout->width  ?: 640,
+                                         scanout->height ?: 480,
+                                         "Guest disabled display.");
+    }
+    dpy_gfx_replace_surface(scanout->con, ds);
+    scanout->resource_id = 0;
+    scanout->ds = NULL;
+    scanout->width = 0;
+    scanout->height = 0;
+}
+
 static void virtio_gpu_resource_destroy(VirtIOGPU *g,
                                         struct virtio_gpu_simple_resource *res)
 {
+    int i;
+
+    if (res->scanout_bitmask) {
+        for (i = 0; i < g->conf.max_outputs; i++) {
+            if (res->scanout_bitmask & (1 << i)) {
+                virtio_gpu_disable_scanout(g, i);
+            }
+        }
+    }
+
     pixman_image_unref(res->image);
     virtio_gpu_cleanup_mapping(res);
     QTAILQ_REMOVE(&g->reslist, res, next);
@@ -563,7 +601,7 @@ static void virtio_unref_resource(pixman_image_t *image, void *data)
 static void virtio_gpu_set_scanout(VirtIOGPU *g,
                                    struct virtio_gpu_ctrl_command *cmd)
 {
-    struct virtio_gpu_simple_resource *res;
+    struct virtio_gpu_simple_resource *res, *ores;
     struct virtio_gpu_scanout *scanout;
     pixman_format_code_t format;
     uint32_t offset;
@@ -584,24 +622,7 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g,
 
     g->enable = 1;
     if (ss.resource_id == 0) {
-        scanout = &g->scanout[ss.scanout_id];
+        virtio_gpu_disable_scanout(g, ss.scanout_id);
-        if (scanout->resource_id) {
-            res = virtio_gpu_find_resource(g, scanout->resource_id);
-            if (res) {
-                res->scanout_bitmask &= ~(1 << ss.scanout_id);
-            }
-        }
-        if (ss.scanout_id == 0) {
-            qemu_log_mask(LOG_GUEST_ERROR,
-                          "%s: illegal scanout id specified %d",
-                          __func__, ss.scanout_id);
-            cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
-            return;
-        }
-        dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, NULL);
-        scanout->ds = NULL;
-        scanout->width = 0;
-        scanout->height = 0;
         return;
     }
 
@@ -654,6 +675,11 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g,
         dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, scanout->ds);
     }
 
+    ores = virtio_gpu_find_resource(g, scanout->resource_id);
+    if (ores) {
+        ores->scanout_bitmask &= ~(1 << ss.scanout_id);
+    }
+
     res->scanout_bitmask |= (1 << ss.scanout_id);
     scanout->resource_id = ss.resource_id;
     scanout->x = ss.r.x;

hw/display/virtio-vga.c

@@ -106,7 +106,7 @@ static void virtio_vga_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
 
     /* init vga compat bits */
     vga->vram_size_mb = 8;
-    vga_common_init(vga, OBJECT(vpci_dev), false);
+    vga_common_init(vga, OBJECT(vpci_dev));
     vga_init(vga, OBJECT(vpci_dev), pci_address_space(&vpci_dev->pci_dev),
              pci_address_space_io(&vpci_dev->pci_dev), true);
     pci_register_bar(&vpci_dev->pci_dev, 0,

hw/display/vmware_vga.c

@@ -1242,7 +1242,7 @@ static void vmsvga_init(DeviceState *dev, struct vmsvga_state_s *s,
                            &error_fatal);
     s->fifo_ptr = memory_region_get_ram_ptr(&s->fifo_ram);
 
-    vga_common_init(&s->vga, OBJECT(dev), true);
+    vga_common_init(&s->vga, OBJECT(dev));
     vga_init(&s->vga, OBJECT(dev), address_space, io, true);
     vmstate_register(NULL, 0, &vmstate_vga_common, &s->vga);
     s->new_depth = 32;
@@ -1322,6 +1322,8 @@ static void pci_vmsvga_realize(PCIDevice *dev, Error **errp)
 static Property vga_vmware_properties[] = {
     DEFINE_PROP_UINT32("vgamem_mb", struct pci_vmsvga_state_s,
                        chip.vga.vram_size_mb, 16),
+    DEFINE_PROP_BOOL("global-vmstate", struct pci_vmsvga_state_s,
+                     chip.vga.global_vmstate, false),
     DEFINE_PROP_END_OF_LIST(),
 };
 

include/hw/compat.h

@@ -10,6 +10,22 @@
         .driver   = "hda-audio",\
         .property = "use-timer",\
         .value    = "false",\
+    },{\
+        .driver   = "cirrus-vga",\
+        .property = "global-vmstate",\
+        .value    = "true",\
+    },{\
+        .driver   = "VGA",\
+        .property = "global-vmstate",\
+        .value    = "true",\
+    },{\
+        .driver   = "vmware-svga",\
+        .property = "global-vmstate",\
+        .value    = "true",\
+    },{\
+        .driver   = "qxl-vga",\
+        .property = "global-vmstate",\
+        .value    = "true",\
     },
 
 #define HW_COMPAT_2_11 \