[Qemu-devel] [PULL 0/4] Vga 20180703 patches

[Qemu-devel] [PULL 0/4] Vga 20180703 patches

[Gerd Hoffmann]

The following changes since commit ab08440a4ee09032d1a9cb22fdcab23bc7e1c656:

  Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20180702' into staging (2018-07-02 17:57:46 +0100)

are available in the git repository at:

  git://git.kraxel.org/qemu tags/vga-20180703-pull-request

for you to fetch changes up to 1fcfdc435a3e25ab9037f6f7b8ab4bdf89ba1269:

  vga: disable global_vmstate for 3.0+ machine types (2018-07-03 11:19:49 +0200)

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

----------------------------------------------------------------

Gerd Hoffmann (4):
  virtio-gpu: tweak scanout disable.
  virtio-gpu: update old resource too.
  virtio-gpu: disable scanout when backing resource is destroyed
  vga: disable global_vmstate for 3.0+ machine types

 hw/display/vga_int.h    |  3 ++-
 include/hw/compat.h     | 16 +++++++++++++
 hw/display/cirrus_vga.c |  9 ++++---
 hw/display/qxl.c        |  3 ++-
 hw/display/vga-isa-mm.c |  3 ++-
 hw/display/vga-isa.c    |  3 ++-
 hw/display/vga-pci.c    |  5 ++--
 hw/display/vga.c        |  4 ++--
 hw/display/virtio-gpu.c | 64 ++++++++++++++++++++++++++++++++++---------------
 hw/display/virtio-vga.c |  2 +-
 hw/display/vmware_vga.c |  4 +++-
 11 files changed, 84 insertions(+), 32 deletions(-)

-- 
2.9.3

[Qemu-devel] [PULL 1/4] virtio-gpu: tweak scanout disable.

[Gerd Hoffmann]

- Factor out the code to virtio_gpu_disable_scanout().
- Allow disable scanout 0, show a message then.
- Clear scanout->resource_id.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20180702162443.16796-2-kraxel@redhat.com
---
 hw/display/virtio-gpu.c | 47 +++++++++++++++++++++++++++++------------------
 1 file changed, 29 insertions(+), 18 deletions(-)

diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 2dd3c3481a..054ec73c0a 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -399,6 +399,34 @@ 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)
 {
@@ -583,24 +611,7 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g,
 
     g->enable = 1;
     if (ss.resource_id == 0) {
-        scanout = &g->scanout[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;
+        virtio_gpu_disable_scanout(g, ss.scanout_id);
         return;
     }
 
-- 
2.9.3

[Qemu-devel] [PULL 2/4] virtio-gpu: update old resource too.

[Gerd Hoffmann]

When switching scanout from one resource to another we must update the
scanout_bitmask field for both new (set bit) and old (clear bit)
resource.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20180702162443.16796-3-kraxel@redhat.com
---
 hw/display/virtio-gpu.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 054ec73c0a..336dc59007 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -590,7 +590,7 @@ 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;
@@ -664,6 +664,11 @@ 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;
-- 
2.9.3

[Qemu-devel] [PULL 3/4] virtio-gpu: disable scanout when backing resource is destroyed

[Gerd Hoffmann]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20180702162443.16796-4-kraxel@redhat.com
---
 hw/display/virtio-gpu.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 336dc59007..08cd567218 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -430,6 +430,16 @@ static void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id)
 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);
-- 
2.9.3

[Qemu-devel] [PULL 4/4] vga: disable global_vmstate for 3.0+ machine types

[Gerd Hoffmann]

Move global_vmstate from vga_common_init() parameter to VGACommonState
field.  Set global_vmstate to true for isa vga devices, so nothing
changes here.  virtio-vga and secondary-vga already set global_vmstate
to false so no change here either.  All other pci vga devices get a new
global-vmstate property, defaulting to false.  A compat property flips
it to true for older machine types.

With this in place you don't get a vmstate section naming conflict any
more when adding multiple pci vga devices to your vm.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20180702163345.17892-1-kraxel@redhat.com>
---
 hw/display/vga_int.h    |  3 ++-
 include/hw/compat.h     | 16 ++++++++++++++++
 hw/display/cirrus_vga.c |  9 ++++++---
 hw/display/qxl.c        |  3 ++-
 hw/display/vga-isa-mm.c |  3 ++-
 hw/display/vga-isa.c    |  3 ++-
 hw/display/vga-pci.c    |  5 +++--
 hw/display/vga.c        |  4 ++--
 hw/display/virtio-vga.c |  2 +-
 hw/display/vmware_vga.c |  4 +++-
 10 files changed, 39 insertions(+), 13 deletions(-)

diff --git a/hw/display/vga_int.h b/hw/display/vga_int.h
index f8fcf62a56..339661bc01 100644
--- a/hw/display/vga_int.h
+++ b/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,
diff --git a/include/hw/compat.h b/include/hw/compat.h
index 44d5964060..c08f4040bb 100644
--- a/include/hw/compat.h
+++ b/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 \
diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c
index 138ae961b9..1d050621f1 100644
--- a/hw/display/cirrus_vga.c
+++ b/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(),
 };
 
diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index a71714ccb4..3f740d7aa3 100644
--- a/hw/display/qxl.c
+++ b/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 >> 20;
-    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,
@@ -2410,6 +2410,7 @@ 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(),
 };
 
diff --git a/hw/display/vga-isa-mm.c b/hw/display/vga-isa-mm.c
index e887b45651..d2d6b32abf 100644
--- a/hw/display/vga-isa-mm.c
+++ b/hw/display/vga-isa-mm.c
@@ -131,7 +131,8 @@ int isa_vga_mm_init(hwaddr vram_base,
     s = g_malloc0(sizeof(*s));
 
     s->vga.vram_size_mb = VGA_RAM_SIZE >> 20;
-    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);
diff --git a/hw/display/vga-isa.c b/hw/display/vga-isa.c
index 469834add5..fa44242e0d 100644
--- a/hw/display/vga-isa.c
+++ b/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,
diff --git a/hw/display/vga-pci.c b/hw/display/vga-pci.c
index 1ea559762a..e9e62eac70 100644
--- a/hw/display/vga-pci.c
+++ b/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(),
 };
 
diff --git a/hw/display/vga.c b/hw/display/vga.c
index ed476e4e80..c82e6d240a 100644
--- a/hw/display/vga.c
+++ b/hw/display/vga.c
@@ -2163,7 +2163,7 @@ 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;
 
@@ -2202,7 +2202,7 @@ 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;
diff --git a/hw/display/virtio-vga.c b/hw/display/virtio-vga.c
index 97db6c3372..8d3d9e14a7 100644
--- a/hw/display/virtio-vga.c
+++ b/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,
diff --git a/hw/display/vmware_vga.c b/hw/display/vmware_vga.c
index bd3e8b3586..39f4d40801 100644
--- a/hw/display/vmware_vga.c
+++ b/hw/display/vmware_vga.c
@@ -1241,7 +1241,7 @@ 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;
@@ -1321,6 +1321,8 @@ 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(),
 };
 
-- 
2.9.3

Re: [Qemu-devel] [PULL 0/4] Vga 20180703 patches

[Peter Maydell]

On 3 July 2018 at 10:45, Gerd Hoffmann <kraxel@redhat.com> wrote:
> The following changes since commit ab08440a4ee09032d1a9cb22fdcab23bc7e1c656:
>
>   Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20180702' into staging (2018-07-02 17:57:46 +0100)
>
> are available in the git repository at:
>
>   git://git.kraxel.org/qemu tags/vga-20180703-pull-request
>
> for you to fetch changes up to 1fcfdc435a3e25ab9037f6f7b8ab4bdf89ba1269:
>
>   vga: disable global_vmstate for 3.0+ machine types (2018-07-03 11:19:49 +0200)
>
> ----------------------------------------------------------------
> vga: disable global_vmstate, virtio-gpu scanout tracking fixes.
>
> ----------------------------------------------------------------
>
> Gerd Hoffmann (4):
>   virtio-gpu: tweak scanout disable.
>   virtio-gpu: update old resource too.
>   virtio-gpu: disable scanout when backing resource is destroyed
>   vga: disable global_vmstate for 3.0+ machine types
>
>  hw/display/vga_int.h    |  3 ++-
>  include/hw/compat.h     | 16 +++++++++++++
>  hw/display/cirrus_vga.c |  9 ++++---
>  hw/display/qxl.c        |  3 ++-
>  hw/display/vga-isa-mm.c |  3 ++-
>  hw/display/vga-isa.c    |  3 ++-
>  hw/display/vga-pci.c    |  5 ++--
>  hw/display/vga.c        |  4 ++--
>  hw/display/virtio-gpu.c | 64 ++++++++++++++++++++++++++++++++++---------------
>  hw/display/virtio-vga.c |  2 +-
>  hw/display/vmware_vga.c |  4 +++-
>  11 files changed, 84 insertions(+), 32 deletions(-)

Applied, thanks.

-- PMM