[PULL v3 00/25] Pixman patches

[PULL v3 00/25] Pixman patches

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

The following changes since commit bb541a7068d2eee51a9abbe2dedcdf27298b1872:

  Merge tag 'pull-pa-20231106' of https://gitlab.com/rth7680/qemu into staging (2023-11-07 15:01:17 +0800)

are available in the Git repository at:

  https://gitlab.com/marcandre.lureau/qemu.git tags/pixman-pull-request

for you to fetch changes up to d017f28a2ee082f472ed69fedf0435b468000e92:

  build-sys: make pixman actually optional (2023-11-07 14:04:25 +0400)

----------------------------------------------------------------
Make Pixman an optional dependency

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

Marc-André Lureau (25):
  build-sys: add a "pixman" feature
  build-sys: drop needless warning pragmas for old pixman
  ui: compile out some qemu-pixman functions when !PIXMAN
  ui: add pixman-minimal.h
  vl: drop needless -spice checks
  qemu-options: define -vnc only #ifdef CONFIG_VNC
  vl: simplify display_remote logic
  vl: move display early init before default devices
  ui/console: allow to override the default VC
  ui/vc: console-vc requires PIXMAN
  qmp/hmp: disable screendump if PIXMAN is missing
  virtio-gpu: replace PIXMAN for region/rect test
  ui/console: when PIXMAN is unavailable, don't draw placeholder msg
  vhost-user-gpu: skip VHOST_USER_GPU_UPDATE when !PIXMAN
  ui/gl: opengl doesn't require PIXMAN
  ui/vnc: VNC requires PIXMAN
  ui/spice: SPICE/QXL requires PIXMAN
  ui/gtk: -display gtk requires PIXMAN
  ui/dbus: do not require PIXMAN
  arm/kconfig: XLNX_ZYNQMP_ARM depends on PIXMAN
  hw/arm: XLNX_VERSAL depends on XLNX_CSU_DMA
  hw/sm501: allow compiling without PIXMAN
  hw/mips: FULOONG depends on VT82C686
  hw/display/ati: allow compiling without PIXMAN
  build-sys: make pixman actually optional

 meson.build                   |  25 ++++-
 qapi/ui.json                  |   3 +-
 include/ui/console.h          |   2 +
 include/ui/pixman-minimal.h   | 195 ++++++++++++++++++++++++++++++++++
 include/ui/qemu-pixman.h      |  15 +--
 include/ui/rect.h             |  59 ++++++++++
 hw/display/ati.c              |  15 ++-
 hw/display/ati_2d.c           |  10 +-
 hw/display/sm501.c            |  45 +++++---
 hw/display/vhost-user-gpu.c   |   2 +
 hw/display/virtio-gpu.c       |  30 ++----
 system/vl.c                   |  84 ++++++++-------
 ui/console-vc-stubs.c         |  33 ++++++
 ui/console.c                  |  19 ++++
 ui/dbus-listener.c            |  90 +++++++++++-----
 ui/qemu-pixman.c              |   6 ++
 ui/ui-hmp-cmds.c              |   2 +
 ui/ui-qmp-cmds.c              |   2 +
 ui/vnc-stubs.c                |  12 ---
 Kconfig.host                  |   3 +
 hmp-commands.hx               |   2 +
 hw/arm/Kconfig                |   4 +-
 hw/display/Kconfig            |   7 +-
 hw/display/meson.build        |   4 +-
 hw/mips/Kconfig               |   1 +
 meson_options.txt             |   2 +
 qemu-options.hx               |   2 +
 scripts/meson-buildoptions.sh |   3 +
 ui/meson.build                |  22 ++--
 29 files changed, 560 insertions(+), 139 deletions(-)
 create mode 100644 include/ui/pixman-minimal.h
 create mode 100644 include/ui/rect.h
 create mode 100644 ui/console-vc-stubs.c

-- 
2.41.0

[PULL v3 01/25] build-sys: add a "pixman" feature

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

For now, pixman is mandatory, but we set config_host.h and Kconfig.
Once compilation is fixed, "pixman" will become actually optional.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 meson.build                   | 10 ++++++++--
 include/ui/qemu-pixman.h      |  2 ++
 Kconfig.host                  |  3 +++
 meson_options.txt             |  2 ++
 scripts/meson-buildoptions.sh |  3 +++
 5 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/meson.build b/meson.build
index 51a51075db..505cc591b9 100644
--- a/meson.build
+++ b/meson.build
@@ -813,10 +813,14 @@ if 'ust' in get_option('trace_backends')
                      method: 'pkg-config')
 endif
 pixman = not_found
-if have_system or have_tools
-  pixman = dependency('pixman-1', required: have_system, version:'>=0.21.8',
+if not get_option('pixman').auto() or have_system or have_tools
+  pixman = dependency('pixman-1', required: get_option('pixman'), version:'>=0.21.8',
                       method: 'pkg-config')
 endif
+if not pixman.found() and (have_system or have_tools)
+  error('FIXME: pixman is currently required')
+endif
+
 zlib = dependency('zlib', required: true)
 
 libaio = not_found
@@ -2149,6 +2153,7 @@ config_host_data.set('CONFIG_SECCOMP', seccomp.found())
 if seccomp.found()
   config_host_data.set('CONFIG_SECCOMP_SYSRAWRC', seccomp_has_sysrawrc)
 endif
+config_host_data.set('CONFIG_PIXMAN', pixman.found())
 config_host_data.set('CONFIG_SNAPPY', snappy.found())
 config_host_data.set('CONFIG_SOLARIS', targetos == 'sunos')
 if get_option('tcg').allowed()
@@ -2868,6 +2873,7 @@ have_ivshmem = config_host_data.get('CONFIG_EVENTFD')
 host_kconfig = \
   (get_option('fuzzing') ? ['CONFIG_FUZZ=y'] : []) + \
   (have_tpm ? ['CONFIG_TPM=y'] : []) + \
+  (pixman.found() ? ['CONFIG_PIXMAN=y'] : []) + \
   (spice.found() ? ['CONFIG_SPICE=y'] : []) + \
   (have_ivshmem ? ['CONFIG_IVSHMEM=y'] : []) + \
   (opengl.found() ? ['CONFIG_OPENGL=y'] : []) + \
diff --git a/include/ui/qemu-pixman.h b/include/ui/qemu-pixman.h
index e587c48b1f..d37feb5e3c 100644
--- a/include/ui/qemu-pixman.h
+++ b/include/ui/qemu-pixman.h
@@ -6,11 +6,13 @@
 #ifndef QEMU_PIXMAN_H
 #define QEMU_PIXMAN_H
 
+#ifdef CONFIG_PIXMAN
 /* pixman-0.16.0 headers have a redundant declaration */
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wredundant-decls"
 #include <pixman.h>
 #pragma GCC diagnostic pop
+#endif
 
 /*
  * pixman image formats are defined to be native endian,
diff --git a/Kconfig.host b/Kconfig.host
index 2ee71578f3..f496475f8e 100644
--- a/Kconfig.host
+++ b/Kconfig.host
@@ -11,6 +11,9 @@ config OPENGL
 config X11
     bool
 
+config PIXMAN
+    bool
+
 config SPICE
     bool
 
diff --git a/meson_options.txt b/meson_options.txt
index 5c212fcd45..c9baeda639 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -226,6 +226,8 @@ option('l2tpv3', type : 'feature', value : 'auto',
        description: 'l2tpv3 network backend support')
 option('netmap', type : 'feature', value : 'auto',
        description: 'netmap network backend support')
+option('pixman', type : 'feature', value : 'auto',
+       description: 'pixman support')
 option('slirp', type: 'feature', value: 'auto',
        description: 'libslirp user mode network backend support')
 option('vde', type : 'feature', value : 'auto',
diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
index e9d6d39279..680fa3f581 100644
--- a/scripts/meson-buildoptions.sh
+++ b/scripts/meson-buildoptions.sh
@@ -160,6 +160,7 @@ meson_options_help() {
   printf "%s\n" '  pa              PulseAudio sound support'
   printf "%s\n" '  parallels       parallels image format support'
   printf "%s\n" '  pipewire        PipeWire sound support'
+  printf "%s\n" '  pixman          pixman support'
   printf "%s\n" '  plugins         TCG plugins via shared library loading'
   printf "%s\n" '  png             PNG support with libpng'
   printf "%s\n" '  pvrdma          Enable PVRDMA support'
@@ -419,6 +420,8 @@ _meson_option_parse() {
     --disable-parallels) printf "%s" -Dparallels=disabled ;;
     --enable-pipewire) printf "%s" -Dpipewire=enabled ;;
     --disable-pipewire) printf "%s" -Dpipewire=disabled ;;
+    --enable-pixman) printf "%s" -Dpixman=enabled ;;
+    --disable-pixman) printf "%s" -Dpixman=disabled ;;
     --with-pkgversion=*) quote_sh "-Dpkgversion=$2" ;;
     --enable-plugins) printf "%s" -Dplugins=true ;;
     --disable-plugins) printf "%s" -Dplugins=false ;;
-- 
2.41.0

[PULL v3 02/25] build-sys: drop needless warning pragmas for old pixman

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Since commit 236f282c1c7 ("configure: check for pixman-1 version"), QEMU
requires >= 0.21.8.

Suggested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/ui/qemu-pixman.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/include/ui/qemu-pixman.h b/include/ui/qemu-pixman.h
index d37feb5e3c..4bfa8fae0c 100644
--- a/include/ui/qemu-pixman.h
+++ b/include/ui/qemu-pixman.h
@@ -7,11 +7,7 @@
 #define QEMU_PIXMAN_H
 
 #ifdef CONFIG_PIXMAN
-/* pixman-0.16.0 headers have a redundant declaration */
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wredundant-decls"
 #include <pixman.h>
-#pragma GCC diagnostic pop
 #endif
 
 /*
-- 
2.41.0

[PULL v3 03/25] ui: compile out some qemu-pixman functions when !PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Those functions require the PIXMAN library.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/ui/qemu-pixman.h | 7 +++++--
 ui/qemu-pixman.c         | 6 ++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/include/ui/qemu-pixman.h b/include/ui/qemu-pixman.h
index 4bfa8fae0c..c140cd84b6 100644
--- a/include/ui/qemu-pixman.h
+++ b/include/ui/qemu-pixman.h
@@ -72,17 +72,17 @@ pixman_format_code_t qemu_default_pixman_format(int bpp, bool native_endian);
 pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format);
 uint32_t qemu_pixman_to_drm_format(pixman_format_code_t pixman);
 int qemu_pixman_get_type(int rshift, int gshift, int bshift);
-pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf);
 bool qemu_pixman_check_format(DisplayChangeListener *dcl,
                               pixman_format_code_t format);
 
+#ifdef CONFIG_PIXMAN
+pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf);
 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
                                            int width);
 void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
                               int width, int x, int y);
 pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
                                           pixman_image_t *image);
-void qemu_pixman_image_unref(pixman_image_t *image);
 
 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
                                                unsigned int ch);
@@ -91,6 +91,9 @@ void qemu_pixman_glyph_render(pixman_image_t *glyph,
                               pixman_color_t *fgcol,
                               pixman_color_t *bgcol,
                               int x, int y, int cw, int ch);
+#endif
+
+void qemu_pixman_image_unref(pixman_image_t *image);
 
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(pixman_image_t, qemu_pixman_image_unref)
 
diff --git a/ui/qemu-pixman.c b/ui/qemu-pixman.c
index b43ec38bf0..5ca55dd199 100644
--- a/ui/qemu-pixman.c
+++ b/ui/qemu-pixman.c
@@ -145,6 +145,7 @@ int qemu_pixman_get_type(int rshift, int gshift, int bshift)
     return type;
 }
 
+#ifdef CONFIG_PIXMAN
 pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
 {
     pixman_format_code_t format;
@@ -158,6 +159,7 @@ pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
     }
     return format;
 }
+#endif
 
 /*
  * Return true for known-good pixman conversions.
@@ -186,6 +188,7 @@ bool qemu_pixman_check_format(DisplayChangeListener *dcl,
     }
 }
 
+#ifdef CONFIG_PIXMAN
 pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
                                            int width)
 {
@@ -211,6 +214,7 @@ pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
                                     NULL,
                                     pixman_image_get_stride(image));
 }
+#endif
 
 void qemu_pixman_image_unref(pixman_image_t *image)
 {
@@ -220,6 +224,7 @@ void qemu_pixman_image_unref(pixman_image_t *image)
     pixman_image_unref(image);
 }
 
+#ifdef CONFIG_PIXMAN
 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
                                                unsigned int ch)
 {
@@ -262,3 +267,4 @@ void qemu_pixman_glyph_render(pixman_image_t *glyph,
     pixman_image_unref(ifg);
     pixman_image_unref(ibg);
 }
+#endif /* CONFIG_PIXMAN */
-- 
2.41.0

[PULL v3 04/25] ui: add pixman-minimal.h

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

This is a tiny subset of PIXMAN API that is used pervasively in QEMU
codebase to manage images and identify the underlying format.

It doesn't seems worth to wrap this in a QEMU-specific API.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
---
 include/ui/pixman-minimal.h | 195 ++++++++++++++++++++++++++++++++++++
 include/ui/qemu-pixman.h    |   2 +
 2 files changed, 197 insertions(+)
 create mode 100644 include/ui/pixman-minimal.h

diff --git a/include/ui/pixman-minimal.h b/include/ui/pixman-minimal.h
new file mode 100644
index 0000000000..efcf570c9e
--- /dev/null
+++ b/include/ui/pixman-minimal.h
@@ -0,0 +1,195 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Tiny subset of PIXMAN API commonly used by QEMU.
+ *
+ * Copyright 1987, 1988, 1989, 1998  The Open Group
+ * Copyright 1987, 1988, 1989 Digital Equipment Corporation
+ * Copyright 1999, 2004, 2008 Keith Packard
+ * Copyright 2000 SuSE, Inc.
+ * Copyright 2000 Keith Packard, member of The XFree86 Project, Inc.
+ * Copyright 2004, 2005, 2007, 2008, 2009, 2010 Red Hat, Inc.
+ * Copyright 2004 Nicholas Miell
+ * Copyright 2005 Lars Knoll & Zack Rusin, Trolltech
+ * Copyright 2005 Trolltech AS
+ * Copyright 2007 Luca Barbato
+ * Copyright 2008 Aaron Plattner, NVIDIA Corporation
+ * Copyright 2008 Rodrigo Kumpera
+ * Copyright 2008 André Tupinambá
+ * Copyright 2008 Mozilla Corporation
+ * Copyright 2008 Frederic Plourde
+ * Copyright 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2009, 2010 Nokia Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef PIXMAN_MINIMAL_H
+#define PIXMAN_MINIMAL_H
+
+#define PIXMAN_TYPE_OTHER       0
+#define PIXMAN_TYPE_ARGB        2
+#define PIXMAN_TYPE_ABGR        3
+#define PIXMAN_TYPE_BGRA        8
+#define PIXMAN_TYPE_RGBA        9
+
+#define PIXMAN_FORMAT(bpp, type, a, r, g, b) (((bpp) << 24) |   \
+                                              ((type) << 16) |  \
+                                              ((a) << 12) |     \
+                                              ((r) << 8) |      \
+                                              ((g) << 4) |      \
+                                              ((b)))
+
+#define PIXMAN_FORMAT_RESHIFT(val, ofs, num)                            \
+        (((val >> (ofs)) & ((1 << (num)) - 1)) << ((val >> 22) & 3))
+
+#define PIXMAN_FORMAT_BPP(f)    PIXMAN_FORMAT_RESHIFT(f, 24, 8)
+#define PIXMAN_FORMAT_TYPE(f)   (((f) >> 16) & 0x3f)
+#define PIXMAN_FORMAT_A(f)      PIXMAN_FORMAT_RESHIFT(f, 12, 4)
+#define PIXMAN_FORMAT_R(f)      PIXMAN_FORMAT_RESHIFT(f, 8, 4)
+#define PIXMAN_FORMAT_G(f)      PIXMAN_FORMAT_RESHIFT(f, 4, 4)
+#define PIXMAN_FORMAT_B(f)      PIXMAN_FORMAT_RESHIFT(f, 0, 4)
+#define PIXMAN_FORMAT_DEPTH(f)  (PIXMAN_FORMAT_A(f) +   \
+                                 PIXMAN_FORMAT_R(f) +   \
+                                 PIXMAN_FORMAT_G(f) +   \
+                                 PIXMAN_FORMAT_B(f))
+
+typedef enum {
+    /* 32bpp formats */
+    PIXMAN_a8r8g8b8 =    PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 8, 8, 8, 8),
+    PIXMAN_x8r8g8b8 =    PIXMAN_FORMAT(32, PIXMAN_TYPE_ARGB, 0, 8, 8, 8),
+    PIXMAN_a8b8g8r8 =    PIXMAN_FORMAT(32, PIXMAN_TYPE_ABGR, 8, 8, 8, 8),
+    PIXMAN_x8b8g8r8 =    PIXMAN_FORMAT(32, PIXMAN_TYPE_ABGR, 0, 8, 8, 8),
+    PIXMAN_b8g8r8a8 =    PIXMAN_FORMAT(32, PIXMAN_TYPE_BGRA, 8, 8, 8, 8),
+    PIXMAN_b8g8r8x8 =    PIXMAN_FORMAT(32, PIXMAN_TYPE_BGRA, 0, 8, 8, 8),
+    PIXMAN_r8g8b8a8 =    PIXMAN_FORMAT(32, PIXMAN_TYPE_RGBA, 8, 8, 8, 8),
+    PIXMAN_r8g8b8x8 =    PIXMAN_FORMAT(32, PIXMAN_TYPE_RGBA, 0, 8, 8, 8),
+    /* 24bpp formats */
+    PIXMAN_r8g8b8 =      PIXMAN_FORMAT(24, PIXMAN_TYPE_ARGB, 0, 8, 8, 8),
+    PIXMAN_b8g8r8 =      PIXMAN_FORMAT(24, PIXMAN_TYPE_ABGR, 0, 8, 8, 8),
+    /* 16bpp formats */
+    PIXMAN_r5g6b5 =      PIXMAN_FORMAT(16, PIXMAN_TYPE_ARGB, 0, 5, 6, 5),
+    PIXMAN_a1r5g5b5 =    PIXMAN_FORMAT(16, PIXMAN_TYPE_ARGB, 1, 5, 5, 5),
+    PIXMAN_x1r5g5b5 =    PIXMAN_FORMAT(16, PIXMAN_TYPE_ARGB, 0, 5, 5, 5),
+} pixman_format_code_t;
+
+typedef struct pixman_image pixman_image_t;
+
+typedef void (*pixman_image_destroy_func_t)(pixman_image_t *image, void *data);
+
+struct pixman_image {
+    int ref_count;
+    pixman_format_code_t format;
+    int width;
+    int height;
+    int stride;
+    uint32_t *data;
+    uint32_t *free_me;
+    pixman_image_destroy_func_t destroy_func;
+    void *destroy_data;
+};
+
+typedef struct pixman_color {
+    uint16_t    red;
+    uint16_t    green;
+    uint16_t    blue;
+    uint16_t    alpha;
+} pixman_color_t;
+
+static inline pixman_image_t *pixman_image_create_bits(pixman_format_code_t format,
+                                                       int width,
+                                                       int height,
+                                                       uint32_t *bits,
+                                                       int rowstride_bytes)
+{
+    pixman_image_t *i = g_new0(pixman_image_t, 1);
+
+    i->width = width;
+    i->height = height;
+    i->stride = rowstride_bytes ?: width * DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8);
+    i->format = format;
+    if (bits) {
+        i->data = bits;
+    } else {
+        i->free_me = i->data = g_malloc0(rowstride_bytes * height);
+    }
+    i->ref_count = 1;
+
+    return i;
+}
+
+static inline pixman_image_t *pixman_image_ref(pixman_image_t *i)
+{
+    i->ref_count++;
+    return i;
+}
+
+static inline bool pixman_image_unref(pixman_image_t *i)
+{
+    i->ref_count--;
+
+    if (i->ref_count == 0) {
+        if (i->destroy_func) {
+            i->destroy_func(i, i->destroy_data);
+        }
+        g_free(i->free_me);
+        g_free(i);
+
+        return true;
+    }
+
+    return false;
+}
+
+static inline void pixman_image_set_destroy_function(pixman_image_t *i,
+                                                     pixman_image_destroy_func_t func,
+                                                     void *data)
+
+{
+    i->destroy_func = func;
+    i->destroy_data = data;
+}
+
+static inline uint32_t *pixman_image_get_data(pixman_image_t *i)
+{
+    return i->data;
+}
+
+static inline int pixman_image_get_height(pixman_image_t *i)
+{
+    return i->height;
+}
+
+static inline int pixman_image_get_width(pixman_image_t *i)
+{
+    return i->width;
+}
+
+static inline int pixman_image_get_stride(pixman_image_t *i)
+{
+    return i->stride;
+}
+
+static inline pixman_format_code_t pixman_image_get_format(pixman_image_t *i)
+{
+    return i->format;
+}
+
+#endif /* PIXMAN_MINIMAL_H */
diff --git a/include/ui/qemu-pixman.h b/include/ui/qemu-pixman.h
index c140cd84b6..ef13a8210c 100644
--- a/include/ui/qemu-pixman.h
+++ b/include/ui/qemu-pixman.h
@@ -8,6 +8,8 @@
 
 #ifdef CONFIG_PIXMAN
 #include <pixman.h>
+#else
+#include "pixman-minimal.h"
 #endif
 
 /*
-- 
2.41.0

[PULL v3 05/25] vl: drop needless -spice checks

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Since commit 5324e3e958e ("qemu-options: define -spice only #ifdef
CONFIG_SPICE"), it is unnecessary to check at runtime for "-spice"
option.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 system/vl.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/system/vl.c b/system/vl.c
index 3fb569254a..fb0389e4d0 100644
--- a/system/vl.c
+++ b/system/vl.c
@@ -3475,12 +3475,7 @@ void qemu_init(int argc, char **argv)
                 break;
 #ifdef CONFIG_SPICE
             case QEMU_OPTION_spice:
-                olist = qemu_find_opts_err("spice", NULL);
-                if (!olist) {
-                    error_report("spice support is disabled");
-                    exit(1);
-                }
-                opts = qemu_opts_parse_noisily(olist, optarg, false);
+                opts = qemu_opts_parse_noisily(qemu_find_opts("spice"), optarg, false);
                 if (!opts) {
                     exit(1);
                 }
-- 
2.41.0

[PULL v3 06/25] qemu-options: define -vnc only #ifdef CONFIG_VNC

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 system/vl.c     | 13 +++++++++----
 ui/vnc-stubs.c  | 12 ------------
 qemu-options.hx |  2 ++
 3 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/system/vl.c b/system/vl.c
index fb0389e4d0..19aef762e4 100644
--- a/system/vl.c
+++ b/system/vl.c
@@ -1095,13 +1095,14 @@ DisplayOptions *qmp_query_display_options(Error **errp)
 
 static void parse_display(const char *p)
 {
-    const char *opts;
-
     if (is_help_option(p)) {
         qemu_display_help();
         exit(0);
     }
 
+#ifdef CONFIG_VNC
+    const char *opts;
+
     if (strstart(p, "vnc", &opts)) {
         /*
          * vnc isn't a (local) DisplayType but a protocol for remote
@@ -1113,9 +1114,11 @@ static void parse_display(const char *p)
             error_report("VNC requires a display argument vnc=<display>");
             exit(1);
         }
-    } else {
-        parse_display_qapi(p);
+        return;
     }
+#endif
+
+    parse_display_qapi(p);
 }
 
 static inline bool nonempty_str(const char *str)
@@ -3344,9 +3347,11 @@ void qemu_init(int argc, char **argv)
                 machine_parse_property_opt(qemu_find_opts("smp-opts"),
                                            "smp", optarg);
                 break;
+#ifdef CONFIG_VNC
             case QEMU_OPTION_vnc:
                 vnc_parse(optarg);
                 break;
+#endif
             case QEMU_OPTION_no_acpi:
                 warn_report("-no-acpi is deprecated, use '-machine acpi=off' instead");
                 qdict_put_str(machine_opts_dict, "acpi", "off");
diff --git a/ui/vnc-stubs.c b/ui/vnc-stubs.c
index b4eb3ce718..a96bc86236 100644
--- a/ui/vnc-stubs.c
+++ b/ui/vnc-stubs.c
@@ -10,15 +10,3 @@ int vnc_display_pw_expire(const char *id, time_t expires)
 {
     return -ENODEV;
 };
-void vnc_parse(const char *str)
-{
-    if (strcmp(str, "none") == 0) {
-        return;
-    }
-    error_setg(&error_fatal, "VNC support is disabled");
-}
-int vnc_init_func(void *opaque, QemuOpts *opts, Error **errp)
-{
-    error_setg(errp, "VNC support is disabled");
-    return -1;
-}
diff --git a/qemu-options.hx b/qemu-options.hx
index 7809036d8c..5b6d16ed58 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2428,8 +2428,10 @@ SRST
     OBP.
 ERST
 
+#ifdef CONFIG_VNC
 DEF("vnc", HAS_ARG, QEMU_OPTION_vnc ,
     "-vnc <display>  shorthand for -display vnc=<display>\n", QEMU_ARCH_ALL)
+#endif
 SRST
 ``-vnc display[,option[,option[,...]]]``
     Normally, if QEMU is compiled with graphical window support, it
-- 
2.41.0

[PULL v3 07/25] vl: simplify display_remote logic

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Bump the display_remote variable when the -vnc option is parsed, just
like -spice.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 system/vl.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/system/vl.c b/system/vl.c
index 19aef762e4..e9819408df 100644
--- a/system/vl.c
+++ b/system/vl.c
@@ -1401,11 +1401,6 @@ static void qemu_create_default_devices(void)
 #endif
     }
 
-#if defined(CONFIG_VNC)
-    if (!QTAILQ_EMPTY(&(qemu_find_opts("vnc")->head))) {
-        display_remote++;
-    }
-#endif
     if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
         if (!qemu_display_find_default(&dpy)) {
             dpy.type = DISPLAY_TYPE_NONE;
@@ -3350,6 +3345,7 @@ void qemu_init(int argc, char **argv)
 #ifdef CONFIG_VNC
             case QEMU_OPTION_vnc:
                 vnc_parse(optarg);
+                display_remote++;
                 break;
 #endif
             case QEMU_OPTION_no_acpi:
-- 
2.41.0

[PULL v3 08/25] vl: move display early init before default devices

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

The next commit needs to have the display registered itself before
creating the default VCs.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 system/vl.c | 31 ++++++++++++++++++-------------
 1 file changed, 18 insertions(+), 13 deletions(-)

diff --git a/system/vl.c b/system/vl.c
index e9819408df..cf46e438cc 100644
--- a/system/vl.c
+++ b/system/vl.c
@@ -1352,6 +1352,23 @@ static void qemu_disable_default_devices(void)
     }
 }
 
+static void qemu_setup_display(void)
+{
+    if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
+        if (!qemu_display_find_default(&dpy)) {
+            dpy.type = DISPLAY_TYPE_NONE;
+#if defined(CONFIG_VNC)
+            vnc_parse("localhost:0,to=99,id=default");
+#endif
+        }
+    }
+    if (dpy.type == DISPLAY_TYPE_DEFAULT) {
+        dpy.type = DISPLAY_TYPE_NONE;
+    }
+
+    qemu_display_early_init(&dpy);
+}
+
 static void qemu_create_default_devices(void)
 {
     MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
@@ -1401,18 +1418,6 @@ static void qemu_create_default_devices(void)
 #endif
     }
 
-    if (dpy.type == DISPLAY_TYPE_DEFAULT && !display_remote) {
-        if (!qemu_display_find_default(&dpy)) {
-            dpy.type = DISPLAY_TYPE_NONE;
-#if defined(CONFIG_VNC)
-            vnc_parse("localhost:0,to=99,id=default");
-#endif
-        }
-    }
-    if (dpy.type == DISPLAY_TYPE_DEFAULT) {
-        dpy.type = DISPLAY_TYPE_NONE;
-    }
-
     /* If no default VGA is requested, the default is "none".  */
     if (default_vga) {
         vga_model = get_default_vga_model(machine_class);
@@ -1937,7 +1942,6 @@ static void qemu_create_early_backends(void)
                      "ignoring option");
     }
 
-    qemu_display_early_init(&dpy);
     qemu_console_early_init();
 
     if (dpy.has_gl && dpy.gl != DISPLAYGL_MODE_OFF && display_opengl == 0) {
@@ -3666,6 +3670,7 @@ void qemu_init(int argc, char **argv)
     suspend_mux_open();
 
     qemu_disable_default_devices();
+    qemu_setup_display();
     qemu_create_default_devices();
     qemu_create_early_backends();
 
-- 
2.41.0

[PULL v3 09/25] ui/console: allow to override the default VC

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

If a display is backed by a specialized VC, allow to override the
default "vc:80Cx24C".

As suggested by Paolo, if the display doesn't implement a VC (get_vc()
returns NULL), use a fallback that will use a muxed console on stdio.

This changes the behaviour of "qemu -display none", to create a muxed
serial/monitor by default (on TTY & not daemonized).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 include/ui/console.h |  2 ++
 system/vl.c          | 27 +++++++++++++++++----------
 ui/console.c         | 14 ++++++++++++++
 3 files changed, 33 insertions(+), 10 deletions(-)

diff --git a/include/ui/console.h b/include/ui/console.h
index acb61a7f15..a4a49ffc64 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -462,12 +462,14 @@ struct QemuDisplay {
     DisplayType type;
     void (*early_init)(DisplayOptions *opts);
     void (*init)(DisplayState *ds, DisplayOptions *opts);
+    const char *vc;
 };
 
 void qemu_display_register(QemuDisplay *ui);
 bool qemu_display_find_default(DisplayOptions *opts);
 void qemu_display_early_init(DisplayOptions *opts);
 void qemu_display_init(DisplayState *ds, DisplayOptions *opts);
+const char *qemu_display_get_vc(DisplayOptions *opts);
 void qemu_display_help(void);
 
 /* vnc.c */
diff --git a/system/vl.c b/system/vl.c
index cf46e438cc..bd7fad770b 100644
--- a/system/vl.c
+++ b/system/vl.c
@@ -1372,6 +1372,7 @@ static void qemu_setup_display(void)
 static void qemu_create_default_devices(void)
 {
     MachineClass *machine_class = MACHINE_GET_CLASS(current_machine);
+    const char *vc = qemu_display_get_vc(&dpy);
 
     if (is_daemonized()) {
         /* According to documentation and historically, -nographic redirects
@@ -1390,24 +1391,30 @@ static void qemu_create_default_devices(void)
         }
     }
 
-    if (nographic) {
-        if (default_parallel)
+    if (nographic || (!vc && !is_daemonized() && isatty(STDOUT_FILENO))) {
+        if (default_parallel) {
             add_device_config(DEV_PARALLEL, "null");
+        }
         if (default_serial && default_monitor) {
             add_device_config(DEV_SERIAL, "mon:stdio");
         } else {
-            if (default_serial)
+            if (default_serial) {
                 add_device_config(DEV_SERIAL, "stdio");
-            if (default_monitor)
+            }
+            if (default_monitor) {
                 monitor_parse("stdio", "readline", false);
+            }
         }
     } else {
-        if (default_serial)
-            add_device_config(DEV_SERIAL, "vc:80Cx24C");
-        if (default_parallel)
-            add_device_config(DEV_PARALLEL, "vc:80Cx24C");
-        if (default_monitor)
-            monitor_parse("vc:80Cx24C", "readline", false);
+        if (default_serial) {
+            add_device_config(DEV_SERIAL, vc ?: "null");
+        }
+        if (default_parallel) {
+            add_device_config(DEV_PARALLEL, vc ?: "null");
+        }
+        if (default_monitor && vc) {
+            monitor_parse(vc, "readline", false);
+        }
     }
 
     if (default_net) {
diff --git a/ui/console.c b/ui/console.c
index 8ee66d10c5..a758ed62ad 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1675,6 +1675,20 @@ void qemu_display_init(DisplayState *ds, DisplayOptions *opts)
     dpys[opts->type]->init(ds, opts);
 }
 
+const char *qemu_display_get_vc(DisplayOptions *opts)
+{
+    assert(opts->type < DISPLAY_TYPE__MAX);
+    if (opts->type == DISPLAY_TYPE_NONE) {
+        return NULL;
+    }
+    assert(dpys[opts->type] != NULL);
+    if (dpys[opts->type]->vc) {
+        return dpys[opts->type]->vc;
+    } else {
+        return "vc:80Cx24C";
+    }
+}
+
 void qemu_display_help(void)
 {
     int idx;
-- 
2.41.0

[PULL v3 10/25] ui/vc: console-vc requires PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Add stubs for the fallback paths.

get_vc() now returns NULL by default if !PIXMAN.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 ui/console-vc-stubs.c | 33 +++++++++++++++++++++++++++++++++
 ui/console.c          |  3 +++
 ui/meson.build        |  2 +-
 3 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 ui/console-vc-stubs.c

diff --git a/ui/console-vc-stubs.c b/ui/console-vc-stubs.c
new file mode 100644
index 0000000000..2afc52329f
--- /dev/null
+++ b/ui/console-vc-stubs.c
@@ -0,0 +1,33 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ * QEMU VC stubs
+ */
+#include "qemu/osdep.h"
+
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+#include "qemu/option.h"
+#include "chardev/char.h"
+#include "ui/console-priv.h"
+
+void qemu_text_console_select(QemuTextConsole *c)
+{
+}
+
+const char *
+qemu_text_console_get_label(QemuTextConsole *c)
+{
+    return NULL;
+}
+
+void qemu_text_console_update_cursor(void)
+{
+}
+
+void qemu_text_console_handle_keysym(QemuTextConsole *s, int keysym)
+{
+}
+
+void qemu_console_early_init(void)
+{
+}
diff --git a/ui/console.c b/ui/console.c
index a758ed62ad..a72c495b5a 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1685,8 +1685,11 @@ const char *qemu_display_get_vc(DisplayOptions *opts)
     if (dpys[opts->type]->vc) {
         return dpys[opts->type]->vc;
     } else {
+#ifdef CONFIG_PIXMAN
         return "vc:80Cx24C";
+#endif
     }
+    return NULL;
 }
 
 void qemu_display_help(void)
diff --git a/ui/meson.build b/ui/meson.build
index 0a1e8272a3..3085e10a72 100644
--- a/ui/meson.build
+++ b/ui/meson.build
@@ -6,7 +6,6 @@ system_ss.add(png)
 system_ss.add(files(
   'clipboard.c',
   'console.c',
-  'console-vc.c',
   'cursor.c',
   'input-keymap.c',
   'input-legacy.c',
@@ -19,6 +18,7 @@ system_ss.add(files(
   'ui-qmp-cmds.c',
   'util.c',
 ))
+system_ss.add(when: pixman, if_true: files('console-vc.c'), if_false: files('console-vc-stubs.c'))
 if dbus_display
   system_ss.add(files('dbus-module.c'))
 endif
-- 
2.41.0

[PULL v3 11/25] qmp/hmp: disable screendump if PIXMAN is missing

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

The command requires color conversion and line-by-line feeding. We could
have a simple fallback for simple formats though.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 qapi/ui.json     | 3 ++-
 ui/ui-hmp-cmds.c | 2 ++
 ui/ui-qmp-cmds.c | 2 ++
 hmp-commands.hx  | 2 ++
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/qapi/ui.json b/qapi/ui.json
index 006616aa77..e74cc3efb6 100644
--- a/qapi/ui.json
+++ b/qapi/ui.json
@@ -200,7 +200,8 @@
 { 'command': 'screendump',
   'data': {'filename': 'str', '*device': 'str', '*head': 'int',
            '*format': 'ImageFormat'},
-  'coroutine': true }
+  'coroutine': true,
+  'if': 'CONFIG_PIXMAN' }
 
 ##
 # == Spice
diff --git a/ui/ui-hmp-cmds.c b/ui/ui-hmp-cmds.c
index c671389473..26c8ced1f2 100644
--- a/ui/ui-hmp-cmds.c
+++ b/ui/ui-hmp-cmds.c
@@ -437,6 +437,7 @@ void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
     }
 }
 
+#ifdef CONFIG_PIXMAN
 void coroutine_fn
 hmp_screendump(Monitor *mon, const QDict *qdict)
 {
@@ -458,6 +459,7 @@ hmp_screendump(Monitor *mon, const QDict *qdict)
 end:
     hmp_handle_error(mon, err);
 }
+#endif
 
 void hmp_client_migrate_info(Monitor *mon, const QDict *qdict)
 {
diff --git a/ui/ui-qmp-cmds.c b/ui/ui-qmp-cmds.c
index debc07d678..d772e1cb7f 100644
--- a/ui/ui-qmp-cmds.c
+++ b/ui/ui-qmp-cmds.c
@@ -212,6 +212,7 @@ void qmp_client_migrate_info(const char *protocol, const char *hostname,
     error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "'spice'");
 }
 
+#ifdef CONFIG_PIXMAN
 #ifdef CONFIG_PNG
 /**
  * png_save: Take a screenshot as PNG
@@ -391,3 +392,4 @@ qmp_screendump(const char *filename, const char *device,
         }
     }
 }
+#endif /* CONFIG_PIXMAN */
diff --git a/hmp-commands.hx b/hmp-commands.hx
index c0a27688b6..765349ed14 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -252,6 +252,7 @@ SRST
 
 ERST
 
+#ifdef CONFIG_PIXMAN
     {
         .name       = "screendump",
         .args_type  = "filename:F,format:-fs,device:s?,head:i?",
@@ -267,6 +268,7 @@ SRST
 ``screendump`` *filename*
   Save screen into PPM image *filename*.
 ERST
+#endif
 
     {
         .name       = "logfile",
-- 
2.41.0

[PULL v3 12/25] virtio-gpu: replace PIXMAN for region/rect test

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Use a simpler implementation for rectangle geometry & intersect, drop
the need for (more complex) PIXMAN functions.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
---
 include/ui/rect.h       | 59 +++++++++++++++++++++++++++++++++++++++++
 hw/display/virtio-gpu.c | 30 ++++++++-------------
 2 files changed, 70 insertions(+), 19 deletions(-)
 create mode 100644 include/ui/rect.h

diff --git a/include/ui/rect.h b/include/ui/rect.h
new file mode 100644
index 0000000000..94898f92d0
--- /dev/null
+++ b/include/ui/rect.h
@@ -0,0 +1,59 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#ifndef QEMU_RECT_H
+#define QEMU_RECT_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct QemuRect {
+    int16_t x;
+    int16_t y;
+    uint16_t width;
+    uint16_t height;
+} QemuRect;
+
+static inline void qemu_rect_init(QemuRect *rect,
+                                  int16_t x, int16_t y,
+                                  uint16_t width, uint16_t height)
+{
+    rect->x = x;
+    rect->y = x;
+    rect->width = width;
+    rect->height = height;
+}
+
+static inline void qemu_rect_translate(QemuRect *rect,
+                                       int16_t dx, int16_t dy)
+{
+    rect->x += dx;
+    rect->y += dy;
+}
+
+static inline bool qemu_rect_intersect(const QemuRect *a, const QemuRect *b,
+                                       QemuRect *res)
+{
+    int16_t x1, x2, y1, y2;
+
+    x1 = MAX(a->x, b->x);
+    y1 = MAX(a->y, b->y);
+    x2 = MIN(a->x + a->width, b->x + b->width);
+    y2 = MIN(a->y + a->height, b->y + b->height);
+
+    if (x1 >= x2 || y1 >= y2) {
+        if (res) {
+            qemu_rect_init(res, 0, 0, 0, 0);
+        }
+
+        return false;
+    }
+
+    if (res) {
+        qemu_rect_init(res, x1, y1, x2 - x1, y2 - y1);
+    }
+
+    return true;
+}
+
+#endif
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 2707bceea8..b016d3bac8 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -16,6 +16,7 @@
 #include "qemu/iov.h"
 #include "sysemu/cpus.h"
 #include "ui/console.h"
+#include "ui/rect.h"
 #include "trace.h"
 #include "sysemu/dma.h"
 #include "sysemu/sysemu.h"
@@ -503,7 +504,7 @@ static void virtio_gpu_resource_flush(VirtIOGPU *g,
     struct virtio_gpu_simple_resource *res;
     struct virtio_gpu_resource_flush rf;
     struct virtio_gpu_scanout *scanout;
-    pixman_region16_t flush_region;
+    QemuRect flush_rect;
     bool within_bounds = false;
     bool update_submitted = false;
     int i;
@@ -565,34 +566,25 @@ static void virtio_gpu_resource_flush(VirtIOGPU *g,
         return;
     }
 
-    pixman_region_init_rect(&flush_region,
-                            rf.r.x, rf.r.y, rf.r.width, rf.r.height);
+    qemu_rect_init(&flush_rect, rf.r.x, rf.r.y, rf.r.width, rf.r.height);
     for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
-        pixman_region16_t region, finalregion;
-        pixman_box16_t *extents;
+        QemuRect rect;
 
         if (!(res->scanout_bitmask & (1 << i))) {
             continue;
         }
         scanout = &g->parent_obj.scanout[i];
 
-        pixman_region_init(&finalregion);
-        pixman_region_init_rect(&region, scanout->x, scanout->y,
-                                scanout->width, scanout->height);
+        qemu_rect_init(&rect, scanout->x, scanout->y,
+                       scanout->width, scanout->height);
 
-        pixman_region_intersect(&finalregion, &flush_region, &region);
-        pixman_region_translate(&finalregion, -scanout->x, -scanout->y);
-        extents = pixman_region_extents(&finalregion);
         /* work out the area we need to update for each console */
-        dpy_gfx_update(g->parent_obj.scanout[i].con,
-                       extents->x1, extents->y1,
-                       extents->x2 - extents->x1,
-                       extents->y2 - extents->y1);
-
-        pixman_region_fini(&region);
-        pixman_region_fini(&finalregion);
+        if (qemu_rect_intersect(&flush_rect, &rect, &rect)) {
+            qemu_rect_translate(&rect, -scanout->x, -scanout->y);
+            dpy_gfx_update(g->parent_obj.scanout[i].con,
+                           rect.x, rect.y, rect.width, rect.height);
+        }
     }
-    pixman_region_fini(&flush_region);
 }
 
 static void virtio_unref_resource(pixman_image_t *image, void *data)
-- 
2.41.0

[PULL v3 13/25] ui/console: when PIXMAN is unavailable, don't draw placeholder msg

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

When we can't draw text, simply show a blank display.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 ui/console.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ui/console.c b/ui/console.c
index a72c495b5a..8e688d3569 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -584,6 +584,7 @@ DisplaySurface *qemu_create_placeholder_surface(int w, int h,
                                                 const char *msg)
 {
     DisplaySurface *surface = qemu_create_displaysurface(w, h);
+#ifdef CONFIG_PIXMAN
     pixman_color_t bg = QEMU_PIXMAN_COLOR_BLACK;
     pixman_color_t fg = QEMU_PIXMAN_COLOR_GRAY;
     pixman_image_t *glyph;
@@ -598,6 +599,7 @@ DisplaySurface *qemu_create_placeholder_surface(int w, int h,
                                  x+i, y, FONT_WIDTH, FONT_HEIGHT);
         qemu_pixman_image_unref(glyph);
     }
+#endif
     surface->flags |= QEMU_PLACEHOLDER_FLAG;
     return surface;
 }
-- 
2.41.0

[PULL v3 14/25] vhost-user-gpu: skip VHOST_USER_GPU_UPDATE when !PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

This simply means that 2d drawing updates won't be handled, but 3d
should work.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/display/vhost-user-gpu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c
index 1150521d9d..709c8a02a1 100644
--- a/hw/display/vhost-user-gpu.c
+++ b/hw/display/vhost-user-gpu.c
@@ -307,6 +307,7 @@ vhost_user_gpu_handle_display(VhostUserGPU *g, VhostUserGpuMsg *msg)
         dpy_gl_update(con, m->x, m->y, m->width, m->height);
         break;
     }
+#ifdef CONFIG_PIXMAN
     case VHOST_USER_GPU_UPDATE: {
         VhostUserGpuUpdate *m = &msg->payload.update;
 
@@ -334,6 +335,7 @@ vhost_user_gpu_handle_display(VhostUserGPU *g, VhostUserGpuMsg *msg)
         }
         break;
     }
+#endif
     default:
         g_warning("unhandled message %d %d", msg->request, msg->size);
     }
-- 
2.41.0

[PULL v3 15/25] ui/gl: opengl doesn't require PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

The QEMU fallback covers the requirements. We still need the flags of
header inclusion with CONFIG_PIXMAN.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 ui/meson.build | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ui/meson.build b/ui/meson.build
index 3085e10a72..7c99613950 100644
--- a/ui/meson.build
+++ b/ui/meson.build
@@ -60,8 +60,8 @@ endif
 system_ss.add(opengl)
 if opengl.found()
   opengl_ss = ss.source_set()
-  opengl_ss.add(gbm)
-  opengl_ss.add(when: [opengl, pixman],
+  opengl_ss.add(gbm, pixman)
+  opengl_ss.add(when: [opengl],
                if_true: files('shader.c', 'console-gl.c', 'egl-helpers.c', 'egl-context.c'))
   ui_modules += {'opengl' : opengl_ss}
 endif
-- 
2.41.0

[PULL v3 16/25] ui/vnc: VNC requires PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 meson.build    | 6 +++++-
 ui/meson.build | 2 +-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/meson.build b/meson.build
index 505cc591b9..3e60f42f94 100644
--- a/meson.build
+++ b/meson.build
@@ -1560,7 +1560,11 @@ endif
 vnc = not_found
 jpeg = not_found
 sasl = not_found
-if get_option('vnc').allowed() and have_system
+if get_option('vnc') \
+             .disable_auto_if(not have_system) \
+             .require(pixman.found(),
+                      error_message: 'cannot enable VNC if pixman is not available') \
+             .allowed()
   vnc = declare_dependency() # dummy dependency
   jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
                     method: 'pkg-config')
diff --git a/ui/meson.build b/ui/meson.build
index 7c99613950..19723188b5 100644
--- a/ui/meson.build
+++ b/ui/meson.build
@@ -46,7 +46,7 @@ vnc_ss.add(files(
 ))
 vnc_ss.add(zlib, jpeg, gnutls)
 vnc_ss.add(when: sasl, if_true: files('vnc-auth-sasl.c'))
-system_ss.add_all(when: vnc, if_true: vnc_ss)
+system_ss.add_all(when: [vnc, pixman], if_true: vnc_ss)
 system_ss.add(when: vnc, if_false: files('vnc-stubs.c'))
 
 ui_modules = {}
-- 
2.41.0

[PULL v3 17/25] ui/spice: SPICE/QXL requires PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 meson.build        |  6 +++++-
 hw/display/Kconfig |  2 +-
 ui/meson.build     | 10 +++++-----
 3 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/meson.build b/meson.build
index 3e60f42f94..0f578ddbf4 100644
--- a/meson.build
+++ b/meson.build
@@ -1015,7 +1015,11 @@ if not get_option('spice_protocol').auto() or have_system
                               method: 'pkg-config')
 endif
 spice = not_found
-if not get_option('spice').auto() or have_system
+if get_option('spice') \
+             .disable_auto_if(not have_system) \
+             .require(pixman.found(),
+                      error_message: 'cannot enable SPICE if pixman is not available') \
+             .allowed()
   spice = dependency('spice-server', version: '>=0.14.0',
                      required: get_option('spice'),
                      method: 'pkg-config')
diff --git a/hw/display/Kconfig b/hw/display/Kconfig
index 7b3da68d1c..4d8b0cec40 100644
--- a/hw/display/Kconfig
+++ b/hw/display/Kconfig
@@ -93,7 +93,7 @@ config VGA
 
 config QXL
     bool
-    depends on SPICE && PCI
+    depends on SPICE && PCI && PIXMAN
     select VGA
 
 config VIRTIO_GPU
diff --git a/ui/meson.build b/ui/meson.build
index 19723188b5..024f494faf 100644
--- a/ui/meson.build
+++ b/ui/meson.build
@@ -141,12 +141,12 @@ if spice.found()
     'spice-display.c'
   ))
   ui_modules += {'spice-core' : spice_core_ss}
-endif
 
-if spice.found() and gio.found()
-  spice_ss = ss.source_set()
-  spice_ss.add(spice, gio, pixman, files('spice-app.c'))
-  ui_modules += {'spice-app': spice_ss}
+  if gio.found()
+    spice_ss = ss.source_set()
+    spice_ss.add(spice, gio, pixman, files('spice-app.c'))
+    ui_modules += {'spice-app': spice_ss}
+  endif
 endif
 
 keymaps = [
-- 
2.41.0

[PULL v3 18/25] ui/gtk: -display gtk requires PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 meson.build | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index 0f578ddbf4..8422e7da0c 100644
--- a/meson.build
+++ b/meson.build
@@ -1531,7 +1531,11 @@ gtkx11 = not_found
 vte = not_found
 have_gtk_clipboard = get_option('gtk_clipboard').enabled()
 
-if not get_option('gtk').auto() or have_system
+if get_option('gtk') \
+             .disable_auto_if(not have_system) \
+             .require(pixman.found(),
+                      error_message: 'cannot enable GTK if pixman is not available') \
+             .allowed()
   gtk = dependency('gtk+-3.0', version: '>=3.22.0',
                    method: 'pkg-config',
                    required: get_option('gtk'))
-- 
2.41.0

[PULL v3 19/25] ui/dbus: do not require PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Implement a fallback path for region 2D update.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 ui/dbus-listener.c | 90 ++++++++++++++++++++++++++++++++--------------
 ui/meson.build     |  4 +--
 2 files changed, 65 insertions(+), 29 deletions(-)

diff --git a/ui/dbus-listener.c b/ui/dbus-listener.c
index 36548a7f52..18f556aa73 100644
--- a/ui/dbus-listener.c
+++ b/ui/dbus-listener.c
@@ -26,9 +26,6 @@
 #include "qapi/error.h"
 #include "sysemu/sysemu.h"
 #include "dbus.h"
-#ifdef CONFIG_OPENGL
-#include <pixman.h>
-#endif
 #ifdef G_OS_UNIX
 #include <gio/gunixfdlist.h>
 #endif
@@ -41,6 +38,7 @@
 #include "ui/shader.h"
 #include "ui/egl-helpers.h"
 #include "ui/egl-context.h"
+#include "ui/qemu-pixman.h"
 #endif
 #include "trace.h"
 
@@ -62,9 +60,11 @@ struct _DBusDisplayListener {
 
     QemuDBusDisplay1Listener *proxy;
 
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_PIXMAN
     /* Keep track of the damage region */
     pixman_region32_t gl_damage;
+#else
+    int gl_damage;
 #endif
 
     DisplayChangeListener dcl;
@@ -545,6 +545,7 @@ static void dbus_gl_refresh(DisplayChangeListener *dcl)
         return;
     }
 
+#ifdef CONFIG_PIXMAN
     int n_rects = pixman_region32_n_rects(&ddl->gl_damage);
 
     for (int i = 0; i < n_rects; i++) {
@@ -555,6 +556,13 @@ static void dbus_gl_refresh(DisplayChangeListener *dcl)
                             box->x2 - box->x1, box->y2 - box->y1);
     }
     pixman_region32_clear(&ddl->gl_damage);
+#else
+    if (ddl->gl_damage) {
+        dbus_call_update_gl(dcl, 0, 0,
+                            surface_width(ddl->ds), surface_height(ddl->ds));
+        ddl->gl_damage = 0;
+    }
+#endif
 }
 #endif /* OPENGL */
 
@@ -569,20 +577,64 @@ static void dbus_gl_gfx_update(DisplayChangeListener *dcl,
 {
     DBusDisplayListener *ddl = container_of(dcl, DBusDisplayListener, dcl);
 
+#ifdef CONFIG_PIXMAN
     pixman_region32_t rect_region;
     pixman_region32_init_rect(&rect_region, x, y, w, h);
     pixman_region32_union(&ddl->gl_damage, &ddl->gl_damage, &rect_region);
     pixman_region32_fini(&rect_region);
+#else
+    ddl->gl_damage++;
+#endif
 }
 #endif
 
+static void dbus_gfx_update_sub(DBusDisplayListener *ddl,
+                                int x, int y, int w, int h)
+{
+    pixman_image_t *img;
+    size_t stride;
+    GVariant *v_data;
+
+    /* make a copy, since gvariant only handles linear data */
+    stride = w * DIV_ROUND_UP(PIXMAN_FORMAT_BPP(surface_format(ddl->ds)), 8);
+    img = pixman_image_create_bits(surface_format(ddl->ds),
+                                   w, h, NULL, stride);
+#ifdef CONFIG_PIXMAN
+    pixman_image_composite(PIXMAN_OP_SRC, ddl->ds->image, NULL, img,
+                           x, y, 0, 0, 0, 0, w, h);
+#else
+    {
+        uint8_t *src = (uint8_t *)pixman_image_get_data(ddl->ds->image);
+        uint8_t *dst = (uint8_t *)pixman_image_get_data(img);
+        int bp = PIXMAN_FORMAT_BPP(surface_format(ddl->ds)) / 8;
+        int hh;
+
+        for (hh = 0; hh < h; hh++) {
+            memcpy(&dst[stride * hh],
+                   &src[surface_stride(ddl->ds) * (hh + y) + x * bp],
+                   stride);
+        }
+    }
+#endif
+    v_data = g_variant_new_from_data(
+        G_VARIANT_TYPE("ay"),
+        pixman_image_get_data(img),
+        pixman_image_get_stride(img) * h,
+        TRUE,
+        (GDestroyNotify)pixman_image_unref,
+        img);
+    qemu_dbus_display1_listener_call_update(ddl->proxy,
+        x, y, w, h, pixman_image_get_stride(img), pixman_image_get_format(img),
+        v_data,
+        G_DBUS_CALL_FLAGS_NONE,
+        DBUS_DEFAULT_TIMEOUT, NULL, NULL, NULL);
+}
+
 static void dbus_gfx_update(DisplayChangeListener *dcl,
                             int x, int y, int w, int h)
 {
     DBusDisplayListener *ddl = container_of(dcl, DBusDisplayListener, dcl);
-    pixman_image_t *img;
     GVariant *v_data;
-    size_t stride;
 
     assert(ddl->ds);
 
@@ -619,25 +671,7 @@ static void dbus_gfx_update(DisplayChangeListener *dcl,
         return;
     }
 
-    /* make a copy, since gvariant only handles linear data */
-    stride = w * DIV_ROUND_UP(PIXMAN_FORMAT_BPP(surface_format(ddl->ds)), 8);
-    img = pixman_image_create_bits(surface_format(ddl->ds),
-                                   w, h, NULL, stride);
-    pixman_image_composite(PIXMAN_OP_SRC, ddl->ds->image, NULL, img,
-                           x, y, 0, 0, 0, 0, w, h);
-
-    v_data = g_variant_new_from_data(
-        G_VARIANT_TYPE("ay"),
-        pixman_image_get_data(img),
-        pixman_image_get_stride(img) * h,
-        TRUE,
-        (GDestroyNotify)pixman_image_unref,
-        img);
-    qemu_dbus_display1_listener_call_update(ddl->proxy,
-        x, y, w, h, pixman_image_get_stride(img), pixman_image_get_format(img),
-        v_data,
-        G_DBUS_CALL_FLAGS_NONE,
-        DBUS_DEFAULT_TIMEOUT, NULL, NULL, NULL);
+    dbus_gfx_update_sub(ddl, x, y, w, h);
 }
 
 #ifdef CONFIG_OPENGL
@@ -751,8 +785,10 @@ dbus_display_listener_dispose(GObject *object)
     g_clear_object(&ddl->map_proxy);
     g_clear_object(&ddl->d3d11_proxy);
     g_clear_pointer(&ddl->peer_process, CloseHandle);
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_PIXMAN
     pixman_region32_fini(&ddl->gl_damage);
+#endif
+#ifdef CONFIG_OPENGL
     egl_fb_destroy(&ddl->fb);
 #endif
 #endif
@@ -787,7 +823,7 @@ dbus_display_listener_class_init(DBusDisplayListenerClass *klass)
 static void
 dbus_display_listener_init(DBusDisplayListener *ddl)
 {
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_PIXMAN
     pixman_region32_init(&ddl->gl_damage);
 #endif
 }
diff --git a/ui/meson.build b/ui/meson.build
index 024f494faf..0ccb3387ee 100644
--- a/ui/meson.build
+++ b/ui/meson.build
@@ -93,7 +93,7 @@ if dbus_display
                                           '--generate-c-code', '@BASENAME@'])
   dbus_display1_lib = static_library('dbus-display1', dbus_display1, dependencies: gio)
   dbus_display1_dep = declare_dependency(link_with: dbus_display1_lib, include_directories: include_directories('.'))
-  dbus_ss.add(when: [gio, pixman, dbus_display1_dep],
+  dbus_ss.add(when: [gio, dbus_display1_dep],
               if_true: [files(
                 'dbus-chardev.c',
                 'dbus-clipboard.c',
@@ -101,7 +101,7 @@ if dbus_display
                 'dbus-error.c',
                 'dbus-listener.c',
                 'dbus.c',
-              ), opengl, gbm])
+              ), opengl, gbm, pixman])
   ui_modules += {'dbus' : dbus_ss}
 endif
 
-- 
2.41.0

[PULL v3 20/25] arm/kconfig: XLNX_ZYNQMP_ARM depends on PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

The Display Port has some strong PIXMAN dependency.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/arm/Kconfig         | 3 ++-
 hw/display/Kconfig     | 5 +++++
 hw/display/meson.build | 2 +-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index e35007ed41..d215a2c729 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -450,7 +450,7 @@ config STM32F405_SOC
 
 config XLNX_ZYNQMP_ARM
     bool
-    default y
+    default y if PIXMAN
     depends on TCG && AARCH64
     select AHCI
     select ARM_GIC
@@ -463,6 +463,7 @@ config XLNX_ZYNQMP_ARM
     select XILINX_AXI
     select XILINX_SPIPS
     select XLNX_CSU_DMA
+    select XLNX_DISPLAYPORT
     select XLNX_ZYNQMP
     select XLNX_ZDMA
     select USB_DWC3
diff --git a/hw/display/Kconfig b/hw/display/Kconfig
index 4d8b0cec40..1aafe1923d 100644
--- a/hw/display/Kconfig
+++ b/hw/display/Kconfig
@@ -134,3 +134,8 @@ config MACFB
     bool
     select FRAMEBUFFER
     depends on NUBUS
+
+config XLNX_DISPLAYPORT
+    bool
+    # defaults to "N", enabled by specific boards
+    depends on PIXMAN
diff --git a/hw/display/meson.build b/hw/display/meson.build
index 2b64fd9f9d..9c06aaee20 100644
--- a/hw/display/meson.build
+++ b/hw/display/meson.build
@@ -58,7 +58,7 @@ if config_all_devices.has_key('CONFIG_QXL')
 endif
 
 system_ss.add(when: 'CONFIG_DPCD', if_true: files('dpcd.c'))
-system_ss.add(when: 'CONFIG_XLNX_ZYNQMP_ARM', if_true: files('xlnx_dp.c'))
+system_ss.add(when: 'CONFIG_XLNX_DISPLAYPORT', if_true: files('xlnx_dp.c'))
 
 system_ss.add(when: 'CONFIG_ARTIST', if_true: files('artist.c'))
 
-- 
2.41.0

[PULL v3 21/25] hw/arm: XLNX_VERSAL depends on XLNX_CSU_DMA

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Fixes: 868d968004 ("hw/arm/xlnx-versal: Connect OSPI flash controller")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/arm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index d215a2c729..8b3dc160cd 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -484,6 +484,7 @@ config XLNX_VERSAL
     select XLNX_EFUSE_VERSAL
     select XLNX_USB_SUBSYS
     select XLNX_VERSAL_TRNG
+    select XLNX_CSU_DMA
 
 config NPCM7XX
     bool
-- 
2.41.0

[PULL v3 22/25] hw/sm501: allow compiling without PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Change the "x-pixman" property default value and use the fallback path
when PIXMAN support is disabled.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
---
 hw/display/sm501.c | 45 ++++++++++++++++++++++++++++++++-------------
 1 file changed, 32 insertions(+), 13 deletions(-)

diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index 0eecd00701..5b4e4509e1 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -438,6 +438,12 @@
 #define SM501_HWC_WIDTH                 64
 #define SM501_HWC_HEIGHT                64
 
+#ifdef CONFIG_PIXMAN
+#define DEFAULT_X_PIXMAN 7
+#else
+#define DEFAULT_X_PIXMAN 0
+#endif
+
 /* SM501 local memory size taken from "linux/drivers/mfd/sm501.c" */
 static const uint32_t sm501_mem_local_size[] = {
     [0] = 4 * MiB,
@@ -730,7 +736,6 @@ static void sm501_2d_operation(SM501State *s)
     switch (cmd) {
     case 0: /* BitBlt */
     {
-        static uint32_t tmp_buf[16384];
         unsigned int src_x = (s->twoD_source >> 16) & 0x01FFF;
         unsigned int src_y = s->twoD_source & 0xFFFF;
         uint32_t src_base = s->twoD_source_base & 0x03FFFFFF;
@@ -828,9 +833,11 @@ static void sm501_2d_operation(SM501State *s)
                 de = db + (width + (height - 1) * dst_pitch) * bypp;
                 overlap = (db < se && sb < de);
             }
+#ifdef CONFIG_PIXMAN
             if (overlap && (s->use_pixman & BIT(2))) {
                 /* pixman can't do reverse blit: copy via temporary */
                 int tmp_stride = DIV_ROUND_UP(width * bypp, sizeof(uint32_t));
+                static uint32_t tmp_buf[16384];
                 uint32_t *tmp = tmp_buf;
 
                 if (tmp_stride * sizeof(uint32_t) * height > sizeof(tmp_buf)) {
@@ -860,7 +867,9 @@ static void sm501_2d_operation(SM501State *s)
                                        dst_pitch * bypp / sizeof(uint32_t),
                                        8 * bypp, 8 * bypp, src_x, src_y,
                                        dst_x, dst_y, width, height);
-            } else {
+            } else
+#endif
+            {
                 fallback = true;
             }
             if (fallback) {
@@ -894,20 +903,23 @@ static void sm501_2d_operation(SM501State *s)
             color = cpu_to_le16(color);
         }
 
+#ifdef CONFIG_PIXMAN
         if (!(s->use_pixman & BIT(0)) || (width == 1 && height == 1) ||
             !pixman_fill((uint32_t *)&s->local_mem[dst_base],
                          dst_pitch * bypp / sizeof(uint32_t), 8 * bypp,
-                         dst_x, dst_y, width, height, color)) {
-            /* fallback when pixman failed or we don't want to call it */
-            uint8_t *d = s->local_mem + dst_base;
-            unsigned int x, y, i;
-            for (y = 0; y < height; y++) {
-                i = (dst_x + (dst_y + y) * dst_pitch) * bypp;
-                for (x = 0; x < width; x++, i += bypp) {
-                    stn_he_p(&d[i], bypp, color);
+                         dst_x, dst_y, width, height, color))
+#endif
+            {
+                /* fallback when pixman failed or we don't want to call it */
+                uint8_t *d = s->local_mem + dst_base;
+                unsigned int x, y, i;
+                for (y = 0; y < height; y++) {
+                    i = (dst_x + (dst_y + y) * dst_pitch) * bypp;
+                    for (x = 0; x < width; x++, i += bypp) {
+                        stn_he_p(&d[i], bypp, color);
+                    }
                 }
             }
-        }
         break;
     }
     default:
@@ -1878,6 +1890,12 @@ static void sm501_reset(SM501State *s)
 static void sm501_init(SM501State *s, DeviceState *dev,
                        uint32_t local_mem_bytes)
 {
+#ifndef CONFIG_PIXMAN
+    if (s->use_pixman != 0) {
+        warn_report("x-pixman != 0, not effective without PIXMAN");
+    }
+#endif
+
     s->local_mem_size_index = get_local_mem_size_index(local_mem_bytes);
 
     /* local memory */
@@ -2038,7 +2056,8 @@ static void sm501_realize_sysbus(DeviceState *dev, Error **errp)
 
 static Property sm501_sysbus_properties[] = {
     DEFINE_PROP_UINT32("vram-size", SM501SysBusState, vram_size, 0),
-    DEFINE_PROP_UINT8("x-pixman", SM501SysBusState, state.use_pixman, 7),
+    /* this a debug option, prefer PROP_UINT over PROP_BIT for simplicity */
+    DEFINE_PROP_UINT8("x-pixman", SM501SysBusState, state.use_pixman, DEFAULT_X_PIXMAN),
     DEFINE_PROP_END_OF_LIST(),
 };
 
@@ -2126,7 +2145,7 @@ static void sm501_realize_pci(PCIDevice *dev, Error **errp)
 
 static Property sm501_pci_properties[] = {
     DEFINE_PROP_UINT32("vram-size", SM501PCIState, vram_size, 64 * MiB),
-    DEFINE_PROP_UINT8("x-pixman", SM501PCIState, state.use_pixman, 7),
+    DEFINE_PROP_UINT8("x-pixman", SM501PCIState, state.use_pixman, DEFAULT_X_PIXMAN),
     DEFINE_PROP_END_OF_LIST(),
 };
 
-- 
2.41.0

[PULL v3 23/25] hw/mips: FULOONG depends on VT82C686

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/mips/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/mips/Kconfig b/hw/mips/Kconfig
index ac1eb06a51..66ec536e06 100644
--- a/hw/mips/Kconfig
+++ b/hw/mips/Kconfig
@@ -33,6 +33,7 @@ config JAZZ
 config FULOONG
     bool
     select PCI_BONITO
+    select VT82C686
 
 config LOONGSON3V
     bool
-- 
2.41.0

[PULL v3 24/25] hw/display/ati: allow compiling without PIXMAN

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Change the "x-pixman" property default value and use the fallback path
when PIXMAN support is disabled.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: BALATON Zoltan <balaton@eik.bme.hu>
---
 hw/display/ati.c       | 15 ++++++++++++++-
 hw/display/ati_2d.c    | 10 ++++++++--
 hw/display/meson.build |  2 +-
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/hw/display/ati.c b/hw/display/ati.c
index 9a87a5504a..569b8f6165 100644
--- a/hw/display/ati.c
+++ b/hw/display/ati.c
@@ -32,6 +32,12 @@
 
 #define ATI_DEBUG_HW_CURSOR 0
 
+#ifdef CONFIG_PIXMAN
+#define DEFAULT_X_PIXMAN 3
+#else
+#define DEFAULT_X_PIXMAN 0
+#endif
+
 static const struct {
     const char *name;
     uint16_t dev_id;
@@ -946,6 +952,12 @@ static void ati_vga_realize(PCIDevice *dev, Error **errp)
     ATIVGAState *s = ATI_VGA(dev);
     VGACommonState *vga = &s->vga;
 
+#ifndef CONFIG_PIXMAN
+    if (s->use_pixman != 0) {
+        warn_report("x-pixman != 0, not effective without PIXMAN");
+    }
+#endif
+
     if (s->model) {
         int i;
         for (i = 0; i < ARRAY_SIZE(ati_model_aliases); i++) {
@@ -1033,7 +1045,8 @@ static Property ati_vga_properties[] = {
     DEFINE_PROP_UINT16("x-device-id", ATIVGAState, dev_id,
                        PCI_DEVICE_ID_ATI_RAGE128_PF),
     DEFINE_PROP_BOOL("guest_hwcursor", ATIVGAState, cursor_guest_mode, false),
-    DEFINE_PROP_UINT8("x-pixman", ATIVGAState, use_pixman, 3),
+    /* this is a debug option, prefer PROP_UINT over PROP_BIT for simplicity */
+    DEFINE_PROP_UINT8("x-pixman", ATIVGAState, use_pixman, DEFAULT_X_PIXMAN),
     DEFINE_PROP_END_OF_LIST()
 };
 
diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c
index 0e6b8e4367..309bb5ccb6 100644
--- a/hw/display/ati_2d.c
+++ b/hw/display/ati_2d.c
@@ -123,6 +123,7 @@ void ati_2d_blt(ATIVGAState *s)
                 src_bits, dst_bits, src_stride, dst_stride, bpp, bpp,
                 src_x, src_y, dst_x, dst_y,
                 s->regs.dst_width, s->regs.dst_height);
+#ifdef CONFIG_PIXMAN
         if ((s->use_pixman & BIT(1)) &&
             s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT &&
             s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM) {
@@ -147,7 +148,9 @@ void ati_2d_blt(ATIVGAState *s)
                                        s->regs.dst_width, s->regs.dst_height);
             }
             g_free(tmp);
-        } else {
+        } else
+#endif
+        {
             fallback = true;
         }
         if (fallback) {
@@ -206,9 +209,12 @@ void ati_2d_blt(ATIVGAState *s)
         DPRINTF("pixman_fill(%p, %d, %d, %d, %d, %d, %d, %x)\n",
                 dst_bits, dst_stride, bpp, dst_x, dst_y,
                 s->regs.dst_width, s->regs.dst_height, filler);
+#ifdef CONFIG_PIXMAN
         if (!(s->use_pixman & BIT(0)) ||
             !pixman_fill((uint32_t *)dst_bits, dst_stride, bpp, dst_x, dst_y,
-                    s->regs.dst_width, s->regs.dst_height, filler)) {
+                    s->regs.dst_width, s->regs.dst_height, filler))
+#endif
+        {
             /* fallback when pixman failed or we don't want to call it */
             unsigned int x, y, i, bypp = bpp / 8;
             unsigned int dst_pitch = dst_stride * sizeof(uint32_t);
diff --git a/hw/display/meson.build b/hw/display/meson.build
index 9c06aaee20..344dfe3d8c 100644
--- a/hw/display/meson.build
+++ b/hw/display/meson.build
@@ -62,7 +62,7 @@ system_ss.add(when: 'CONFIG_XLNX_DISPLAYPORT', if_true: files('xlnx_dp.c'))
 
 system_ss.add(when: 'CONFIG_ARTIST', if_true: files('artist.c'))
 
-system_ss.add(when: [pixman, 'CONFIG_ATI_VGA'], if_true: files('ati.c', 'ati_2d.c', 'ati_dbg.c'))
+system_ss.add(when: 'CONFIG_ATI_VGA', if_true: [files('ati.c', 'ati_2d.c', 'ati_dbg.c'), pixman])
 
 
 if config_all_devices.has_key('CONFIG_VIRTIO_GPU')
-- 
2.41.0

[PULL v3 25/25] build-sys: make pixman actually optional

[marcandre.lureau]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 meson.build | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/meson.build b/meson.build
index 8422e7da0c..4848930680 100644
--- a/meson.build
+++ b/meson.build
@@ -817,9 +817,6 @@ if not get_option('pixman').auto() or have_system or have_tools
   pixman = dependency('pixman-1', required: get_option('pixman'), version:'>=0.21.8',
                       method: 'pkg-config')
 endif
-if not pixman.found() and (have_system or have_tools)
-  error('FIXME: pixman is currently required')
-endif
 
 zlib = dependency('zlib', required: true)
 
-- 
2.41.0

Re: [PULL v3 00/25] Pixman patches

[Marc-André Lureau]

Hi Stefan

On Tue, Nov 7, 2023 at 2:16 PM <marcandre.lureau@redhat.com> wrote:
>
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>
> The following changes since commit bb541a7068d2eee51a9abbe2dedcdf27298b1872:
>
>   Merge tag 'pull-pa-20231106' of https://gitlab.com/rth7680/qemu into staging (2023-11-07 15:01:17 +0800)
>
> are available in the Git repository at:
>
>   https://gitlab.com/marcandre.lureau/qemu.git tags/pixman-pull-request
>
> for you to fetch changes up to d017f28a2ee082f472ed69fedf0435b468000e92:
>
>   build-sys: make pixman actually optional (2023-11-07 14:04:25 +0400)
>
> ----------------------------------------------------------------
> Make Pixman an optional dependency
>
> ----------------------------------------------------------------
>
> Marc-André Lureau (25):
>   build-sys: add a "pixman" feature
>   build-sys: drop needless warning pragmas for old pixman
>   ui: compile out some qemu-pixman functions when !PIXMAN
>   ui: add pixman-minimal.h
>   vl: drop needless -spice checks
>   qemu-options: define -vnc only #ifdef CONFIG_VNC
>   vl: simplify display_remote logic
>   vl: move display early init before default devices
>   ui/console: allow to override the default VC
>   ui/vc: console-vc requires PIXMAN
>   qmp/hmp: disable screendump if PIXMAN is missing
>   virtio-gpu: replace PIXMAN for region/rect test
>   ui/console: when PIXMAN is unavailable, don't draw placeholder msg
>   vhost-user-gpu: skip VHOST_USER_GPU_UPDATE when !PIXMAN
>   ui/gl: opengl doesn't require PIXMAN
>   ui/vnc: VNC requires PIXMAN
>   ui/spice: SPICE/QXL requires PIXMAN
>   ui/gtk: -display gtk requires PIXMAN
>   ui/dbus: do not require PIXMAN
>   arm/kconfig: XLNX_ZYNQMP_ARM depends on PIXMAN
>   hw/arm: XLNX_VERSAL depends on XLNX_CSU_DMA
>   hw/sm501: allow compiling without PIXMAN
>   hw/mips: FULOONG depends on VT82C686
>   hw/display/ati: allow compiling without PIXMAN

There is a kind of false-positive with check-patch here:
86: ERROR: suspect code indent for conditional statements (8, 8)

I think we can agree to ignore. thanks

>   build-sys: make pixman actually optional
>
>  meson.build                   |  25 ++++-
>  qapi/ui.json                  |   3 +-
>  include/ui/console.h          |   2 +
>  include/ui/pixman-minimal.h   | 195 ++++++++++++++++++++++++++++++++++
>  include/ui/qemu-pixman.h      |  15 +--
>  include/ui/rect.h             |  59 ++++++++++
>  hw/display/ati.c              |  15 ++-
>  hw/display/ati_2d.c           |  10 +-
>  hw/display/sm501.c            |  45 +++++---
>  hw/display/vhost-user-gpu.c   |   2 +
>  hw/display/virtio-gpu.c       |  30 ++----
>  system/vl.c                   |  84 ++++++++-------
>  ui/console-vc-stubs.c         |  33 ++++++
>  ui/console.c                  |  19 ++++
>  ui/dbus-listener.c            |  90 +++++++++++-----
>  ui/qemu-pixman.c              |   6 ++
>  ui/ui-hmp-cmds.c              |   2 +
>  ui/ui-qmp-cmds.c              |   2 +
>  ui/vnc-stubs.c                |  12 ---
>  Kconfig.host                  |   3 +
>  hmp-commands.hx               |   2 +
>  hw/arm/Kconfig                |   4 +-
>  hw/display/Kconfig            |   7 +-
>  hw/display/meson.build        |   4 +-
>  hw/mips/Kconfig               |   1 +
>  meson_options.txt             |   2 +
>  qemu-options.hx               |   2 +
>  scripts/meson-buildoptions.sh |   3 +
>  ui/meson.build                |  22 ++--
>  29 files changed, 560 insertions(+), 139 deletions(-)
>  create mode 100644 include/ui/pixman-minimal.h
>  create mode 100644 include/ui/rect.h
>  create mode 100644 ui/console-vc-stubs.c
>
> --
> 2.41.0
>

Re: [PULL v3 00/25] Pixman patches

[Stefan Hajnoczi]

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Applied, thanks.

Please update the changelog at https://wiki.qemu.org/ChangeLog/8.2 for any user-visible changes.

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Re: [PULL v3 09/25] ui/console: allow to override the default VC

[David Woodhouse]

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On Tue, 2023-11-07 at 14:15 +0400, marcandre.lureau@redhat.com wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> If a display is backed by a specialized VC, allow to override the
> default "vc:80Cx24C".
> 
> As suggested by Paolo, if the display doesn't implement a VC (get_vc()
> returns NULL), use a fallback that will use a muxed console on stdio.
> 
> This changes the behaviour of "qemu -display none", to create a muxed
> serial/monitor by default (on TTY & not daemonized).
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> Reviewed-by: Thomas Huth <thuth@redhat.com>

Hrm. This breaks the command line documented at 
https://qemu-project.gitlab.io/qemu/system/i386/xen.html

 $ ./qemu-system-x86_64 --accel kvm,xen-version=0x40011,kernel-irqchip=split \
    -display none -chardev stdio,mux=on,id=char0,signal=off -mon char0 \
    -device xen-console,chardev=char0  -drive file=${GUEST_IMAGE},if=xen

qemu-system-x86_64: cannot use stdio by multiple character devices
qemu-system-x86_64: could not connect serial device to character backend 'stdio'

Can we make it create a Xen console by default, instead of a serial
port? And/or make it *not* use stdio if something else on the command
line already does?

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Re: [PULL v3 09/25] ui/console: allow to override the default VC

[Stefan Hajnoczi]

On Thu, 9 Nov 2023 at 19:10, David Woodhouse <dwmw2@infradead.org> wrote:
>
> On Tue, 2023-11-07 at 14:15 +0400, marcandre.lureau@redhat.com wrote:
> > From: Marc-André Lureau <marcandre.lureau@redhat.com>
> >
> > If a display is backed by a specialized VC, allow to override the
> > default "vc:80Cx24C".
> >
> > As suggested by Paolo, if the display doesn't implement a VC (get_vc()
> > returns NULL), use a fallback that will use a muxed console on stdio.
> >
> > This changes the behaviour of "qemu -display none", to create a muxed
> > serial/monitor by default (on TTY & not daemonized).
> >
> > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> > Reviewed-by: Thomas Huth <thuth@redhat.com>
>
> Hrm. This breaks the command line documented at
> https://qemu-project.gitlab.io/qemu/system/i386/xen.html
>
>  $ ./qemu-system-x86_64 --accel kvm,xen-version=0x40011,kernel-irqchip=split \
>     -display none -chardev stdio,mux=on,id=char0,signal=off -mon char0 \
>     -device xen-console,chardev=char0  -drive file=${GUEST_IMAGE},if=xen
>
> qemu-system-x86_64: cannot use stdio by multiple character devices
> qemu-system-x86_64: could not connect serial device to character backend 'stdio'
>
> Can we make it create a Xen console by default, instead of a serial
> port? And/or make it *not* use stdio if something else on the command
> line already does?

I have filed this in QEMU's bug tracker so it's not forgotten:
https://gitlab.com/qemu-project/qemu/-/issues/1974

Here is the list of open 8.2 bugs:
https://gitlab.com/qemu-project/qemu/-/milestones/10

Stefan

Re: [PULL v3 09/25] ui/console: allow to override the default VC

[David Woodhouse]

[-- Attachment #1: Type: text/plain, Size: 2617 bytes --]

On Thu, 2023-11-09 at 19:34 +0800, Stefan Hajnoczi wrote:
> On Thu, 9 Nov 2023 at 19:10, David Woodhouse <dwmw2@infradead.org> wrote:
> > 
> > On Tue, 2023-11-07 at 14:15 +0400, marcandre.lureau@redhat.com wrote:
> > > From: Marc-André Lureau <marcandre.lureau@redhat.com>
> > > 
> > > If a display is backed by a specialized VC, allow to override the
> > > default "vc:80Cx24C".
> > > 
> > > As suggested by Paolo, if the display doesn't implement a VC (get_vc()
> > > returns NULL), use a fallback that will use a muxed console on stdio.
> > > 
> > > This changes the behaviour of "qemu -display none", to create a muxed
> > > serial/monitor by default (on TTY & not daemonized).
> > > 
> > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> > > Reviewed-by: Thomas Huth <thuth@redhat.com>
> > 
> > Hrm. This breaks the command line documented at
> > https://qemu-project.gitlab.io/qemu/system/i386/xen.html
> > 
> >  $ ./qemu-system-x86_64 --accel kvm,xen-version=0x40011,kernel-irqchip=split \
> >     -display none -chardev stdio,mux=on,id=char0,signal=off -mon char0 \
> >     -device xen-console,chardev=char0  -drive file=${GUEST_IMAGE},if=xen
> > 
> > qemu-system-x86_64: cannot use stdio by multiple character devices
> > qemu-system-x86_64: could not connect serial device to character backend 'stdio'
> > 
> > Can we make it create a Xen console by default, instead of a serial
> > port? And/or make it *not* use stdio if something else on the command
> > line already does?
> 
> I have filed this in QEMU's bug tracker so it's not forgotten:
> https://gitlab.com/qemu-project/qemu/-/issues/1974
> 
> Here is the list of open 8.2 bugs:
> https://gitlab.com/qemu-project/qemu/-/milestones/10
> 
> Stefan

Thanks. Added a link there to the patch I just sent, along with a note
suggesting that perhaps we should go a bit further.

We're changing the QEMU behaviour in 8.2 to add these new devices using
stdio, and *failing* if something else on the command line already used
stdio.

My patch avoids adding a serial port if there's already a xen-console,
which is all well and good. But surely we shouldn't *fail* if something
else is already using stdio; we should just *not* add the new default
serial port? This might break other command lines which use stdio but
*not* for a serial port? This breaks too:

 $ ./qemu-system-x86_64 -display none -chardev stdio,id=char0
qemu-system-x86_64: cannot use stdio by multiple character devices
qemu-system-x86_64: could not connect serial device to character backend 'mon:stdio'


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Re: [PULL v3 09/25] ui/console: allow to override the default VC

[David Woodhouse]

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On Thu, 2023-11-09 at 11:45 +0000, David Woodhouse wrote:
> On Thu, 2023-11-09 at 19:34 +0800, Stefan Hajnoczi wrote:
> > On Thu, 9 Nov 2023 at 19:10, David Woodhouse <dwmw2@infradead.org> wrote:
> > > 
> > > On Tue, 2023-11-07 at 14:15 +0400, marcandre.lureau@redhat.com wrote:
> > > > From: Marc-André Lureau <marcandre.lureau@redhat.com>
> > > > 
> > > > If a display is backed by a specialized VC, allow to override the
> > > > default "vc:80Cx24C".
> > > > 
> > > > As suggested by Paolo, if the display doesn't implement a VC (get_vc()
> > > > returns NULL), use a fallback that will use a muxed console on stdio.
> > > > 
> > > > This changes the behaviour of "qemu -display none", to create a muxed
> > > > serial/monitor by default (on TTY & not daemonized).
> > > > 
> > > > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> > > > Reviewed-by: Thomas Huth <thuth@redhat.com>
> > > 
> > > Hrm. This breaks the command line documented at
> > > https://qemu-project.gitlab.io/qemu/system/i386/xen.html
> > > 
> > >  $ ./qemu-system-x86_64 --accel kvm,xen-version=0x40011,kernel-irqchip=split \
> > >     -display none -chardev stdio,mux=on,id=char0,signal=off -mon char0 \
> > >     -device xen-console,chardev=char0  -drive file=${GUEST_IMAGE},if=xen
> > > 
> > > qemu-system-x86_64: cannot use stdio by multiple character devices
> > > qemu-system-x86_64: could not connect serial device to character backend 'stdio'
> > > 
> > > Can we make it create a Xen console by default, instead of a serial
> > > port? And/or make it *not* use stdio if something else on the command
> > > line already does?
> > 
> > I have filed this in QEMU's bug tracker so it's not forgotten:
> > https://gitlab.com/qemu-project/qemu/-/issues/1974
> > 
> > Here is the list of open 8.2 bugs:
> > https://gitlab.com/qemu-project/qemu/-/milestones/10
> > 
> > Stefan
> 
> Thanks. Added a link there to the patch I just sent, along with a note
> suggesting that perhaps we should go a bit further.
> 
> We're changing the QEMU behaviour in 8.2 to add these new devices using
> stdio, and *failing* if something else on the command line already used
> stdio.
> 
> My patch avoids adding a serial port if there's already a xen-console,
> which is all well and good. But surely we shouldn't *fail* if something
> else is already using stdio; we should just *not* add the new default
> serial port? This might break other command lines which use stdio but
> *not* for a serial port? This breaks too:
> 
>  $ ./qemu-system-x86_64 -display none -chardev stdio,id=char0
> qemu-system-x86_64: cannot use stdio by multiple character devices
> qemu-system-x86_64: could not connect serial device to character backend 'mon:stdio'

Regardless of possible further improvements, please could I have a
review for the patch at
https://lore.kernel.org/qemu-devel/20231115172723.1161679-3-dwmw2@infradead.org/
which at least makes the documented command line work again.

Thanks.

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Re: [PULL v3 09/25] ui/console: allow to override the default VC

[Peter Maydell]

On Tue, 7 Nov 2023 at 10:24, <marcandre.lureau@redhat.com> wrote:
>
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>
> If a display is backed by a specialized VC, allow to override the
> default "vc:80Cx24C".
>
> As suggested by Paolo, if the display doesn't implement a VC (get_vc()
> returns NULL), use a fallback that will use a muxed console on stdio.
>
> This changes the behaviour of "qemu -display none", to create a muxed
> serial/monitor by default (on TTY & not daemonized).

This breaks existing command line setups -- if I say
"-display none" I just mean "don't do a display", not
"please also give me a monitor". We already have a
"do what I mean" option for "no graphics", which is
"-nographic". The advantage of -display none is that
it does only and exactly what it says it does.

Setups using semihosting for output now get a spurious
load of output from the monitor on their terminal.

I think we should revert this; I'll send a patch.

thanks
-- PMM

Re: [PULL v3 09/25] ui/console: allow to override the default VC

[Richard Henderson]

On 11/16/23 09:52, Peter Maydell wrote:
> On Tue, 7 Nov 2023 at 10:24, <marcandre.lureau@redhat.com> wrote:
>>
>> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>>
>> If a display is backed by a specialized VC, allow to override the
>> default "vc:80Cx24C".
>>
>> As suggested by Paolo, if the display doesn't implement a VC (get_vc()
>> returns NULL), use a fallback that will use a muxed console on stdio.
>>
>> This changes the behaviour of "qemu -display none", to create a muxed
>> serial/monitor by default (on TTY & not daemonized).
> 
> This breaks existing command line setups -- if I say
> "-display none" I just mean "don't do a display", not
> "please also give me a monitor". We already have a
> "do what I mean" option for "no graphics", which is
> "-nographic". The advantage of -display none is that
> it does only and exactly what it says it does.
> 
> Setups using semihosting for output now get a spurious
> load of output from the monitor on their terminal.
> 
> I think we should revert this; I'll send a patch.

Yes indeed.  I think this may be why I've seen my xterm go into strange i/o modes during 
"make check-tcg" of the semihosting tests.


r~