feat: support installed guests and distribution display defaults

2026-10-13 04:27:06 +03:00
parent 533ae511b8
commit 48ee598e9f
8 changed files with 299 additions and 24 deletions
@@ -0,0 +1,71 @@
+--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
+@@ -128,6 +128,7 @@
+     uint32_t flags;
+     uint32_t xres;
+     uint32_t yres;
+    uint32_t refresh_rate;
+     uint64_t hostmem;
+     VirtIOGPUOutputList *outputs;
+ };
+@@ -173,7 +174,8 @@
+     DEFINE_PROP_BIT("edid", _state, _conf.flags, \
+                     VIRTIO_GPU_FLAG_EDID_ENABLED, true), \
+     DEFINE_PROP_UINT32("xres", _state, _conf.xres, 1280), \
+-    DEFINE_PROP_UINT32("yres", _state, _conf.yres, 800)
+    DEFINE_PROP_UINT32("yres", _state, _conf.yres, 800), \
+    DEFINE_PROP_UINT32("refresh_rate", _state, _conf.refresh_rate, 0)
+ 
+ typedef struct VGPUDMABuf {
+     QemuDmaBuf *buf;
+--- a/hw/display/virtio-gpu-base.c
+++ b/hw/display/virtio-gpu-base.c
+@@ -64,7 +64,9 @@
+         .height_mm = g->req_state[scanout].height_mm,
+         .prefx = g->req_state[scanout].width,
+         .prefy = g->req_state[scanout].height,
+-        .refresh_rate = g->req_state[scanout].refresh_rate,
+        /* An explicit monitor refresh rate, in mHz, survives UI resizes. */
+        .refresh_rate = g->conf.refresh_rate ? g->conf.refresh_rate :
+                        g->req_state[scanout].refresh_rate,
+     };
+ 
+     for (output_idx = 0, node = g->conf.outputs;
+--- a/hw/display/edid-generate.c
+++ b/hw/display/edid-generate.c
+@@ -220,17 +220,17 @@
+     desc[5 + len] = '\n';
+ }
+ 
+-static void edid_desc_ranges(uint8_t *desc)
+static void edid_desc_ranges(uint8_t *desc, uint32_t refresh_rate,
+                             uint32_t horizontal_rate)
+ {
+     edid_desc_type(desc, 0xfd);
+ 
+-    /* vertical (50 -> 125 Hz) */
+-    desc[5] =  50;
+-    desc[6] = 125;
+-
+-    /* horizontal (30 -> 160 kHz) */
+-    desc[7] =  30;
+-    desc[8] = 160;
+    /* Preserve the legacy ranges and include the preferred mode. */
+    desc[5] = 50;
+    desc[6] = MIN(255, MAX(125, DIV_ROUND_UP(refresh_rate, 1000)));
+
+    desc[7] = 30;
+    desc[8] = MIN(255, MAX(160, DIV_ROUND_UP(horizontal_rate, 1000)));
+ 
+     /* max dot clock (2550 MHz) */
+     desc[9] = 2550 / 10;
+@@ -513,7 +513,8 @@
+      * so dta descriptor offsets don't move any more.
+      */
+ 
+-    edid_desc_ranges(desc);
+    edid_desc_ranges(desc, refresh_rate,
+                     timings.clock * 10000 / (info->prefx + timings.xblank));
+     desc = edid_desc_next(edid, dta, desc);
+ 
+     if (desc && info->name) {