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1303: virtio-gpu logs interrupts vs polled #22

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Merged
dylanneve1 merged 1 commit into from
Oct 23, 2026
Merged

1303: virtio-gpu logs interrupts vs polled #22

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16 changes: 16 additions & 0 deletions xnu/patches/1303-virtio-gpu-say-interrupts.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
diff --git a/bsd/dev/redwood_vgpu.c b/bsd/dev/redwood_vgpu.c
index 0c805f7..81f6852 100644
--- a/bsd/dev/redwood_vgpu.c
+++ b/bsd/dev/redwood_vgpu.c
@@ -126,8 +126,10 @@ vgpu_setup(void)
return ENOMEM;
}
vio_queue_intr(vg.ctrlq, true);
- vio_intr_enable(d); /* (or polled) */
+ int intr = vio_intr_enable(d); /* (or polled) */
vio_driver_ok(d);
+ printf("virtio-gpu: %s: %s\n", vio_name(d), intr == 0 && vio_intr_active(d) ? "interrupts" :
+ intr == ENOTSUP ? "polled (virtio_poll=1)" : "polled: no interrupt line");
vg.dev = d;
vg.state = 1;
printf("virtio-gpu: %s, features 0x%llx%s%s\n", vio_name(d), vg.features,
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