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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 16:27:09 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 16:27:09 +0000
commit4d9e26c0333abd39bdbd039dcdb30ed429c475ba (patch)
tree4010d5fb3e8bc48c110a2c1ff2a16b8648cb86bb /results/classifier/accel-gemma3:12b/kvm/2898
parent5541099586dbd6018574cb44e1934907c121526f (diff)
downloadqemu-analysis-4d9e26c0333abd39bdbd039dcdb30ed429c475ba.tar.gz
qemu-analysis-4d9e26c0333abd39bdbd039dcdb30ed429c475ba.zip
add gemma accelerator classification results
Diffstat (limited to 'results/classifier/accel-gemma3:12b/kvm/2898')
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@@ -0,0 +1,116 @@
+
+-M virt,dumpdtb is missing information from the device tree
+Description of problem:
+dumpdtb no longer produces a device tree with the full system described.
+
+
+```
+$ dtc -I dtb -O dts test.dtb
+<stdout>: Warning (unit_address_vs_reg): /soc/pci@30000000: node has a unit name, but no reg or ranges property
+<stdout>: Warning (simple_bus_reg): /soc/pci@30000000: missing or empty reg/ranges property
+/dts-v1/;
+
+/ {
+	#address-cells = <0x02>;
+	#size-cells = <0x02>;
+	compatible = "riscv-virtio";
+	model = "riscv-virtio,qemu";
+
+	pmu {
+		riscv,event-to-mhpmcounters = <0x01 0x01 0x7fff9 0x02 0x02 0x7fffc 0x10019 0x10019 0x7fff8 0x1001b 0x1001b 0x7fff8 0x10021 0x10021 0x7fff8>;
+		compatible = "riscv,pmu";
+	};
+
+	fw-cfg@10100000 {
+		dma-coherent;
+		reg = <0x00 0x10100000 0x00 0x18>;
+		compatible = "qemu,fw-cfg-mmio";
+	};
+
+	flash@20000000 {
+		bank-width = <0x04>;
+		reg = <0x00 0x20000000 0x00 0x2000000 0x00 0x22000000 0x00 0x2000000>;
+		compatible = "cfi-flash";
+	};
+
+	aliases {
+	};
+
+	chosen {
+		rng-seed = <0xd4266784 0xc7a7c66f 0xd5b7347d 0x862188f3 0x78065a8e 0xebdedae5 0xd77c47b0 0x34d31eff>;
+	};
+
+	soc {
+		#address-cells = <0x02>;
+		#size-cells = <0x02>;
+		compatible = "simple-bus";
+		ranges;
+
+		pci@30000000 {
+		};
+	};
+};
+```
+Steps to reproduce:
+1. qemu-system-riscv64 -machine virt,dumpdtb=test.dtb
+2. dtc -I dtb -O dts test.dtb
+Additional information:
+The regression was introduced in https://gitlab.com/qemu-project/qemu/-/commit/8fd2518ef2f8d. If this commit is reverted, the expected behavior returns.
+
+```
+dtc -I dtb -O dts test.dtb | grep "@"
+	platform-bus@4000000 {
+	memory@80000000 {
+		cpu@0 {
+	fw-cfg@10100000 {
+	flash@20000000 {
+		serial0 = "/soc/serial@10000000";
+		stdout-path = "/soc/serial@10000000";
+		rtc@101000 {
+		serial@10000000 {
+			clock-frequency = "", "8@";
+		test@100000 {
+		virtio_mmio@10008000 {
+		virtio_mmio@10007000 {
+		virtio_mmio@10006000 {
+		virtio_mmio@10005000 {
+		virtio_mmio@10004000 {
+		virtio_mmio@10003000 {
+		virtio_mmio@10002000 {
+		virtio_mmio@10001000 {
+		plic@c000000 {
+		clint@2000000 {
+		pci@30000000 {
+```
+
+Other machines are affected to a lesser degree. The arm virt machine:
+
+qemu-system-arm -machine virt,dumpdtb=test.dtb
+```
+@@ -8,28 +8,6 @@
+ 	#address-cells = <0x02>;
+ 	compatible = "linux,dummy-virt";
+
+-	psci {
+-		migrate = <0x84000005>;
+-		cpu_on = <0x84000003>;
+-		cpu_off = <0x84000002>;
+-		cpu_suspend = <0x84000001>;
+-		method = "hvc";
+-		compatible = "arm,psci-1.0", "arm,psci-0.2", "arm,psci";
+-	};
+-
+-	memory@40000000 {
+-		reg = <0x00 0x40000000 0x00 0x8000000>;
+-		device_type = "memory";
+-	};
+-
+-	platform-bus@c000000 {
+-		interrupt-parent = <0x8002>;
+-		ranges = <0x00 0x00 0xc000000 0x2000000>;
+-		#address-cells = <0x01>;
+-		#size-cells = <0x01>;
+-		compatible = "qemu,platform", "simple-bus";
+-	};
+-
+```