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authorChristian Krinitsin <mail@krinitsin.com>2025-06-03 12:04:13 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-03 12:04:13 +0000
commit256709d2eb3fd80d768a99964be5caa61effa2a0 (patch)
tree05b2352fba70923126836a64b6a0de43902e976a /results/classifier/105/device/747
parent2ab14fa96a6c5484b5e4ba8337551bb8dcc79cc5 (diff)
downloademulator-bug-study-256709d2eb3fd80d768a99964be5caa61effa2a0.tar.gz
emulator-bug-study-256709d2eb3fd80d768a99964be5caa61effa2a0.zip
add new classifier result
Diffstat (limited to 'results/classifier/105/device/747')
-rw-r--r--results/classifier/105/device/74743
1 files changed, 43 insertions, 0 deletions
diff --git a/results/classifier/105/device/747 b/results/classifier/105/device/747
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@@ -0,0 +1,43 @@
+device: 0.668
+boot: 0.666
+graphic: 0.623
+instruction: 0.594
+mistranslation: 0.569
+network: 0.431
+semantic: 0.381
+socket: 0.261
+assembly: 0.258
+vnc: 0.252
+KVM: 0.182
+other: 0.182
+
+hvf-accelerated aarch64 hangs when switching to big endian mode
+Description of problem:
+Trying to boot a big endian Linux kernel using the above command line on an M1 Mac Mini just hangs, there is not a single output. However, by replacing `hvf` with `tcg`, the kernel boots up fine. The kernel also starts if I use KVM acceleration on a Linux host system.
+Steps to reproduce:
+1. Build a Linux kernel for big endian arm64
+2. Try to boot it with -accel hvf on an M1 Mac
+3. Observe a lot of nothing happening :-)
+Additional information:
+Sample run, TCG vs HVF
+```
+mikan:/tmp% qemu-system-aarch64 -accel tcg -machine virt,highmem=off -cpu cortex-a72 -nographic -kernel /tmp/vmlinuz-5.10.76-gentoo-r1-arm64.be |& head -16
+[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd083]
+[ 0.000000] Linux version 5.10.76-gentoo-r1-arm64 (root@localhost) (aarch64-unknown-linux-gnu-gcc (Gentoo 11.2.0 p1) 11.2.0, GNU ld (Gentoo 2.37_p1 p0) 2.37) #1 SMP Sun Nov 21 16:30:21 -00 2021
+[ 0.000000] Machine model: linux,dummy-virt
+[ 0.000000] NUMA: No NUMA configuration found
+[ 0.000000] NUMA: Faking a node at [mem 0x0000000040000000-0x0000000047ffffff]
+[ 0.000000] NUMA: NODE_DATA [mem 0x47f65300-0x47f76fff]
+[ 0.000000] Zone ranges:
+[ 0.000000] DMA [mem 0x0000000040000000-0x0000000047ffffff]
+[ 0.000000] DMA32 empty
+[ 0.000000] Normal empty
+[ 0.000000] Movable zone start for each node
+[ 0.000000] Early memory node ranges
+[ 0.000000] node 0: [mem 0x0000000040000000-0x0000000047ffffff]
+[ 0.000000] Initmem setup node 0 [mem 0x0000000040000000-0x0000000047ffffff]
+[ 0.000000] psci: probing for conduit method from DT.
+[ 0.000000] psci: PSCIv0.2 detected in firmware.
+mikan:/tmp% qemu-system-aarch64 -accel hvf -machine virt,highmem=off -cpu cortex-a72 -nographic -kernel /tmp/vmlinuz-5.10.76-gentoo-r1-arm64.be
+```
+(followed by tumbleweeds)