1 files changed, 60 insertions, 0 deletions
diff --git a/results/classifier/118/kernel/747 b/results/classifier/118/kernel/747
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+++ b/results/classifier/118/kernel/747
@@ -0,0 +1,60 @@
+kernel: 0.807
+architecture: 0.796
+performance: 0.786
+peripherals: 0.674
+device: 0.668
+boot: 0.666
+arm: 0.639
+graphic: 0.623
+ppc: 0.601
+mistranslation: 0.569
+debug: 0.479
+user-level: 0.468
+PID: 0.455
+network: 0.431
+hypervisor: 0.387
+semantic: 0.381
+VMM: 0.352
+permissions: 0.289
+TCG: 0.279
+x86: 0.273
+register: 0.268
+files: 0.261
+socket: 0.261
+assembly: 0.258
+vnc: 0.252
+KVM: 0.182
+risc-v: 0.165
+virtual: 0.087
+i386: 0.028
+
+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)