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authorChristian Krinitsin <mail@krinitsin.com>2025-05-21 21:21:26 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-05-21 21:21:26 +0200
commit4b927bc37359dec23f67d3427fc982945f24f404 (patch)
tree245449ef9146942dc7fffd0235b48b7e70a00bf2 /gitlab/issues/target_arm/host_missing/accel_HVF/747.toml
parentaa8bd79cec7bf6790ddb01d156c2ef2201abbaab (diff)
downloademulator-bug-study-4b927bc37359dec23f67d3427fc982945f24f404.tar.gz
emulator-bug-study-4b927bc37359dec23f67d3427fc982945f24f404.zip
add gitlab issues in toml format
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+id = 747
+title = "hvf-accelerated aarch64 hangs when switching to big endian mode"
+state = "closed"
+created_at = "2021-11-24T19:30:04.332Z"
+closed_at = "2021-11-26T20:44:43.497Z"
+labels = ["Closed::WontFix", "accel: HVF", "target: arm", "workflow::Needs Info"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/747"
+host-os = "macOS Monterey Version 12.0.1"
+host-arch = "ARM"
+qemu-version = "QEMU emulator version 6.1.0"
+guest-os = "Gentoo Linux"
+guest-arch = "ARM (64 bit big endian)"
+description = """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."""
+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 = """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)"""