Richard Henderson <r...@twiddle.net> writes: > From: "Emilio G. Cota" <c...@braap.org> > > Measurements: > > [Baseline performance is that before applying this and the previous > commit]
Sadly this has regressed my qemu-system-aarch64 EL2 run. It was slightly masked by an unrelated assertion breakage which I had to fix. However with this patch my boot hangs spinning all 4 threads. Once reverted things work again. My command line: timeout -k 1s --foreground 120s ./aarch64-softmmu/qemu-system-aarch64 -machine type=virt -display none -m 4096 -cpu cortex-a57 -serial mon:stdio -netdev user,id=unet -device virtio-net-device,netdev=unet -drive file=/home/alex/lsrc/qemu/images/jessie-arm64.qcow2,id=myblock,index=0,if=none -device virtio-blk-device,drive=myblock -append "console=ttyAMA0 root=/dev/vda1 systemd.unit=benchmark.service" -kernel /home/alex/lsrc/qemu/images/aarch64-current-linux-kernel-only.img -smp 4 -machine gic-version=3 -machine virtualization=true -name debug-threads=on My tree with fix and revert: https://github.com/stsquad/qemu/tree/debug/aarch64-hang I'm investigating now. -- Alex Bennée
