On 25 March 2015 at 17:14, Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> wrote: > On 25 March 2015 at 17:14, Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> wrote: >> On 25 March 2015 at 07:59, Riku Voipio <riku.voipio@xxxxxxxxxx> wrote: >>> Hi, >>> >>> It appears on juno, I can start kvm with UEFI only on cortex-a53 cores: >>> >>> >>> taskset -c 0 qemu-system-aarch64 -m 1024 -cpu host -M virt -bios >>> QEMU_EFI.fd -enable-kvm -nographic >>> -> works: >>> UEFI Interactive Shell v2.0 >>> taskset -c 1 qemu-system-aarch64 -m 1024 -cpu host -M virt -bios >>> QEMU_EFI.fd -enable-kvm -nographic >>> -> hangs at cpu spinning 100% >>> ... >>> >> >> I can reproduce the hang, both with your UEFI binary and my own release build. >> The debug build works fine, unfortunately... >> > > Tianocore built from master as of today, that is. > OK, it appears that we were missing some cache maintenance. It is not obvious how that should affect A57 only, but with these patches, I can now reliably run the release version on my Seattle A57 https://git.linaro.org/people/ard.biesheuvel/uefi-next.git/shortlog/refs/heads/qemu-xen-cache-maintenance >>> Qemu and kernel are latest mainline, kvm from last months Ĺinaro >>> release. According to cpuinfo cores 0 and 3-5 are a53 and 1-2 are a57. >>> Details: >>> >>> # wget http://releases.linaro.org/15.01/components/kernel/uefi-linaro/release/qemu64-intelbds/QEMU_EFI.fd >>> uname -a >>> # Linux linaro-nano 4.0.0-rc5-linaro-juno #1 SMP PREEMPT Tue Mar 24 >>> 10:46:53 UTC 2015 aarch64 aarch64 aarch64 GNU/Linux >>> # qemu-system-aarch64 --version >>> QEMU emulator version 2.2.91 (Debian 2.3.0~rc1-185linaro+utopic), >>> Copyright (c) 2003-2008 Fabrice Bellard >>> # grep -E '(processor|part)' /proc/cpuinfo >>> processor : 0 >>> CPU part : 0xd03 >>> processor : 1 >>> CPU part : 0xd07 >>> processor : 2 >>> CPU part : 0xd07 >>> processor : 3 >>> CPU part : 0xd03 >>> processor : 4 >>> CPU part : 0xd03 >>> processor : 5 >>> CPU part : 0xd03 >>> >>> _______________________________________________ >>> Linaro-uefi mailing list >>> Linaro-uefi@xxxxxxxxxxxxxxxx >>> http://lists.linaro.org/mailman/listinfo/linaro-uefi _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
