On Thu, Jan 3, 2019 at 6:43 PM Dominique Martinet <asmadeus@xxxxxxxxxxxxx> wrote: > > Pavel Tatashin wrote on Thu, Jan 03, 2019: > > Could you please send the config file and qemu arguments that were > > used to reproduce this problem. > > Running qemu by hand, nothing fancy e.g. this works: > > # qemu-system-x86_64 -m 1G -smp 4 -drive file=/root/kvm-wrapper/disks/f2.img,if=virtio -serial mon:stdio --enable-kvm -cpu Haswell -device virtio-rng-pci -nographic > > (used a specific cpu just in case but normally runnning with cpu host on > a skylake machine; can probably go older) > > > qemu is fedora 29 blend as is: > $ qemu-system-x86_64 --version > QEMU emulator version 3.0.0 (qemu-3.0.0-3.fc29) > Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers > > > compressed .config attached to the mail, this can likely be trimmed down > some as well but that takes more time for me.. > I didn't rebuild the kernel so not 100% sure (comes from > /proc/config.gz) but it should work on a 4.20-rc2 kernel as written in > the first few lines; 857baa87b64 I referred to in another mail was > merged in 4.19-rc1 so anything past that is probably OK to reproduce... > > > Re-checked today with these exact options (fresh VM start; then suspend > laptop for a bit, then reboot VM): > [ 0.000000] Hypervisor detected: KVM > [ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00 > [ 2477.907447] kvm-clock: cpu 0, msr 153a4001, primary cpu clock > [ 2477.907448] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns > [ 2477.907450] tsc: Detected 2592.000 MHz processor I could not reproduce the problem. Did you suspend to memory between wake ups? Does this time jump happen every time, even if your laptop sleeps for a minute? I have tried with qemu 2.6 and 3.1 on Ubuntu, testing 4.20rc2. Pasha
