[Bug 1654271] Re: host machine freezes
[Expired for qemu (Ubuntu) because there has been no activity for 60 days.] ** Changed in: qemu (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654271 Title: host machine freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1654271/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1654271] Re: host machine freezes
** Changed in: qemu (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654271 Title: host machine freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1654271/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1654271] Re: host machine freezes
Hi, that stepping shouldn't be important but thanks for checking. I tried to find a few avx/fma test programs, but I only found super small ones and none triggered anything like your freeze. Since you have currently the only setup to trigger this, if you can you could try the far newer qemu/libvirt that is in Ubuntu Zesty (current release in development), but that is grasping for straws. What we really need is something we can reproduce this on :-/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654271 Title: host machine freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1654271/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1654271] Re: host machine freezes
** Changed in: qemu (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654271 Title: host machine freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1654271/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1654271] Re: host machine freezes
The difference between host-passthrough and host-model (Haswell) was confirmed by Linux CPUinfo, but there was a difference. Cpu family and model are the same, stepping is 3-> 1, flag is arch_perfmon, tsc_adjust is not host-model. AV2 and FMA are also valid in the CPU model of host-passthrough and host-model (Haswell). Since the OS of the host machine hangs up, you can not check the status with the QEMU monitor. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654271 Title: host machine freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1654271/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1654271] Re: host machine freezes
So as far as I understand, when you take avx2/fma away from the guest things work, but if you keep them enabled (via cpu model) it fails? Generally those features should be supported, to most of it they are just processor features and passed through. By Default I think avx2 is passed but fma is not - maybe that was you case. I checked with to get all I can and then check like /proc/cpuinfo which confirms I have them all. Since this is not emulation I'd hope that KVM itself isn't really involved in doing a lot after setting up initially. Is Radeon crimson relive even supported in a virtual guest? If it freezes what is the qemu status? Maybe check more of the status via https://en.wikibooks.org/wiki/QEMU/Monitor If you would find an equivalent test in a linux guest that I could retry that would very useful. ** Changed in: qemu (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654271 Title: host machine freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1654271/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1654271] Re: host machine freezes
Moving this to the Ubuntu-qemu bug tracker since you're apparently using Ubuntu's QEMU, not the upstream QEMU. ** Project changed: qemu => qemu (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654271 Title: host machine freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1654271/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
