** Description changed: [Impact] * There is a message which was identified more confusing and misleading than helpful that should be dropped to avoid users being unsure about it. - * Fix: Just apply upstream change dropping the message + * Fix: Backport the upstream change dropping the message [Test Case] - * Run huge page backed power8 (cpu model on qemu) guest on power9 system - and check guest log in /var/log/libvirt/qemu/<guestname.log> - - * these should allow someone who is not familiar with the affected - package to reproduce the bug and verify that the updated package fixes - the problem. + * Run huge page backed power8 (cpu model on qemu) guest on power9 system + and check guest log in /var/log/libvirt/qemu/<guestname.log> [Regression Potential] * This drops a warning (that was almost never useful and often confusing). But it had no functional change to the behavior, therefore no regression should be seen at all (unless somebody missing the old message counts). [Other Info] * n/a ---- Problem : The following warning message is noticed when booting guest backed by hugepages. "2018-03-28T07:45:18.500173Z qemu-system-ppc64: System page size 0x40000000 is not enabled in page_size_mask (0x11000). Performance may be slow" Guest bootsup, however the warning message is see in qemu.log. Test Environment : Boston-LC Linux : 4.15.0-12-generic NAME="Ubuntu" VERSION="18.04 LTS (Bionic Beaver)" ID=ubuntu Guest is backed by hugepages. Guest xml <memoryBacking> <hugepages> <page size='1048576' unit='KiB'/> </hugepages> </memoryBacking> Host Hugepages. cat /sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages 4 One the guest is started, we see the warning message in the qemu.log cat /var/log/libvirt/qemu/Hari_compact_mode.log ---- ---- ---- 2018-03-28T07:45:18.370804Z qemu-system-ppc64: -chardev pty,id=charserial0: char device redirected to /dev/pts/2 (label charserial0) 2018-03-28T07:45:18.500173Z qemu-system-ppc64: System page size 0x40000000 is not enabled in page_size_mask (0x11000). Performance may be slow Leonardo/Breno, Is it possible we can request canonical to backport the below commit into Ubuntu 18.04 level ? https://github.com/qemu/qemu/commit/30f79dc13f116a79ff45d37ad0f5c035012064a7
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1806104 Title: [Ubuntu-18.04][LTC-Test] Warning: "qemu-system-ppc64: System page size 0x40000000 is not enabled in page_size_mask (0x11000). Performance may be slow" Noticed while booting guest backed by Hugepages. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1806104/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
