The QEMU project is currently considering to move its bug tracking to another system. For this we need to know which bugs are still valid and which could be closed already. Thus we are setting older bugs to "Incomplete" now.
If you still think this bug report here is valid, then please switch the state back to "New" within the next 60 days, otherwise this report will be marked as "Expired". Or please mark it as "Fix Released" if the problem has been solved with a newer version of QEMU already. Thank you and sorry for the inconvenience. ** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1774605 Title: PowerPC guest does not emulate L2 and L3 cache for KVM vCPUs Status in QEMU: Incomplete Bug description: PowerPC KVM guest does not emulate L2 and L2 caches for vCPU, it would be good to have them emulated to guest if not any known issues/limitation already with PowerPC. Host Env: kernel: 4.17.0-rc7-00045-g0512e0134582 qemu: v2.12.0-923-gc181ddaa17-dirty #libvirtd -V libvirtd (libvirt) 4.4.0 Guest Kernel: # uname -a Linux atest-guest 4.17.0-rc7-00045-g0512e0134582 #9 SMP Fri Jun 1 02:55:50 EDT 2018 ppc64le ppc64le ppc64le GNU/Linux Guest: # lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 16 On-line CPU(s) list: 0-15 Thread(s) per core: 8 Core(s) per socket: 2 Socket(s): 1 NUMA node(s): 1 Model: 2.1 (pvr 004b 0201) Model name: POWER8 (architected), altivec supported Hypervisor vendor: KVM Virtualization type: para L1d cache: 64K L1i cache: 32K NUMA node0 CPU(s): 0-15 background: x86 enabling cpu L2 cache bydefault and L3 cache on demand for kvm guest and claims performance improvement as vcpus can be benefited with lesser `vmexits due to guest send IPIs.` with L3 cache enabled, below was patch for same. https://git.qemu.org/?p=qemu.git;a=commit;h=14c985cffa6cb177fc01a163d8bcf227c104718c To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1774605/+subscriptions