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Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/hypervisor/1774605')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/hypervisor/1774605 | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/hypervisor/1774605 b/results/classifier/deepseek-2-tmp/output/hypervisor/1774605 new file mode 100644 index 00000000..3a747d0c --- /dev/null +++ b/results/classifier/deepseek-2-tmp/output/hypervisor/1774605 @@ -0,0 +1,41 @@ + +PowerPC guest does not emulate L2 and L3 cache for KVM vCPUs + +PowerPC KVM guest does not emulate L2 and L2 caches for vCPU, it would be good to have them enabled 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 \ No newline at end of file |