On Sun, Jun 8, 2014 at 11:52 PM, Zhang Haoyu <zhanghy@xxxxxxxxxxx> wrote: >>Hi, >> >>I am using this tool for querying VMX capabilities. >> >>http://git.qemu.org/?p=qemu.git;a=blob_plain;f=scripts/kvm/vmxcap;hb=HEAD >> >>And it shows as below that pause-loop exiting is not enabled. My kernel is 3.14. >> >>secondary processor-based controls >> Virtualize APIC accesses yes >> Enable EPT yes >> Descriptor-table exiting yes >> Enable RDTSCP yes >> Virtualize x2APIC mode yes >> Enable VPID yes >> WBINVD exiting yes >> Unrestricted guest no >> APIC register emulation no >> Virtual interrupt delivery no >> PAUSE-loop exiting no >> RDRAND exiting no >> Enable INVPCID no >> Enable VM functions no >> VMCS shadowing no >> EPT-violation #VE no >> >>What shall I do if I wish to enable PLE? I have also tried this: >> > From above info, your physical cpu dose not support ple feature, > if you want to enable ple, your cpu must support ple feature, and 'PAUSE exiting' must be 0-settting, 'PAUSE-loop exiting' must be 1-setting. > And, kvm-intel module will enable ple as default if your cpu support ple feature. > Hi, Haoyu, I have another machine, in which Pause Loop Exiting is showing yes, but PAUSE Exiting is also showing yes, see below, but you said PAUSE exiting must be 0 setting, so what shall I do? Is PLE enabled or not? primary processor-based controls Interrupt window exiting yes Use TSC offsetting yes HLT exiting yes INVLPG exiting yes MWAIT exiting yes RDPMC exiting yes RDTSC exiting yes CR3-load exiting default CR3-store exiting default CR8-load exiting yes CR8-store exiting yes Use TPR shadow yes NMI-window exiting yes MOV-DR exiting yes Unconditional I/O exiting yes Use I/O bitmaps yes Monitor trap flag yes Use MSR bitmaps yes MONITOR exiting yes PAUSE exiting yes Activate secondary control yes secondary processor-based controls Virtualize APIC accesses yes Enable EPT yes Descriptor-table exiting yes Enable RDTSCP yes Virtualize x2APIC mode yes Enable VPID yes WBINVD exiting yes Unrestricted guest yes APIC register emulation no Virtual interrupt delivery no PAUSE-loop exiting yes RDRAND exiting no Enable INVPCID no Enable VM functions no VMCS shadowing no EPT-violation #VE no -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
