>>>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? > check /sys/module/kvm_intel/parameters/ple_gap, if non-zero(>0), ple is enabled, zero means ple is disabled. Thanks, Zhang Haoyu >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
