From: Wen Congyang <wency@xxxxxxxxxxxxxx> Subject: Re: [PATCH v4 2/3] KVM-INTEL: Add new module vmcsinfo-intel to fill VMCSINFO Date: Fri, 6 Jul 2012 16:25:23 +0800 > At 07/06/2012 04:04 PM, HATAYAMA Daisuke Wrote: >> From: Yanfei Zhang <zhangyanfei at cn.fujitsu.com> >> Subject: [PATCH v4 2/3] KVM-INTEL: Add new module vmcsinfo-intel to fill VMCSINFO >> Date: Wed, 4 Jul 2012 18:05:19 +0800 >> >>> Besides, this patch also exports vmcs revision identifier via >>> /sys/devices/system/cpu/vmcs_id and offsets of fields via >>> /sys/devices/system/cpu/vmcs/. >>> Individual offsets are contained in subfiles named by the filed's >>> encoding, e.g.: /sys/devices/cpu/vmcs/0800 >> >> According to the discussion starting from >> >> http://lkml.indiana.edu/hypermail/linux/kernel/1105.3/00749.html > > IIRC, kvm can not work in such environment. The vcpu can run on > different cpu. If the cpu's vmcs is different, I don't know what > will happen. So do we need to support for such environment now? > I think that if kvm can not work in such environment, we should > not provide vmcs information for each physical cpu. > I think so too. The design can be kept very simple if kvm doesn't support such case, and it would be good news. Is it true? Thanks. HATAYAMA, Daisuke
