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Date:   Mon, 19 Aug 2019 10:08:29 +0800
From:   Yang Weijiang <weijiang.yang@intel.com>
To:     Jim Mattson <jmattson@google.com>
Cc:     Yang Weijiang <weijiang.yang@intel.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        kvm list <kvm@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        yu.c.zhang@intel.com, alazar@bitdefender.com,
        Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH RESEND v4 5/9] KVM: VMX: Add init/set/get functions for
 SPP
Message-ID: <20190819020829.GA27450@local-michael-cet-test>
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 <20190815134329.GA11449@local-michael-cet-test>
 <CALMp9eTGXDDfVspFwFyEhagg9sdnqZqzSQhDksT0bkKzVNGSqw@mail.gmail.com>
 <20190815163844.GD27076@linux.intel.com>
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On Fri, Aug 16, 2019 at 11:19:46AM -0700, Jim Mattson wrote:
> On Fri, Aug 16, 2019 at 6:29 AM Yang Weijiang <weijiang.yang@intel.com> wrote:
> 
> > Thanks Jim and Sean! Could we add a new flag in kvm to identify if nested VM is on
> > or off? That would make things easier. When VMLAUNCH is trapped,
> > set the flag, if VMXOFF is trapped, clear the flag.
> 
> KVM_GET_NESTED_STATE has the requested information. If
> data.vmx.vmxon_pa is anything other than -1, then the vCPU is in VMX
> operation. If (flags & KVM_STATE_NESTED_GUEST_MODE), then L2 is
> active.
Thanks Jim, I'll reference the code and make necessary change in next
SPP patch release.