From: Marcelo Tosatti <mtosatti@redhat.com>
To: kvm-devel <kvm@vger.kernel.org>
Cc: Gleb Natapov <gleb@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>, Bandan Das <bsd@redhat.com>,
Nadav Amit <namit@cs.technion.ac.il>
Subject: Re: KVM: nested VMX: disable perf cpuid reporting
Date: Mon, 22 Sep 2014 16:01:03 -0300 [thread overview]
Message-ID: <20140922190103.GA2349@amt.cnet> (raw)
In-Reply-To: <20140918212457.GA9227@amt.cnet>
On Thu, Sep 18, 2014 at 06:24:57PM -0300, Marcelo Tosatti wrote:
>
> Initilization of L2 guest with -cpu host, on L1 guest with -cpu host
> triggers:
>
> (qemu) KVM: entry failed, hardware error 0x7
> ...
> nested_vmx_run: VMCS MSR_{LOAD,STORE} unsupported
>
> Nested VMX MSR load/store support is not sufficient to
> allow perf for L2 guest.
>
> Until properly fixed, trap CPUID and disable function 0xA.
>
> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Ping, Paolo?
next prev parent reply other threads:[~2014-09-22 19:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-18 21:24 KVM: nested VMX: disable perf cpuid reporting Marcelo Tosatti
2014-09-19 13:28 ` Paolo Bonzini
2014-09-22 19:01 ` Marcelo Tosatti [this message]
2014-09-22 19:16 ` Paolo Bonzini
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