From: Sean Christopherson <sean.j.christopherson@intel.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jim Mattson <jmattson@google.com>,
Liran Alon <liran.alon@oracle.com>,
kvm list <kvm@vger.kernel.org>,
Haozhong Zhang <haozhong.zhang@intel.com>
Subject: Re: [PATCH] kvm: nVMX: Relax guest IA32_FEATURE_CONTROL constraints
Date: Mon, 25 Nov 2019 10:35:53 -0800 [thread overview]
Message-ID: <20191125183553.GH12178@linux.intel.com> (raw)
In-Reply-To: <a0c3620f-ae7a-1473-2018-7c32d51b5120@redhat.com>
On Mon, Nov 25, 2019 at 07:14:15PM +0100, Paolo Bonzini wrote:
> On 25/11/19 18:45, Jim Mattson wrote:
> > I would call that an opt-out cap, rather than an opt-in cap. That is,
> > we'd like to opt-out from the ABI change. I was going to go ahead and
> > do it, but it looks like Paolo has accepted the change as it is.
>
> Yes, your experience has proved that guests are not annoyed by the
> discrepancy between VMX_INSIDE_SMX and the actual lack of SMX, so it's
> pointless to complicate the code.
Color me surprised that no guest cares about SMX :-)
next prev parent reply other threads:[~2019-11-25 18:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-22 23:43 [PATCH] kvm: nVMX: Relax guest IA32_FEATURE_CONTROL constraints Jim Mattson
2019-11-22 23:57 ` Liran Alon
2019-11-23 0:22 ` Jim Mattson
2019-11-23 1:49 ` Liran Alon
2019-11-25 17:45 ` Jim Mattson
2019-11-25 18:14 ` Paolo Bonzini
2019-11-25 18:35 ` Sean Christopherson [this message]
2019-11-25 12:37 ` Paolo Bonzini
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