linux-kernel - Re: [patch 2/3] KVM: x86: introduce ioctl to allow frequency hypercalls

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Message-ID: <abd07a6d-9c76-5980-f7f1-f25199ee7803@redhat.com>
Date:   Thu, 23 Feb 2017 18:31:20 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Radim Krcmar <rkrcmar@...hat.com>,
        Marcelo Tosatti <mtosatti@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [patch 2/3] KVM: x86: introduce ioctl to allow frequency
 hypercalls



On 23/02/2017 17:48, Radim Krcmar wrote:
> Doing it manually doesn't sound useful outside of testing ...
> is DPDK actually being used "dynamically"?
> (I thought that the setup is decided when the host boots.)

Or at the very least when the guest boots.  I agree that KVM_ENABLE_CAP
is enough.  However, changing KVM_CPUID_FEATURES should be handled by
userspace (KVM doesn't know about 0x400000xx leaves at all).