From: Paolo Bonzini <pbonzini@redhat.com>
To: David Matlack <dmatlack@google.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
kvm list <kvm@vger.kernel.org>,
jmontleo@redhat.com, bdas@redhat.com
Subject: Re: [PATCH 0/3] KVM: VMX: fix handling inv{ept,vpid} and nested RHEL6 KVM
Date: Sat, 19 Mar 2016 10:53:26 +0100 [thread overview]
Message-ID: <56ED2196.8030908@redhat.com> (raw)
In-Reply-To: <CALzav=cerRBHvvScNdpmr7JQaspER37m_GpGjAhcygo1VCZieA@mail.gmail.com>
On 18/03/2016 19:04, David Matlack wrote:
> > the tests would effectively DoS the host.
>
> How does this DoS the host? The guest is stuck executing the same
> instruction over and over, but it's exiting to KVM every time,
> allowing KVM to reschedule the VCPU. I would agree it DoSes the guest.
You're right, these tests are safe.
Paolo
prev parent reply other threads:[~2016-03-19 9:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-18 16:09 [PATCH 0/3] KVM: VMX: fix handling inv{ept,vpid} and nested RHEL6 KVM Paolo Bonzini
2016-03-18 16:09 ` [PATCH 1/3] KVM: VMX: avoid guest hang on invalid invept instruction Paolo Bonzini
2016-03-18 16:09 ` [PATCH 2/3] KVM: VMX: avoid guest hang on invalid invvpid instruction Paolo Bonzini
2016-03-18 16:09 ` [PATCH 3/3] KVM: VMX: fix nested vpid for old KVM guests Paolo Bonzini
2016-03-18 17:42 ` [PATCH 0/3] KVM: VMX: fix handling inv{ept,vpid} and nested RHEL6 KVM David Matlack
2016-03-18 17:58 ` Paolo Bonzini
2016-03-18 18:04 ` David Matlack
2016-03-19 9:53 ` Paolo Bonzini [this message]
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