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From: Marcelo Tosatti <mtosatti@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Bandan Das <bsd@redhat.com>,
	kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
	Gleb Natapov <gleb@kernel.org>
Subject: Re: [PATCH v2 1/3] KVM: nVMX: Don't advertise single context invalidation for invept
Date: Fri, 11 Apr 2014 16:02:16 -0300	[thread overview]
Message-ID: <20140411190216.GA18340@amt.cnet> (raw)
In-Reply-To: <53478A15.9080903@siemens.com>

On Fri, Apr 11, 2014 at 08:22:13AM +0200, Jan Kiszka wrote:
> > But rethinking this again, I agree with you. If there's a hypervisor
> > with a  single context invept implmentation that does not fallback,
> > this will unfortunately not work. Jan, do you agree with this ?
> 
> A hypervisor that doesn't properly check the HW caps is just broken. And
> one that mandates single context invalidation support is silly.

Is this a justification for removing INVEPT single-context until it 
is implemented as single-context?


  parent reply	other threads:[~2014-04-11 19:02 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-31 21:00 [PATCH v2 0/3] nVMX: Fixes to run Xen as L1 Bandan Das
2014-03-31 21:00 ` [PATCH v2 1/3] KVM: nVMX: Don't advertise single context invalidation for invept Bandan Das
2014-04-10 20:47   ` Marcelo Tosatti
2014-04-11  0:27     ` Bandan Das
2014-04-11  6:22       ` Jan Kiszka
2014-04-11 17:26         ` Bandan Das
2014-04-11 18:01           ` Jan Kiszka
2014-04-11 18:35             ` Bandan Das
2014-04-11 18:53               ` Jan Kiszka
2014-04-11 19:35                 ` Marcelo Tosatti
2014-04-14  5:46                   ` Jan Kiszka
2014-04-11 19:38                 ` Bandan Das
2014-04-11 18:48         ` Marcelo Tosatti
2014-04-11 19:33           ` Bandan Das
2014-04-11 19:02         ` Marcelo Tosatti [this message]
2014-03-31 21:00 ` [PATCH v2 2/3] KVM: nVMX: Ack and write vector info to intr_info if L1 asks us to Bandan Das
2014-04-11 18:33   ` Marcelo Tosatti
2014-04-11 19:17     ` Bandan Das
2014-04-11 19:20       ` Marcelo Tosatti
2014-04-12 16:57         ` Paolo Bonzini
2014-03-31 21:00 ` [PATCH v2 3/3] KVM: nVMX: Advertise support for interrupt acknowledgement Bandan Das

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