* interrupt remapping support
@ 2012-11-13 3:44 Abhinav Srivastava
2012-11-13 9:29 ` Gleb Natapov
0 siblings, 1 reply; 4+ messages in thread
From: Abhinav Srivastava @ 2012-11-13 3:44 UTC (permalink / raw)
To: kvm@vger.kernel.org
Hi there,
I would like to know if KVM supports interrupt remapping and queued
invalidation. I could not find it in the kvm source code.
I also noticed that these features are in KVM's TODO list. Is that
accurate? Any pointers or direction would be appreciated.
Thanks,
Abhinav
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: interrupt remapping support
2012-11-13 3:44 interrupt remapping support Abhinav Srivastava
@ 2012-11-13 9:29 ` Gleb Natapov
[not found] ` <CALKiAsFsiiz6eyYWCzoYeL3WV1D56xQsHC57oP8tjX+wRjqixg@mail.gmail.com>
0 siblings, 1 reply; 4+ messages in thread
From: Gleb Natapov @ 2012-11-13 9:29 UTC (permalink / raw)
To: Abhinav Srivastava; +Cc: kvm@vger.kernel.org
On Mon, Nov 12, 2012 at 10:44:51PM -0500, Abhinav Srivastava wrote:
> Hi there,
>
> I would like to know if KVM supports interrupt remapping and queued
> invalidation. I could not find it in the kvm source code.
> I also noticed that these features are in KVM's TODO list. Is that
> accurate? Any pointers or direction would be appreciated.
>
KVM does not implement VT-d spec if this is your question. Any help with
this will be appreciated.
--
Gleb.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: interrupt remapping support
[not found] ` <CALKiAsFsiiz6eyYWCzoYeL3WV1D56xQsHC57oP8tjX+wRjqixg@mail.gmail.com>
@ 2012-11-14 17:06 ` Gleb Natapov
[not found] ` <CALKiAsHyJykMD+taSBMwikWcMY6bbXT2vqedvnyXNo_+S3vSAw@mail.gmail.com>
0 siblings, 1 reply; 4+ messages in thread
From: Gleb Natapov @ 2012-11-14 17:06 UTC (permalink / raw)
To: emdel; +Cc: Abhinav Srivastava, kvm@vger.kernel.org
On Wed, Nov 14, 2012 at 05:46:45PM +0100, emdel wrote:
> On Tue, Nov 13, 2012 at 10:29 AM, Gleb Natapov <gleb@redhat.com> wrote:
>
> > KVM does not implement VT-d spec if this is your question. Any help with
> > this will be appreciated.
> >
>
> Hello everybody,
> following this link [1] it looks like that we can configure pass-through
> devices for KVM guests,
> so if it is the case and as you said KVM doesn't implement any Vt-d
> specification,
> are there any protections in place for DMA attacks?
>
>
KVM uses VT-d on a host for device assignment. Guest running inside KVM
will not see VT-d though since KVM does not emulate it.
--
Gleb.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: interrupt remapping support
[not found] ` <CALKiAsHyJykMD+taSBMwikWcMY6bbXT2vqedvnyXNo_+S3vSAw@mail.gmail.com>
@ 2012-11-14 17:35 ` Gleb Natapov
0 siblings, 0 replies; 4+ messages in thread
From: Gleb Natapov @ 2012-11-14 17:35 UTC (permalink / raw)
To: emdel; +Cc: Abhinav Srivastava, kvm@vger.kernel.org
On Wed, Nov 14, 2012 at 06:31:30PM +0100, emdel wrote:
> On Wed, Nov 14, 2012 at 6:06 PM, Gleb Natapov <gleb@redhat.com> wrote:
>
> > KVM uses VT-d on a host for device assignment. Guest running inside KVM
> > will not see VT-d though since KVM does not emulate it.
> >
>
> So another question comes up in my mind:
> what's the purpose of the host devices assignment if I cannot use it for
> the guest?
>
I do not think you understand what I am saying. You can use device
assignment for a guest.
--
Gleb.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-11-14 17:35 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2012-11-13 3:44 interrupt remapping support Abhinav Srivastava
2012-11-13 9:29 ` Gleb Natapov
[not found] ` <CALKiAsFsiiz6eyYWCzoYeL3WV1D56xQsHC57oP8tjX+wRjqixg@mail.gmail.com>
2012-11-14 17:06 ` Gleb Natapov
[not found] ` <CALKiAsHyJykMD+taSBMwikWcMY6bbXT2vqedvnyXNo_+S3vSAw@mail.gmail.com>
2012-11-14 17:35 ` Gleb Natapov
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