From: Marcelo Tosatti <mtosatti@redhat.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
chrisw@redhat.com, ddutile@redhat.com,
iommu@lists.linux-foundation.org
Subject: Re: [PATCH] kvm: Disable device assignment without interrupt remapping
Date: Tue, 19 Jul 2011 11:43:04 -0300 [thread overview]
Message-ID: <20110719144304.GA31520@amt.cnet> (raw)
In-Reply-To: <20110714192500.4065.28234.stgit@s20.home>
On Thu, Jul 14, 2011 at 01:27:03PM -0600, Alex Williamson wrote:
> IOMMU interrupt remapping support provides a further layer of
> isolation for device assignment by preventing arbitrary interrupt
> block DMA writes by a malicious guest from reaching the host. By
> default, we should require that the platform provides interrupt
> remapping support, with an opt-in mechanism for existing behavior.
>
> Both AMD IOMMU and Intel VT-d2 hardware support interrupt
> remapping, however we currently only have software support on
> the Intel side. Users wishing to re-enable device assignment
> when interrupt remapping is not supported on the platform can
> use the "allow_unsafe_assigned_interrupts=1" module option.
>
> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Applied, thanks.
prev parent reply other threads:[~2011-07-19 15:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-14 19:27 [PATCH] kvm: Disable device assignment without interrupt remapping Alex Williamson
2011-07-19 14:43 ` Marcelo Tosatti [this message]
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