On Fri, Jul 02, 2010 at 06:41:55PM +0900, Isaku Yamahata wrote:
> On Fri, Jul 02, 2010 at 09:03:39AM +0100, Stefan Hajnoczi wrote:
> > On Thu, Jul 1, 2010 at 8:30 PM, Eduard - Gabriel Munteanu
> > wrote:
> > > But suddenly the guest OS changes mappings and expects the IOMMU to
> > > enforce them a
On Fri, Jul 02, 2010 at 09:03:39AM +0100, Stefan Hajnoczi wrote:
> > That's true, but it's fair to be concerned about the guest itself.
> > Imagine it runs some possibly malicious apps which program the hardware
> > to do DMA. That should be safe when a IOMMU is present.
> >
> > But suddenly the gu
On Fri, Jul 02, 2010 at 09:03:39AM +0100, Stefan Hajnoczi wrote:
> On Thu, Jul 1, 2010 at 8:30 PM, Eduard - Gabriel Munteanu
> wrote:
> > On Wed, Jun 30, 2010 at 09:37:31AM +0100, Stefan Hajnoczi wrote:
> >> On Tue, Jun 29, 2010 at 6:25 PM, Eduard - Gabriel Munteanu
> >> wrote:
> >> > On the othe
On Thu, Jul 1, 2010 at 8:30 PM, Eduard - Gabriel Munteanu
wrote:
> On Wed, Jun 30, 2010 at 09:37:31AM +0100, Stefan Hajnoczi wrote:
>> On Tue, Jun 29, 2010 at 6:25 PM, Eduard - Gabriel Munteanu
>> wrote:
>> > On the other hand, we could just leave it alone for now. Changing
>> > mappings during D
On Wed, Jun 30, 2010 at 09:37:31AM +0100, Stefan Hajnoczi wrote:
> On Tue, Jun 29, 2010 at 6:25 PM, Eduard - Gabriel Munteanu
> wrote:
> > On the other hand, we could just leave it alone for now. Changing
> > mappings during DMA is stupid anyway: I don't think the guest can
> > recover the results
On Tue, Jun 29, 2010 at 6:25 PM, Eduard - Gabriel Munteanu
wrote:
> On the other hand, we could just leave it alone for now. Changing
> mappings during DMA is stupid anyway: I don't think the guest can
> recover the results of DMA safely, even though it might be used on
> transfers in progress you
