On Wed, Jul 22, 2020 at 12:34:57PM +, Sironi, Filippo wrote:
> On Wed, 2020-07-22 at 14:19 +0200, j...@8bytes.org wrote:
> I wouldn't be surprised if a PCIe device raises a PCIe SERR if it is
> asked to do DMA beyond its abilities.
Yeah, but that would also make it impossible to safely
On Wed, 2020-07-22 at 14:19 +0200, j...@8bytes.org wrote:
>
> On Fri, Jul 17, 2020 at 03:15:43PM +, Sironi, Filippo wrote:
> > I don't believe that we want to trust a userspace driver here, this
> > may
> > result in hosts becoming unstable because devices are asked to do
> > things
> > they
On Fri, Jul 17, 2020 at 03:15:43PM +, Sironi, Filippo wrote:
> I don't believe that we want to trust a userspace driver here, this may
> result in hosts becoming unstable because devices are asked to do things
> they aren't meant to do (e.g., DMA beyond 48 bits).
How is the hosts stability
On Fri, 2020-07-17 at 15:36 +0100, Robin Murphy wrote:
> On 2020-07-17 14:22, Sironi, Filippo wrote:
> > On Fri, 2020-07-17 at 10:47 +0100, Robin Murphy wrote:
> > >
> > > On 2020-07-17 10:20, Sebastian Ott via iommu wrote:
> > > > Hello Joerg,
> > > >
> > > > On 2020-07-10 14:31, Joerg Roedel
On 2020-07-17 14:22, Sironi, Filippo wrote:
On Fri, 2020-07-17 at 10:47 +0100, Robin Murphy wrote:
On 2020-07-17 10:20, Sebastian Ott via iommu wrote:
Hello Joerg,
On 2020-07-10 14:31, Joerg Roedel wrote:
On Wed, Jul 01, 2020 at 12:46:31AM +0200, Sebastian Ott wrote:
The IVRS ACPI table
On Fri, 2020-07-17 at 10:47 +0100, Robin Murphy wrote:
>
> On 2020-07-17 10:20, Sebastian Ott via iommu wrote:
> > Hello Joerg,
> >
> > On 2020-07-10 14:31, Joerg Roedel wrote:
> > > On Wed, Jul 01, 2020 at 12:46:31AM +0200, Sebastian Ott wrote:
> > > > The IVRS ACPI table specifies maximum
On 2020-07-17 10:20, Sebastian Ott via iommu wrote:
Hello Joerg,
On 2020-07-10 14:31, Joerg Roedel wrote:
On Wed, Jul 01, 2020 at 12:46:31AM +0200, Sebastian Ott wrote:
The IVRS ACPI table specifies maximum address sizes for I/O virtual
addresses that can be handled by the IOMMUs in the
Hello Joerg,
On 2020-07-10 14:31, Joerg Roedel wrote:
On Wed, Jul 01, 2020 at 12:46:31AM +0200, Sebastian Ott wrote:
The IVRS ACPI table specifies maximum address sizes for I/O virtual
addresses that can be handled by the IOMMUs in the system. Parse that
data from the IVRS header to provide
Hi Sebastian,
On Wed, Jul 01, 2020 at 12:46:31AM +0200, Sebastian Ott wrote:
> The IVRS ACPI table specifies maximum address sizes for I/O virtual
> addresses that can be handled by the IOMMUs in the system. Parse that
> data from the IVRS header to provide aperture information for DMA
> mappings
