On 07/16/2017 at 08:56 PM, Alex Williamson wrote:
On Sun, 16 Jul 2017 18:53:11 +0200
Andreas Hartmann <andihartmann@xxxxxxxxxxxxxxx> wrote:
Hello Alex!
Nice to hear you again :-)
On 07/16/2017 at 04:53 PM Alex Williamson wrote:
On Sun, 16 Jul 2017 07:44:01 +0200
Andreas Hartmann <andihartmann@xxxxxxxxxxxxxxx> wrote:
Hello!
I've got a Asus X370-Pro motherboard with enabled iommu. Unfortunately,
the group 0 is mostly all of the system :-).
[ 2.602426] iommu: Adding device 0000:00:01.0 to group 0
[ 2.602440] iommu: Adding device 0000:00:01.3 to group 0
[ 2.603368] iommu: Adding device 0000:03:00.0 to group 0
[ 2.603377] iommu: Adding device 0000:03:00.1 to group 0
[ 2.603385] iommu: Adding device 0000:03:00.2 to group 0
[ 2.603396] iommu: Adding device 0000:1d:00.0 to group 0
[ 2.603406] iommu: Adding device 0000:1d:02.0 to group 0
[ 2.603417] iommu: Adding device 0000:1d:03.0 to group 0
[ 2.603428] iommu: Adding device 0000:1d:04.0 to group 0
[ 2.603439] iommu: Adding device 0000:1d:06.0 to group 0
[ 2.603450] iommu: Adding device 0000:1d:07.0 to group 0
[ 2.603466] iommu: Adding device 0000:24:00.0 to group 0
[ 2.603481] iommu: Adding device 0000:25:00.0 to group 0
[ 2.603498] iommu: Adding device 0000:26:00.0 to group 0
[ 2.603513] iommu: Adding device 0000:27:00.0 to group 0
Update your motherboard BIOS, AMD AGESA 1.0.0.6 is supposed to
enable ACS in the PCIe root ports. Thanks,
Group 0 is now group 10 - that's mostly all :-( - no significant change.
(Version 805 which should contain AGESA 1.0.0.6).
[ 2.600097] iommu: Adding device 0000:03:00.0 to group 10
[ 2.600117] iommu: Adding device 0000:03:00.1 to group 10
[ 2.600136] iommu: Adding device 0000:03:00.2 to group 10
[ 2.600148] iommu: Adding device 0000:1d:00.0 to group 10
[ 2.600158] iommu: Adding device 0000:1d:02.0 to group 10
[ 2.600169] iommu: Adding device 0000:1d:03.0 to group 10
[ 2.600180] iommu: Adding device 0000:1d:04.0 to group 10
[ 2.600190] iommu: Adding device 0000:1d:06.0 to group 10
[ 2.600201] iommu: Adding device 0000:1d:07.0 to group 10
[ 2.600216] iommu: Adding device 0000:24:00.0 to group 10
[ 2.600233] iommu: Adding device 0000:25:00.0 to group 10
[ 2.600249] iommu: Adding device 0000:26:00.0 to group 10
[ 2.600266] iommu: Adding device 0000:27:00.0 to group 10
All devices that are used are in the same group again.
Isn't it possible to allow them to put to VM anyway if there is no peer
to peer communication - same as it was possible with the previous
chipset (990xa)?
Ah, I see you have a PCIe switch with downstream ports 1d.*.0 where
the downstream switch ports don't support ACS (not surprising for
something reporting ASMedia as a subsystem capability). So ACS was
broken at multiple levels and now that it's exposed at the root port
it's still broken by the non-ACS switch. The endpoints downstream of
the switch are not sufficiently isolated to separate between VMs,
sorry, the hardware isn't up to the task at hand. Thanks,
In other words, you're telling, that there can't be done anything to get
it working? Do you know any other board, which doesn't have this problem
and could work?
Gigabyte? Asrock?
Thanks,
Andreas
