:00.1
/sys/kernel/iommu_groups/15/devices/:01:00.0
/sys/kernel/iommu_groups/7/devices/:00:13.0
/sys/kernel/iommu_groups/7/devices/:00:13.2
/sys/kernel/iommu_groups/17/devices/:04:00.0
$ sudo kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used
$ perf list | grep iommu
No amd_iommu events
Best regards and many thanks.
--
David Coe
Hi Suravee!
On 15/04/2021 10:28, Suthikulpanit, Suravee wrote:
David,
On 4/14/2021 10:33 PM, David Coe wrote:
Hi Suravee!
I've re-run your revert+update patch on Ubuntu's latest kernel
5.11.0-14 partly to check my mailer's 'mangling' hadn't also reached
the code!
There are 3 sets
I think you've put your finger on it, Suravee!
On 15/04/2021 10:28, Suthikulpanit, Suravee wrote:
David,
On 4/14/2021 10:33 PM, David Coe wrote:
Hi Suravee!
I've re-run your revert+update patch on Ubuntu's latest kernel
5.11.0-14 partly to check my mailer's 'mangling' hadn't also reached
(33.28%)
0 amd_iommu_0/vapic_int_guest/ (33.28%)
345 amd_iommu_0/vapic_int_non_guest/ (33.29%)
10.000799128 seconds time elapsed
Results for Ryzen 7 4700U to follow.
--
David Coe
er Ryzen 2400G. Will do some RTFM but anyone
with comments and insight?
841,689,151,202,939 amd_iommu_0/mem_dte_mis/ (33.44%)
Otherwise, all seems to running smoothly (especially for a distribution
still in β). Bravo and many thanks all!
--
David Coe
Hi Suravee!
I've re-run your revert+update patch on Ubuntu's latest kernel 5.11.0-14
partly to check my mailer's 'mangling' hadn't also reached the code!
There are 3 sets of results in the attachment, all for the Ryzen 2400G.
The as-distributed kernel already incorporates your IOMMU RFCv3
Hi Suravee!
Results for Ryzen 2400G on Ubuntu 20.10, kernel 5.8.0-50 with patch 2/2
alone. Events batched 3 x 8 to avoid counter-multiplexing (?) artefacts.
On 15/04/2021 10:28, Suthikulpanit, Suravee wrote:
David,
For the Ryzen 2400G, could you please try with:
- 1 event at a time
- Not
inux-iommu/alpine.lnx.3.20.13.2006030935570.3...@monopod.intra.ispras.ru/
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201753
Cc: Tj (Elloe Linux)
Cc: Shuah Khan
Cc: Alexander Monakov
Cc: David Coe
Cc: Paul Menzel
Signed-off-by: Suravee Suthikulpanit
---
drivers/iommu/amd/i
Hi again!
For completeness, I'm attaching results for the revert+update patch
running the Ubuntu 21.04β kernel 5.11.0-14 on a Ryzen 4700U laptop.
The enormous amd_iommu running stats aren't always there, as they nearly
always are on the the 2400G desktop, but they do turn up (depending on
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