Bug 1549602 - Add support in virtio-input Windows driver for VIRTIO_F_IOMMU_PLATFORM virtio feature
Summary: Add support in virtio-input Windows driver for VIRTIO_F_IOMMU_PLATFORM virtio...
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: virtio-win
Version: 8.0
Hardware: Unspecified
OS: Windows
Target Milestone: rc
: ---
Assignee: Yvugenfi@redhat.com
QA Contact: Peixiu Hou
Depends On: Red Hat1682882
Blocks: 1549577 Red Hat1558351
TreeView+ depends on / blocked
Reported: 2018-02-27 13:34 UTC by Yvugenfi@redhat.com
Modified: 2021-09-03 15:17 UTC (History)
7 users (show)

Fixed In Version: virtio-win-prewhql-0.1-174
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2020-04-28 16:05:15 UTC
Type: Feature Request
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-14033 0 None None None 2021-09-03 15:17:10 UTC
Red Hat Product Errata RHEA-2020:1757 0 None None None 2020-04-28 16:06:07 UTC

Description Yvugenfi@redhat.com 2018-02-27 13:34:28 UTC
Description of problem:
virtio-win drivers are not reporting VIRTIO_F_IOMMU_PLATFORM feature.

There are several things that should be done to fix it:

1. Ensure that Windows drivers are using Windows kernel DMA (easier for storage and network drivers that are already using framework specific APIs, additional work should be done for WDF based drivers).

2. Report the feature.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:

Actual results:

Expected results:

Additional info:

Comment 4 Yvugenfi@redhat.com 2019-12-11 12:58:50 UTC
Changes are in: https://github.com/virtio-win/kvm-guest-drivers-windows/pull/418

Comment 7 Peixiu Hou 2019-12-16 02:55:22 UTC
Reproduced this issue with build virtio-win-prewhql-173 on win10-32 guest cm, cannot install vioinput driver with iommu_platform=on.

Verified this issue with build virtio-win-prewhql-174 on win10-32 guest vm, virtio-input driver can be installed successfully with iommu_platform=on and works normally.

So this bug is fixed, changed the bug status to verified.

Comment 13 errata-xmlrpc 2020-04-28 16:05:15 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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