** Tags added: cscc
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https://bugs.launchpad.net/bugs/1810328
Title:
iommu - need to effectively disable iommu if "intel_iommu=off" is
passed as a kernel parameter
Status
This bug was fixed in the package linux - 4.4.0-142.168
---
linux (4.4.0-142.168) xenial; urgency=medium
* linux: 4.4.0-142.168 -proposed tracker (LP: #1811846)
* Packaging resync (LP: #1786013)
- [Packaging] update helper scripts
* iptables connlimit allows more connectio
Verification was done in Xenial kernel 4.4.0-142, available in -proposed
pocket.
Basically, a regular boot with "intel_iommu=on" was completed, and then we
kexec'ed
the same kernel, but now with "intel_iommu=off". Everything works as expected;
before this patch inclusion, we saw DMAR errors (as
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verifica
** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
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Title:
iommu - need to effectively disable iommu i
** Changed in: linux (Ubuntu Xenial)
Status: New => In Progress
** Changed in: linux (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Guilherme G. Piccoli (gpiccoli)
** Changed in: linux (Ubuntu)
Status: Confirmed
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
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Title:
iommu - need to effectively disable iommu
Patch submitted to kernel-team mailing list:
https://lists.ubuntu.com/archives/kernel-team/2019-January/097452.html
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Title:
iommu -
** Attachment added: "Issue scenario (iommu couldn't get disabled without the
patch)"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1810328/+attachment/5226416/+files/iommu-missing
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** Attachment added: "Fix scenario (iommu correctly disabled with the proposed
patch)"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1810328/+attachment/5226417/+files/iommu-patched
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