[A] KVM module in 4.13 no longer supports old Intel CPUs

Bug #1738982 reported by Fabian Grünbichler
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

== SRU Justification ==

Impact: systems with CPUs lacking virtual NMI support are no longer able to load the kvm_intel module, and thus not able to use KVM functionality

Fix: cherry-pick re-introducing support for software NMI support

Regression Potential: applied upstream in 4.15 and 4.14.3, tested and verified by multiple people


the original dropping of support was (functionally) reverted after upstream got notified of how many CPUs were actually affected

see https://lkml.kernel.org/r/<email address hidden> for upstream patch re-introducing support
see https://lkml.kernel.org/r/<email address hidden> for the original upstream patch dropping support and following discusison

I'll send an SRU patch.

Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
Fabian Grünbichler (f-gruenbichler) wrote :

patch sent

Changed in linux (Ubuntu):
importance: Undecided → Medium
status: Confirmed → Triaged
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