APPLIED: [SRU][Artful][Bionic][PATCH 0/1] kvm: vmx: Reinstate support for CPUs without virtual NMI
Khaled Elmously
khalid.elmously at canonical.com
Sat Feb 3 01:54:00 UTC 2018
Applied to artful
On 2018-01-19 10:04:35 , Joseph Salisbury wrote:
> BugLink: http://bugs.launchpad.net/bugs/1741655
>
> == SRU Justification ==
> The following mainline commit introduced a regression in v4.12-rc1:
> 2c82878b0cb3 ("KVM: VMX: require virtual NMI support")
>
> This regression caused the kvm-intel module fail to load with the following error:
> "modprobe: ERROR: could not insert 'kvm_intel': Input/output error"
>
> This error would happen because support for CPUs without virtual NMI was removed
> by commit 2c82878b0cb3.
>
> Mainline commit 8a1b43922d0d fixes this regression and was added to mainline in v4.15-rc1.
>
>
> == Fix ==
> commit 8a1b43922d0d1279e7936ba85c4c2a870403c95f
> Author: Paolo Bonzini <pbonzini at redhat.com>
> Date: Mon Nov 6 13:31:12 2017 +0100
>
> kvm: vmx: Reinstate support for CPUs without virtual NMI
>
> == Regression Potential ==
> Low. This patch fixes a current regression. It was cc'd to upstream stable
> so had additional upstream review.
>
> == Test Case ==
> A test kernel was built with this patch and tested by the original bug reporter.
> The bug reporter states the test kernel resolved the bug.
>
> Paolo Bonzini (1):
> kvm: vmx: Reinstate support for CPUs without virtual NMI
>
> arch/x86/kvm/vmx.c | 150 +++++++++++++++++++++++++++++++++++++----------------
> 1 file changed, 106 insertions(+), 44 deletions(-)
>
> --
> 2.7.4
>
>
> --
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