[Artful] (upstream) cherry-pick mmu_notifier fix to prevent Windows BSODs

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[Artful] (upstream) cherry-pick mmu_notifier fix to prevent Windows BSODs

Fabian Grünbichler
BugLink: https://bugs.launchpad.net/bugs/1738972

Impact: Windows 2016 and 10 VMs running in Qemu VMs using KVM trigger
BSODs under certain memory conditions

Fix: Single follow-up upstream cherry pick which fixes the problem.

Regression Potential: Merged in 4.15 and 4.14.6, tested by multiple
affected users.

see https://marc.info/?l=linux-kernel&m=151203441531472&w=2 for the long
writeup

clean cherry-pick from 4.14.6

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ACK: [Artful] (upstream) cherry-pick mmu_notifier fix to prevent Windows BSODs

Stefan Bader-2
On 19.12.2017 09:52, Fabian Grünbichler wrote:

> BugLink: https://bugs.launchpad.net/bugs/1738972
>
> Impact: Windows 2016 and 10 VMs running in Qemu VMs using KVM trigger
> BSODs under certain memory conditions
>
> Fix: Single follow-up upstream cherry pick which fixes the problem.
>
> Regression Potential: Merged in 4.15 and 4.14.6, tested by multiple
> affected users.
>
> see https://marc.info/?l=linux-kernel&m=151203441531472&w=2 for the long
> writeup
>
> clean cherry-pick from 4.14.6
>
>
>
Clean cherry-pick from upstream stable, tested.

Acked-by: Stefan Bader <[hidden email]>



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ACK: [Artful] (upstream) cherry-pick mmu_notifier fix to prevent Windows BSODs

Colin King
In reply to this post by Fabian Grünbichler
On 19/12/17 08:52, Fabian Grünbichler wrote:

> BugLink: https://bugs.launchpad.net/bugs/1738972
>
> Impact: Windows 2016 and 10 VMs running in Qemu VMs using KVM trigger
> BSODs under certain memory conditions
>
> Fix: Single follow-up upstream cherry pick which fixes the problem.
>
> Regression Potential: Merged in 4.15 and 4.14.6, tested by multiple
> affected users.
>
> see https://marc.info/?l=linux-kernel&m=151203441531472&w=2 for the long
> writeup
>
> clean cherry-pick from 4.14.6
>

Clean cherry pick with testing, so looks OK.

Acked-by: Colin Ian King <[hidden email]>

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APPLIED: [Artful] (upstream) cherry-pick mmu_notifier fix to prevent Windows BSODs

Stefan Bader-2
In reply to this post by Fabian Grünbichler
On 19.12.2017 09:52, Fabian Grünbichler wrote:

> BugLink: https://bugs.launchpad.net/bugs/1738972
>
> Impact: Windows 2016 and 10 VMs running in Qemu VMs using KVM trigger
> BSODs under certain memory conditions
>
> Fix: Single follow-up upstream cherry pick which fixes the problem.
>
> Regression Potential: Merged in 4.15 and 4.14.6, tested by multiple
> affected users.
>
> see https://marc.info/?l=linux-kernel&m=151203441531472&w=2 for the long
> writeup
>
> clean cherry-pick from 4.14.6
>
>
>
Applied to artful/master-next-backlog


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