Public bug reported:
[Impact]
4.4 kernels will fail to boot on AWS instance types m6a and c6a.
[Test case]
Boot kernels on those instance types.
[Fix]
Flushes TLB global mappings when system is not affected by Meltdown.
[Potential regression]
Missing TLB flushes may lead to security vulnerabilities. Unneeded TLB flushes
lead to performance impact.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Fix Released
** Affects: linux (Ubuntu Xenial)
Importance: Medium
Assignee: Thadeu Lima de Souza Cascardo (cascardo)
Status: In Progress
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)
** Changed in: linux (Ubuntu Xenial)
Status: New => In Progress
** Changed in: linux (Ubuntu)
Status: New => Fix Released
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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1983030
Title:
Kernel fails to boot on some AMD systems
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
In Progress
Bug description:
[Impact]
4.4 kernels will fail to boot on AWS instance types m6a and c6a.
[Test case]
Boot kernels on those instance types.
[Fix]
Flushes TLB global mappings when system is not affected by Meltdown.
[Potential regression]
Missing TLB flushes may lead to security vulnerabilities. Unneeded TLB
flushes lead to performance impact.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1983030/+subscriptions
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