While this is caused by a change in the Linux kernel, this only breaks
running as a Xen guest because only Xen seems to emulate non-paging mode
in a way that uses identity-mapped paging. On bare-metal the SMEP bit
has no effect while the CPU is not in paging-mode. So I would not expect
upstream to make any changes for that in Linux code.
** Changed in: linux (Ubuntu)
Status: In Progress => Won't Fix
** Changed in: linux (Ubuntu)
Assignee: Stefan Bader (stefan-bader-canonical) => (unassigned)
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https://bugs.launchpad.net/bugs/1157757
Title:
[Regression] Stuck CPU1-x when booting as Xen HVM guest on certain
Intel hosts
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