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xen-devel
[Xen-devel] Re: __supported_pte_mask breaks PROT_NONE pages
Ingo Molnar wrote:
* Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
Ingo Molnar wrote:
btw., did you actually see a boot crash due to this, on a pre-PGE system?
No, under Xen, since it also disables PGE.
but it was a boot crash, right? Such info is useful in the first line of a
commit message:
Impact: fix non-PGE boot crash
(that also makes it less likely that the commit is under-prioritized.)
It's not immediate; in early usermode. It only happens when using a
populated PROTNONE page, which is actually pretty rare, it seems -
perhaps made more common by the new mlock code. But, yes, it stopped my
machine from booting.
J
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