Re: [Lguest/x86]: Clash with ioremap_nocache() + _PAGE_PWT

Ingo Molnar
2008-02-07T00:25:44Z

* Ahmed S. Darwish <darwish.07@gmail.com> wrote:

> Hi all,
>
> Beginning from commit 4138cc3418f5, ioremap_nocache() sets the _PAGE_PWT
> flag.
>
> Lguest doesn't accept a guest pte with a _PWT flag and reports a "bad
> page table entry" in that case.
>
> I've removed check from lguest code and everything worked fine. Is
> this safe from the Lguest side ?

yes, should be safe. Could you send a patch so that others can apply it
too?

Ingo