On 02/17/2016 03:49 PM, Borislav Petkov wrote:
On Wed, Feb 17, 2016 at 12:07:13PM -0800, Luis R. Rodriguez wrote:
OK so here's a wiki to keep track of progress of the difference uses:
http://kernelnewbies.org/KernelProjects/remove-paravirt-enabled
It seems we have a resolution one way or another for all except for
the use on arch/x86/mm/dump_pagetables.c, is that right?
Why not?
I think we should simply check the range as ffff800000000000 -
ffff87ffffffffff is practically an ABI and nothing should be mapped
^^^^^^^^^
That's exactly the point: if something is mapped it's an error for a
non-PV kernel.
By removing paravirt_enabled() we may miss those errors. Worse, I think
we may even crash while doing pagetable walk (although it's probably
better to crash here than to use an unexpected translation in real code
somewhere)
-boris
there anyway. No need for paravirt_enabled() there either.
