Juergen Gross f7c90c2aa4 x86/xen: don't write ptes directly in 32-bit PV guests
In some cases 32-bit PAE PV guests still write PTEs directly instead of
using hypercalls. This is especially bad when clearing a PTE as this is
done via 32-bit writes which will produce intermediate L1TF attackable
PTEs.

Change the code to use hypercalls instead.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2018-08-27 09:31:26 -04:00
..
2018-08-18 11:04:51 -07:00
2018-08-19 10:38:36 -07:00
2018-08-19 10:38:36 -07:00