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| author |   Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com> | 2017-06-26 14:49:46 +0200 |
|---|---|---|
| committer |   Juergen Gross <jgross@suse.com> | 2017-07-03 13:26:17 +0200 |
| commit | c54590cac51db8ab5fd30156bdaba34af915e629 (patch) | |
| tree | 675db462622402556032c4d798641f728882be8a /drivers/xen/manage.c | |
| parent | x86: xen: remove unnecessary variable in xen_foreach_remap_area() (diff) | |
| download | linux-dev-c54590cac51db8ab5fd30156bdaba34af915e629.tar.xz linux-dev-c54590cac51db8ab5fd30156bdaba34af915e629.zip | |
x86/xen: allow userspace access during hypercalls
Userspace application can do a hypercall through /dev/xen/privcmd, and
some for some hypercalls argument is a pointers to user-provided
structure. When SMAP is supported and enabled, hypervisor can't access.
So, lets allow it.
The same applies to HYPERVISOR_dm_op, where additionally privcmd driver
carefully verify buffer addresses.
Cc: stable@vger.kernel.org
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers/xen/manage.c')
0 files changed, 0 insertions, 0 deletions