The hypercall page only needs to be executable but currently it is setup to
be writable as well. Fix the issue.
Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org>
Acked-by: NKees Cook <keescook@chromium.org>
Reported-by: NStephen Hemminger <stephen@networkplumber.org>
Tested-by: NStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>