x86/mmiotrace: Lock down the testmmiotrace module

The testmmiotrace module shouldn't be permitted when the kernel is locked
down as it can be used to arbitrarily read and write MMIO space. This is
a runtime check rather than buildtime in order to allow configurations
where the same kernel may be run in both locked down or permissive modes
depending on local policy.

Suggested-by: Thomas Gleixner <[email protected]>
Signed-off-by: David Howells <[email protected]
Signed-off-by: Matthew Garrett <[email protected]>
Acked-by: Steven Rostedt (VMware) <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
cc: Thomas Gleixner <[email protected]>
cc: Steven Rostedt <[email protected]>
cc: Ingo Molnar <[email protected]>
cc: "H. Peter Anvin" <[email protected]>
cc: [email protected]
Signed-off-by: James Morris <[email protected]>

0 files changed, 0 insertions, 0 deletions