| commit | 036608d62a838aeb63cae0adaf8ac773cb53148c | |
| author | Thomas Gleixner <tglx@linutronix.de> | |
| Thu, 3 May 2018 20:09:15 +0000 (3 22:09 +0200) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Tue, 22 May 2018 14:58:01 +0000 (22 16:58 +0200) | ||
| tree | 2e5a88bd00a9c3aaf1ec8b5ea8fbbd98a476fb5d | treesnapshot (tar.gz zip) |
| parent | ea055f7d43fb3a9d56e80d0116104555d6dde3f7 | commitdiff |
prctl: Add force disable speculation
commit 356e4bfff2c5489e016fdb925adbf12a1e3950ee upstream
For certain use cases it is desired to enforce mitigations so they cannot
be undone afterwards. That's important for loader stubs which want to
prevent a child from disabling the mitigation again. Will also be used for
seccomp(). The extra state preserving of the prctl state for SSB is a
preparatory step for EBPF dymanic speculation control.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 356e4bfff2c5489e016fdb925adbf12a1e3950ee upstream
For certain use cases it is desired to enforce mitigations so they cannot
be undone afterwards. That's important for loader stubs which want to
prevent a child from disabling the mitigation again. Will also be used for
seccomp(). The extra state preserving of the prctl state for SSB is a
preparatory step for EBPF dymanic speculation control.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>