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| author | Thomas Gleixner <tglx@linutronix.de> | 2018-05-03 23:09:15 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-05-05 01:51:43 +0300 |
| commit | 356e4bfff2c5489e016fdb925adbf12a1e3950ee (patch) | |
| tree | 27bfbcbf2c23c3d6cfa0219e93ccf35c2e14f5b3 /include/uapi/linux/prctl.h | |
| parent | f9544b2b076ca90d887c5ae5d74fab4c21bb7c13 (diff) | |
| download | linux-356e4bfff2c5489e016fdb925adbf12a1e3950ee.tar.xz | |
prctl: Add force disable speculation
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>
Diffstat (limited to 'include/uapi/linux/prctl.h')
| -rw-r--r-- | include/uapi/linux/prctl.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/prctl.h b/include/uapi/linux/prctl.h index ebf057ac1346..db9f15f5db04 100644 --- a/include/uapi/linux/prctl.h +++ b/include/uapi/linux/prctl.h @@ -217,5 +217,6 @@ struct prctl_mm_map { # define PR_SPEC_PRCTL (1UL << 0) # define PR_SPEC_ENABLE (1UL << 1) # define PR_SPEC_DISABLE (1UL << 2) +# define PR_SPEC_FORCE_DISABLE (1UL << 3) #endif /* _LINUX_PRCTL_H */ |