GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

prctl: Add force disable speculation

Browse source 
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>
This commit is contained in:
Thomas Gleixner 2018-05-03 22:09:15 +02:00
parent f9544b2b07
commit 356e4bfff2
5 changed files with 59 additions and 24 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/uapi/linux/prctl.h
View file

@ -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 */