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sys/prctl.h: add PR_SPEC_INDIRECT_BRANCH from linux v4.20 

prctls to allow per task control of indirect branch speculation on x86.

added in linux commit 9137bb27e60e554dab694eafa4cca241fa3a694f
This commit is contained in:
Szabolcs Nagy 2019-01-23 20:50:55 +00:00 committed by Rich Felker
parent 0b026bbd69
commit 13c73da72f
1 changed files with 1 additions and 0 deletions
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include/sys/prctl.h
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@ -139,6 +139,7 @@ struct prctl_mm_map {
#define PR_GET_SPECULATION_CTRL 52
#define PR_SET_SPECULATION_CTRL 53
#define PR_SPEC_STORE_BYPASS 0
#define PR_SPEC_INDIRECT_BRANCH 1
#define PR_SPEC_NOT_AFFECTED 0
#define PR_SPEC_PRCTL (1UL << 0)
#define PR_SPEC_ENABLE (1UL << 1)