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allows specifying that the speculative store bypass disable bit should
be cleared on exec. see
linux commit 71368af9027f18fe5d1c6f372cfdff7e4bde8b48
x86/speculation: Add PR_SPEC_DISABLE_NOEXEC
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aarch64 pointer authentication code related prctl that allows
reinitializing the key for the thread, added in linux commit
ba830885656414101b2f8ca88786524d4bb5e8c1
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prctls to allow per task control of indirect branch speculation on x86.
added in linux commit 9137bb27e60e554dab694eafa4cca241fa3a694f
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PR_{SET,GET}_SPECULATION_CTRL controls speculation related vulnerability
mitigations, new in commits
b617cfc858161140d69cc0b5cc211996b557a1c7
356e4bfff2c5489e016fdb925adbf12a1e3950ee
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PR_SVE_SET_VL and PR_SVE_GET_VL controls are new in linux commit
2d2123bc7c7f843aa9db87720de159a049839862
related PR_SVE_* macros were added in
7582e22038a266444eb87bc07c372592ad647439
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ambient capability mask is new in linux v4.3, commit
58319057b7847667f0c9585b9de0e8932b0fdb08
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new in linux v4.0, commit 9791554b45a2acc28247f66a5fd5bbc212a6b8c8
used to work around a floating-point abi issue on mips
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new in linux v3.19, commit fe3d197f84319d3bce379a9c0dc17b1f48ad358c
used for on-demand kernel allocation of bounds tables for mpx on x86
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PR_SET_MM_MAP was introduced as a subcommand for PR_SET_MM in
linux v3.18 commit f606b77f1a9e362451aca8f81d8f36a3a112139e
the associated struct type is replicated in sys/prctl.h using
libc types.
example usage:
struct prctl_mm_map *p;
...
prctl(PR_SET_MM, PR_SET_MM_MAP, p, sizeof *p);
the kernel side supported struct size may be queried with
the PR_SET_MM_MAP_SIZE subcommand.
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they can be used to set or query if transparent huge pages are disabled.
introduced in linux 3.15 commit a0715cc22601e8830ace98366c0c2bd8da52af52
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