Pull x86/pti update from Thomas Gleixner: "Just a single change from the anti-performance departement: - Add a new PR_SPEC_DISABLE_NOEXEC option which allows to apply the speculation protections on a process without inheriting the state on exec. This remedies a situation where a Java-launcher has speculation protections enabled because that's the default for JVMs which causes the launched regular harmless processes to inherit the protection state which results in unintended performance degradation" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/speculation: Add PR_SPEC_DISABLE_NOEXEC
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| @@ -219,6 +219,7 @@ struct prctl_mm_map { · 218 unmodified lines | ||
| 219 | 219 | # define PR_SPEC_ENABLE (1UL << 1) |
| 220 | 220 | # define PR_SPEC_DISABLE (1UL << 2) |
| 221 | 221 | # define PR_SPEC_FORCE_DISABLE (1UL << 3) |
| 222 | +# define PR_SPEC_DISABLE_NOEXEC (1UL << 4) | |
| 222 | 223 | |
| 223 | 224 | /* Reset arm64 pointer authentication keys */ |
| 224 | 225 | #define PR_PAC_RESET_KEYS 54 |