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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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vdso: Add CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT

Add CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT in preparation to add
multiplication overflow protection to the VDSO time getter functions.

Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240325064023.2997-4-adrian.hunter@intel.com

authored by

Adrian Hunter and committed by
Thomas Gleixner 0c68458b 5b26ef66

+7
+7
lib/vdso/Kconfig
··· 30 30 Selected by architectures which support time namespaces in the 31 31 VDSO 32 32 33 + config GENERIC_VDSO_OVERFLOW_PROTECT 34 + bool 35 + help 36 + Select to add multiplication overflow protection to the VDSO 37 + time getter functions for the price of an extra conditional 38 + in the hotpath. 39 + 33 40 endif