Commit 0c68458b authored by Adrian Hunter's avatar Adrian Hunter Committed by Thomas Gleixner
Browse files

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: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240325064023.2997-4-adrian.hunter@intel.com
parent 5b26ef66

lib/vdso/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -30,4 +30,11 @@ config GENERIC_VDSO_TIME_NS 
	  Selected by architectures which support time namespaces in the

	  VDSO



config GENERIC_VDSO_OVERFLOW_PROTECT

	bool

	help

	  Select to add multiplication overflow protection to the VDSO

	  time getter functions for the price of an extra conditional

	  in the hotpath.



endif