The following commit has been merged into the timers/core branch of tip: Commit-ID: 0c68458b0a5878d735572b4f4d91219a1db7c784 Gitweb: https://git.kernel.org/tip/0c68458b0a5878d735572b4f4d91219a1db7c784 Author: Adrian Hunter <adrian.hunter@xxxxxxxxx> AuthorDate: Mon, 25 Mar 2024 08:40:07 +02:00 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Mon, 08 Apr 2024 15:03:06 +02:00 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@xxxxxxxxxxxxx> Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20240325064023.2997-4-adrian.hunter@xxxxxxxxx --- lib/vdso/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/lib/vdso/Kconfig b/lib/vdso/Kconfig index d883ac2..c46c230 100644 --- a/lib/vdso/Kconfig +++ b/lib/vdso/Kconfig @@ -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
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