[PATCH V2 03/19] vdso: Add CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT
STALE890d
LANDED
From: Adrian Hunter <adrian.hunter@intel.com>
Date: 2024-03-25 06:40:58
Also in:
linux-s390, lkml
Subsystem:
generic vdso library, library code, the rest · Maintainers:
Andy Lutomirski, Thomas Gleixner, Vincenzo Frascino, Andrew Morton, Linus Torvalds
Revision v2 of 2 in this series; landed in mainline as 0c68458b0a58 on 2024-04-08.
Revisions (2)
- v1 [diff vs current]
- v2 current
Add CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT in preparation to add multiplication overflow protection to the VDSO time getter functions. Suggested-by: Thomas Gleixner <redacted> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> --- lib/vdso/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/lib/vdso/Kconfig b/lib/vdso/Kconfig
index d883ac299508..c46c2300517c 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
--
2.34.1