]> www.infradead.org Git - users/dwmw2/linux.git/commit
mm: security: Check early if HARDENED_USERCOPY is enabled
authorMel Gorman <mgorman@techsingularity.net>
Thu, 23 Jan 2025 22:11:14 +0000 (22:11 +0000)
committerKees Cook <kees@kernel.org>
Fri, 28 Feb 2025 19:51:31 +0000 (11:51 -0800)
commit496d2d23886436f7c651bf4c14950eb002815c61
tree523dfc03bdca78d94eb22f1b93e29d6f34b48f28
parentd2132f453e3308adc82ab7c101bd5220a9a34167
mm: security: Check early if HARDENED_USERCOPY is enabled

HARDENED_USERCOPY is checked within a function so even if disabled, the
function overhead still exists. Move the static check inline.

This is at best a micro-optimisation and any difference in performance
was within noise but it is relatively consistent with the init_on_*
implementations.

Suggested-by: Kees Cook <kees@kernel.org>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Link: https://lore.kernel.org/r/20250123221115.19722-4-mgorman@techsingularity.net
Signed-off-by: Kees Cook <kees@kernel.org>
include/linux/ucopysize.h
mm/usercopy.c