Re: [PATCH v14 1/7] x86/cet/ibt: Add Kconfig option for user-mode Indirect Branch Tracking
From: Cyrill Gorcunov <hidden>
Date: 2020-10-12 19:15:17
Also in:
linux-arch, linux-doc, linux-mm, lkml
On Mon, Oct 12, 2020 at 08:45:24AM -0700, Yu-cheng Yu wrote: ...
+ the application support it. When this feature is enabled, + legacy non-IBT applications continue to work, but without + IBT protection. + Support for this feature is only known to be present on + processors released in 2020 or later. CET features are also + known to increase kernel text size by 3.7 KB.
It seems the last sentence is redundant - new features always bloat the kernel code and precise size may differ depending on compiler and options. Surely this can be patched on top.