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.