[PATCH v3 04/17] module: ensure __cfi_check alignment

[Jessica Yu]

+++ Sami Tolvanen [23/03/21 13:39 -0700]:
>CONFIG_CFI_CLANG_SHADOW assumes the __cfi_check() function is page
>aligned and at the beginning of the .text section. While Clang would
>normally align the function correctly, it fails to do so for modules
>with no executable code.
>
>This change ensures the correct __cfi_check() location and
>alignment. It also discards the .eh_frame section, which Clang can
>generate with certain sanitizers, such as CFI.
>
>Link: https://bugs.llvm.org/show_bug.cgi?id=46293
>Signed-off-by: Sami Tolvanen <samitolvanen at google.com>

Acked-by: Jessica Yu <jeyu at kernel.org>

Thanks!