Re: [PATCH v4 04/15] cfi: Add DEFINE_CFI_IMMEDIATE_RETURN_STUB

On Thu, Sep 30, 2021 at 11:50 AM Nick Desaulniers
[off-list ref] wrote:

On Thu, Sep 30, 2021 at 11:05 AM Sami Tolvanen [off-list ref] wrote:

quoted

This change introduces the DEFINE_CFI_IMMEDIATE_RETURN_STUB macro,
which defines a stub function that immediately returns and when
defined in the core kernel, always passes indirect call checking
with CONFIG_CFI_CLANG. Note that this macro should only be used when
a stub cannot be called using the correct function type.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>

Seems like the only use is in patch 5/15. Probably could be squashed...

I would prefer to keep these separate, but if everyone thinks that's
unnecessary, I'm happy to combine them.

Sami