| Date | Thu, 11 Mar 2021 18:47:52 -0800 | From | Kees Cook <> | Subject | Re: [PATCH 14/17] arm64: add __nocfi to functions that jump to a physical address |
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On Thu, Mar 11, 2021 at 04:49:16PM -0800, Sami Tolvanen wrote: > Disable CFI checking for functions that switch to linear mapping and > make an indirect call to a physical address, since the compiler only > understands virtual addresses and the CFI check for such indirect calls > would always fail. > > Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
(I wonder if there is some value in a separate macro for "makes a PA call"? Might other things care about that besides just CFI?)
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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