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| author | Sami Tolvanen <samitolvanen@google.com> | 2022-09-08 23:55:02 +0200 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2022-09-26 19:13:15 +0200 |
| commit | ccace936eec7b805e1ab9268a6d163a00047b3a9 (patch) | |
| tree | 407c8ce8cb9f0b30332323db255d1107bedfea41 /arch/x86/purgatory/Makefile | |
| parent | x86/tools/relocs: Ignore __kcfi_typeid_ relocations (diff) | |
| download | linux-ccace936eec7b805e1ab9268a6d163a00047b3a9.tar.xz linux-ccace936eec7b805e1ab9268a6d163a00047b3a9.zip | |
x86: Add types to indirectly called assembly functions
With CONFIG_CFI_CLANG, assembly functions indirectly called
from C code must be annotated with type identifiers to pass CFI
checking. Define the __CFI_TYPE helper macro to match the compiler
generated function preamble, and ensure SYM_TYPED_FUNC_START also
emits ENDBR with IBT.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Kees Cook <keescook@chromium.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220908215504.3686827-21-samitolvanen@google.com
Diffstat (limited to 'arch/x86/purgatory/Makefile')
0 files changed, 0 insertions, 0 deletions