5.10-stable review patch. If anyone has any objections, please let me know.
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From: Josh Poimboeuf jpoimboe@redhat.com
commit 081df94301e317e84c3413686043987da2c3e39d upstream.
To be used for adding asm functions to the ignore list. The "aw" is needed to help the ELF section metadata match GCC-created sections. Otherwise the linker creates duplicate sections instead of combining them.
Signed-off-by: Josh Poimboeuf jpoimboe@redhat.com Link: https://lore.kernel.org/r/8faa476f9a5ac89af27944ec184c89f95f3c6c49.161126346... Signed-off-by: Daniel Sneddon daniel.sneddon@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/linux/objtool.h | 8 ++++++++ tools/include/linux/objtool.h | 8 ++++++++ 2 files changed, 16 insertions(+)
--- a/include/linux/objtool.h +++ b/include/linux/objtool.h @@ -141,6 +141,12 @@ struct unwind_hint { .popsection .endm
+.macro STACK_FRAME_NON_STANDARD func:req + .pushsection .discard.func_stack_frame_non_standard, "aw" + .long \func - . + .popsection +.endm + #endif /* __ASSEMBLY__ */
#else /* !CONFIG_STACK_VALIDATION */ @@ -158,6 +164,8 @@ struct unwind_hint { .endm .macro ANNOTATE_NOENDBR .endm +.macro STACK_FRAME_NON_STANDARD func:req +.endm #endif
#endif /* CONFIG_STACK_VALIDATION */ --- a/tools/include/linux/objtool.h +++ b/tools/include/linux/objtool.h @@ -141,6 +141,12 @@ struct unwind_hint { .popsection .endm
+.macro STACK_FRAME_NON_STANDARD func:req + .pushsection .discard.func_stack_frame_non_standard, "aw" + .long \func - . + .popsection +.endm + #endif /* __ASSEMBLY__ */
#else /* !CONFIG_STACK_VALIDATION */ @@ -158,6 +164,8 @@ struct unwind_hint { .endm .macro ANNOTATE_NOENDBR .endm +.macro STACK_FRAME_NON_STANDARD func:req +.endm #endif
#endif /* CONFIG_STACK_VALIDATION */