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objtool: Add CONFIG_OBJTOOL

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Now that stack validation is an optional feature of objtool, add
CONFIG_OBJTOOL and replace most usages of CONFIG_STACK_VALIDATION with
it.

CONFIG_STACK_VALIDATION can now be considered to be frame-pointer
specific.  CONFIG_UNWINDER_ORC is already inherently valid for live
patching, so no need to "validate" it.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/939bf3d85604b2a126412bf11af6e3bd3b872bcb.1650300597.git.jpoimboe@redhat.com
This commit is contained in:
Josh Poimboeuf 2022-04-18 09:50:36 -07:00 • committed by Peter Zijlstra
parent c2bdd61c98
commit 03f16cd020
17 changed files with 73 additions and 57 deletions
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2
Makefile
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@ -1302,7 +1302,7 @@ install: sub_make_done :=
# ---------------------------------------------------------------------------
# Tools
ifdef CONFIG_STACK_VALIDATION
ifdef CONFIG_OBJTOOL
prepare: tools/objtool
endif