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x86/stacktrace: Enable HAVE_RELIABLE_STACKTRACE for the ORC unwinder

In SUSE, we need a reliable stack unwinder for kernel live patching, but
we do not want to enable frame pointers for performance reasons. So
after the previous patches to make the ORC reliable, mark ORC as a
reliable stack unwinder on x86.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/lkml/20180518064713.26440-6-jslaby@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Jiri Slaby 7 years ago
parent
d31a580266
commit
6415b38bae
1 changed files with 1 additions and 1 deletions
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  1. 1 1
      arch/x86/Kconfig

+ 1 - 1
arch/x86/Kconfig
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@@ -180,7 +180,7 @@ config X86
 
 	select HAVE_PERF_USER_STACK_DUMP
 
 	select HAVE_PERF_USER_STACK_DUMP
 
 	select HAVE_RCU_TABLE_FREE
 
 	select HAVE_RCU_TABLE_FREE
 
 	select HAVE_REGS_AND_STACK_ACCESS_API
 
 	select HAVE_REGS_AND_STACK_ACCESS_API
 
-	select HAVE_RELIABLE_STACKTRACE		if X86_64 && UNWINDER_FRAME_POINTER && STACK_VALIDATION
 
+	select HAVE_RELIABLE_STACKTRACE		if X86_64 && (UNWINDER_FRAME_POINTER || UNWINDER_ORC) && STACK_VALIDATION
 
 	select HAVE_STACKPROTECTOR		if CC_HAS_SANE_STACKPROTECTOR
 
 	select HAVE_STACKPROTECTOR		if CC_HAS_SANE_STACKPROTECTOR
 
 	select HAVE_STACK_VALIDATION		if X86_64
 
 	select HAVE_STACK_VALIDATION		if X86_64
 
 	select HAVE_RSEQ
 
 	select HAVE_RSEQ