Christophe Leroy wrote:
Le 29/08/2022 à 07:52, Sathvika Vasireddy a écrit :
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 4c466acdc70d..dc05cd23c233 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -237,6 +237,7 @@ config PPC
select HAVE_MOD_ARCH_SPECIFIC
select HAVE_NMI if PERF_EVENTS || (PPC64 &&
PPC_BOOK3S)
select HAVE_OPTPROBES
+ select HAVE_OBJTOOL if PPC32 || MPROFILE_KERNEL
Why restrict it to MPROFILE_KERNEL ? In your RFC it was for all PPC64.
Recent discussion on the list shows new problem with recordmcount, see
https://lore.kernel.org/all/mw5pr84mb184250ea1cae04497c1e7ce9ab...@mw5pr84mb1842.namprd84.prod.outlook.com/
Those ones are with ppc64 big endian, so objtool would be welcome here
as well.
I don't think adding support for objtool on ppc64 elfv1 is a good idea.
While it might solve the immediate issue with recordmcount, I worry that
the function descriptors and dot symbols in ppc64 elfv1 might throw up
issues in the future causing maintenance overhead.
- Naveen
