This is a note to let you know that I've just added the patch titled
riscv: Require FRAME_POINTER for some configurations
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
riscv-require-frame_pointer-for-some-configurations.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 85508668d11e9bb3391024fb347bc681bfcaed4d
Author: Björn Töpel <bjorn@xxxxxxxxxxxx>
Date: Wed Aug 23 10:28:45 2023 +0200
riscv: Require FRAME_POINTER for some configurations
[ Upstream commit 9f944d2e0ab39296bfadb29167dc333815ba9f48 ]
Some V configurations implicitly turn on '-fno-omit-frame-pointer',
but leaving FRAME_POINTER disabled. This makes it hard to reason about
the FRAME_POINTER config, and also triggers build failures introduced
in by the commit in the Fixes: tag.
Select FRAME_POINTER explicitly for these configurations.
Fixes: ebc9cb03b21e ("riscv: stack: Fixup independent softirq stack for CONFIG_FRAME_POINTER=n")
Signed-off-by: Björn Töpel <bjorn@xxxxxxxxxxxx>
Tested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230823082845.354839-1-bjorn@xxxxxxxxxx
Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index bea7b73e895dd..ab099679f808c 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -62,6 +62,7 @@ config RISCV
select COMMON_CLK
select CPU_PM if CPU_IDLE || HIBERNATION
select EDAC_SUPPORT
+ select FRAME_POINTER if PERF_EVENTS || (FUNCTION_TRACER && !DYNAMIC_FTRACE)
select GENERIC_ARCH_TOPOLOGY
select GENERIC_ATOMIC64 if !64BIT
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 6ec6d52a41804..1329e060c5482 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -87,9 +87,6 @@ endif
ifeq ($(CONFIG_CMODEL_MEDANY),y)
KBUILD_CFLAGS += -mcmodel=medany
endif
-ifeq ($(CONFIG_PERF_EVENTS),y)
- KBUILD_CFLAGS += -fno-omit-frame-pointer
-endif
# Avoid generating .eh_frame sections.
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables
