[PATCH 7/8] riscv: Kconfig: enable HAVE_RELIABLE_STACKTRACE and HAVE_LIVEPATCH
From: Wang Han <hidden>
Date: 2026-05-27 12:35:50
Also in:
linux-kselftest, linux-perf-users, linux-riscv, live-patching, lkml
Subsystem:
risc-v architecture, the rest · Maintainers:
Paul Walmsley, Palmer Dabbelt, Albert Ou, Linus Torvalds
Now that the metadata frame records, the kunwind state machine and
arch_stack_walk_reliable() are all in place, advertise the capability
to the rest of the kernel:
* select HAVE_RELIABLE_STACKTRACE under FRAME_POINTER && 64BIT, so
only the configurations that actually have the metadata records
and the FP-based reliable walker enable it.
* select HAVE_LIVEPATCH under the same condition and source
kernel/livepatch/Kconfig so the livepatch menu is reachable from
the RISC-V configuration.
This is split out from the unwinder change so the policy decision and
the implementation can be reviewed and reverted independently.
Signed-off-by: Wang Han <redacted>
---
arch/riscv/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 674044754378..2921680d2132 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig@@ -185,6 +185,7 @@ config RISCV select HAVE_KRETPROBES # https://github.com/ClangBuiltLinux/linux/issues/1881 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if !LD_IS_LLD + select HAVE_LIVEPATCH if FRAME_POINTER && 64BIT select HAVE_MOVE_PMD select HAVE_MOVE_PUD select HAVE_PAGE_SIZE_4KB
@@ -195,6 +196,7 @@ config RISCV select HAVE_POSIX_CPU_TIMERS_TASK_WORK select HAVE_PREEMPT_DYNAMIC_KEY select HAVE_REGS_AND_STACK_ACCESS_API + select HAVE_RELIABLE_STACKTRACE if FRAME_POINTER && 64BIT select HAVE_RETHOOK select HAVE_RSEQ select HAVE_RUST if RUSTC_SUPPORTS_RISCV && CC_IS_CLANG
@@ -1394,3 +1396,5 @@ endmenu # "CPU Power Management" source "arch/riscv/kvm/Kconfig" source "drivers/acpi/Kconfig" + +source "kernel/livepatch/Kconfig"
--
2.43.0