On 22.01.2025 03:31, Josh Poimboeuf wrote:
Enable sframe generation in the VDSO library so kernel and user space
can unwind through it.
Signed-off-by: Josh Poimboeuf <jpoim...@kernel.org>
...
diff --git a/arch/x86/include/asm/dwarf2.h b/arch/x86/include/asm/dwarf2.h
index b195b3c8677e..1c354f648505 100644
--- a/arch/x86/include/asm/dwarf2.h
+++ b/arch/x86/include/asm/dwarf2.h
@@ -12,8 +12,11 @@
* For the vDSO, emit both runtime unwind information and debug
* symbols for the .dbg file.
*/
-
Nit: Deleted blank line you introduced in "[PATCH v4 05/39] x86/asm:
Avoid emitting DWARF CFI for non-VDSO".
+#ifdef __x86_64__
#if defined(__x86_64__) && defined(CONFIG_AS_SFRAME)
AFAIK the kernel has a minimum binutils requirement of 2.25 [1]
and assembler option "--gsframe" as well as directive
".cfi_sections .sframe" were introduced with 2.40.
+ .cfi_sections .eh_frame, .debug_frame, .sframe
+#else
.cfi_sections .eh_frame, .debug_frame
+#endif
#define CFI_STARTPROC .cfi_startproc
#define CFI_ENDPROC .cfi_endproc
[1]: https://docs.kernel.org/process/changes.html
Regards,
Jens
--
Jens Remus
Linux on Z Development (D3303)
+49-7031-16-1128 Office
jre...@de.ibm.com
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