This enables generation of SFrame V3 stack trace information for VDSO on x86-64. It's a continuation of Josh's and Steve's work:
https://lore.kernel.org/all/[email protected]/ https://lore.kernel.org/all/[email protected]/ This series focuses only on the VDSO code. They are helpful fixes and updates that doesn't rely on sframes (although the last patch is sframe related). This series applies on top of the latest unwind user sframe series "[PATCH v13 00/18] unwind_deferred: Implement sframe handling": https://lore.kernel.org/all/[email protected]/ Like above series it depends on the upcoming binutils 2.46 release to be used to build executables and libraries such as VDSO with SFrame V3 stack trace information (using the assembler option --gsframe-3). Changes in v6: - SFrame V3 support (SFrame V2 is not supported). - Prevent GNU_SFRAME program table entry to empty .sframe section. - Integrate v5 review feedback. (Josh) Regards, Jens Josh Poimboeuf (6): x86/vdso: Fix DWARF generation for getrandom() x86/asm: Avoid emitting DWARF CFI for non-VDSO x86/asm: Simplify VDSO DWARF generation x86/vdso: Use SYM_FUNC_{START,END} in __kernel_vsyscall() x86/vdso: Use CFI macros in __vdso_sgx_enter_enclave() x86/vdso: Enable sframe generation in VDSO arch/Kconfig | 7 +++ arch/x86/entry/vdso/Makefile | 10 +++-- arch/x86/entry/vdso/vdso-layout.lds.S | 9 +++- arch/x86/entry/vdso/vdso32/system_call.S | 10 +---- arch/x86/entry/vdso/vgetrandom-chacha.S | 3 +- arch/x86/entry/vdso/vsgx.S | 19 +++------ arch/x86/include/asm/dwarf2.h | 54 +++++++++++++++++------- arch/x86/include/asm/linkage.h | 33 ++++++++++++--- arch/x86/include/asm/vdso.h | 1 - 9 files changed, 97 insertions(+), 49 deletions(-) -- 2.51.0
