Changes in Kconfig

f048158c - MIPS: remove CONFIG_MIPS_LD_CAN_LINK_VDSO

Fri, 20 Jan 2023 06:33:51 +0000

MIPS: remove CONFIG_MIPS_LD_CAN_LINK_VDSOGiven commit e4412739472b ("Documentation: raise minimum supportedversion of binutils to 2.25"), CONFIG_MIPS_LD_CAN_LINK_VDSO is always'y'.Signed-off-by: Masahiro Yamada Reviewed-by: Nathan Chancellor Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/vdso/Kconfig

052c805a - kbuild: LD_VERSION redenomination

Sat, 12 Dec 2020 16:54:30 +0000

kbuild: LD_VERSION redenominationCommit ccbef1674a15 ("Kbuild, lto: add ld-version and ld-ifversionmacros") introduced scripts/ld-version.sh for GCC LTO.At that time, this script handled 5 version fields because GCC LTOneeded the downstream binutils. (https://lkml.org/lkml/2014/4/8/272)The code snippet from the submitted patch was as follows: # We need HJ Lu's Linux binutils because mainline binutils does not # support mixing assembler and LTO code in the same ld -r object. # XXX check if the gcc plugin ld is the expected one too # XXX some Fedora binutils should also support it. How to check for that? ifeq ($(call ld-ifversion,-ge,22710001,y),y) ...However, GCC LTO was not merged into the mainline after all.(https://lkml.org/lkml/2014/4/8/272)So, the 4th and 5th fields were never used, and finally removed bycommit 0d61ed17dd30 ("ld-version: Drop the 4th and 5th versioncomponents").Since then, the last 4-digits returned by this script is always zeros.Remove the meaningless last 4-digits. This makes the version formatconsistent with GCC_VERSION, CLANG_VERSION, LLD_VERSION.Signed-off-by: Masahiro Yamada Acked-by: Will Deacon Acked-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/vdso/Kconfig

22235ef3 - MIPS: VDSO: Allow ld.lld to link the VDSO

Tue, 28 Apr 2020 22:14:19 +0000

MIPS: VDSO: Allow ld.lld to link the VDSOCurrently, when linking with ld.lld, this warning pops up: arch/mips/vdso/Makefile:70: MIPS VDSO requires binutils >= 2.25CONFIG_LD_VERSION is set with scripts/ld-version.sh, which is specificto GNU ld. It returns 0 for ld.lld so CONFIG_MIPS_LD_CAN_LINK_VDSO doesnot set.ld.lld has a completely different versioning scheme (as it followsLLVM's versioning) and it does not have the issue mentioned in thecomment block so it should be allowed to link the VDSO.With this patch, the VDSO successfully links and shows P_MIPS_PC32 invgettimeofday.o.$ llvm-objdump -Dr arch/mips/vdso/vgettimeofday.o | grep R_MIPS_PC32 00000024: R_MIPS_PC32 _start 000000b0: R_MIPS_PC32 _start 000002bc: R_MIPS_PC32 _start 0000036c: R_MIPS_PC32 _start 00000468: R_MIPS_PC32 _startReported-by: Dmitry Golovin Signed-off-by: Nathan Chancellor Link: https://github.com/ClangBuiltLinux/linux/issues/785Link: https://github.com/llvm/llvm-project/commit/e364e2e9ce50c12eb2bf093560e1a1a8544d455aSigned-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/vdso/Kconfig

e91946d6 - MIPS: VDSO: Move disabling the VDSO logic to Kconfig

Tue, 28 Apr 2020 22:14:16 +0000

MIPS: VDSO: Move disabling the VDSO logic to KconfigAfter commit 9553d16fa671 ("init/kconfig: Add LD_VERSION Kconfig"), wehave access to GNU ld's version at configuration time. As a result, wecan make it clearer under what configuration circumstances the MIPS VDSOneeds to be disabled.This is a prerequisite for getting rid of the MIPS VDSO binutilswarning and linking the VDSO when LD is ld.lld. Wrapping the call told-ifversion with CONFIG_LD_IS_LLD does not work because the configvalues are wiped away during 'make clean'.Signed-off-by: Nathan Chancellor Signed-off-by: Thomas Bogendoerfer List of files: /linux-6.15/arch/mips/vdso/Kconfig