On Wed, Feb 14, 2024 at 02:43:28PM +0100, Heiko Carstens wrote: > On Wed, Feb 07, 2024 at 05:14:52PM -0700, Nathan Chancellor wrote: > > Hi all, > > > > This series allows the s390 kernel to be linked with ld.lld (support for > > s390 is under review at [1]). This implicitly depends on [2], which was > > created and sent before it was realized that this series was necessary. > ... > > Nathan Chancellor (11): > > s390: boot: Add support for CONFIG_LD_ORPHAN_WARN > > s390: vmlinux.lds.S: Handle '.data.rel' sections explicitly > > s390: vmlinux.lds.S: Explicitly handle '.got' and '.plt' sections > > s390: vmlinux.lds.S: Discard unnecessary sections > > s390/boot: vmlinux.lds.S: Handle '.init.text' > > s390/boot: vmlinux.lds.S: Handle '.rela' sections > > s390/boot: vmlinux.lds.S: Handle DWARF debug sections > > s390/boot: vmlinux.lds.S: Handle ELF required sections > > s390/boot: vmlinux.lds.S: Handle commonly discarded sections > > s390: Select CONFIG_ARCH_WANT_LD_ORPHAN_WARN > > s390: Link vmlinux with '-z notext' > > > > arch/s390/Kconfig | 1 + > > arch/s390/Makefile | 2 +- > > arch/s390/boot/Makefile | 5 +++-- > > arch/s390/boot/vmlinux.lds.S | 28 ++++++++++++++++++++++++++++ > > arch/s390/kernel/vmlinux.lds.S | 28 +++++++++++++++++++++++++++- > > 5 files changed, 60 insertions(+), 4 deletions(-) > > Now available at: > https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/log/?h=features > > And should be in linux-next soon. > > Thanks a lot! :) Thank you for bearing with the issues that came up in the series and getting it reviewed and accepted quickly! The ld.lld pull request has been merged into main: https://github.com/llvm/llvm-project/commit/fe3406e349884e4ef61480dd0607f1e237102c74 and Fangrui requested a backport to 18.1.0, so it is possible that people will get access to this even quicker: https://github.com/llvm/llvm-project/pull/81675 I did not CC you all on this one but it is needed to avoid a link error with ld.lld when CONFIG_DEBUG_INFO_BTF is enabled but it is not specific to s390 so it will go via the kbuild tree (hopefully for 6.8): https://lore.kernel.org/20240212-fix-elf-type-btf-vmlinux-bin-o-big-endian-v2-1-22c0a6352069@xxxxxxxxxx/ With that change on top of features, all my builds pass successfully with ld.lld :) I'll be sending another change your way shortly for something that came up during my testing with GCC + ld.lld. Cheers, Nathan
