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* LLD patches for x86_64
@ 2019-04-11  3:51 Nathan Chancellor
  2019-04-11 13:58 ` Sasha Levin
  2019-04-17 18:24 ` Greg Kroah-Hartman
  0 siblings, 2 replies; 7+ messages in thread
From: Nathan Chancellor @ 2019-04-11  3:51 UTC (permalink / raw)
  To: Greg Kroah-Hartman, Sasha Levin
  Cc: stable, Alistair Strachan, Sami Tolvanen, Nick Desaulniers

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Hi Greg and Sasha,

Please apply the following mbox files to their respective trees. They
contain upstream patches that allow a tip of tree LLD to link an x86
kernel image as well as a patch to avoid using $(LD) to check for
the location of binutils, which won't always be accurate when linking
with LLD. This was tested with both the upstream defconfig and Android's
x86_64_cuttlefish_defconfig in their respective trees (building/linking
with both Clang/LLD and GCC/ld.bfd then booting in QEMU).

For 5.0, a simple cherry-pick of commit ad15006cc784 ("kbuild: clang:
choose GCC_TOOLCHAIN_DIR not on LD") will do.

Greg, the merge into kernel/common will result in two conflicts:

* Makefile:
    Make the diff match upstream commit
        ad15006cc784 ("kbuild: clang: choose GCC_TOOLCHAIN_DIR not on LD")

* arch/x86/entry/vdso/Makefile:
    Take the right hand side, effectively replacing common commit
        35b779802c2e ("x86: vdso: Fix leaky vdso linker with CC=clang.")
    with the proper upstream commit
        379d98ddf413 ("x86: vdso: Use $LD instead of $CC to link")

Also, while you are at it, would you mind picking up upstream commit
5f074f3e192f ("lib/string.c: implement a basic bcmp")? It is cc'd for
stable but it's worth mentioning now so we can stop carrying it out of
tree :)

Let me know if there are any issues, comments, or concerns,
Nathan

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^ permalink raw reply	[flat|nested] 7+ messages in thread

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Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-04-11  3:51 LLD patches for x86_64 Nathan Chancellor
2019-04-11 13:58 ` Sasha Levin
2019-04-11 14:21   ` Nathan Chancellor
2019-04-11 14:25   ` Nathan Chancellor
2019-04-11 14:39     ` Sasha Levin
2019-04-17 18:24 ` Greg Kroah-Hartman
2019-04-17 18:37   ` Nathan Chancellor

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