On Thu, 17 Dec 2020 16:24:32 -0800, Nick Desaulniers wrote:
With GNU binutils 2.35+, linking with BFD produces warnings for vmlinux: aarch64-linux-gnu-ld: warning: -z norelro ignored
BFD can produce this warning when the target emulation mode does not support RELRO program headers, and -z relro or -z norelro is passed.
Alan Modra clarifies: The default linker emulation for an aarch64-linux ld.bfd is -maarch64linux, the default for an aarch64-elf linker is -maarch64elf. They are not equivalent. If you choose -maarch64elf you get an emulation that doesn't support -z relro.
[...]
Applied to arm64 (for-next/fixes), thanks!
[1/1] arm64: link with -z norelro for LLD or aarch64-elf https://git.kernel.org/arm64/c/311bea3cb9ee
Also added the second Fixes tag with a cc stable.