Re: [PATCH] arm64: Make CPU_BIG_ENDIAN depend on !LD_IS_LLD
From: Nathan Chancellor <nathan@kernel.org>
Date: 2021-02-02 19:53:12
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On Tue, Feb 02, 2021 at 09:04:34AM +0100, Arnd Bergmann wrote:
On Tue, Feb 2, 2021 at 3:25 AM Nathan Chancellor [off-list ref] wrote:quoted
Similar to commit 28187dc8ebd9 ("ARM: 9025/1: Kconfig: CPU_BIG_ENDIAN depends on !LD_IS_LLD"), ld.lld does not support aarch64 big endian, leading to the following build error when CONFIG_CPU_BIG_ENDIAN is selected: ld.lld: error: unknown emulation: aarch64linuxbWhile this is the original error message I reported, I think it would be better to explain that lld actually does support linking big-endian kernels but they don't boot, for unknown reasons.
That statement seems to contradict what Peter Smith says: https://github.com/ClangBuiltLinux/linux/issues/1288#issuecomment-770693582 https://reviews.llvm.org/D58655#1410282
I can send a patch to address the build error and mark big-endian as "depends on !LD_IS_LLD || COMPILE_TEST" to reflect that and help with randconfig testing.
I have no strong opinion on handling this though. Cheers, Nathan _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel