Re: [PATCH] compiler.h: Raise minimum version of GCC to 5.1 for arm64
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From: Linus Torvalds <torvalds@linux-foundation.org>
Date: 2021-01-15 23:25:29
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On Thu, Jan 14, 2021 at 4:30 PM Joe Perches [off-list ref] wrote:
KASAN v5 instead of all the old versions gcc 7.1 supports fallthrough.
Considering that most people won't even enable KASAN, I think that's not a huge reason to then force people to potentially upgrade their compilers. That said, I do think that it might be good to just try to standardize on the KASAN v5 code - but that could easily be done by simply making KASAN depend as a feature on having a newer compiler version. So the KASAN option itself could just have something like depends on !CC_IS_GCC || GCC_VERSION >= 70000 in it, which would allow us to just say "only v5 need apply". As to "fallthrough", I think it's more than enough that lots of people build with compilers that support it, and then any warnings they see will be fixed. No need to force upgrades - it doesn't buy kernel developers anything. Linus _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel