Re: [PATCH v2 12/14] arm64: image: Remove endianness handling for generating image header
From: Will Deacon <will@kernel.org>
Date: 2026-09-09 12:28:37
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On Mon, Sep 07, 2026 at 05:37:23PM +0100, Will Deacon wrote:
Since big-endian support for arm64 depends on BROKEN, we don't need to bother jumping through hoops to generate a little-endian kernel image header for a big-endian target. We can just ignore the possibility instead. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Marc Zyngier <maz@kernel.org> Acked-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Will Deacon <will@kernel.org> --- arch/arm64/include/asm/assembler.h | 11 ----------- arch/arm64/kernel/head.S | 4 ++-- arch/arm64/kernel/image.h | 24 ++---------------------- 3 files changed, 4 insertions(+), 35 deletions(-)
I think this is another patch I should drop from the series. I was under the wrong impression that we were using two 32-bit words for symbol addresses because of endianness quirks in the linker, but digging into the original rationale from Ard [1], this is more fundamental to the way in which the PIE toolchain handles ABS64 symbol relocations. Will [1] https://lore.kernel.org/all/CAKv+Gu8vdk-9N_VVG6XWYLp1SM9ynfcsbxwk2xx1mXYq7qN0Cg@mail.gmail.com/ (local)