Re: [PATCH] kexec: include asm/early_ioremap.h

[Simon Horman <horms@kernel.org>]

On Wed, Apr 23, 2025 at 06:29:18PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The early_memremap() function is decleared in a header that is only indirectly
> included here:
> 
> kernel/kexec_handover.c:1116:8: error: call to undeclared function 'early_memremap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>  1116 |         fdt = early_memremap(fdt_phys, fdt_len);
>       |               ^
> 
> Fixes: 4bfe738ce89a ("kexec: add KHO support to kexec file loads")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Hi Arnd,

I didn't try to reproduce this problem. And perhaps this isn't particularly
important. But, naively, I would have expected the following as it is
the commit the introduces calls to early_memremap() in exec_handover.c.

Fixes: b0a311dba688 ("kexec: add KHO parsing support")