Commit 2931ea84 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Rob Herring
Browse files

riscv: Remove non-standard linux,elfcorehdr handling 



RISC-V uses platform-specific code to locate the elf core header in
memory.  However, this does not conform to the standard
"linux,elfcorehdr" DT bindings, as it relies on a reserved memory node
with the "linux,elfcorehdr" compatible value, instead of on a
"linux,elfcorehdr" property under the "/chosen" node.

The non-compliant code can just be removed, as the standard behavior is
already implemented by platform-agnostic handling in the FDT core code.

Fixes: 56409750 ("RISC-V: Add crash kernel support")
Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarPalmer Dabbelt <palmerdabbelt@google.com>
Acked-by: default avatarPalmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/41c75d6ee3114ae6304f8afe0051895af91200ee.1628670468.git.geert+renesas@glider.be
parent bf2e8609

arch/riscv/mm/init.c

+0 −20
Original line number Diff line number Diff line
@@ -829,26 +829,6 @@ static void __init reserve_crashkernel(void) 
}

#endif /* CONFIG_KEXEC_CORE */



#ifdef CONFIG_CRASH_DUMP

/*

 * We keep track of the ELF core header of the crashed

 * kernel with a reserved-memory region with compatible

 * string "linux,elfcorehdr". Here we register a callback

 * to populate elfcorehdr_addr/size when this region is

 * present. Note that this region will be marked as

 * reserved once we call early_init_fdt_scan_reserved_mem()

 * later on.

 */

static int __init elfcore_hdr_setup(struct reserved_mem *rmem)

{

	elfcorehdr_addr = rmem->base;

	elfcorehdr_size = rmem->size;

	return 0;

}



RESERVEDMEM_OF_DECLARE(elfcorehdr, "linux,elfcorehdr", elfcore_hdr_setup);

#endif



void __init paging_init(void)

{

	setup_bootmem();