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Commit 9d80448a authored by Ard Biesheuvel's avatar Ard Biesheuvel Committed by Matt Fleming
Browse files

efi/arm64: Add debugfs node to dump UEFI runtime page tables 



Register the debugfs node 'efi_page_tables' to allow the UEFI runtime
page tables to be inspected. Note that ARM does not have 'asm/ptdump.h'
[yet] so for now, this is arm64 only.

Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: default avatarMatt Fleming <matt@codeblueprint.co.uk>
parent 15cf7cae

drivers/firmware/efi/arm-runtime.c

+20 −0
Original line number Diff line number Diff line
@@ -39,6 +39,26 @@ static struct mm_struct efi_mm = { 
	.mmlist			= LIST_HEAD_INIT(efi_mm.mmlist),

};



#ifdef CONFIG_ARM64_PTDUMP

#include <asm/ptdump.h>



static struct ptdump_info efi_ptdump_info = {

	.mm		= &efi_mm,

	.markers	= (struct addr_marker[]){

		{ 0,		"UEFI runtime start" },

		{ TASK_SIZE_64,	"UEFI runtime end" }

	},

	.base_addr	= 0,

};



static int __init ptdump_init(void)

{

	return ptdump_register(&efi_ptdump_info, "efi_page_tables");

}

device_initcall(ptdump_init);



#endif



static bool __init efi_virtmap_init(void)

{

	efi_memory_desc_t *md;