Commit e513ffd8 authored by Wang Kefeng's avatar Wang Kefeng Committed by Russell King (Oracle)
Browse files

ARM: 9255/1: efi/dump UEFI runtime page tables for ARM 



UEFI runtime page tables dump only for ARM64 at present,
but ARM support EFI and ARM_PTDUMP_DEBUGFS now. Since
ARM could potentially execute with a 1G/3G user/kernel
split, choosing 1G as the upper limit for UEFI runtime
end, with this, we could enable UEFI runtime page tables
on ARM.

Acked-by: default avatarArd Biesheuvel <ardb@kernel.org>
Tested-by: default avatarArd Biesheuvel <ardb@kernel.org>
Signed-off-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: default avatarRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
parent b40b84b1

arch/arm/include/asm/ptdump.h

+1 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ struct ptdump_info { 


void ptdump_walk_pgd(struct seq_file *s, struct ptdump_info *info);

#ifdef CONFIG_ARM_PTDUMP_DEBUGFS

#define EFI_RUNTIME_MAP_END	SZ_1G

void ptdump_debugfs_register(struct ptdump_info *info, const char *name);

#else

static inline void ptdump_debugfs_register(struct ptdump_info *info,

arch/arm64/include/asm/ptdump.h

+1 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ struct ptdump_info { 


void ptdump_walk(struct seq_file *s, struct ptdump_info *info);

#ifdef CONFIG_PTDUMP_DEBUGFS

#define EFI_RUNTIME_MAP_END	DEFAULT_MAP_WINDOW_64

void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name);

#else

static inline void ptdump_debugfs_register(struct ptdump_info *info,

drivers/firmware/efi/arm-runtime.c

+2 −2
Original line number Diff line number Diff line
@@ -25,14 +25,14 @@ 
#include <asm/mmu.h>

#include <asm/pgalloc.h>



#if defined(CONFIG_PTDUMP_DEBUGFS) && defined(CONFIG_ARM64)

#if defined(CONFIG_PTDUMP_DEBUGFS) || defined(CONFIG_ARM_PTDUMP_DEBUGFS)

#include <asm/ptdump.h>



static struct ptdump_info efi_ptdump_info = {

	.mm		= &efi_mm,

	.markers	= (struct addr_marker[]){

		{ 0,				"UEFI runtime start" },

		{ DEFAULT_MAP_WINDOW_64,	"UEFI runtime end" },

		{ EFI_RUNTIME_MAP_END,		"UEFI runtime end" },

		{ -1,				NULL }

	},

	.base_addr	= 0,