From: Ard Biesheuvel <[email protected]> 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: Ard Biesheuvel <[email protected]> Acked-by: Mark Rutland <[email protected]> Cc: Leif Lindholm <[email protected]> Signed-off-by: Matt Fleming <[email protected]> --- drivers/firmware/efi/arm-runtime.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c index ae001450545f..7c75a8d9091a 100644 --- a/drivers/firmware/efi/arm-runtime.c +++ b/drivers/firmware/efi/arm-runtime.c @@ -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; -- 2.9.3
