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| author |   Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-08-16 14:13:21 +0200 |
|---|---|---|
| committer |   Matt Fleming <matt@codeblueprint.co.uk> | 2016-09-09 16:08:51 +0100 |
| commit | 9d80448ac92b720512c415265597d349d8b5c3e8 (patch) | |
| tree | efafa5259fed5072fc5fa90793dd616babad0681 /drivers/firmware | |
| parent | x86/efi: Remove unused find_bits() function (diff) | |
| download | linux-dev-9d80448ac92b720512c415265597d349d8b5c3e8.tar.xz linux-dev-9d80448ac92b720512c415265597d349d8b5c3e8.zip | |
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: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/efi/arm-runtime.c | 20 |
1 files changed, 20 insertions, 0 deletions
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; |