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| author |   Hans de Goede <hdegoede@redhat.com> | 2020-01-15 17:35:45 +0100 |
|---|---|---|
| committer |   Ard Biesheuvel <ardb@kernel.org> | 2020-03-03 10:27:30 +0100 |
| commit | 0e72a6a3cfc3a32273f5e99bfaa4407f4917d343 (patch) | |
| tree | 5d44b2405c3c655701b6a1a72d3100dc4b85d4dd /include/linux/efi.h | |
| parent | Linux 5.6-rc1 (diff) | |
| download | linux-dev-0e72a6a3cfc3a32273f5e99bfaa4407f4917d343.tar.xz linux-dev-0e72a6a3cfc3a32273f5e99bfaa4407f4917d343.zip | |
efi: Export boot-services code and data as debugfs-blobs
Sometimes it is useful to be able to dump the efi boot-services code and
data. This commit adds these as debugfs-blobs to /sys/kernel/debug/efi,
but only if efi=debug is passed on the kernel-commandline as this requires
not freeing those memory-regions, which costs 20+ MB of RAM.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200115163554.101315-2-hdegoede@redhat.com
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'include/linux/efi.h')
| -rw-r--r-- | include/linux/efi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h index 7efd7072cca5..a6e1a2d8511e 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1124,6 +1124,7 @@ extern int __init efi_setup_pcdp_console(char *); #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */ #define EFI_MEM_NO_SOFT_RESERVE 11 /* Is the kernel configured to ignore soft reservations? */ +#define EFI_PRESERVE_BS_REGIONS 12 /* Are EFI boot-services memory segments available? */ #ifdef CONFIG_EFI /* |