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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2015-08-07 11:36:54 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-08-08 11:37:38 +0300 |
| commit | 87db73aebf55554fefaa3eade0a28f282a1511b8 (patch) | |
| tree | c89c56d45acd7f35e08b9d3ceb941047d396378f /include/linux/efi.h | |
| parent | dd2384a75d1c046faf068a6352732a204814b86d (diff) | |
| download | linux-87db73aebf55554fefaa3eade0a28f282a1511b8.tar.xz | |
efi: Add support for EFI_MEMORY_RO attribute introduced by UEFIv2.5
The UEFI spec v2.5 introduces a new memory attribute
EFI_MEMORY_RO, which is now the preferred attribute to convey
that the nature of the contents of such a region allows it to be
mapped read-only (i.e., it contains .text and .rodata only).
The specification of the existing EFI_MEMORY_WP attribute has been
updated to align more closely with its common use as a
cacheability attribute rather than a permission attribute.
Add the #define and add the attribute to the memory map dumping
routine.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1438936621-5215-1-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@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 85ef051ac6fb..26ca9e2fd30e 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -99,6 +99,7 @@ typedef struct { #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ #define EFI_MEMORY_MORE_RELIABLE \ ((u64)0x0000000000010000ULL) /* higher reliability */ +#define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ #define EFI_MEMORY_DESCRIPTOR_VERSION 1 |