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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2015-10-19 13:19:36 (GMT) |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2015-10-19 16:54:41 (GMT) |
| commit | 9d372c9fab34cd8803141871195141995f85c7f7 (patch) | |
| tree | addabfafd3a42eef113fe9e80c3cacaf19bf2755 /arch/arm64 | |
| parent | 4bf8b96ed3f7e11422d8b4f58cf43896ed02d1f6 (diff) | |
| download | linux-9d372c9fab34cd8803141871195141995f85c7f7.tar.xz | |
arm64: Add page size to the kernel image header
This patch adds the page size to the arm64 kernel image header
so that one can infer the PAGESIZE used by the kernel. This will
be helpful to diagnose failures to boot the kernel with page size
not supported by the CPU.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/image.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h index 6eb8fee..bc2abb8 100644 --- a/arch/arm64/kernel/image.h +++ b/arch/arm64/kernel/image.h @@ -47,7 +47,10 @@ #define __HEAD_FLAG_BE 0 #endif -#define __HEAD_FLAGS (__HEAD_FLAG_BE << 0) +#define __HEAD_FLAG_PAGE_SIZE ((PAGE_SHIFT - 10) / 2) + +#define __HEAD_FLAGS ((__HEAD_FLAG_BE << 0) | \ + (__HEAD_FLAG_PAGE_SIZE << 1)) /* * These will output as part of the Image header, which should be little-endian |