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| author | James Hogan <james.hogan@imgtec.com> | 2016-07-25 16:59:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-10 10:25:46 +0200 |
| commit | 4aa560bc839f3b525cfdf9744c13230065126a91 (patch) | |
| tree | fe4ae373ca213f3e41904e8e6aead46165a9119d /arch/mips | |
| parent | 0fb34ac0f0c102e425eae97b13b22b944d3de085 (diff) | |
| download | linux-stable-4aa560bc839f3b525cfdf9744c13230065126a91.tar.gz linux-stable-4aa560bc839f3b525cfdf9744c13230065126a91.tar.bz2 linux-stable-4aa560bc839f3b525cfdf9744c13230065126a91.zip | |
MIPS: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
commit 233b2ca181f20674ecad11be90b00814911ce345 upstream.
AT_VECTOR_SIZE_ARCH should be defined with the maximum number of
NEW_AUX_ENT entries that ARCH_DLINFO can contain, but it wasn't defined
for MIPS at all even though ARCH_DLINFO will contain one NEW_AUX_ENT for
the VDSO address.
This shouldn't be a problem as AT_VECTOR_SIZE_BASE includes space for
AT_BASE_PLATFORM which MIPS doesn't use, but lets define it now and add
the comment above ARCH_DLINFO as found in several other architectures to
remind future modifiers of ARCH_DLINFO to keep AT_VECTOR_SIZE_ARCH up to
date.
Fixes: ebb5e78cc634 ("MIPS: Initial implementation of a VDSO")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-arch@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13823/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/elf.h | 1 | ||||
| -rw-r--r-- | arch/mips/include/uapi/asm/auxvec.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/include/asm/elf.h b/arch/mips/include/asm/elf.h index b01a6ff468e0..ce985cefe11c 100644 --- a/arch/mips/include/asm/elf.h +++ b/arch/mips/include/asm/elf.h @@ -420,6 +420,7 @@ extern const char *__elf_platform; #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2) #endif +/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ #define ARCH_DLINFO \ do { \ NEW_AUX_ENT(AT_SYSINFO_EHDR, \ diff --git a/arch/mips/include/uapi/asm/auxvec.h b/arch/mips/include/uapi/asm/auxvec.h index c9c7195272c4..45ba259a3618 100644 --- a/arch/mips/include/uapi/asm/auxvec.h +++ b/arch/mips/include/uapi/asm/auxvec.h @@ -14,4 +14,6 @@ /* Location of VDSO image. */ #define AT_SYSINFO_EHDR 33 +#define AT_VECTOR_SIZE_ARCH 1 /* entries in ARCH_DLINFO */ + #endif /* __ASM_AUXVEC_H */ |