diff options
author | James Hogan <james.hogan@imgtec.com> | 2016-07-25 16:59:52 +0100 |
---|---|---|
committer | Ben Hutchings <ben@decadent.org.uk> | 2016-11-20 01:17:00 +0000 |
commit | ec2ae4c8ce64afbdc045d95f2ec88f9b2903f4d2 (patch) | |
tree | dbbf55539fe7efe7e32795c2bbe6dcf31fd0d6dd /arch/arm64/include | |
parent | 7b57c6f4aa56552d82e38602adaf7d4df64d9316 (diff) |
arm64: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
commit 3146bc64d12377a74dbda12b96ea32da3774ae07 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 arm64 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 arm64 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: f668cd1673aa ("arm64: ELF definitions")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'arch/arm64/include')
-rw-r--r-- | arch/arm64/include/asm/elf.h | 1 | ||||
-rw-r--r-- | arch/arm64/include/uapi/asm/auxvec.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index 2009daf52bf1..922ff638669e 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -137,6 +137,7 @@ extern unsigned long randomize_et_dyn(unsigned long base); #define SET_PERSONALITY(ex) clear_thread_flag(TIF_32BIT); +/* 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/arm64/include/uapi/asm/auxvec.h b/arch/arm64/include/uapi/asm/auxvec.h index 22d6d8885854..4cf0c17787a8 100644 --- a/arch/arm64/include/uapi/asm/auxvec.h +++ b/arch/arm64/include/uapi/asm/auxvec.h @@ -19,4 +19,6 @@ /* vDSO location */ #define AT_SYSINFO_EHDR 33 +#define AT_VECTOR_SIZE_ARCH 1 /* entries in ARCH_DLINFO */ + #endif |