Commit 233b2ca1 authored Jul 25, 2016 by James Hogan Committed by Ralf Baechle Jul 28, 2016

MIPS: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO



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: ebb5e78c ("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>

parent 7e78db99

arch/mips/include/asm/elf.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -458,6 +458,7 @@ 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, \

arch/mips/include/uapi/asm/auxvec.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -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 */