Re: [PATCH 2/3] riscv: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

From: Palmer Dabbelt
Date: Thu Aug 20 2020 - 16:45:04 EST


On Fri, 03 Jul 2020 01:57:54 PDT (-0700), zong.li@xxxxxxxxxx wrote:
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 RISC-V at all even though ARCH_DLINFO will contain one NEW_AUX_ENT
for the VDSO address.

Signed-off-by: Zong Li <zong.li@xxxxxxxxxx>
---
arch/riscv/include/uapi/asm/auxvec.h | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/riscv/include/uapi/asm/auxvec.h b/arch/riscv/include/uapi/asm/auxvec.h
index d86cb17bbabe..22e0ae888406 100644
--- a/arch/riscv/include/uapi/asm/auxvec.h
+++ b/arch/riscv/include/uapi/asm/auxvec.h
@@ -10,4 +10,7 @@
/* vDSO location */
#define AT_SYSINFO_EHDR 33

+/* entries in ARCH_DLINFO */
+#define AT_VECTOR_SIZE_ARCH 1
+
#endif /* _UAPI_ASM_RISCV_AUXVEC_H */

Reviewed-by: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx>