linux-kernel - [PATCH AUTOSEL 5.4 36/80] riscv: Define AT_VECTOR_SIZE_ARCH for ARCH

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Message-Id: <20201026235516.1025100-36-sashal@kernel.org>
Date:   Mon, 26 Oct 2020 19:54:32 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Zong Li <zong.li@...ive.com>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>,
        Pekka Enberg <penberg@...nel.org>,
        Sasha Levin <sashal@...nel.org>,
        linux-riscv@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.4 36/80] riscv: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

From: Zong Li <zong.li@...ive.com>

[ Upstream commit b5fca7c55f9fbab5ad732c3bce00f31af6ba5cfa ]

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@...ive.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
Reviewed-by: Pekka Enberg <penberg@...nel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 d86cb17bbabe6..22e0ae8884061 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 */
-- 
2.25.1