[PATCH AUTOSEL 4.19 28/60] riscv: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

[PATCH AUTOSEL 4.19 28/60] riscv: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

[Sasha Levin]

From: Zong Li <zong.li@sifive.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@sifive.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.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 1376515547cda..ed7bf7c7add5f 100644
--- a/arch/riscv/include/uapi/asm/auxvec.h
+++ b/arch/riscv/include/uapi/asm/auxvec.h
@@ -21,4 +21,7 @@
 /* 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


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Re: [PATCH AUTOSEL 4.19 28/60] riscv: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

[Palmer Dabbelt]

On Mon, 26 Oct 2020 17:03:43 PDT (-0700), sashal@kernel.org wrote:
> From: Zong Li <zong.li@sifive.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@sifive.com>
> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
> Reviewed-by: Pekka Enberg <penberg@kernel.org>
> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
> Signed-off-by: Sasha Levin <sashal@kernel.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 1376515547cda..ed7bf7c7add5f 100644
> --- a/arch/riscv/include/uapi/asm/auxvec.h
> +++ b/arch/riscv/include/uapi/asm/auxvec.h
> @@ -21,4 +21,7 @@
>  /* vDSO location */
>  #define AT_SYSINFO_EHDR 33
>
> +/* entries in ARCH_DLINFO */
> +#define AT_VECTOR_SIZE_ARCH	1
> +
>  #endif /* _UAPI_ASM_RISCV_AUXVEC_H */

Thanks.  This should have been

Fixes: 2129a235c098 ("RISC-V: ELF and module implementation")

which is essentially all the way back to the beginning.

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