buildroot/board/qemu/riscv32-virt/patches/linux/0001-Revert-riscv-Use-latest-system-call-ABI.patch

From 15f62343916fcb3cae82e618da28eaa82bc8c007 Mon Sep 17 00:00:00 2001
From: Alistair Francis <alistair.francis@wdc.com>
Date: Tue, 16 Apr 2019 09:03:41 -0700
Subject: [PATCH] Revert "riscv: Use latest system call ABI"

This reverts commit d4c08b9776b392e20efc6198ebe1bc8ec1911d9b.

The latest RISC-V 32bit glibc submission doesn't work with this patch,
so let's revert it. This revert can be reverted when the glibc
submission is updated to work on the 5.1 kernel.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 arch/riscv/Kconfig                   | 1 +
 arch/riscv/include/uapi/asm/unistd.h | 5 ++++-
 arch/riscv/kernel/vdso/Makefile      | 2 --
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index eb56c82d8aa1..43dd2680c696 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -11,6 +11,7 @@ config 32BIT
 
 config RISCV
 	def_bool y
+	select ARCH_32BIT_OFF_T if !64BIT
 	# even on 32-bit, physical (and DMA) addresses are > 32-bits
 	select PHYS_ADDR_T_64BIT
 	select OF
diff --git a/arch/riscv/include/uapi/asm/unistd.h b/arch/riscv/include/uapi/asm/unistd.h
index 0e2eeeb1fd27..486a288b454c 100644
--- a/arch/riscv/include/uapi/asm/unistd.h
+++ b/arch/riscv/include/uapi/asm/unistd.h
@@ -17,8 +17,11 @@
 
 #ifdef __LP64__
 #define __ARCH_WANT_NEW_STAT
-#define __ARCH_WANT_SET_GET_RLIMIT
 #endif /* __LP64__ */
+#define __ARCH_WANT_SET_GET_RLIMIT
+#ifndef __LP64__
+#define __ARCH_WANT_TIME32_SYSCALLS
+#endif
 
 #include <asm-generic/unistd.h>
 
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
index fec62b24df89..eed1c137f618 100644
--- a/arch/riscv/kernel/vdso/Makefile
+++ b/arch/riscv/kernel/vdso/Makefile
@@ -2,11 +2,9 @@
 
 # Symbols present in the vdso
 vdso-syms  = rt_sigreturn
-ifdef CONFIG_64BIT
 vdso-syms += gettimeofday
 vdso-syms += clock_gettime
 vdso-syms += clock_getres
-endif
 vdso-syms += getcpu
 vdso-syms += flush_icache
 
-- 
2.21.0