linux-kernel - [PATCH] arm64: defconfig: enable deprecated ARMv8 instructions emulation

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Date:   Thu,  8 Aug 2019 10:00:04 +0200
From:   Stefan Agner <stefan@...er.ch>
To:     catalin.marinas@....com, will@...nel.org
Cc:     olof@...om.net, shawnguo@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Stefan Agner <stefan@...er.ch>,
        Stefan Agner <stefan.agner@...adex.com>
Subject: [PATCH] arm64: defconfig: enable deprecated ARMv8 instructions emulation

Enable deprecated/obsolete ARMv8 instructions emulation. This allows
to run ARMv6 binaries (e.g. Raspberry Pi) on ARMv8 machines.

Signed-off-by: Stefan Agner <stefan.agner@...adex.com>
---
 arch/arm64/configs/defconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 0e58ef02880c..fd5af5582dda 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -68,6 +68,10 @@ CONFIG_KEXEC=y
 CONFIG_CRASH_DUMP=y
 CONFIG_XEN=y
 CONFIG_COMPAT=y
+CONFIG_ARMV8_DEPRECATED=y
+CONFIG_SWP_EMULATION=y
+CONFIG_CP15_BARRIER_EMULATION=y
+CONFIG_SETEND_EMULATION=y
 CONFIG_RANDOMIZE_BASE=y
 CONFIG_HIBERNATION=y
 CONFIG_WQ_POWER_EFFICIENT_DEFAULT=y
-- 
2.22.0