linux-kernel - [PATCH] arm64: Kconfig: add a choice for endianess

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 12 Nov 2019 17:01:44 +0100
From:   Anders Roxell <anders.roxell@...aro.org>
To:     catalin.marinas@....com
Cc:     will@...nel.org, john.garry@...wei.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Anders Roxell <anders.roxell@...aro.org>
Subject: [PATCH] arm64: Kconfig: add a choice for endianess

When building allmodconfig KCONFIG_ALLCONFIG=$(pwd)/arch/arm64/configs/defconfig
CONFIG_CPU_BIG_ENDIAN gets enabled. Which tends not to be what most
people wants. Another concern that thas come up is that ACPI in't built
for an allmodconfig kernel today since that also depends on !CPU_BIG_ENDIAN.

Rework so that we introduce a 'choice' and default the choice to
CPU_LITTLE_ENDIAN. That means that when we build an allmodconfig kernel
it will default to CPU_LITTLE_ENDIAN that most people tends to want.

Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
---
 arch/arm64/Kconfig | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 64764ca92fca..62f83c234a61 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -877,11 +877,24 @@ config ARM64_PA_BITS
 	default 48 if ARM64_PA_BITS_48
 	default 52 if ARM64_PA_BITS_52
 
+choice
+	prompt "Endianess"
+	default CPU_LITTLE_ENDIAN
+	help
+	  Choose what mode you plan on running your kernel in.
+
 config CPU_BIG_ENDIAN
        bool "Build big-endian kernel"
        help
          Say Y if you plan on running a kernel in big-endian mode.
 
+config CPU_LITTLE_ENDIAN
+	bool "Build little-endian kernel"
+	help
+	  Say Y if you plan on running a kernel in little-endian mode.
+
+endchoice
+
 config SCHED_MC
 	bool "Multi-core scheduler support"
 	help
-- 
2.20.1