From: Richard Henderson <richard.henderson@linaro.org>
Date: Mon, 10 Feb 2020 13:00:15 +0000
Subject: random: Make RANDOM_TRUST_CPU depend on ARCH_RANDOM
Git-commit: 23ae0c17b89cfeb511aa0770735a319d35597072
Patch-mainline: v5.7-rc1
References: jsc#SLE-16574 jsc#SLE-13718
Listing the set of host architectures does not scale.
Depend instead on the existence of the architecture rng.
This will allow RANDOM_TRUST_CPU to be selected on arm64. Today
ARCH_RANDOM is only selected by x86, s390, and powerpc, so this does not
adversely affect other architectures.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20200210130015.17664-5-mark.rutland@arm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
drivers/char/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 26956c006987..84207d5a9bb0 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -539,7 +539,7 @@ endmenu
config RANDOM_TRUST_CPU
bool "Trust the CPU manufacturer to initialize Linux's CRNG"
- depends on X86 || S390 || PPC
+ depends on ARCH_RANDOM
default n
help
Assume that CPU manufacturer (e.g., Intel or AMD for RDSEED or
--
2.29.2