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-rw-r--r--arch/s390/Kconfig15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 249c2771be0e..ebc0bf7c84d0 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -507,6 +507,21 @@ source kernel/Kconfig.preempt
source kernel/Kconfig.hz
+config ARCH_RANDOM
+ def_bool y
+ prompt "s390 architectural random number generation API"
+ help
+ Enable the s390 architectural random number generation API
+ to provide random data for all consumers within the Linux
+ kernel.
+
+ When enabled the arch_random_* functions declared in linux/random.h
+ are implemented. The implementation is based on the s390 CPACF
+ instruction subfunction TRNG which provides a real true random
+ number generator.
+
+ If unsure, say Y.
+
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