1 files changed, 2 insertions, 1 deletions
diff --git a/cpu.cpp b/cpu.cpp
index e0495fec..8e18c71a 100644
--- a/cpu.cpp
+++ b/cpu.cpp
@@ -1355,7 +1355,8 @@ inline bool CPU_QuerySHA512()
 // Power9 random number generator
 inline bool CPU_QueryDARN()
 {
-	// Power9 and ISA 3.0 provide DARN.
+	// Power9 and ISA 3.0 provide DARN. It looks like
+	// Glibc offers PPC_FEATURE2_DARN.
 #if defined(__linux__) && defined(PPC_FEATURE2_ARCH_3_00)
 	if ((getauxval(AT_HWCAP2) & PPC_FEATURE2_ARCH_3_00) != 0)
 		return true;