From c91813c0b4b65e977c8d57e99252d11a839324f5 Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Wed, 8 May 2019 19:46:23 -0400
Subject: [PATCH] Use fallback in detecting VIA cach line size

---
 cpu.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/cpu.cpp b/cpu.cpp
index a843d2d8..ae6c9455 100644
--- a/cpu.cpp
+++ b/cpu.cpp
@@ -458,6 +458,14 @@ void DetectX86Features()
 			CpuId(0xC0000005, 0, cpuid2);
 			g_cacheLineSize = GETBYTE(cpuid2[2] /*ECX*/, 0);
 		}
+#if defined(_SC_LEVEL1_DCACHE_LINESIZE)
+		else
+		{
+			int cacheLineSize = sysconf(_SC_LEVEL1_DCACHE_LINESIZE);
+			if (cacheLineSize > 0)
+				g_cacheLineSize = cacheLineSize;
+		}
+#endif
 	}
 
 	if (g_cacheLineSize == 0)