These are 486 based CPUs.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/Kconfig.cpu      | 14 --------------
 arch/x86/kernel/cpu/umc.c | 26 --------------------------
 2 files changed, 40 deletions(-)

diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index f656033b3a8a..df586ff2178f 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -376,20 +376,6 @@ config CPU_SUP_TRANSMETA_32
 
 	  If unsure, say N.
 
-config CPU_SUP_UMC_32
-	default y
-	bool "Support UMC processors" if PROCESSOR_SELECT
-	depends on M486SX || M486 || (EXPERT && !64BIT)
-	help
-	  This enables detection, tunings and quirks for UMC processors
-
-	  You need this enabled if you want your kernel to run on a
-	  UMC CPU. Disabling this option on other types of CPUs
-	  makes the kernel a tiny bit smaller. Disabling it on a UMC
-	  CPU might render the kernel unbootable.
-
-	  If unsure, say N.
-
 config CPU_SUP_ZHAOXIN
 	default y
 	bool "Support Zhaoxin processors" if PROCESSOR_SELECT
diff --git a/arch/x86/kernel/cpu/umc.c b/arch/x86/kernel/cpu/umc.c
deleted file mode 100644
index 65a58a390fc3..000000000000
--- a/arch/x86/kernel/cpu/umc.c
+++ /dev/null
@@ -1,26 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/kernel.h>
-#include <asm/processor.h>
-#include "cpu.h"
-
-/*
- * UMC chips appear to be only either 386 or 486,
- * so no special init takes place.
- */
-
-static const struct cpu_dev umc_cpu_dev = {
-	.c_vendor	= "UMC",
-	.c_ident	= { "UMC UMC UMC" },
-	.legacy_models	= {
-		{ .family = 4, .model_names =
-		  {
-			  [1] = "U5D",
-			  [2] = "U5S",
-		  }
-		},
-	},
-	.c_x86_vendor	= X86_VENDOR_UMC,
-};
-
-cpu_dev_register(umc_cpu_dev);
-
-- 
2.45.2