add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/misc/cxl/main.c
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@@ -1,10 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright 2014 IBM Corp.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version
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- * 2 of the License, or (at your option) any later version.
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  */
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 #include <linux/spinlock.h>
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@@ -22,6 +18,7 @@
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 #include <linux/sched/task.h>
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 #include <asm/cputable.h>
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+#include <asm/mmu.h>
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 #include <misc/cxl-base.h>
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 #include "cxl.h"
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@@ -319,6 +316,9 @@
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 {
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 	int rc = 0;
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+	if (!tlbie_capable)
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+		return -EINVAL;
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+
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 	if ((rc = cxl_file_init()))
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 		return rc;
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