add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/x86/kernel/cpu/mtrr/mtrr.c
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@@ -52,7 +52,7 @@
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 #include <asm/e820/api.h>
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 #include <asm/mtrr.h>
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 #include <asm/msr.h>
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-#include <asm/pat.h>
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+#include <asm/memtype.h>
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 #include "mtrr.h"
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@@ -127,7 +127,7 @@
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 	if (use_intel())
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 		rdmsr(MSR_MTRRcap, config, dummy);
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-	else if (is_cpu(AMD))
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+	else if (is_cpu(AMD) || is_cpu(HYGON))
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 		config = 2;
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 	else if (is_cpu(CYRIX) || is_cpu(CENTAUR))
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 		config = 8;
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@@ -793,8 +793,6 @@
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 	if (!use_intel() || mtrr_aps_delayed_init)
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 		return;
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-
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-	rcu_cpu_starting(smp_processor_id());
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 	/*
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 	 * Ideally we should hold mtrr_mutex here to avoid mtrr entries