add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/mips/lib/dump_tlb.c
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@@ -10,8 +10,8 @@
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 #include <asm/hazards.h>
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 #include <asm/mipsregs.h>
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+#include <asm/mmu_context.h>
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 #include <asm/page.h>
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-#include <asm/pgtable.h>
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 #include <asm/tlbdebug.h>
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 void dump_tlb_regs(void)
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@@ -73,12 +73,13 @@
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 static void dump_tlb(int first, int last)
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 {
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-	unsigned long s_entryhi, entryhi, asid;
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+	unsigned long s_entryhi, entryhi, asid, mmid;
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 	unsigned long long entrylo0, entrylo1, pa;
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 	unsigned int s_index, s_pagemask, s_guestctl1 = 0;
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 	unsigned int pagemask, guestctl1 = 0, c0, c1, i;
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 	unsigned long asidmask = cpu_asid_mask(&current_cpu_data);
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 	int asidwidth = DIV_ROUND_UP(ilog2(asidmask) + 1, 4);
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+	unsigned long s_mmid;
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 #ifdef CONFIG_32BIT
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 	bool xpa = cpu_has_xpa && (read_c0_pagegrain() & PG_ELPA);
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 	int pwidth = xpa ? 11 : 8;
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@@ -92,7 +93,12 @@
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 	s_pagemask = read_c0_pagemask();
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 	s_entryhi = read_c0_entryhi();
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 	s_index = read_c0_index();
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-	asid = s_entryhi & asidmask;
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+
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+	if (cpu_has_mmid)
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+		asid = s_mmid = read_c0_memorymapid();
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+	else
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+		asid = s_entryhi & asidmask;
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+
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 	if (cpu_has_guestid)
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 		s_guestctl1 = read_c0_guestctl1();
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@@ -105,6 +111,12 @@
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 		entryhi	 = read_c0_entryhi();
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 		entrylo0 = read_c0_entrylo0();
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 		entrylo1 = read_c0_entrylo1();
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+
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+		if (cpu_has_mmid)
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+			mmid = read_c0_memorymapid();
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+		else
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+			mmid = entryhi & asidmask;
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+
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 		if (cpu_has_guestid)
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 			guestctl1 = read_c0_guestctl1();
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@@ -124,8 +136,7 @@
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 		 * leave only a single G bit set after a machine check exception
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 		 * due to duplicate TLB entry.
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 		 */
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-		if (!((entrylo0 | entrylo1) & ENTRYLO_G) &&
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-		    (entryhi & asidmask) != asid)
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+		if (!((entrylo0 | entrylo1) & ENTRYLO_G) && (mmid != asid))
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 			continue;
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 		/*
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@@ -138,7 +149,7 @@
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 		pr_cont("va=%0*lx asid=%0*lx",
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 			vwidth, (entryhi & ~0x1fffUL),
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-			asidwidth, entryhi & asidmask);
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+			asidwidth, mmid);
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 		if (cpu_has_guestid)
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 			pr_cont(" gid=%02lx",
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 				(guestctl1 & MIPS_GCTL1_RID)