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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/arch/mips/include/asm/stackframe.h
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@@ -424,12 +424,13 @@
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 		.macro	RESTORE_SP_AND_RET docfi=0
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 		RESTORE_SP \docfi
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-#ifdef CONFIG_CPU_MIPSR6
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+#if defined(CONFIG_CPU_MIPSR5) || defined(CONFIG_CPU_MIPSR6)
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 		eretnc
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 #else
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+		.set	push
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 		.set	arch=r4000
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 		eret
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-		.set	mips0
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+		.set	pop
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 #endif
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 		.endm
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@@ -449,7 +450,7 @@
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  */
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 		.macro	CLI
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 		mfc0	t0, CP0_STATUS
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-		li	t1, ST0_CU0 | STATMASK
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+		li	t1, ST0_KERNEL_CUMASK | STATMASK
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 		or	t0, t1
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 		xori	t0, STATMASK
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 		mtc0	t0, CP0_STATUS
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@@ -462,7 +463,7 @@
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  */
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 		.macro	STI
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 		mfc0	t0, CP0_STATUS
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-		li	t1, ST0_CU0 | STATMASK
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+		li	t1, ST0_KERNEL_CUMASK | STATMASK
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 		or	t0, t1
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 		xori	t0, STATMASK & ~1
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 		mtc0	t0, CP0_STATUS
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@@ -476,7 +477,7 @@
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  */
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 		.macro	KMODE
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 		mfc0	t0, CP0_STATUS
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-		li	t1, ST0_CU0 | (STATMASK & ~1)
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+		li	t1, ST0_KERNEL_CUMASK | (STATMASK & ~1)
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 #if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
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 		andi	t2, t0, ST0_IEP
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 		srl	t2, 2