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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/arch/mips/lib/memset.S
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@@ -78,7 +78,6 @@
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 #endif
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 	.endm
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-	.set	noreorder
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 	.align	5
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 	/*
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@@ -94,13 +93,16 @@
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 	.endif
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 	sltiu		t0, a2, STORSIZE	/* very small region? */
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+	.set		noreorder
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 	bnez		t0, .Lsmall_memset\@
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 	 andi		t0, a0, STORMASK	/* aligned? */
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+	.set		reorder
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 #ifdef CONFIG_CPU_MICROMIPS
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 	move		t8, a1			/* used by 'swp' instruction */
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 	move		t9, a1
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 #endif
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+	.set		noreorder
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 #ifndef CONFIG_CPU_DADDI_WORKAROUNDS
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 	beqz		t0, 1f
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 	 PTR_SUBU	t0, STORSIZE		/* alignment in bytes */
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@@ -111,8 +113,9 @@
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 	 PTR_SUBU	t0, AT			/* alignment in bytes */
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 	.set		at
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 #endif
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+	.set		reorder
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-#ifndef CONFIG_CPU_MIPSR6
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+#ifndef CONFIG_CPU_NO_LOAD_STORE_LR
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 	R10KCBARRIER(0(ra))
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 #ifdef __MIPSEB__
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 	EX(LONG_S_L, a1, (a0), .Lfirst_fixup\@)	/* make word/dword aligned */
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@@ -122,11 +125,13 @@
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 	PTR_SUBU	a0, t0			/* long align ptr */
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 	PTR_ADDU	a2, t0			/* correct size */
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-#else /* CONFIG_CPU_MIPSR6 */
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+#else /* CONFIG_CPU_NO_LOAD_STORE_LR */
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 #define STORE_BYTE(N)				\
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 	EX(sb, a1, N(a0), .Lbyte_fixup\@);	\
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+	.set		noreorder;		\
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 	beqz		t0, 0f;			\
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-	PTR_ADDU	t0, 1;
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+	 PTR_ADDU	t0, 1;			\
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+	.set		reorder;
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 	PTR_ADDU	a2, t0			/* correct size */
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 	PTR_ADDU	t0, 1
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@@ -145,19 +150,17 @@
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 	ori		a0, STORMASK
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 	xori		a0, STORMASK
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 	PTR_ADDIU	a0, STORSIZE
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-#endif /* CONFIG_CPU_MIPSR6 */
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+#endif /* CONFIG_CPU_NO_LOAD_STORE_LR */
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 1:	ori		t1, a2, 0x3f		/* # of full blocks */
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 	xori		t1, 0x3f
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+	andi		t0, a2, 0x40-STORSIZE
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 	beqz		t1, .Lmemset_partial\@	/* no block to fill */
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-	 andi		t0, a2, 0x40-STORSIZE
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 	PTR_ADDU	t1, a0			/* end address */
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-	.set		reorder
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 1:	PTR_ADDIU	a0, 64
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 	R10KCBARRIER(0(ra))
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 	f_fill64 a0, -64, FILL64RG, .Lfwd_fixup\@, \mode
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 	bne		t1, a0, 1b
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-	.set		noreorder
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 .Lmemset_partial\@:
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 	R10KCBARRIER(0(ra))
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@@ -173,28 +176,27 @@
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 	PTR_SUBU	t1, AT
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 	.set		at
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 #endif
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+	PTR_ADDU	a0, t0			/* dest ptr */
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 	jr		t1
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-	 PTR_ADDU	a0, t0			/* dest ptr */
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-	.set		push
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-	.set		noreorder
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-	.set		nomacro
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 	/* ... but first do longs ... */
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 	f_fill64 a0, -64, FILL64RG, .Lpartial_fixup\@, \mode
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-2:	.set		pop
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-	andi		a2, STORMASK		/* At most one long to go */
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+2:	andi		a2, STORMASK		/* At most one long to go */
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+	.set		noreorder
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 	beqz		a2, 1f
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-#ifndef CONFIG_CPU_MIPSR6
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+#ifndef CONFIG_CPU_NO_LOAD_STORE_LR
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 	 PTR_ADDU	a0, a2			/* What's left */
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+	.set		reorder
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 	R10KCBARRIER(0(ra))
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 #ifdef __MIPSEB__
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 	EX(LONG_S_R, a1, -1(a0), .Llast_fixup\@)
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 #else
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 	EX(LONG_S_L, a1, -1(a0), .Llast_fixup\@)
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 #endif
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-#else
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+#else /* CONFIG_CPU_NO_LOAD_STORE_LR */
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 	 PTR_SUBU	t0, $0, a2
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+	.set		reorder
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 	move		a2, zero		/* No remaining longs */
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 	PTR_ADDIU	t0, 1
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 	STORE_BYTE(0)
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@@ -209,42 +211,43 @@
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 	EX(sb, a1, 6(a0), .Lbyte_fixup\@)
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 #endif
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 0:
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-#endif
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-1:	jr		ra
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-	 move		a2, zero
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+#endif /* CONFIG_CPU_NO_LOAD_STORE_LR */
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+1:	move		a2, zero
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+	jr		ra
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 .Lsmall_memset\@:
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+	PTR_ADDU	t1, a0, a2
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 	beqz		a2, 2f
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-	 PTR_ADDU	t1, a0, a2
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 1:	PTR_ADDIU	a0, 1			/* fill bytewise */
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 	R10KCBARRIER(0(ra))
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+	.set		noreorder
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 	bne		t1, a0, 1b
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 	 EX(sb, a1, -1(a0), .Lsmall_fixup\@)
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+	.set		reorder
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-2:	jr		ra			/* done */
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-	 move		a2, zero
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+2:	move		a2, zero
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+	jr		ra			/* done */
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 	.if __memset == 1
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 	END(memset)
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 	.set __memset, 0
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 	.hidden __memset
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 	.endif
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-#ifdef CONFIG_CPU_MIPSR6
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+#ifdef CONFIG_CPU_NO_LOAD_STORE_LR
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 .Lbyte_fixup\@:
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 	/*
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 	 * unset_bytes = (#bytes - (#unaligned bytes)) - (-#unaligned bytes remaining + 1) + 1
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 	 *      a2     =             a2                -              t0                   + 1
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 	 */
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 	PTR_SUBU	a2, t0
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+	PTR_ADDIU	a2, 1
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 	jr		ra
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-	 PTR_ADDIU	a2, 1
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-#endif /* CONFIG_CPU_MIPSR6 */
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+#endif /* CONFIG_CPU_NO_LOAD_STORE_LR */
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 .Lfirst_fixup\@:
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 	/* unset_bytes already in a2 */
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 	jr	ra
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-	 nop
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 .Lfwd_fixup\@:
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 	/*
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@@ -255,8 +258,8 @@
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 	andi		a2, 0x3f
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 	LONG_L		t0, THREAD_BUADDR(t0)
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 	LONG_ADDU	a2, t1
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+	LONG_SUBU	a2, t0
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 	jr		ra
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-	 LONG_SUBU	a2, t0
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 .Lpartial_fixup\@:
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 	/*
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@@ -267,24 +270,21 @@
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 	andi		a2, STORMASK
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 	LONG_L		t0, THREAD_BUADDR(t0)
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 	LONG_ADDU	a2, a0
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+	LONG_SUBU	a2, t0
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 	jr		ra
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-	 LONG_SUBU	a2, t0
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 .Llast_fixup\@:
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 	/* unset_bytes already in a2 */
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 	jr		ra
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-	 nop
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 .Lsmall_fixup\@:
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 	/*
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 	 * unset_bytes = end_addr - current_addr + 1
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 	 *      a2     =    t1    -      a0      + 1
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 	 */
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-	.set		reorder
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 	PTR_SUBU	a2, t1, a0
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 	PTR_ADDIU	a2, 1
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 	jr		ra
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-	.set		noreorder
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 	.endm
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..
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@@ -298,8 +298,8 @@
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 LEAF(memset)
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 EXPORT_SYMBOL(memset)
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+	move		v0, a0			/* result */
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 	beqz		a1, 1f
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-	 move		v0, a0			/* result */
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 	andi		a1, 0xff		/* spread fillword */
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 	LONG_SLL		t1, a1, 8