Merge commit '6ba1bc826d160fe4f32bcb188687dcca4bdfaf3d' into arch-arm64

Backmerge from mainline commit that introduced a trivial conflict in
arch/arm64/kernel/process.c - a bunch of functions removed next to the
place where kernel_thread() used to be.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

9 files changed, 69 insertions, 25 deletions

diff --git a/arch/mips/include/asm/Kbuild b/arch/mips/include/asm/Kbuild
index e69de29..533053d 100644
--- a/arch/mips/include/asm/Kbuild
+++ b/arch/mips/include/asm/Kbuild
@@ -0,0 +1 @@
+# MIPS headers
diff --git a/arch/mips/include/asm/delay.h b/arch/mips/include/asm/delay.h
index e7cd782..dc0a5f7 100644
--- a/arch/mips/include/asm/delay.h
+++ b/arch/mips/include/asm/delay.h
@@ -13,9 +13,9 @@
 
 #include <linux/param.h>
 
-extern void __delay(unsigned int loops);
-extern void __ndelay(unsigned int ns);
-extern void __udelay(unsigned int us);
+extern void __delay(unsigned long loops);
+extern void __ndelay(unsigned long ns);
+extern void __udelay(unsigned long us);
 
 #define ndelay(ns) __ndelay(ns)
 #define udelay(us) __udelay(us)
diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h
index c26e182..f5b521d 100644
--- a/arch/mips/include/asm/pgtable-64.h
+++ b/arch/mips/include/asm/pgtable-64.h
@@ -9,6 +9,7 @@
 #ifndef _ASM_PGTABLE_64_H
 #define _ASM_PGTABLE_64_H
 
+#include <linux/compiler.h>
 #include <linux/linkage.h>
 
 #include <asm/addrspace.h>
@@ -172,7 +173,19 @@ static inline int pmd_none(pmd_t pmd)
 	return pmd_val(pmd) == (unsigned long) invalid_pte_table;
 }
 
-#define pmd_bad(pmd)		(pmd_val(pmd) & ~PAGE_MASK)
+static inline int pmd_bad(pmd_t pmd)
+{
+#ifdef CONFIG_HUGETLB_PAGE
+	/* pmd_huge(pmd) but inline */
+	if (unlikely(pmd_val(pmd) & _PAGE_HUGE))
+		return 0;
+#endif
+
+	if (unlikely(pmd_val(pmd) & ~PAGE_MASK))
+		return 1;
+
+	return 0;
+}
 
 static inline int pmd_present(pmd_t pmd)
 {
diff --git a/arch/mips/jz4740/serial.h b/arch/mips/jz4740/serial.h
index b9fe3ad..8eb715b 100644
--- a/arch/mips/jz4740/serial.h
+++ b/arch/mips/jz4740/serial.h
@@ -14,6 +14,9 @@
  */
 
 #ifndef __MIPS_JZ4740_SERIAL_H__
+#define __MIPS_JZ4740_SERIAL_H__
+
+struct uart_port;
 
 void jz4740_serial_out(struct uart_port *p, int offset, int value);
 
diff --git a/arch/mips/kernel/smp-cmp.c b/arch/mips/kernel/smp-cmp.c
index afc379c..06cd0c6 100644
--- a/arch/mips/kernel/smp-cmp.c
+++ b/arch/mips/kernel/smp-cmp.c
@@ -97,7 +97,7 @@ static void cmp_init_secondary(void)
 
 	/* Enable per-cpu interrupts: platform specific */
 
-	c->core = (read_c0_ebase() >> 1) & 0xff;
+	c->core = (read_c0_ebase() >> 1) & 0x1ff;
 #if defined(CONFIG_MIPS_MT_SMP) || defined(CONFIG_MIPS_MT_SMTC)
 	c->vpe_id = (read_c0_tcbind() >> TCBIND_CURVPE_SHIFT) & TCBIND_CURVPE;
 #endif
diff --git a/arch/mips/lib/delay.c b/arch/mips/lib/delay.c
index 5995969..dc81ca8 100644
--- a/arch/mips/lib/delay.c
+++ b/arch/mips/lib/delay.c
@@ -15,13 +15,17 @@
 #include <asm/compiler.h>
 #include <asm/war.h>
 
-inline void __delay(unsigned int loops)
+void __delay(unsigned long loops)
 {
 	__asm__ __volatile__ (
 	"	.set	noreorder				\n"
 	"	.align	3					\n"
 	"1:	bnez	%0, 1b					\n"
+#if __SIZEOF_LONG__ == 4
 	"	subu	%0, 1					\n"
+#else
+	"	dsubu	%0, 1					\n"
+#endif
 	"	.set	reorder					\n"
 	: "=r" (loops)
 	: "0" (loops));
diff --git a/arch/mips/lib/dump_tlb.c b/arch/mips/lib/dump_tlb.c
index 3f69725..a99c1d3 100644
--- a/arch/mips/lib/dump_tlb.c
+++ b/arch/mips/lib/dump_tlb.c
@@ -50,8 +50,9 @@ static void dump_tlb(int first, int last)
 {
 	unsigned long s_entryhi, entryhi, asid;
 	unsigned long long entrylo0, entrylo1;
-	unsigned int s_index, pagemask, c0, c1, i;
+	unsigned int s_index, s_pagemask, pagemask, c0, c1, i;
 
+	s_pagemask = read_c0_pagemask();
 	s_entryhi = read_c0_entryhi();
 	s_index = read_c0_index();
 	asid = s_entryhi & 0xff;
@@ -103,6 +104,7 @@ static void dump_tlb(int first, int last)
 
 	write_c0_entryhi(s_entryhi);
 	write_c0_index(s_index);
+	write_c0_pagemask(s_pagemask);
 }
 
 void dump_tlb_all(void)
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index 87b9cfc..4b9b935 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -320,6 +320,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
 			tlb_write_random();
 		else
 			tlb_write_indexed();
+		tlbw_use_hazard();
 		write_c0_pagemask(PM_DEFAULT_MASK);
 	} else
 #endif
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 658a520..2833dcb 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -148,8 +148,8 @@ enum label_id {
 	label_leave,
 	label_vmalloc,
 	label_vmalloc_done,
-	label_tlbw_hazard,
-	label_split,
+	label_tlbw_hazard_0,
+	label_split = label_tlbw_hazard_0 + 8,
 	label_tlbl_goaround1,
 	label_tlbl_goaround2,
 	label_nopage_tlbl,
@@ -167,7 +167,7 @@ UASM_L_LA(_second_part)
 UASM_L_LA(_leave)
 UASM_L_LA(_vmalloc)
 UASM_L_LA(_vmalloc_done)
-UASM_L_LA(_tlbw_hazard)
+/* _tlbw_hazard_x is handled differently.  */
 UASM_L_LA(_split)
 UASM_L_LA(_tlbl_goaround1)
 UASM_L_LA(_tlbl_goaround2)
@@ -181,6 +181,30 @@ UASM_L_LA(_large_segbits_fault)
 UASM_L_LA(_tlb_huge_update)
 #endif
 
+static int __cpuinitdata hazard_instance;
+
+static void uasm_bgezl_hazard(u32 **p, struct uasm_reloc **r, int instance)
+{
+	switch (instance) {
+	case 0 ... 7:
+		uasm_il_bgezl(p, r, 0, label_tlbw_hazard_0 + instance);
+		return;
+	default:
+		BUG();
+	}
+}
+
+static void uasm_bgezl_label(struct uasm_label **l, u32 **p, int instance)
+{
+	switch (instance) {
+	case 0 ... 7:
+		uasm_build_label(l, *p, label_tlbw_hazard_0 + instance);
+		break;
+	default:
+		BUG();
+	}
+}
+
 /*
  * For debug purposes.
  */
@@ -478,21 +502,28 @@ static void __cpuinit build_tlb_write_entry(u32 **p, struct uasm_label **l,
 		 * This branch uses up a mtc0 hazard nop slot and saves
 		 * two nops after the tlbw instruction.
 		 */
-		uasm_il_bgezl(p, r, 0, label_tlbw_hazard);
+		uasm_bgezl_hazard(p, r, hazard_instance);
 		tlbw(p);
-		uasm_l_tlbw_hazard(l, *p);
+		uasm_bgezl_label(l, p, hazard_instance);
+		hazard_instance++;
 		uasm_i_nop(p);
 		break;
 
 	case CPU_R4600:
 	case CPU_R4700:
-	case CPU_R5000:
-	case CPU_R5000A:
 		uasm_i_nop(p);
 		tlbw(p);
 		uasm_i_nop(p);
 		break;
 
+	case CPU_R5000:
+	case CPU_R5000A:
+	case CPU_NEVADA:
+		uasm_i_nop(p); /* QED specifies 2 nops hazard */
+		uasm_i_nop(p); /* QED specifies 2 nops hazard */
+		tlbw(p);
+		break;
+
 	case CPU_R4300:
 	case CPU_5KC:
 	case CPU_TX49XX:
@@ -526,17 +557,6 @@ static void __cpuinit build_tlb_write_entry(u32 **p, struct uasm_label **l,
 		tlbw(p);
 		break;
 
-	case CPU_NEVADA:
-		uasm_i_nop(p); /* QED specifies 2 nops hazard */
-		/*
-		 * This branch uses up a mtc0 hazard nop slot and saves
-		 * a nop after the tlbw instruction.
-		 */
-		uasm_il_bgezl(p, r, 0, label_tlbw_hazard);
-		tlbw(p);
-		uasm_l_tlbw_hazard(l, *p);
-		break;
-
 	case CPU_RM7000:
 		uasm_i_nop(p);
 		uasm_i_nop(p);