Merge Linux 2.6.23

19 files changed, 255 insertions, 57 deletions

diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index 07344cb3759..2fd96d95a39 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_IRQ_CPU)		+= irq_cpu.o
 obj-$(CONFIG_IRQ_CPU_RM7K)	+= irq-rm7000.o
 obj-$(CONFIG_IRQ_CPU_RM9K)	+= irq-rm9000.o
 obj-$(CONFIG_MIPS_BOARDS_GEN)	+= irq-msc01.o
+obj-$(CONFIG_IRQ_TXX9)		+= irq_txx9.o
 
 obj-$(CONFIG_32BIT)		+= scall32-o32.o
 obj-$(CONFIG_64BIT)		+= scall64-64.o
diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c
index 013327286c2..ca136298acd 100644
--- a/arch/mips/kernel/asm-offsets.c
+++ b/arch/mips/kernel/asm-offsets.c
@@ -232,6 +232,10 @@ void output_mm_defines(void)
 	constant("#define _PMD_T_LOG2    ", PMD_T_LOG2);
 	constant("#define _PTE_T_LOG2    ", PTE_T_LOG2);
 	linefeed;
+	constant("#define _PGD_ORDER     ", PGD_ORDER);
+	constant("#define _PMD_ORDER     ", PMD_ORDER);
+	constant("#define _PTE_ORDER     ", PTE_ORDER);
+	linefeed;
 	constant("#define _PMD_SHIFT     ", PMD_SHIFT);
 	constant("#define _PGDIR_SHIFT   ", PGDIR_SHIFT);
 	linefeed;
diff --git a/arch/mips/kernel/cpu-bugs64.c b/arch/mips/kernel/cpu-bugs64.c
index c09337b947b..6648fde20b9 100644
--- a/arch/mips/kernel/cpu-bugs64.c
+++ b/arch/mips/kernel/cpu-bugs64.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2003, 2004  Maciej W. Rozycki
+ * Copyright (C) 2003, 2004, 2007  Maciej W. Rozycki
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -29,7 +29,7 @@ static inline void align_mod(const int align, const int mod)
 		".endr\n\t"
 		".set	pop"
 		:
-		: "n" (align), "n" (mod));
+		: GCC_IMM_ASM (align), GCC_IMM_ASM (mod));
 }
 
 static inline void mult_sh_align_mod(long *v1, long *v2, long *w,
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 06448a9656d..3e004161ebd 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -199,7 +199,14 @@ static inline void check_wait(void)
 		if ((c->processor_id & 0xff) <= 0x64)
 			break;
 
-		cpu_wait = r4k_wait;
+		/*
+		 * Another rev is incremeting c0_count at a reduced clock
+		 * rate while in WAIT mode.  So we basically have the choice
+		 * between using the cp0 timer as clocksource or avoiding
+		 * the WAIT instruction.  Until more details are known,
+		 * disable the use of WAIT for 20Kc entirely.
+		   cpu_wait = r4k_wait;
+		 */
 		break;
 	case CPU_RM9000:
 		if ((c->processor_id & 0x00ff) >= 0x40)
diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c
index 2345160e63f..3a2d255361b 100644
--- a/arch/mips/kernel/i8259.c
+++ b/arch/mips/kernel/i8259.c
@@ -36,6 +36,7 @@ void mask_and_ack_8259A(unsigned int);
 static struct irq_chip i8259A_chip = {
 	.name		= "XT-PIC",
 	.mask		= disable_8259A_irq,
+	.disable	= disable_8259A_irq,
 	.unmask		= enable_8259A_irq,
 	.mask_ack	= mask_and_ack_8259A,
 };
@@ -176,10 +177,7 @@ handle_real_irq:
 		outb(cached_master_mask, PIC_MASTER_IMR);
 		outb(0x60+irq,PIC_MASTER_CMD);	/* 'Specific EOI to master */
 	}
-#ifdef CONFIG_MIPS_MT_SMTC
-	if (irq_hwmask[irq] & ST0_IM)
-		set_c0_status(irq_hwmask[irq] & ST0_IM);
-#endif /* CONFIG_MIPS_MT_SMTC */
+	smtc_im_ack_irq(irq);
 	spin_unlock_irqrestore(&i8259A_lock, flags);
 	return;
 
diff --git a/arch/mips/kernel/irixsig.c b/arch/mips/kernel/irixsig.c
index 6980deb6dce..28b2a8f0091 100644
--- a/arch/mips/kernel/irixsig.c
+++ b/arch/mips/kernel/irixsig.c
@@ -725,7 +725,7 @@ asmlinkage int irix_getcontext(struct pt_regs *regs)
 	       current->comm, current->pid, ctx);
 #endif
 
-	if (!access_ok(VERIFY_WRITE, ctx, sizeof(*ctx)));
+	if (!access_ok(VERIFY_WRITE, ctx, sizeof(*ctx)))
 		return -EFAULT;
 
 	error = __put_user(current->thread.irix_oldctx, &ctx->link);
diff --git a/arch/mips/kernel/irq-msc01.c b/arch/mips/kernel/irq-msc01.c
index 410868b5ea5..1ecdd50bfc6 100644
--- a/arch/mips/kernel/irq-msc01.c
+++ b/arch/mips/kernel/irq-msc01.c
@@ -52,11 +52,8 @@ static void level_mask_and_ack_msc_irq(unsigned int irq)
 	mask_msc_irq(irq);
 	if (!cpu_has_veic)
 		MSCIC_WRITE(MSC01_IC_EOI, 0);
-#ifdef CONFIG_MIPS_MT_SMTC
 	/* This actually needs to be a call into platform code */
-	if (irq_hwmask[irq] & ST0_IM)
-		set_c0_status(irq_hwmask[irq] & ST0_IM);
-#endif /* CONFIG_MIPS_MT_SMTC */
+	smtc_im_ack_irq(irq);
 }
 
 /*
@@ -73,10 +70,7 @@ static void edge_mask_and_ack_msc_irq(unsigned int irq)
 		MSCIC_WRITE(MSC01_IC_SUP+irq*8, r | ~MSC01_IC_SUP_EDGE_BIT);
 		MSCIC_WRITE(MSC01_IC_SUP+irq*8, r);
 	}
-#ifdef CONFIG_MIPS_MT_SMTC
-	if (irq_hwmask[irq] & ST0_IM)
-		set_c0_status(irq_hwmask[irq] & ST0_IM);
-#endif /* CONFIG_MIPS_MT_SMTC */
+	smtc_im_ack_irq(irq);
 }
 
 /*
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index aeded6c17de..a990aad2f04 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -74,20 +74,12 @@ EXPORT_SYMBOL_GPL(free_irqno);
  */
 void ack_bad_irq(unsigned int irq)
 {
+	smtc_im_ack_irq(irq);
 	printk("unexpected IRQ # %d\n", irq);
 }
 
 atomic_t irq_err_count;
 
-#ifdef CONFIG_MIPS_MT_SMTC
-/*
- * SMTC Kernel needs to manipulate low-level CPU interrupt mask
- * in do_IRQ. These are passed in setup_irq_smtc() and stored
- * in this table.
- */
-unsigned long irq_hwmask[NR_IRQS];
-#endif /* CONFIG_MIPS_MT_SMTC */
-
 /*
  * Generic, controller-independent functions:
  */
diff --git a/arch/mips/kernel/irq_txx9.c b/arch/mips/kernel/irq_txx9.c
new file mode 100644
index 00000000000..a4d1462c27f
--- /dev/null
+++ b/arch/mips/kernel/irq_txx9.c
@@ -0,0 +1,192 @@
+/*
+ * linux/arch/mips/kernel/irq_txx9.c
+ *
+ * Based on linux/arch/mips/jmr3927/rbhma3100/irq.c,
+ *          linux/arch/mips/tx4927/common/tx4927_irq.c,
+ *          linux/arch/mips/tx4938/common/irq.c
+ *
+ * Copyright 2001, 2003-2005 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ *         ahennessy@mvista.com
+ *         source@mvista.com
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <asm/txx9irq.h>
+
+struct txx9_irc_reg {
+	u32 cer;
+	u32 cr[2];
+	u32 unused0;
+	u32 ilr[8];
+	u32 unused1[4];
+	u32 imr;
+	u32 unused2[7];
+	u32 scr;
+	u32 unused3[7];
+	u32 ssr;
+	u32 unused4[7];
+	u32 csr;
+};
+
+/* IRCER : Int. Control Enable */
+#define TXx9_IRCER_ICE	0x00000001
+
+/* IRCR : Int. Control */
+#define TXx9_IRCR_LOW	0x00000000
+#define TXx9_IRCR_HIGH	0x00000001
+#define TXx9_IRCR_DOWN	0x00000002
+#define TXx9_IRCR_UP	0x00000003
+#define TXx9_IRCR_EDGE(cr)	((cr) & 0x00000002)
+
+/* IRSCR : Int. Status Control */
+#define TXx9_IRSCR_EIClrE	0x00000100
+#define TXx9_IRSCR_EIClr_MASK	0x0000000f
+
+/* IRCSR : Int. Current Status */
+#define TXx9_IRCSR_IF	0x00010000
+#define TXx9_IRCSR_ILV_MASK	0x00000700
+#define TXx9_IRCSR_IVL_MASK	0x0000001f
+
+#define irc_dlevel	0
+#define irc_elevel	1
+
+static struct txx9_irc_reg __iomem *txx9_ircptr __read_mostly;
+
+static struct {
+	unsigned char level;
+	unsigned char mode;
+} txx9irq[TXx9_MAX_IR] __read_mostly;
+
+static void txx9_irq_unmask(unsigned int irq)
+{
+	unsigned int irq_nr = irq - TXX9_IRQ_BASE;
+	u32 __iomem *ilrp = &txx9_ircptr->ilr[(irq_nr % 16 ) / 2];
+	int ofs = irq_nr / 16 * 16 + (irq_nr & 1) * 8;
+
+	__raw_writel((__raw_readl(ilrp) & ~(0xff << ofs))
+		     | (txx9irq[irq_nr].level << ofs),
+		     ilrp);
+#ifdef CONFIG_CPU_TX39XX
+	/* update IRCSR */
+	__raw_writel(0, &txx9_ircptr->imr);
+	__raw_writel(irc_elevel, &txx9_ircptr->imr);
+#endif
+}
+
+static inline void txx9_irq_mask(unsigned int irq)
+{
+	unsigned int irq_nr = irq - TXX9_IRQ_BASE;
+	u32 __iomem *ilrp = &txx9_ircptr->ilr[(irq_nr % 16) / 2];
+	int ofs = irq_nr / 16 * 16 + (irq_nr & 1) * 8;
+
+	__raw_writel((__raw_readl(ilrp) & ~(0xff << ofs))
+		     | (irc_dlevel << ofs),
+		     ilrp);
+#ifdef CONFIG_CPU_TX39XX
+	/* update IRCSR */
+	__raw_writel(0, &txx9_ircptr->imr);
+	__raw_writel(irc_elevel, &txx9_ircptr->imr);
+	/* flush write buffer */
+	__raw_readl(&txx9_ircptr->ssr);
+#else
+	mmiowb();
+#endif
+}
+
+static void txx9_irq_mask_ack(unsigned int irq)
+{
+	unsigned int irq_nr = irq - TXX9_IRQ_BASE;
+
+	txx9_irq_mask(irq);
+	/* clear edge detection */
+	if (unlikely(TXx9_IRCR_EDGE(txx9irq[irq_nr].mode)))
+		__raw_writel(TXx9_IRSCR_EIClrE | irq_nr, &txx9_ircptr->scr);
+}
+
+static int txx9_irq_set_type(unsigned int irq, unsigned int flow_type)
+{
+	unsigned int irq_nr = irq - TXX9_IRQ_BASE;
+	u32 cr;
+	u32 __iomem *crp;
+	int ofs;
+	int mode;
+
+	if (flow_type & IRQF_TRIGGER_PROBE)
+		return 0;
+	switch (flow_type & IRQF_TRIGGER_MASK) {
+	case IRQF_TRIGGER_RISING:	mode = TXx9_IRCR_UP;	break;
+	case IRQF_TRIGGER_FALLING:	mode = TXx9_IRCR_DOWN;	break;
+	case IRQF_TRIGGER_HIGH:	mode = TXx9_IRCR_HIGH;	break;
+	case IRQF_TRIGGER_LOW:	mode = TXx9_IRCR_LOW;	break;
+	default:
+		return -EINVAL;
+	}
+	crp = &txx9_ircptr->cr[(unsigned int)irq_nr / 8];
+	cr = __raw_readl(crp);
+	ofs = (irq_nr & (8 - 1)) * 2;
+	cr &= ~(0x3 << ofs);
+	cr |= (mode & 0x3) << ofs;
+	__raw_writel(cr, crp);
+	txx9irq[irq_nr].mode = mode;
+	return 0;
+}
+
+static struct irq_chip txx9_irq_chip = {
+	.name		= "TXX9",
+	.ack		= txx9_irq_mask_ack,
+	.mask		= txx9_irq_mask,
+	.mask_ack	= txx9_irq_mask_ack,
+	.unmask		= txx9_irq_unmask,
+	.set_type	= txx9_irq_set_type,
+};
+
+void __init txx9_irq_init(unsigned long baseaddr)
+{
+	int i;
+
+	txx9_ircptr = ioremap(baseaddr, sizeof(struct txx9_irc_reg));
+	for (i = 0; i < TXx9_MAX_IR; i++) {
+		txx9irq[i].level = 4; /* middle level */
+		txx9irq[i].mode = TXx9_IRCR_LOW;
+		set_irq_chip_and_handler(TXX9_IRQ_BASE + i,
+					 &txx9_irq_chip, handle_level_irq);
+	}
+
+	/* mask all IRC interrupts */
+	__raw_writel(0, &txx9_ircptr->imr);
+	for (i = 0; i < 8; i++)
+		__raw_writel(0, &txx9_ircptr->ilr[i]);
+	/* setup IRC interrupt mode (Low Active) */
+	for (i = 0; i < 2; i++)
+		__raw_writel(0, &txx9_ircptr->cr[i]);
+	/* enable interrupt control */
+	__raw_writel(TXx9_IRCER_ICE, &txx9_ircptr->cer);
+	__raw_writel(irc_elevel, &txx9_ircptr->imr);
+}
+
+int __init txx9_irq_set_pri(int irc_irq, int new_pri)
+{
+	int old_pri;
+
+	if ((unsigned int)irc_irq >= TXx9_MAX_IR)
+		return 0;
+	old_pri = txx9irq[irc_irq].level;
+	txx9irq[irc_irq].level = new_pri;
+	return old_pri;
+}
+
+int txx9_irq(void)
+{
+	u32 csr = __raw_readl(&txx9_ircptr->csr);
+
+	if (likely(!(csr & TXx9_IRCSR_IF)))
+		return TXX9_IRQ_BASE + (csr & (TXx9_MAX_IR - 1));
+	return -1;
+}
diff --git a/arch/mips/kernel/machine_kexec.c b/arch/mips/kernel/machine_kexec.c
index 22960d67cf0..85beb9b0b2d 100644
--- a/arch/mips/kernel/machine_kexec.c
+++ b/arch/mips/kernel/machine_kexec.c
@@ -78,11 +78,8 @@ machine_kexec(struct kimage *image)
 	 */
 	local_irq_disable();
 
-	flush_icache_range(reboot_code_buffer,
-			   reboot_code_buffer + KEXEC_CONTROL_CODE_SIZE);
-
 	printk("Will call new kernel at %08lx\n", image->start);
 	printk("Bye ...\n");
-	flush_cache_all();
+	__flush_cache_all();
 	((noretfun_t) reboot_code_buffer)();
 }
diff --git a/arch/mips/kernel/mips-mt.c b/arch/mips/kernel/mips-mt.c
index 7169a4db37b..56750b02ab4 100644
--- a/arch/mips/kernel/mips-mt.c
+++ b/arch/mips/kernel/mips-mt.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/device.h>
+#include <linux/kallsyms.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/module.h>
@@ -84,8 +85,9 @@ void mips_mt_regdump(unsigned long mvpctl)
 				       read_vpe_c0_vpeconf0());
 				printk("   VPE%d.Status : %08lx\n",
 				       i, read_vpe_c0_status());
-				printk("   VPE%d.EPC : %08lx\n",
+				printk("   VPE%d.EPC : %08lx ",
 				       i, read_vpe_c0_epc());
+				print_symbol("%s\n", read_vpe_c0_epc());
 				printk("   VPE%d.Cause : %08lx\n",
 				       i, read_vpe_c0_cause());
 				printk("   VPE%d.Config7 : %08lx\n",
@@ -110,7 +112,8 @@ void mips_mt_regdump(unsigned long mvpctl)
 		}
 		printk("   TCStatus : %08lx\n", tcstatval);
 		printk("   TCBind : %08lx\n", read_tc_c0_tcbind());
-		printk("   TCRestart : %08lx\n", read_tc_c0_tcrestart());
+		printk("   TCRestart : %08lx ", read_tc_c0_tcrestart());
+		print_symbol("%s\n", read_tc_c0_tcrestart());
 		printk("   TCHalt : %08lx\n", haltval);
 		printk("   TCContext : %08lx\n", read_tc_c0_tccontext());
 		if (!haltval)
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index aab89e97abb..1ba00c15505 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -56,8 +56,6 @@ static struct chan_waitqueues {
 	struct mutex mutex;
 } channel_wqs[RTLX_CHANNELS];
 
-static struct irqaction irq;
-static int irq_num;
 static struct vpe_notifications notify;
 static int sp_stopping = 0;
 
@@ -111,7 +109,7 @@ static void __used dump_rtlx(void)
 static int rtlx_init(struct rtlx_info *rtlxi)
 {
 	if (rtlxi->id != RTLX_ID) {
-		printk(KERN_ERR "no valid RTLX id at 0x%p 0x%x\n", rtlxi, rtlxi->id);
+		printk(KERN_ERR "no valid RTLX id at 0x%p 0x%lx\n", rtlxi, rtlxi->id);
 		return -ENOEXEC;
 	}
 
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 53d7a977193..118be24224f 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -375,7 +375,7 @@ EXPORT(sysn32_call_table)
 	PTR	sys_mkdirat
 	PTR	sys_mknodat
 	PTR	sys_fchownat
-	PTR	sys_futimesat			/* 6255 */
+	PTR	compat_sys_futimesat		/* 6255 */
 	PTR	sys_newfstatat
 	PTR	sys_unlinkat
 	PTR	sys_renameat
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index b3ed731a24c..dd68afce7da 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -525,5 +525,5 @@ sys_call_table:
 	PTR	compat_sys_signalfd
 	PTR	compat_sys_timerfd
 	PTR	sys_eventfd
-	PTR	sys_fallocate			/* 4320 */
+	PTR	sys32_fallocate			/* 4320 */
 	.size	sys_call_table,.-sys_call_table
diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c
index 19b30d6f172..05dcce41632 100644
--- a/arch/mips/kernel/smp-mt.c
+++ b/arch/mips/kernel/smp-mt.c
@@ -287,7 +287,7 @@ void __init plat_prepare_cpus(unsigned int max_cpus)
  * (unsigned long)idle->thread_info the gp
  * assumes a 1:1 mapping of TC => VPE
  */
-void prom_boot_secondary(int cpu, struct task_struct *idle)
+void __cpuinit prom_boot_secondary(int cpu, struct task_struct *idle)
 {
 	struct thread_info *gp = task_thread_info(idle);
 	dvpe();
@@ -321,7 +321,7 @@ void prom_boot_secondary(int cpu, struct task_struct *idle)
 	evpe(EVPE_ENABLE);
 }
 
-void prom_init_secondary(void)
+void __cpuinit prom_init_secondary(void)
 {
 	/* Enable per-cpu interrupts */
 
@@ -330,7 +330,7 @@ void prom_init_secondary(void)
 	                (STATUSF_IP0 | STATUSF_IP1 | STATUSF_IP6 | STATUSF_IP7));
 }
 
-void prom_smp_finish(void)
+void __cpuinit prom_smp_finish(void)
 {
 	write_c0_compare(read_c0_count() + (8* mips_hpt_frequency/HZ));
 
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 16aa5d37117..f09404377ef 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -25,10 +25,11 @@
 #include <asm/smtc_proc.h>
 
 /*
- * This file should be built into the kernel only if CONFIG_MIPS_MT_SMTC is set.
+ * SMTC Kernel needs to manipulate low-level CPU interrupt mask
+ * in do_IRQ. These are passed in setup_irq_smtc() and stored
+ * in this table.
  */
-
-#define MIPS_CPU_IPI_IRQ	1
+unsigned long irq_hwmask[NR_IRQS];
 
 #define LOCK_MT_PRA() \
 	local_irq_save(flags); \
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index d48d1d5bea0..9a5596bf857 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -16,6 +16,7 @@
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/param.h>
+#include <linux/profile.h>
 #include <linux/time.h>
 #include <linux/timex.h>
 #include <linux/smp.h>
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index c8e291c8305..6379003f9d8 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -606,6 +606,8 @@ asmlinkage void do_ov(struct pt_regs *regs)
  */
 asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
 {
+	siginfo_t info;
+
 	die_if_kernel("FP exception in kernel code", regs);
 
 	if (fcr31 & FPU_CSR_UNI_X) {
@@ -641,9 +643,22 @@ asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
 			force_sig(sig, current);
 
 		return;
-	}
-
-	force_sig(SIGFPE, current);
+	} else if (fcr31 & FPU_CSR_INV_X)
+		info.si_code = FPE_FLTINV;
+	else if (fcr31 & FPU_CSR_DIV_X)
+		info.si_code = FPE_FLTDIV;
+	else if (fcr31 & FPU_CSR_OVF_X)
+		info.si_code = FPE_FLTOVF;
+	else if (fcr31 & FPU_CSR_UDF_X)
+		info.si_code = FPE_FLTUND;
+	else if (fcr31 & FPU_CSR_INE_X)
+		info.si_code = FPE_FLTRES;
+	else
+		info.si_code = __SI_FAULT;
+	info.si_signo = SIGFPE;
+	info.si_errno = 0;
+	info.si_addr = (void __user *) regs->cp0_epc;
+	force_sig_info(SIGFPE, &info, current);
 }
 
 asmlinkage void do_bp(struct pt_regs *regs)
@@ -1035,19 +1050,11 @@ void ejtag_exception_handler(struct pt_regs *regs)
 /*
  * NMI exception handler.
  */
-void nmi_exception_handler(struct pt_regs *regs)
+NORET_TYPE void ATTRIB_NORET nmi_exception_handler(struct pt_regs *regs)
 {
-#ifdef CONFIG_MIPS_MT_SMTC
-	unsigned long dvpret = dvpe();
-	bust_spinlocks(1);
-	printk("NMI taken!!!!\n");
-	mips_mt_regdump(dvpret);
-#else
 	bust_spinlocks(1);
 	printk("NMI taken!!!!\n");
-#endif /* CONFIG_MIPS_MT_SMTC */
 	die("NMI", regs);
-	while(1) ;
 }
 
 #define VECTORSPACING 0x100	/* for EI/VI mode */
diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
index bc9bae2a73f..087ab997487 100644
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -45,6 +45,8 @@ SECTIONS
   __dbe_table : { *(__dbe_table) }
   __stop___dbe_table = .;
 
+  NOTES
+
   RODATA
 
   /* writeable */
@@ -142,15 +144,16 @@ SECTIONS
         *(.exitcall.exit)
 
 	/* ABI crap starts here */
-	*(.comment)
 	*(.MIPS.options)
-	*(.note)
 	*(.options)
 	*(.pdr)
 	*(.reginfo)
-	*(.mdebug*)
   }
 
+  /* These mark the ABI of the kernel for debuggers.  */
+  .mdebug.abi32 : { KEEP(*(.mdebug.abi32)) }
+  .mdebug.abi64 : { KEEP(*(.mdebug.abi64)) }
+
   /* This is the MIPS specific mdebug section.  */
   .mdebug : { *(.mdebug) }