Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Treat R14000 like R10000.
  [MIPS] Remove EXPERIMENTAL from PAGE_SIZE_16KB
  [MIPS] Update/Fix instruction definitions
  [MIPS] DSP and MDMX share the same config flag bit.
  [MIPS] Fix deadlock on MP with cache aliases.
  [MIPS] Use generic STABS_DEBUG macro.
  [MIPS] Create consistency in "system type" selection.
  [MIPS] Use generic DWARF_DEBUG
  [MIPS] Fix kgdb exception handler from user mode.
  [MIPS] Update struct sigcontext member names
  [MIPS] Update/fix futex assembly
  [MIPS] Remove support for sysmips(2) SETNAME and MIPS_RDNVRAM operations.
  [MIPS] Fix detection and handling of the 74K processor.
  [MIPS] Add missing 34K processor IDs
  [MIPS] Fix marking buddy of pte global for MIPS32 w/36-bit physical address
  [MIPS] AU1xxx mips_timer_interrupt() fixes
  [MIPS] Fix typo

arch/mips/Kconfig

@@ -13,7 +13,7 @@ choice
 	default SGI_IP22
 
 config MIPS_MTX1
-	bool "Support for 4G Systems MTX-1 board"
+	bool "4G Systems MTX-1 board"
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select SOC_AU1500
@@ -120,7 +120,7 @@ config MIPS_MIRAGE
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config MIPS_COBALT
-	bool "Support for Cobalt Server"
+	bool "Cobalt Server"
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select I8259
@@ -132,7 +132,7 @@ config MIPS_COBALT
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config MACH_DECSTATION
-	bool "Support for DECstations"
+	bool "DECstations"
 	select BOOT_ELF32
 	select DMA_NONCOHERENT
 	select EARLY_PRINTK
@@ -158,7 +158,7 @@ config MACH_DECSTATION
 	  otherwise choose R3000.
 
 config MIPS_EV64120
-	bool "Support for Galileo EV64120 Evaluation board (EXPERIMENTAL)"
+	bool "Galileo EV64120 Evaluation board (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
@@ -175,7 +175,7 @@ config MIPS_EV64120
 	  kernel for this platform.
 
 config MIPS_EV96100
-	bool "Support for Galileo EV96100 Evaluation board (EXPERIMENTAL)"
+	bool "Galileo EV96100 Evaluation board (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
@@ -195,7 +195,7 @@ config MIPS_EV96100
 	  here if you wish to build a kernel for this platform.
 
 config MIPS_IVR
-	bool "Support for Globespan IVR board"
+	bool "Globespan IVR board"
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select ITE_BOARD_GEN
@@ -211,7 +211,7 @@ config MIPS_IVR
 	  build a kernel for this platform.
 
 config MIPS_ITE8172
-	bool "Support for ITE 8172G board"
+	bool "ITE 8172G board"
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select ITE_BOARD_GEN
@@ -228,7 +228,7 @@ config MIPS_ITE8172
 	  a kernel for this platform.
 
 config MACH_JAZZ
-	bool "Support for the Jazz family of machines"
+	bool "Jazz family of machines"
 	select ARC
 	select ARC32
 	select ARCH_MAY_HAVE_PC_FDC
@@ -246,7 +246,7 @@ config MACH_JAZZ
 	 Olivetti M700-10 workstations.
 
 config LASAT
-	bool "Support for LASAT Networks platforms"
+	bool "LASAT Networks platforms"
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select MIPS_GT64120
@@ -258,7 +258,7 @@ config LASAT
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config MIPS_ATLAS
-	bool "Support for MIPS Atlas board"
+	bool "MIPS Atlas board"
 	select BOOT_ELF32
 	select DMA_NONCOHERENT
 	select IRQ_CPU
@@ -283,7 +283,7 @@ config MIPS_ATLAS
 	  board.
 
 config MIPS_MALTA
-	bool "Support for MIPS Malta board"
+	bool "MIPS Malta board"
 	select ARCH_MAY_HAVE_PC_FDC
 	select BOOT_ELF32
 	select HAVE_STD_PC_SERIAL_PORT
@@ -311,7 +311,7 @@ config MIPS_MALTA
 	  board.
 
 config MIPS_SEAD
-	bool "Support for MIPS SEAD board (EXPERIMENTAL)"
+	bool "MIPS SEAD board (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
 	select IRQ_CPU
 	select DMA_NONCOHERENT
@@ -328,7 +328,7 @@ config MIPS_SEAD
 	  board.
 
 config MIPS_SIM
-	bool 'Support for MIPS simulator (MIPSsim)'
+	bool 'MIPS simulator (MIPSsim)'
 	select DMA_NONCOHERENT
 	select IRQ_CPU
 	select SYS_HAS_CPU_MIPS32_R1
@@ -341,7 +341,7 @@ config MIPS_SIM
 	  emulator.
 
 config MOMENCO_JAGUAR_ATX
-	bool "Support for Momentum Jaguar board"
+	bool "Momentum Jaguar board"
 	select BOOT_ELF32
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
@@ -361,7 +361,7 @@ config MOMENCO_JAGUAR_ATX
 	  Momentum Computer <http://www.momenco.com/>.
 
 config MOMENCO_OCELOT
-	bool "Support for Momentum Ocelot board"
+	bool "Momentum Ocelot board"
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select IRQ_CPU
@@ -378,7 +378,7 @@ config MOMENCO_OCELOT
 	  Momentum Computer <http://www.momenco.com/>.
 
 config MOMENCO_OCELOT_3
-	bool "Support for Momentum Ocelot-3 board"
+	bool "Momentum Ocelot-3 board"
 	select BOOT_ELF32
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
@@ -397,7 +397,7 @@ config MOMENCO_OCELOT_3
 	  PMC-Sierra Rm79000 core.
 
 config MOMENCO_OCELOT_C
-	bool "Support for Momentum Ocelot-C board"
+	bool "Momentum Ocelot-C board"
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select IRQ_CPU
@@ -414,7 +414,7 @@ config MOMENCO_OCELOT_C
 	  Momentum Computer <http://www.momenco.com/>.
 
 config MOMENCO_OCELOT_G
-	bool "Support for Momentum Ocelot-G board"
+	bool "Momentum Ocelot-G board"
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select IRQ_CPU
@@ -431,23 +431,23 @@ config MOMENCO_OCELOT_G
 	  Momentum Computer <http://www.momenco.com/>.
 
 config MIPS_XXS1500
-	bool "Support for MyCable XXS1500 board"
+	bool "MyCable XXS1500 board"
 	select DMA_NONCOHERENT
 	select SOC_AU1500
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config PNX8550_V2PCI
-	bool "Support for Philips PNX8550 based Viper2-PCI board"
+	bool "Philips PNX8550 based Viper2-PCI board"
 	select PNX8550
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config PNX8550_JBS
-	bool "Support for Philips PNX8550 based JBS board"
+	bool "Philips PNX8550 based JBS board"
 	select PNX8550
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config DDB5074
-	bool "Support for NEC DDB Vrc-5074 (EXPERIMENTAL)"
+	bool "NEC DDB Vrc-5074 (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
 	select DDB5XXX_COMMON
 	select DMA_NONCOHERENT
@@ -465,7 +465,7 @@ config DDB5074
 	  evaluation board.
 
 config DDB5476
-	bool "Support for NEC DDB Vrc-5476"
+	bool "NEC DDB Vrc-5476"
 	select DDB5XXX_COMMON
 	select DMA_NONCOHERENT
 	select HAVE_STD_PC_SERIAL_PORT
@@ -486,7 +486,7 @@ config DDB5476
 	  IDE controller, PS2 keyboard, PS2 mouse, etc.
 
 config DDB5477
-	bool "Support for NEC DDB Vrc-5477"
+	bool "NEC DDB Vrc-5477"
 	select DDB5XXX_COMMON
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
@@ -504,13 +504,13 @@ config DDB5477
 	  ether port USB, AC97, PCI, etc.
 
 config MACH_VR41XX
-	bool "Support for NEC VR4100 series based machines"
+	bool "NEC VR41XX-based machines"
 	select SYS_HAS_CPU_VR41XX
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 
 config PMC_YOSEMITE
-	bool "Support for PMC-Sierra Yosemite eval board"
+	bool "PMC-Sierra Yosemite eval board"
 	select DMA_COHERENT
 	select HW_HAS_PCI
 	select IRQ_CPU
@@ -527,7 +527,7 @@ config PMC_YOSEMITE
 	  manufactured by PMC-Sierra.
 
 config QEMU
-	bool "Support for Qemu"
+	bool "Qemu"
 	select DMA_COHERENT
 	select GENERIC_ISA_DMA
 	select HAVE_STD_PC_SERIAL_PORT
@@ -547,7 +547,7 @@ config QEMU
 	  can be found at http://www.linux-mips.org/wiki/Qemu.
 
 config SGI_IP22
-	bool "Support for SGI IP22 (Indy/Indigo2)"
+	bool "SGI IP22 (Indy/Indigo2)"
 	select ARC
 	select ARC32
 	select BOOT_ELF32
@@ -567,7 +567,7 @@ config SGI_IP22
 	  that runs on these, say Y here.
 
 config SGI_IP27
-	bool "Support for SGI IP27 (Origin200/2000)"
+	bool "SGI IP27 (Origin200/2000)"
 	select ARC
 	select ARC64
 	select BOOT_ELF64
@@ -583,7 +583,7 @@ config SGI_IP27
 	  here.
 
 config SGI_IP32
-	bool "Support for SGI IP32 (O2) (EXPERIMENTAL)"
+	bool "SGI IP32 (O2) (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
 	select ARC
 	select ARC32
@@ -604,7 +604,7 @@ config SGI_IP32
 	  If you want this kernel to run on SGI O2 workstation, say Y here.
 
 config SIBYTE_BIGSUR
-	bool "Support for Sibyte BCM91480B-BigSur"
+	bool "Sibyte BCM91480B-BigSur"
 	select BOOT_ELF32
 	select DMA_COHERENT
 	select PCI_DOMAINS
@@ -615,7 +615,7 @@ config SIBYTE_BIGSUR
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config SIBYTE_SWARM
-	bool "Support for Sibyte BCM91250A-SWARM"
+	bool "Sibyte BCM91250A-SWARM"
 	select BOOT_ELF32
 	select DMA_COHERENT
 	select SIBYTE_SB1250
@@ -626,7 +626,7 @@ config SIBYTE_SWARM
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config SIBYTE_SENTOSA
-	bool "Support for Sibyte BCM91250E-Sentosa"
+	bool "Sibyte BCM91250E-Sentosa"
 	depends on EXPERIMENTAL
 	select BOOT_ELF32
 	select DMA_COHERENT
@@ -637,7 +637,7 @@ config SIBYTE_SENTOSA
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config SIBYTE_RHONE
-	bool "Support for Sibyte BCM91125E-Rhone"
+	bool "Sibyte BCM91125E-Rhone"
 	depends on EXPERIMENTAL
 	select BOOT_ELF32
 	select DMA_COHERENT
@@ -648,7 +648,7 @@ config SIBYTE_RHONE
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config SIBYTE_CARMEL
-	bool "Support for Sibyte BCM91120x-Carmel"
+	bool "Sibyte BCM91120x-Carmel"
 	depends on EXPERIMENTAL
 	select BOOT_ELF32
 	select DMA_COHERENT
@@ -659,7 +659,7 @@ config SIBYTE_CARMEL
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config SIBYTE_PTSWARM
-	bool "Support for Sibyte BCM91250PT-PTSWARM"
+	bool "Sibyte BCM91250PT-PTSWARM"
 	depends on EXPERIMENTAL
 	select BOOT_ELF32
 	select DMA_COHERENT
@@ -671,7 +671,7 @@ config SIBYTE_PTSWARM
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config SIBYTE_LITTLESUR
-	bool "Support for Sibyte BCM91250C2-LittleSur"
+	bool "Sibyte BCM91250C2-LittleSur"
 	depends on EXPERIMENTAL
 	select BOOT_ELF32
 	select DMA_COHERENT
@@ -683,7 +683,7 @@ config SIBYTE_LITTLESUR
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config SIBYTE_CRHINE
-	bool "Support for Sibyte BCM91120C-CRhine"
+	bool "Sibyte BCM91120C-CRhine"
 	depends on EXPERIMENTAL
 	select BOOT_ELF32
 	select DMA_COHERENT
@@ -694,7 +694,7 @@ config SIBYTE_CRHINE
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config SIBYTE_CRHONE
-	bool "Support for Sibyte BCM91125C-CRhone"
+	bool "Sibyte BCM91125C-CRhone"
 	depends on EXPERIMENTAL
 	select BOOT_ELF32
 	select DMA_COHERENT
@@ -706,7 +706,7 @@ config SIBYTE_CRHONE
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 
 config SNI_RM200_PCI
-	bool "Support for SNI RM200 PCI"
+	bool "SNI RM200 PCI"
 	select ARC
 	select ARC32
 	select ARCH_MAY_HAVE_PC_FDC
@@ -732,7 +732,7 @@ config SNI_RM200_PCI
 	  support this machine type.
 
 config TOSHIBA_JMR3927
-	bool "Support for Toshiba JMR-TX3927 board"
+	bool "Toshiba JMR-TX3927 board"
 	select DMA_NONCOHERENT
 	select HW_HAS_PCI
 	select MIPS_TX3927
@@ -743,7 +743,7 @@ config TOSHIBA_JMR3927
 	select TOSHIBA_BOARDS
 
 config TOSHIBA_RBTX4927
-	bool "Support for Toshiba TBTX49[23]7 board"
+	bool "Toshiba TBTX49[23]7 board"
 	select DMA_NONCOHERENT
 	select HAS_TXX9_SERIAL
 	select HW_HAS_PCI
@@ -760,7 +760,7 @@ config TOSHIBA_RBTX4927
 	  support this machine type
 
 config TOSHIBA_RBTX4938
-	bool "Support for Toshiba RBTX4938 board"
+	bool "Toshiba RBTX4938 board"
 	select HAVE_STD_PC_SERIAL_PORT
 	select DMA_NONCOHERENT
 	select GENERIC_ISA_DMA
@@ -1411,13 +1411,12 @@ config PAGE_SIZE_8KB
 
 config PAGE_SIZE_16KB
 	bool "16kB"
-	depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
+	depends on !CPU_R3000 && !CPU_TX39XX
 	help
 	  Using 16kB page size will result in higher performance kernel at
 	  the price of higher memory consumption.  This option is available on
-	  all non-R3000 family processor.  Not that at the time of this
-	  writing this option is still high experimental; there are also
-	  issues with compatibility of user applications.
+	  all non-R3000 family processors.  Note that you will need a suitable
+	  Linux distribution to support this.
 
 config PAGE_SIZE_64KB
 	bool "64kB"
@@ -1426,8 +1425,7 @@ config PAGE_SIZE_64KB
 	  Using 64kB page size will result in higher performance kernel at
 	  the price of higher memory consumption.  This option is available on
 	  all non-R3000 family processor.  Not that at the time of this
-	  writing this option is still high experimental; there are also
-	  issues with compatibility of user applications.
+	  writing this option is still high experimental.
 
 endchoice
 

arch/mips/au1000/common/irq.c

@@ -68,6 +68,7 @@
 
 extern void set_debug_traps(void);
 extern irq_cpustat_t irq_stat [NR_CPUS];
+extern void mips_timer_interrupt(struct pt_regs *regs);
 
 static void setup_local_irq(unsigned int irq, int type, int int_req);
 static unsigned int startup_irq(unsigned int irq);

arch/mips/au1000/common/time.c

@@ -116,6 +116,7 @@ void mips_timer_interrupt(struct pt_regs *regs)
 
 null:
 	ack_r4ktimer(0);
+	irq_exit();
 }
 
 #ifdef CONFIG_PM

arch/mips/kernel/asm-offsets.c

@@ -272,8 +272,8 @@ void output_sc_defines(void)
 	text("/* Linux sigcontext offsets. */");
 	offset("#define SC_REGS       ", struct sigcontext, sc_regs);
 	offset("#define SC_FPREGS     ", struct sigcontext, sc_fpregs);
-	offset("#define SC_MDHI       ", struct sigcontext, sc_hi);
-	offset("#define SC_MDLO       ", struct sigcontext, sc_lo);
+	offset("#define SC_MDHI       ", struct sigcontext, sc_mdhi);
+	offset("#define SC_MDLO       ", struct sigcontext, sc_mdlo);
 	offset("#define SC_PC         ", struct sigcontext, sc_pc);
 	offset("#define SC_FPC_CSR    ", struct sigcontext, sc_fpc_csr);
 	linefeed;

arch/mips/kernel/cpu-probe.c

@@ -121,6 +121,7 @@ static inline void check_wait(void)
 	case CPU_24K:
 	case CPU_25KF:
 	case CPU_34K:
+	case CPU_74K:
  	case CPU_PR4450:
 		cpu_wait = r4k_wait;
 		printk(" available.\n");
@@ -432,6 +433,15 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c)
 		             MIPS_CPU_LLSC;
 		c->tlbsize = 64;
 		break;
+	case PRID_IMP_R14000:
+		c->cputype = CPU_R14000;
+		c->isa_level = MIPS_CPU_ISA_IV;
+		c->options = MIPS_CPU_TLB | MIPS_CPU_4K_CACHE | MIPS_CPU_4KEX |
+		             MIPS_CPU_FPU | MIPS_CPU_32FPR |
+			     MIPS_CPU_COUNTER | MIPS_CPU_WATCH |
+		             MIPS_CPU_LLSC;
+		c->tlbsize = 64;
+		break;
 	}
 }
 
@@ -593,6 +603,9 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c)
 	case PRID_IMP_34K:
 		c->cputype = CPU_34K;
 		break;
+	case PRID_IMP_74K:
+		c->cputype = CPU_74K;
+		break;
 	}
 }
 

arch/mips/kernel/entry.S

@@ -101,7 +101,7 @@ FEXPORT(restore_all)			# restore full frame
 	EMT
 1:
 	mfc0	v1, CP0_TCSTATUS
-	/* We set IXMT above, XOR should cler it here */
+	/* We set IXMT above, XOR should clear it here */
 	xori	v1, v1, TCSTATUS_IXMT
 	or	v1, v0, v1
 	mtc0	v1, CP0_TCSTATUS

arch/mips/kernel/gdb-low.S

@@ -54,9 +54,11 @@
 		 */
 		mfc0	k0, CP0_CAUSE
 		andi	k0, k0, 0x7c
-		add	k1, k1, k0
-		PTR_L	k0, saved_vectors(k1)
-		jr	k0
+#ifdef CONFIG_64BIT
+		dsll	k0, k0, 1
+#endif
+		PTR_L	k1, saved_vectors(k0)
+		jr	k1
 		nop
 1:
 		move	k0, sp

arch/mips/kernel/proc.c

@@ -42,6 +42,7 @@ static const char *cpu_name[] = {
 	[CPU_R8000]	= "R8000",
 	[CPU_R10000]	= "R10000",
 	[CPU_R12000]	= "R12000",
+	[CPU_R14000]	= "R14000",
 	[CPU_R4300]	= "R4300",
 	[CPU_R4650]	= "R4650",
 	[CPU_R4700]	= "R4700",
@@ -74,6 +75,7 @@ static const char *cpu_name[] = {
 	[CPU_24K]	= "MIPS 24K",
 	[CPU_25KF]	= "MIPS 25Kf",
 	[CPU_34K]	= "MIPS 34K",
+	[CPU_74K]	= "MIPS 74K",
 	[CPU_VR4111]	= "NEC VR4111",
 	[CPU_VR4121]	= "NEC VR4121",
 	[CPU_VR4122]	= "NEC VR4122",

arch/mips/kernel/signal-common.h

@@ -31,7 +31,6 @@ setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
 	save_gp_reg(31);
 #undef save_gp_reg
 
-#ifdef CONFIG_32BIT
 	err |= __put_user(regs->hi, &sc->sc_mdhi);
 	err |= __put_user(regs->lo, &sc->sc_mdlo);
 	if (cpu_has_dsp) {
@@ -43,20 +42,6 @@ setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
 		err |= __put_user(mflo3(), &sc->sc_lo3);
 		err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
 	}
-#endif
-#ifdef CONFIG_64BIT
-	err |= __put_user(regs->hi, &sc->sc_hi[0]);
-	err |= __put_user(regs->lo, &sc->sc_lo[0]);
-	if (cpu_has_dsp) {
-		err |= __put_user(mfhi1(), &sc->sc_hi[1]);
-		err |= __put_user(mflo1(), &sc->sc_lo[1]);
-		err |= __put_user(mfhi2(), &sc->sc_hi[2]);
-		err |= __put_user(mflo2(), &sc->sc_lo[2]);
-		err |= __put_user(mfhi3(), &sc->sc_hi[3]);
-		err |= __put_user(mflo3(), &sc->sc_lo[3]);
-		err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
-	}
-#endif
 
 	err |= __put_user(!!used_math(), &sc->sc_used_math);
 
@@ -92,7 +77,6 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
 	current_thread_info()->restart_block.fn = do_no_restart_syscall;
 
 	err |= __get_user(regs->cp0_epc, &sc->sc_pc);
-#ifdef CONFIG_32BIT
 	err |= __get_user(regs->hi, &sc->sc_mdhi);
 	err |= __get_user(regs->lo, &sc->sc_mdlo);
 	if (cpu_has_dsp) {
@@ -104,20 +88,6 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
 		err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg);
 		err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
 	}
-#endif
-#ifdef CONFIG_64BIT
-	err |= __get_user(regs->hi, &sc->sc_hi[0]);
-	err |= __get_user(regs->lo, &sc->sc_lo[0]);
-	if (cpu_has_dsp) {
-		err |= __get_user(treg, &sc->sc_hi[1]); mthi1(treg);
-		err |= __get_user(treg, &sc->sc_lo[1]); mthi1(treg);
-		err |= __get_user(treg, &sc->sc_hi[2]); mthi2(treg);
-		err |= __get_user(treg, &sc->sc_lo[2]); mthi2(treg);
-		err |= __get_user(treg, &sc->sc_hi[3]); mthi3(treg);
-		err |= __get_user(treg, &sc->sc_lo[3]); mthi3(treg);
-		err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
-	}
-#endif
 
 #define restore_gp_reg(i) do {						\
 	err |= __get_user(regs->regs[i], &sc->sc_regs[i]);		\

arch/mips/kernel/syscall.c

@@ -280,27 +280,6 @@ asmlinkage int _sys_sysmips(int cmd, long arg1, int arg2, int arg3)
 	char	__user *name;
 
 	switch(cmd) {
-	case SETNAME: {
-		char nodename[__NEW_UTS_LEN + 1];
-
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-
-		name = (char __user *) arg1;
-
-		len = strncpy_from_user(nodename, name, __NEW_UTS_LEN);
-		if (len < 0)
-			return -EFAULT;
-
-		down_write(&uts_sem);
-		strncpy(system_utsname.nodename, nodename, len);
-		nodename[__NEW_UTS_LEN] = '\0';
-		strlcpy(system_utsname.nodename, nodename,
-		        sizeof(system_utsname.nodename));
-		up_write(&uts_sem);
-		return 0;
-	}
-
 	case MIPS_ATOMIC_SET:
 		printk(KERN_CRIT "How did I get here?\n");
 		return -EINVAL;
@@ -313,9 +292,6 @@ asmlinkage int _sys_sysmips(int cmd, long arg1, int arg2, int arg3)
 	case FLUSH_CACHE:
 		__flush_cache_all();
 		return 0;
-
-	case MIPS_RDNVRAM:
-		return -EIO;
 	}
 
 	return -EINVAL;

arch/mips/kernel/traps.c

@@ -902,6 +902,7 @@ static inline void parity_protection_init(void)
 {
 	switch (current_cpu_data.cputype) {
 	case CPU_24K:
+	case CPU_34K:
 	case CPU_5KC:
 		write_c0_ecc(0x80000000);
 		back_to_back_c0_hazard();

arch/mips/kernel/vmlinux.lds.S

@@ -151,23 +151,13 @@ SECTIONS
 
   /* This is the MIPS specific mdebug section.  */
   .mdebug : { *(.mdebug) }
-  /* These are needed for ELF backends which have not yet been
-     converted to the new style linker.  */
-  .stab 0 : { *(.stab) }
-  .stabstr 0 : { *(.stabstr) }
-  /* DWARF debug sections.
-     Symbols in the .debug DWARF section are relative to the beginning of the
-     section so we begin .debug at 0.  It's not clear yet what needs to happen
-     for the others.   */
-  .debug          0 : { *(.debug) }
-  .debug_srcinfo  0 : { *(.debug_srcinfo) }
-  .debug_aranges  0 : { *(.debug_aranges) }
-  .debug_pubnames 0 : { *(.debug_pubnames) }
-  .debug_sfnames  0 : { *(.debug_sfnames) }
-  .line           0 : { *(.line) }
+
+  STABS_DEBUG
+
+  DWARF_DEBUG
+
   /* These must appear regardless of  .  */
   .gptab.sdata : { *(.gptab.data) *(.gptab.sdata) }
   .gptab.sbss : { *(.gptab.bss) *(.gptab.sbss) }
-  .comment : { *(.comment) }
   .note : { *(.note) }
 }

arch/mips/mm/c-r4k.c

@@ -29,6 +29,27 @@
 #include <asm/war.h>
 #include <asm/cacheflush.h> /* for run_uncached() */
 
+
+/*
+ * Special Variant of smp_call_function for use by cache functions:
+ *
+ *  o No return value
+ *  o collapses to normal function call on UP kernels
+ *  o collapses to normal function call on systems with a single shared
+ *    primary cache.
+ */
+static inline void r4k_on_each_cpu(void (*func) (void *info), void *info,
+                                   int retry, int wait)
+{
+	preempt_disable();
+
+#if !defined(CONFIG_MIPS_MT_SMP) && !defined(CONFIG_MIPS_MT_SMTC)
+	smp_call_function(func, info, retry, wait);
+#endif
+	func(info);
+	preempt_enable();
+}
+
 /*
  * Must die.
  */
@@ -299,7 +320,7 @@ static void r4k_flush_cache_all(void)
 	if (!cpu_has_dc_aliases)
 		return;
 
-	on_each_cpu(local_r4k_flush_cache_all, NULL, 1, 1);
+	r4k_on_each_cpu(local_r4k_flush_cache_all, NULL, 1, 1);
 }
 
 static inline void local_r4k___flush_cache_all(void * args)
@@ -314,13 +335,14 @@ static inline void local_r4k___flush_cache_all(void * args)
 	case CPU_R4400MC:
 	case CPU_R10000:
 	case CPU_R12000:
+	case CPU_R14000:
 		r4k_blast_scache();
 	}
 }
 
 static void r4k___flush_cache_all(void)
 {
-	on_each_cpu(local_r4k___flush_cache_all, NULL, 1, 1);
+	r4k_on_each_cpu(local_r4k___flush_cache_all, NULL, 1, 1);
 }
 
 static inline void local_r4k_flush_cache_range(void * args)
@@ -341,7 +363,7 @@ static inline void local_r4k_flush_cache_range(void * args)
 static void r4k_flush_cache_range(struct vm_area_struct *vma,
 	unsigned long start, unsigned long end)
 {
-	on_each_cpu(local_r4k_flush_cache_range, vma, 1, 1);
+	r4k_on_each_cpu(local_r4k_flush_cache_range, vma, 1, 1);
 }
 
 static inline void local_r4k_flush_cache_mm(void * args)
@@ -370,7 +392,7 @@ static void r4k_flush_cache_mm(struct mm_struct *mm)
 	if (!cpu_has_dc_aliases)
 		return;
 
-	on_each_cpu(local_r4k_flush_cache_mm, mm, 1, 1);
+	r4k_on_each_cpu(local_r4k_flush_cache_mm, mm, 1, 1);
 }
 
 struct flush_cache_page_args {
@@ -461,7 +483,7 @@ static void r4k_flush_cache_page(struct vm_area_struct *vma,
 	args.addr = addr;
 	args.pfn = pfn;
 
-	on_each_cpu(local_r4k_flush_cache_page, &args, 1, 1);
+	r4k_on_each_cpu(local_r4k_flush_cache_page, &args, 1, 1);
 }
 
 static inline void local_r4k_flush_data_cache_page(void * addr)
@@ -471,7 +493,7 @@ static inline void local_r4k_flush_data_cache_page(void * addr)
 
 static void r4k_flush_data_cache_page(unsigned long addr)
 {
-	on_each_cpu(local_r4k_flush_data_cache_page, (void *) addr, 1, 1);
+	r4k_on_each_cpu(local_r4k_flush_data_cache_page, (void *) addr, 1, 1);
 }
 
 struct flush_icache_range_args {
@@ -514,7 +536,7 @@ static void r4k_flush_icache_range(unsigned long start, unsigned long end)
 	args.start = start;
 	args.end = end;
 
-	on_each_cpu(local_r4k_flush_icache_range, &args, 1, 1);
+	r4k_on_each_cpu(local_r4k_flush_icache_range, &args, 1, 1);
 	instruction_hazard();
 }
 
@@ -590,7 +612,7 @@ static void r4k_flush_icache_page(struct vm_area_struct *vma,
 	args.vma = vma;
 	args.page = page;
 
-	on_each_cpu(local_r4k_flush_icache_page, &args, 1, 1);
+	r4k_on_each_cpu(local_r4k_flush_icache_page, &args, 1, 1);
 }
 
 
@@ -689,7 +711,7 @@ static void local_r4k_flush_cache_sigtramp(void * arg)
 
 static void r4k_flush_cache_sigtramp(unsigned long addr)
 {
-	on_each_cpu(local_r4k_flush_cache_sigtramp, (void *) addr, 1, 1);
+	r4k_on_each_cpu(local_r4k_flush_cache_sigtramp, (void *) addr, 1, 1);
 }
 
 static void r4k_flush_icache_all(void)
@@ -812,6 +834,7 @@ static void __init probe_pcache(void)
 
 	case CPU_R10000:
 	case CPU_R12000:
+	case CPU_R14000:
 		icache_size = 1 << (12 + ((config & R10K_CONF_IC) >> 29));
 		c->icache.linesz = 64;
 		c->icache.ways = 2;
@@ -965,9 +988,11 @@ static void __init probe_pcache(void)
 		c->dcache.flags |= MIPS_CACHE_PINDEX;
 	case CPU_R10000:
 	case CPU_R12000:
+	case CPU_R14000:
 	case CPU_SB1:
 		break;
 	case CPU_24K:
+	case CPU_34K:
 		if (!(read_c0_config7() & (1 << 16)))
 	default:
 			if (c->dcache.waysize > PAGE_SIZE)
@@ -1091,6 +1116,7 @@ static void __init setup_scache(void)
 
 	case CPU_R10000:
 	case CPU_R12000:
+	case CPU_R14000:
 		scache_size = 0x80000 << ((config & R10K_CONF_SS) >> 16);
 		c->scache.linesz = 64 << ((config >> 13) & 1);
 		c->scache.ways = 2;

arch/mips/mm/pg-r4k.c

@@ -357,6 +357,7 @@ void __init build_clear_page(void)
 
 		case CPU_R10000:
 		case CPU_R12000:
+		case CPU_R14000:
 			pref_src_mode = Pref_LoadStreamed;
 			pref_dst_mode = Pref_StoreStreamed;
 			break;

arch/mips/mm/tlbex.c

@@ -875,6 +875,7 @@ static __init void build_tlb_write_entry(u32 **p, struct label **l,
 
 	case CPU_R10000:
 	case CPU_R12000:
+	case CPU_R14000:
 	case CPU_4KC:
 	case CPU_SB1:
 	case CPU_SB1A:
@@ -906,6 +907,7 @@ static __init void build_tlb_write_entry(u32 **p, struct label **l,
 	case CPU_4KEC:
 	case CPU_24K:
 	case CPU_34K:
+	case CPU_74K:
 		i_ehb(p);
 		tlbw(p);
 		break;

arch/mips/oprofile/common.c

@@ -80,6 +80,7 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
 	case CPU_24K:
 	case CPU_25KF:
 	case CPU_34K:
+	case CPU_74K:
 	case CPU_SB1:
 	case CPU_SB1A:
 		lmodel = &op_model_mipsxx;

arch/mips/oprofile/op_model_mipsxx.c

@@ -205,6 +205,10 @@ static int __init mipsxx_init(void)
 	case CPU_34K:
 		op_model_mipsxx.cpu_type = "mips/34K";
 		break;
+
+	case CPU_74K:
+		op_model_mipsxx.cpu_type = "mips/74K";
+		break;
 #endif
 
 	case CPU_5KC:

include/asm-mips/cpu.h

@@ -51,6 +51,7 @@
 #define PRID_IMP_R4300		0x0b00
 #define PRID_IMP_VR41XX		0x0c00
 #define PRID_IMP_R12000		0x0e00
+#define PRID_IMP_R14000		0x0f00
 #define PRID_IMP_R8000		0x1000
 #define PRID_IMP_PR4450		0x1200
 #define PRID_IMP_R4600		0x2000
@@ -87,6 +88,7 @@
 #define PRID_IMP_24K		0x9300
 #define PRID_IMP_34K		0x9500
 #define PRID_IMP_24KE		0x9600
+#define PRID_IMP_74K		0x9700
 
 /*
  * These are the PRID's for when 23:16 == PRID_COMP_SIBYTE
@@ -196,7 +198,9 @@
 #define CPU_34K			60
 #define CPU_PR4450		61
 #define CPU_SB1A		62
-#define CPU_LAST		62
+#define CPU_74K			63
+#define CPU_R14000		64
+#define CPU_LAST		64
 
 /*
  * ISA Level encodings

include/asm-mips/futex.h

@@ -7,6 +7,7 @@
 #include <linux/futex.h>
 #include <asm/errno.h>
 #include <asm/uaccess.h>
+#include <asm/war.h>
 
 #ifdef CONFIG_SMP
 #define __FUTEX_SMP_SYNC "	sync					\n"
@@ -16,30 +17,58 @@
 
 #define __futex_atomic_op(insn, ret, oldval, uaddr, oparg)		\
 {									\
-	__asm__ __volatile__(						\
-	"	.set	push					\n"	\
-	"	.set	noat					\n"	\
-	"	.set	mips3					\n"	\
-	"1:	ll	%1, (%3)	# __futex_atomic_op1	\n"	\
-	"	.set	mips0					\n"	\
-	"	" insn	"					\n"	\
-	"	.set	mips3					\n"	\
-	"2:	sc	$1, (%3)				\n"	\
-	"	beqzl	$1, 1b					\n"	\
-	__FUTEX_SMP_SYNC						\
-	"3:							\n"	\
-	"	.set	pop					\n"	\
-	"	.set	mips0					\n"	\
-	"	.section .fixup,\"ax\"				\n"	\
-	"4:	li	%0, %5					\n"	\
-	"	j	2b					\n"	\
-	"	.previous					\n"	\
-	"	.section __ex_table,\"a\"			\n"	\
-	"	"__UA_ADDR "\t1b, 4b				\n"	\
-	"	"__UA_ADDR "\t2b, 4b				\n"	\
-	"	.previous					\n"	\
-	: "=r" (ret), "=r" (oldval)					\
-	: "0" (0), "r" (uaddr), "Jr" (oparg), "i" (-EFAULT));		\
+	if (cpu_has_llsc && R10000_LLSC_WAR) {				\
+		__asm__ __volatile__(					\
+		"	.set	push				\n"	\
+		"	.set	noat				\n"	\
+		"	.set	mips3				\n"	\
+		"1:	ll	%1, (%3)	# __futex_atomic_op	\n" \
+		"	.set	mips0				\n"	\
+		"	" insn	"				\n"	\
+		"	.set	mips3				\n"	\
+		"2:	sc	$1, (%3)			\n"	\
+		"	beqzl	$1, 1b				\n"	\
+		__FUTEX_SMP_SYNC					\
+		"3:						\n"	\
+		"	.set	pop				\n"	\
+		"	.set	mips0				\n"	\
+		"	.section .fixup,\"ax\"			\n"	\
+		"4:	li	%0, %5				\n"	\
+		"	j	2b				\n"	\
+		"	.previous				\n"	\
+		"	.section __ex_table,\"a\"		\n"	\
+		"	"__UA_ADDR "\t1b, 4b			\n"	\
+		"	"__UA_ADDR "\t2b, 4b			\n"	\
+		"	.previous				\n"	\
+		: "=r" (ret), "=r" (oldval)				\
+		: "0" (0), "r" (uaddr), "Jr" (oparg), "i" (-EFAULT));	\
+	} else if (cpu_has_llsc) {					\
+		__asm__ __volatile__(					\
+		"	.set	push				\n"	\
+		"	.set	noat				\n"	\
+		"	.set	mips3				\n"	\
+		"1:	ll	%1, (%3)	# __futex_atomic_op	\n" \
+		"	.set	mips0				\n"	\
+		"	" insn	"				\n"	\
+		"	.set	mips3				\n"	\
+		"2:	sc	$1, (%3)			\n"	\
+		"	beqz	$1, 1b				\n"	\
+		__FUTEX_SMP_SYNC					\
+		"3:						\n"	\
+		"	.set	pop				\n"	\
+		"	.set	mips0				\n"	\
+		"	.section .fixup,\"ax\"			\n"	\
+		"4:	li	%0, %5				\n"	\
+		"	j	2b				\n"	\
+		"	.previous				\n"	\
+		"	.section __ex_table,\"a\"		\n"	\
+		"	"__UA_ADDR "\t1b, 4b			\n"	\
+		"	"__UA_ADDR "\t2b, 4b			\n"	\
+		"	.previous				\n"	\
+		: "=r" (ret), "=r" (oldval)				\
+		: "0" (0), "r" (uaddr), "Jr" (oparg), "i" (-EFAULT));	\
+	} else								\
+		ret = -ENOSYS;						\
 }
 
 static inline int
@@ -102,7 +131,69 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
 static inline int
 futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
 {
-	return -ENOSYS;
+	int retval;
+
+	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+		return -EFAULT;
+
+	if (cpu_has_llsc && R10000_LLSC_WAR) {
+		__asm__ __volatile__(
+		"# futex_atomic_cmpxchg_inatomic			\n"
+		"	.set	push					\n"
+		"	.set	noat					\n"
+		"	.set	mips3					\n"
+		"1:	ll	%0, %2					\n"
+		"	bne	%0, %z3, 3f				\n"
+		"	.set	mips0					\n"
+		"	move	$1, %z4					\n"
+		"	.set	mips3					\n"
+		"2:	sc	$1, %1					\n"
+		"	beqzl	$1, 1b					\n"
+		__FUTEX_SMP_SYNC
+		"3:							\n"
+		"	.set	pop					\n"
+		"	.section .fixup,\"ax\"				\n"
+		"4:	li	%0, %5					\n"
+		"	j	3b					\n"
+		"	.previous					\n"
+		"	.section __ex_table,\"a\"			\n"
+		"	"__UA_ADDR "\t1b, 4b				\n"
+		"	"__UA_ADDR "\t2b, 4b				\n"
+		"	.previous					\n"
+		: "=&r" (retval), "=R" (*uaddr)
+		: "R" (*uaddr), "Jr" (oldval), "Jr" (newval), "i" (-EFAULT)
+		: "memory");
+	} else if (cpu_has_llsc) {
+		__asm__ __volatile__(
+		"# futex_atomic_cmpxchg_inatomic			\n"
+		"	.set	push					\n"
+		"	.set	noat					\n"
+		"	.set	mips3					\n"
+		"1:	ll	%0, %2					\n"
+		"	bne	%0, %z3, 3f				\n"
+		"	.set	mips0					\n"
+		"	move	$1, %z4					\n"
+		"	.set	mips3					\n"
+		"2:	sc	$1, %1					\n"
+		"	beqz	$1, 1b					\n"
+		__FUTEX_SMP_SYNC
+		"3:							\n"
+		"	.set	pop					\n"
+		"	.section .fixup,\"ax\"				\n"
+		"4:	li	%0, %5					\n"
+		"	j	3b					\n"
+		"	.previous					\n"
+		"	.section __ex_table,\"a\"			\n"
+		"	"__UA_ADDR "\t1b, 4b				\n"
+		"	"__UA_ADDR "\t2b, 4b				\n"
+		"	.previous					\n"
+		: "=&r" (retval), "=R" (*uaddr)
+		: "R" (*uaddr), "Jr" (oldval), "Jr" (newval), "i" (-EFAULT)
+		: "memory");
+	} else
+		return -ENOSYS;
+
+	return retval;
 }
 
 #endif

include/asm-mips/inst.h

@@ -6,6 +6,7 @@
  * for more details.
  *
  * Copyright (C) 1996, 2000 by Ralf Baechle
+ * Copyright (C) 2006 by Thiemo Seufer
  */
 #ifndef _ASM_INST_H
 #define _ASM_INST_H
@@ -21,14 +22,14 @@ enum major_op {
 	cop0_op, cop1_op, cop2_op, cop1x_op,
 	beql_op, bnel_op, blezl_op, bgtzl_op,
 	daddi_op, daddiu_op, ldl_op, ldr_op,
-	major_1c_op, jalx_op, major_1e_op, major_1f_op,
+	spec2_op, jalx_op, mdmx_op, spec3_op,
 	lb_op, lh_op, lwl_op, lw_op,
 	lbu_op, lhu_op, lwr_op, lwu_op,
 	sb_op, sh_op, swl_op, sw_op,
 	sdl_op, sdr_op, swr_op, cache_op,
 	ll_op, lwc1_op, lwc2_op, pref_op,
 	lld_op, ldc1_op, ldc2_op, ld_op,
-	sc_op, swc1_op, swc2_op, rdhwr_op,
+	sc_op, swc1_op, swc2_op, major_3b_op,
 	scd_op, sdc1_op, sdc2_op, sd_op
 };
 
@@ -37,7 +38,7 @@ enum major_op {
  */
 enum spec_op {
 	sll_op, movc_op, srl_op, sra_op,
-	sllv_op, srlv_op, srav_op, spec1_unused_op, /* Opcode 0x07 is unused */
+	sllv_op, pmon_op, srlv_op, srav_op,
 	jr_op, jalr_op, movz_op, movn_op,
 	syscall_op, break_op, spim_op, sync_op,
 	mfhi_op, mthi_op, mflo_op, mtlo_op,
@@ -54,6 +55,28 @@ enum spec_op {
 	dsll32_op, spec8_unused_op, dsrl32_op, dsra32_op
 };
 
+/*
+ * func field of spec2 opcode.
+ */
+enum spec2_op {
+	madd_op, maddu_op, mul_op, spec2_3_unused_op,
+	msub_op, msubu_op, /* more unused ops */
+	clz_op = 0x20, clo_op,
+	dclz_op = 0x24, dclo_op,
+	sdbpp_op = 0x3f
+};
+
+/*
+ * func field of spec3 opcode.
+ */
+enum spec3_op {
+	ext_op, dextm_op, dextu_op, dext_op,
+	ins_op, dinsm_op, dinsu_op, dins_op,
+	bshfl_op = 0x20,
+	dbshfl_op = 0x24,
+	rdhwr_op = 0x3f
+};
+
 /*
  * rt field of bcond opcodes.
  */
@@ -151,8 +174,8 @@ enum cop1x_func {
  * func field for mad opcodes (MIPS IV).
  */
 enum mad_func {
-	madd_op      = 0x08, msub_op      = 0x0a,
-	nmadd_op     = 0x0c, nmsub_op     = 0x0e
+	madd_fp_op      = 0x08, msub_fp_op      = 0x0a,
+	nmadd_fp_op     = 0x0c, nmsub_fp_op     = 0x0e
 };
 
 /*

include/asm-mips/mipsregs.h

@@ -291,7 +291,7 @@
 #define ST0_DL			(_ULCAST_(1) << 24)
 
 /*
- * Enable the MIPS DSP ASE
+ * Enable the MIPS MDMX and DSP ASEs
  */
 #define ST0_MX			0x01000000
 

include/asm-mips/pgtable.h

@@ -82,10 +82,11 @@ extern void paging_init(void);
 #define pmd_page(pmd)		(pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
 #define pmd_page_kernel(pmd)	pmd_val(pmd)
 
-#define pte_none(pte)		(!(pte_val(pte) & ~_PAGE_GLOBAL))
-#define pte_present(pte)	(pte_val(pte) & _PAGE_PRESENT)
-
 #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1)
+
+#define pte_none(pte)		(!(((pte).pte_low | (pte).pte_high) & ~_PAGE_GLOBAL))
+#define pte_present(pte)	((pte).pte_low & _PAGE_PRESENT)
+
 static inline void set_pte(pte_t *ptep, pte_t pte)
 {
 	ptep->pte_high = pte.pte_high;
@@ -93,27 +94,35 @@ static inline void set_pte(pte_t *ptep, pte_t pte)
 	ptep->pte_low = pte.pte_low;
 	//printk("pte_high %x pte_low %x\n", ptep->pte_high, ptep->pte_low);
 
-	if (pte_val(pte) & _PAGE_GLOBAL) {
+	if (pte.pte_low & _PAGE_GLOBAL) {
 		pte_t *buddy = ptep_buddy(ptep);
 		/*
 		 * Make sure the buddy is global too (if it's !none,
 		 * it better already be global)
 		 */
-		if (pte_none(*buddy))
-			buddy->pte_low |= _PAGE_GLOBAL;
+		if (pte_none(*buddy)) {
+			buddy->pte_low  |= _PAGE_GLOBAL;
+			buddy->pte_high |= _PAGE_GLOBAL;
+		}
 	}
 }
 #define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
 
 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
+	pte_t null = __pte(0);
+
 	/* Preserve global status for the pair */
-	if (pte_val(*ptep_buddy(ptep)) & _PAGE_GLOBAL)
-		set_pte_at(mm, addr, ptep, __pte(_PAGE_GLOBAL));
-	else
-		set_pte_at(mm, addr, ptep, __pte(0));
+	if (ptep_buddy(ptep)->pte_low & _PAGE_GLOBAL)
+		null.pte_low = null.pte_high = _PAGE_GLOBAL;
+
+	set_pte_at(mm, addr, ptep, null);
 }
 #else
+
+#define pte_none(pte)		(!(pte_val(pte) & ~_PAGE_GLOBAL))
+#define pte_present(pte)	(pte_val(pte) & _PAGE_PRESENT)
+
 /*
  * Certain architectures need to do special things when pte's
  * within a page table are directly modified.  Thus, the following
@@ -174,75 +183,76 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
  */
 static inline int pte_user(pte_t pte)	{ BUG(); return 0; }
 #if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1)
-static inline int pte_read(pte_t pte)	{ return (pte).pte_low & _PAGE_READ; }
-static inline int pte_write(pte_t pte)	{ return (pte).pte_low & _PAGE_WRITE; }
-static inline int pte_dirty(pte_t pte)	{ return (pte).pte_low & _PAGE_MODIFIED; }
-static inline int pte_young(pte_t pte)	{ return (pte).pte_low & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)	{ return (pte).pte_low & _PAGE_FILE; }
+static inline int pte_read(pte_t pte)	{ return pte.pte_low & _PAGE_READ; }
+static inline int pte_write(pte_t pte)	{ return pte.pte_low & _PAGE_WRITE; }
+static inline int pte_dirty(pte_t pte)	{ return pte.pte_low & _PAGE_MODIFIED; }
+static inline int pte_young(pte_t pte)	{ return pte.pte_low & _PAGE_ACCESSED; }
+static inline int pte_file(pte_t pte)	{ return pte.pte_low & _PAGE_FILE; }
+
 static inline pte_t pte_wrprotect(pte_t pte)
 {
-	(pte).pte_low &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
-	(pte).pte_high &= ~_PAGE_SILENT_WRITE;
+	pte.pte_low  &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
+	pte.pte_high &= ~_PAGE_SILENT_WRITE;
 	return pte;
 }
 
 static inline pte_t pte_rdprotect(pte_t pte)
 {
-	(pte).pte_low &= ~(_PAGE_READ | _PAGE_SILENT_READ);
-	(pte).pte_high &= ~_PAGE_SILENT_READ;
+	pte.pte_low  &= ~(_PAGE_READ | _PAGE_SILENT_READ);
+	pte.pte_high &= ~_PAGE_SILENT_READ;
 	return pte;
 }
 
 static inline pte_t pte_mkclean(pte_t pte)
 {
-	(pte).pte_low &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE);
-	(pte).pte_high &= ~_PAGE_SILENT_WRITE;
+	pte.pte_low  &= ~(_PAGE_MODIFIED | _PAGE_SILENT_WRITE);
+	pte.pte_high &= ~_PAGE_SILENT_WRITE;
 	return pte;
 }
 
 static inline pte_t pte_mkold(pte_t pte)
 {
-	(pte).pte_low &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ);
-	(pte).pte_high &= ~_PAGE_SILENT_READ;
+	pte.pte_low  &= ~(_PAGE_ACCESSED | _PAGE_SILENT_READ);
+	pte.pte_high &= ~_PAGE_SILENT_READ;
 	return pte;
 }
 
 static inline pte_t pte_mkwrite(pte_t pte)
 {
-	(pte).pte_low |= _PAGE_WRITE;
-	if ((pte).pte_low & _PAGE_MODIFIED) {
-		(pte).pte_low |= _PAGE_SILENT_WRITE;
-		(pte).pte_high |= _PAGE_SILENT_WRITE;
+	pte.pte_low |= _PAGE_WRITE;
+	if (pte.pte_low & _PAGE_MODIFIED) {
+		pte.pte_low  |= _PAGE_SILENT_WRITE;
+		pte.pte_high |= _PAGE_SILENT_WRITE;
 	}
 	return pte;
 }
 
 static inline pte_t pte_mkread(pte_t pte)
 {
-	(pte).pte_low |= _PAGE_READ;
-	if ((pte).pte_low & _PAGE_ACCESSED) {
-		(pte).pte_low |= _PAGE_SILENT_READ;
-		(pte).pte_high |= _PAGE_SILENT_READ;
+	pte.pte_low |= _PAGE_READ;
+	if (pte.pte_low & _PAGE_ACCESSED) {
+		pte.pte_low  |= _PAGE_SILENT_READ;
+		pte.pte_high |= _PAGE_SILENT_READ;
 	}
 	return pte;
 }
 
 static inline pte_t pte_mkdirty(pte_t pte)
 {
-	(pte).pte_low |= _PAGE_MODIFIED;
-	if ((pte).pte_low & _PAGE_WRITE) {
-		(pte).pte_low |= _PAGE_SILENT_WRITE;
-		(pte).pte_high |= _PAGE_SILENT_WRITE;
+	pte.pte_low |= _PAGE_MODIFIED;
+	if (pte.pte_low & _PAGE_WRITE) {
+		pte.pte_low  |= _PAGE_SILENT_WRITE;
+		pte.pte_high |= _PAGE_SILENT_WRITE;
 	}
 	return pte;
 }
 
 static inline pte_t pte_mkyoung(pte_t pte)
 {
-	(pte).pte_low |= _PAGE_ACCESSED;
-	if ((pte).pte_low & _PAGE_READ)
-		(pte).pte_low |= _PAGE_SILENT_READ;
-		(pte).pte_high |= _PAGE_SILENT_READ;
+	pte.pte_low |= _PAGE_ACCESSED;
+	if (pte.pte_low & _PAGE_READ)
+		pte.pte_low  |= _PAGE_SILENT_READ;
+		pte.pte_high |= _PAGE_SILENT_READ;
 	return pte;
 }
 #else

include/asm-mips/sigcontext.h

@@ -55,8 +55,14 @@ struct sigcontext {
 struct sigcontext {
 	unsigned long	sc_regs[32];
 	unsigned long	sc_fpregs[32];
-	unsigned long	sc_hi[4];
-	unsigned long	sc_lo[4];
+	unsigned long	sc_mdhi;
+	unsigned long	sc_hi1;
+	unsigned long	sc_hi2;
+	unsigned long	sc_hi3;
+	unsigned long	sc_mdlo;
+	unsigned long	sc_lo1;
+	unsigned long	sc_lo2;
+	unsigned long	sc_lo3;
 	unsigned long	sc_pc;
 	unsigned int	sc_fpc_csr;
 	unsigned int	sc_used_math;