Merge branch 'master' of /usr/src/ntfs-2.6/

Documentation/keys-request-key.txt

+			      ===================
+			      KEY REQUEST SERVICE
+			      ===================
+
+The key request service is part of the key retention service (refer to
+Documentation/keys.txt). This document explains more fully how that the
+requesting algorithm works.
+
+The process starts by either the kernel requesting a service by calling
+request_key():
+
+	struct key *request_key(const struct key_type *type,
+				const char *description,
+				const char *callout_string);
+
+Or by userspace invoking the request_key system call:
+
+	key_serial_t request_key(const char *type,
+				 const char *description,
+				 const char *callout_info,
+				 key_serial_t dest_keyring);
+
+The main difference between the two access points is that the in-kernel
+interface does not need to link the key to a keyring to prevent it from being
+immediately destroyed. The kernel interface returns a pointer directly to the
+key, and it's up to the caller to destroy the key.
+
+The userspace interface links the key to a keyring associated with the process
+to prevent the key from going away, and returns the serial number of the key to
+the caller.
+
+
+===========
+THE PROCESS
+===========
+
+A request proceeds in the following manner:
+
+ (1) Process A calls request_key() [the userspace syscall calls the kernel
+     interface].
+
+ (2) request_key() searches the process's subscribed keyrings to see if there's
+     a suitable key there. If there is, it returns the key. If there isn't, and
+     callout_info is not set, an error is returned. Otherwise the process
+     proceeds to the next step.
+
+ (3) request_key() sees that A doesn't have the desired key yet, so it creates
+     two things:
+
+     (a) An uninstantiated key U of requested type and description.
+
+     (b) An authorisation key V that refers to key U and notes that process A
+     	 is the context in which key U should be instantiated and secured, and
+     	 from which associated key requests may be satisfied.
+
+ (4) request_key() then forks and executes /sbin/request-key with a new session
+     keyring that contains a link to auth key V.
+
+ (5) /sbin/request-key execs an appropriate program to perform the actual
+     instantiation.
+
+ (6) The program may want to access another key from A's context (say a
+     Kerberos TGT key). It just requests the appropriate key, and the keyring
+     search notes that the session keyring has auth key V in its bottom level.
+
+     This will permit it to then search the keyrings of process A with the
+     UID, GID, groups and security info of process A as if it was process A,
+     and come up with key W.
+
+ (7) The program then does what it must to get the data with which to
+     instantiate key U, using key W as a reference (perhaps it contacts a
+     Kerberos server using the TGT) and then instantiates key U.
+
+ (8) Upon instantiating key U, auth key V is automatically revoked so that it
+     may not be used again.
+
+ (9) The program then exits 0 and request_key() deletes key V and returns key
+     U to the caller.
+
+This also extends further. If key W (step 5 above) didn't exist, key W would be
+created uninstantiated, another auth key (X) would be created [as per step 3]
+and another copy of /sbin/request-key spawned [as per step 4]; but the context
+specified by auth key X will still be process A, as it was in auth key V.
+
+This is because process A's keyrings can't simply be attached to
+/sbin/request-key at the appropriate places because (a) execve will discard two
+of them, and (b) it requires the same UID/GID/Groups all the way through.
+
+
+======================
+NEGATIVE INSTANTIATION
+======================
+
+Rather than instantiating a key, it is possible for the possessor of an
+authorisation key to negatively instantiate a key that's under construction.
+This is a short duration placeholder that causes any attempt at re-requesting
+the key whilst it exists to fail with error ENOKEY.
+
+This is provided to prevent excessive repeated spawning of /sbin/request-key
+processes for a key that will never be obtainable.
+
+Should the /sbin/request-key process exit anything other than 0 or die on a
+signal, the key under construction will be automatically negatively
+instantiated for a short amount of time.
+
+
+====================
+THE SEARCH ALGORITHM
+====================
+
+A search of any particular keyring proceeds in the following fashion:
+
+ (1) When the key management code searches for a key (keyring_search_aux) it
+     firstly calls key_permission(SEARCH) on the keyring it's starting with,
+     if this denies permission, it doesn't search further.
+
+ (2) It considers all the non-keyring keys within that keyring and, if any key
+     matches the criteria specified, calls key_permission(SEARCH) on it to see
+     if the key is allowed to be found. If it is, that key is returned; if
+     not, the search continues, and the error code is retained if of higher
+     priority than the one currently set.
+
+ (3) It then considers all the keyring-type keys in the keyring it's currently
+     searching. It calls key_permission(SEARCH) on each keyring, and if this
+     grants permission, it recurses, executing steps (2) and (3) on that
+     keyring.
+
+The process stops immediately a valid key is found with permission granted to
+use it. Any error from a previous match attempt is discarded and the key is
+returned.
+
+When search_process_keyrings() is invoked, it performs the following searches
+until one succeeds:
+
+ (1) If extant, the process's thread keyring is searched.
+
+ (2) If extant, the process's process keyring is searched.
+
+ (3) The process's session keyring is searched.
+
+ (4) If the process has a request_key() authorisation key in its session
+     keyring then:
+
+     (a) If extant, the calling process's thread keyring is searched.
+
+     (b) If extant, the calling process's process keyring is searched.
+
+     (c) The calling process's session keyring is searched.
+
+The moment one succeeds, all pending errors are discarded and the found key is
+returned.
+
+Only if all these fail does the whole thing fail with the highest priority
+error. Note that several errors may have come from LSM.
+
+The error priority is:
+
+	EKEYREVOKED > EKEYEXPIRED > ENOKEY
+
+EACCES/EPERM are only returned on a direct search of a specific keyring where
+the basal keyring does not grant Search permission.

Documentation/keys.txt

@@ -361,6 +361,8 @@ The main syscalls are:
      /sbin/request-key will be invoked in an attempt to obtain a key. The
      callout_info string will be passed as an argument to the program.
 
+     See also Documentation/keys-request-key.txt.
+
 
 The keyctl syscall functions are:
 
@@ -533,8 +535,8 @@ The keyctl syscall functions are:
 
  (*) Read the payload data from a key:
 
-	key_serial_t keyctl(KEYCTL_READ, key_serial_t keyring, char *buffer,
-			    size_t buflen);
+	long keyctl(KEYCTL_READ, key_serial_t keyring, char *buffer,
+		    size_t buflen);
 
      This function attempts to read the payload data from the specified key
      into the buffer. The process must have read permission on the key to
@@ -555,9 +557,9 @@ The keyctl syscall functions are:
 
  (*) Instantiate a partially constructed key.
 
-	key_serial_t keyctl(KEYCTL_INSTANTIATE, key_serial_t key,
-			    const void *payload, size_t plen,
-			    key_serial_t keyring);
+	long keyctl(KEYCTL_INSTANTIATE, key_serial_t key,
+		    const void *payload, size_t plen,
+		    key_serial_t keyring);
 
      If the kernel calls back to userspace to complete the instantiation of a
      key, userspace should use this call to supply data for the key before the
@@ -576,8 +578,8 @@ The keyctl syscall functions are:
 
  (*) Negatively instantiate a partially constructed key.
 
-	key_serial_t keyctl(KEYCTL_NEGATE, key_serial_t key,
-			    unsigned timeout, key_serial_t keyring);
+	long keyctl(KEYCTL_NEGATE, key_serial_t key,
+		    unsigned timeout, key_serial_t keyring);
 
      If the kernel calls back to userspace to complete the instantiation of a
      key, userspace should use this call mark the key as negative before the
@@ -688,6 +690,8 @@ payload contents" for more information.
     If successful, the key will have been attached to the default keyring for
     implicitly obtained request-key keys, as set by KEYCTL_SET_REQKEY_KEYRING.
 
+    See also Documentation/keys-request-key.txt.
+
 
 (*) When it is no longer required, the key should be released using:
 

Makefile

 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 14
-EXTRAVERSION =-rc3
+EXTRAVERSION =-rc4
 NAME=Affluent Albatross
 
 # *DOCUMENTATION*

arch/arm/common/scoop.c

@@ -26,6 +26,8 @@ struct scoop_pcmcia_dev *scoop_devs;
 struct  scoop_dev {
 	void  *base;
 	spinlock_t scoop_lock;
+	unsigned short suspend_clr;
+	unsigned short suspend_set;
 	u32 scoop_gpwr;
 };
 
@@ -90,14 +92,24 @@ EXPORT_SYMBOL(reset_scoop);
 EXPORT_SYMBOL(read_scoop_reg);
 EXPORT_SYMBOL(write_scoop_reg);
 
+static void check_scoop_reg(struct scoop_dev *sdev)
+{
+	unsigned short mcr;
+
+	mcr = SCOOP_REG(sdev->base, SCOOP_MCR);
+	if ((mcr & 0x100) == 0)
+		SCOOP_REG(sdev->base, SCOOP_MCR) = 0x0101;
+}
+
 #ifdef CONFIG_PM
 static int scoop_suspend(struct device *dev, pm_message_t state, uint32_t level)
 {
 	if (level == SUSPEND_POWER_DOWN) {
 		struct scoop_dev *sdev = dev_get_drvdata(dev);
 
-		sdev->scoop_gpwr = SCOOP_REG(sdev->base,SCOOP_GPWR);
-		SCOOP_REG(sdev->base,SCOOP_GPWR) = 0;
+		check_scoop_reg(sdev);
+  		sdev->scoop_gpwr = SCOOP_REG(sdev->base, SCOOP_GPWR);
+		SCOOP_REG(sdev->base, SCOOP_GPWR) = (sdev->scoop_gpwr & ~sdev->suspend_clr) | sdev->suspend_set;
 	}
 	return 0;
 }
@@ -107,6 +119,7 @@ static int scoop_resume(struct device *dev, uint32_t level)
 	if (level == RESUME_POWER_ON) {
 		struct scoop_dev *sdev = dev_get_drvdata(dev);
 
+		check_scoop_reg(sdev);
 		SCOOP_REG(sdev->base,SCOOP_GPWR) = sdev->scoop_gpwr;
 	}
 	return 0;
@@ -151,6 +164,9 @@ int __init scoop_probe(struct device *dev)
 	SCOOP_REG(devptr->base, SCOOP_GPCR) = inf->io_dir & 0xffff;
 	SCOOP_REG(devptr->base, SCOOP_GPWR) = inf->io_out & 0xffff;
 
+	devptr->suspend_clr = inf->suspend_clr;
+	devptr->suspend_set = inf->suspend_set;
+
 	return 0;
 }
 

arch/arm/kernel/sys_arm.c

@@ -305,7 +305,7 @@ long execve(const char *filename, char **argv, char **envp)
 		  "Ir" (THREAD_START_SP - sizeof(regs)),
 		  "r" (&regs),
 		  "Ir" (sizeof(regs))
-		: "r0", "r1", "r2", "r3", "ip", "memory");
+		: "r0", "r1", "r2", "r3", "ip", "lr", "memory");
 
  out:
 	return ret;

arch/arm/kernel/traps.c

@@ -504,7 +504,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
 
 		bad_access:
 		spin_unlock(&mm->page_table_lock);
-		/* simulate a read access fault */
+		/* simulate a write access fault */
 		do_DataAbort(addr, 15 + (1 << 11), regs);
 		return -1;
 	}

arch/arm/mach-imx/generic.c

@@ -28,14 +28,15 @@
 #include <linux/module.h>
 #include <asm/arch/imxfb.h>
 #include <asm/hardware.h>
+#include <asm/arch/imx-regs.h>
 
 #include <asm/mach/map.h>
 
 void imx_gpio_mode(int gpio_mode)
 {
 	unsigned int pin = gpio_mode & GPIO_PIN_MASK;
-	unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> 5;
-	unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> 10;
+	unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT;
+	unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> GPIO_OCR_SHIFT;
 	unsigned int tmp;
 
 	/* Pullup enable */
@@ -57,7 +58,7 @@ void imx_gpio_mode(int gpio_mode)
 		GPR(port) &= ~(1<<pin);
 
 	/* use as gpio? */
-	if( ocr == 3 )
+	if(gpio_mode &  GPIO_GIUS)
 		GIUS(port) |= (1<<pin);
 	else
 		GIUS(port) &= ~(1<<pin);
@@ -72,20 +73,20 @@ void imx_gpio_mode(int gpio_mode)
 		tmp |= (ocr << (pin*2));
 		OCR1(port) = tmp;
 
-		if( gpio_mode &	GPIO_AOUT )
-			ICONFA1(port) &= ~( 3<<(pin*2));
-		if( gpio_mode &	GPIO_BOUT )
-			ICONFB1(port) &= ~( 3<<(pin*2));
+		ICONFA1(port) &= ~( 3<<(pin*2));
+		ICONFA1(port) |= ((gpio_mode >> GPIO_AOUT_SHIFT) & 3) << (pin * 2);
+		ICONFB1(port) &= ~( 3<<(pin*2));
+		ICONFB1(port) |= ((gpio_mode >> GPIO_BOUT_SHIFT) & 3) << (pin * 2);
 	} else {
 		tmp = OCR2(port);
 		tmp &= ~( 3<<((pin-16)*2));
 		tmp |= (ocr << ((pin-16)*2));
 		OCR2(port) = tmp;
 
-		if( gpio_mode &	GPIO_AOUT )
-			ICONFA2(port) &= ~( 3<<((pin-16)*2));
-		if( gpio_mode &	GPIO_BOUT )
-			ICONFB2(port) &= ~( 3<<((pin-16)*2));
+		ICONFA2(port) &= ~( 3<<((pin-16)*2));
+		ICONFA2(port) |= ((gpio_mode >> GPIO_AOUT_SHIFT) & 3) << ((pin-16) * 2);
+		ICONFB2(port) &= ~( 3<<((pin-16)*2));
+		ICONFB2(port) |= ((gpio_mode >> GPIO_BOUT_SHIFT) & 3) << ((pin-16) * 2);
 	}
 }
 

arch/arm/mach-imx/mx1ads.c

@@ -55,7 +55,7 @@ static void __init
 mx1ads_init(void)
 {
 #ifdef CONFIG_LEDS
-	imx_gpio_mode(GPIO_PORTA | GPIO_OUT | GPIO_GPIO | 2);
+	imx_gpio_mode(GPIO_PORTA | GPIO_OUT | 2);
 #endif
 	platform_add_devices(devices, ARRAY_SIZE(devices));
 }

arch/arm/mach-pxa/corgi.c

@@ -36,6 +36,7 @@
 #include <asm/arch/mmc.h>
 #include <asm/arch/udc.h>
 #include <asm/arch/corgi.h>
+#include <asm/arch/sharpsl.h>
 
 #include <asm/mach/sharpsl_param.h>
 #include <asm/hardware/scoop.h>

arch/arm/mach-sa1100/collie.c

@@ -111,11 +111,11 @@ static struct mtd_partition collie_partitions[] = {
 
 static void collie_set_vpp(int vpp)
 {
-	write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(SCOOP_GPCR) | COLLIE_SCP_VPEN);
+	write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR) | COLLIE_SCP_VPEN);
 	if (vpp)
-		write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(SCOOP_GPWR) | COLLIE_SCP_VPEN);
+		write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) | COLLIE_SCP_VPEN);
 	else
-		write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
+		write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
 }
 
 static struct flash_platform_data collie_flash_data = {

arch/arm/mm/Kconfig

@@ -370,21 +370,21 @@ config CPU_BIG_ENDIAN
 
 config CPU_ICACHE_DISABLE
 	bool "Disable I-Cache"
-	depends on CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM1020
+	depends on CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM1020 || CPU_V6
 	help
 	  Say Y here to disable the processor instruction cache. Unless
 	  you have a reason not to or are unsure, say N.
 
 config CPU_DCACHE_DISABLE
 	bool "Disable D-Cache"
-	depends on CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM1020
+	depends on CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM1020 || CPU_V6
 	help
 	  Say Y here to disable the processor data cache. Unless
 	  you have a reason not to or are unsure, say N.
 
 config CPU_DCACHE_WRITETHROUGH
 	bool "Force write through D-cache"
-	depends on (CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM1020) && !CPU_DCACHE_DISABLE
+	depends on (CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM1020 || CPU_V6) && !CPU_DCACHE_DISABLE
 	default y if CPU_ARM925T
 	help
 	  Say Y here to use the data cache in writethrough mode. Unless you
@@ -399,7 +399,7 @@ config CPU_CACHE_ROUND_ROBIN
 
 config CPU_BPREDICT_DISABLE
 	bool "Disable branch prediction"
-	depends on CPU_ARM1020
+	depends on CPU_ARM1020 || CPU_V6
 	help
 	  Say Y here to disable branch prediction.  If unsure, say N.
 

arch/arm/mm/alignment.c

@@ -330,6 +330,9 @@ do_alignment_ldrdstrd(unsigned long addr, unsigned long instr,
 {
 	unsigned int rd = RD_BITS(instr);
 
+	if (((rd & 1) == 1) || (rd == 14))
+		goto bad;
+
 	ai_dword += 1;
 
 	if (user_mode(regs))
@@ -361,7 +364,8 @@ do_alignment_ldrdstrd(unsigned long addr, unsigned long instr,
 	}
 
 	return TYPE_LDST;
-
+ bad:
+	return TYPE_ERROR;
  fault:
 	return TYPE_FAULT;
 }
@@ -663,6 +667,8 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 		else if ((instr & 0x001000f0) == 0x000000d0 || /* LDRD */
 			 (instr & 0x001000f0) == 0x000000f0)   /* STRD */
 			handler = do_alignment_ldrdstrd;
+		else if ((instr & 0x01f00ff0) == 0x01000090) /* SWP */
+			goto swp;
 		else
 			goto bad;
 		break;
@@ -733,6 +739,9 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 	do_bad_area(current, current->mm, addr, fsr, regs);
 	return 0;
 
+ swp:
+	printk(KERN_ERR "Alignment trap: not handling swp instruction\n");
+
  bad:
 	/*
 	 * Oops, we didn't handle the instruction.

arch/arm/tools/mach-types

@@ -2,11 +2,17 @@
 #
 # This file is linux/arch/arm/tools/mach-types
 #
+# Up to date versions of this file can be obtained from:
+#
+#   http://www.arm.linux.org.uk/developer/machines/?action=download
+#
 # Please do not send patches to this file; it is automatically generated!
 # To add an entry into this database, please see Documentation/arm/README,
-# or contact rmk@arm.linux.org.uk
+# or visit:
+#
+#   http://www.arm.linux.org.uk/developer/machines/?action=new
 #
-# Last update: Thu Jun 23 20:19:33 2005
+# Last update: Mon Oct 10 09:46:25 2005
 #
 # machine_is_xxx	CONFIG_xxxx		MACH_TYPE_xxx		number
 #
@@ -421,7 +427,7 @@ mt02			MACH_MT02		MT02			410
 mport3s			MACH_MPORT3S		MPORT3S			411
 ra_alpha		MACH_RA_ALPHA		RA_ALPHA		412
 xcep			MACH_XCEP		XCEP			413
-arcom_mercury		MACH_ARCOM_MERCURY	ARCOM_MERCURY		414
+arcom_vulcan		MACH_ARCOM_VULCAN	ARCOM_VULCAN		414
 stargate		MACH_STARGATE		STARGATE		415
 armadilloj		MACH_ARMADILLOJ		ARMADILLOJ		416
 elroy_jack		MACH_ELROY_JACK		ELROY_JACK		417
@@ -454,7 +460,7 @@ esl_sarva		MACH_ESL_SARVA		ESL_SARVA		443
 xm250			MACH_XM250		XM250			444
 t6tc1xb			MACH_T6TC1XB		T6TC1XB			445
 ess710			MACH_ESS710		ESS710			446
-mx3ads			MACH_MX3ADS		MX3ADS			447
+mx31ads			MACH_MX3ADS		MX3ADS			447
 himalaya		MACH_HIMALAYA		HIMALAYA		448
 bolfenk			MACH_BOLFENK		BOLFENK			449
 at91rm9200kr		MACH_AT91RM9200KR	AT91RM9200KR		450
@@ -787,3 +793,79 @@ ez_ixp42x		MACH_EZ_IXP42X		EZ_IXP42X		778
 tapwave_zodiac		MACH_TAPWAVE_ZODIAC	TAPWAVE_ZODIAC		779
 universalmeter		MACH_UNIVERSALMETER	UNIVERSALMETER		780
 hicoarm9		MACH_HICOARM9		HICOARM9		781
+pnx4008			MACH_PNX4008		PNX4008			782
+kws6000			MACH_KWS6000		KWS6000			783
+portux920t		MACH_PORTUX920T		PORTUX920T		784
+ez_x5			MACH_EZ_X5		EZ_X5			785
+omap_rudolph		MACH_OMAP_RUDOLPH	OMAP_RUDOLPH		786
+cpuat91			MACH_CPUAT91		CPUAT91			787
+rea9200			MACH_REA9200		REA9200			788
+acts_pune_sa1110	MACH_ACTS_PUNE_SA1110	ACTS_PUNE_SA1110	789
+ixp425			MACH_IXP425		IXP425			790
+argonplusodyssey	MACH_ODYSSEY		ODYSSEY			791
+perch			MACH_PERCH		PERCH			792
+eis05r1			MACH_EIS05R1		EIS05R1			793
+pepperpad		MACH_PEPPERPAD		PEPPERPAD		794
+sb3010			MACH_SB3010		SB3010			795
+rm9200			MACH_RM9200		RM9200			796
+dma03			MACH_DMA03		DMA03			797
+road_s101		MACH_ROAD_S101		ROAD_S101		798
+iq_nextgen_a		MACH_IQ_NEXTGEN_A	IQ_NEXTGEN_A		799
+iq_nextgen_b		MACH_IQ_NEXTGEN_B	IQ_NEXTGEN_B		800
+iq_nextgen_c		MACH_IQ_NEXTGEN_C	IQ_NEXTGEN_C		801
+iq_nextgen_d		MACH_IQ_NEXTGEN_D	IQ_NEXTGEN_D		802
+iq_nextgen_e		MACH_IQ_NEXTGEN_E	IQ_NEXTGEN_E		803
+mallow_at91		MACH_MALLOW_AT91	MALLOW_AT91		804
+cybertracker		MACH_CYBERTRACKER	CYBERTRACKER		805
+gesbc931x		MACH_GESBC931X		GESBC931X		806
+centipad		MACH_CENTIPAD		CENTIPAD		807
+armsoc			MACH_ARMSOC		ARMSOC			808
+se4200			MACH_SE4200		SE4200			809
+ems197a			MACH_EMS197A		EMS197A			810
+micro9			MACH_MICRO9		MICRO9			811
+micro9l			MACH_MICRO9L		MICRO9L			812
+uc5471dsp		MACH_UC5471DSP		UC5471DSP		813
+sj5471eng		MACH_SJ5471ENG		SJ5471ENG		814
+none			MACH_CMPXA26X		CMPXA26X		815
+nc			MACH_NC			NC			816
+omap_palmte		MACH_OMAP_PALMTE	OMAP_PALMTE		817
+ajax52x			MACH_AJAX52X		AJAX52X			818
+siriustar		MACH_SIRIUSTAR		SIRIUSTAR		819
+iodata_hdlg		MACH_IODATA_HDLG	IODATA_HDLG		820
+at91rm9200utl		MACH_AT91RM9200UTL	AT91RM9200UTL		821
+biosafe			MACH_BIOSAFE		BIOSAFE			822
+mp1000			MACH_MP1000		MP1000			823
+parsy			MACH_PARSY		PARSY			824
+ccxp270			MACH_CCXP		CCXP			825
+omap_gsample		MACH_OMAP_GSAMPLE	OMAP_GSAMPLE		826
+realview_eb		MACH_REALVIEW_EB	REALVIEW_EB		827
+samoa			MACH_SAMOA		SAMOA			828
+t3xscale		MACH_T3XSCALE		T3XSCALE		829
+i878			MACH_I878		I878			830
+borzoi			MACH_BORZOI		BORZOI			831
+gecko			MACH_GECKO		GECKO			832
+ds101			MACH_DS101		DS101			833
+omap_palmtt2		MACH_OMAP_PALMTT2	OMAP_PALMTT2		834
+xscale_palmld		MACH_XSCALE_PALMLD	XSCALE_PALMLD		835
+cc9c			MACH_CC9C		CC9C			836
+sbc1670			MACH_SBC1670		SBC1670			837
+ixdp28x5		MACH_IXDP28X5		IXDP28X5		838
+omap_palmtt		MACH_OMAP_PALMTT	OMAP_PALMTT		839
+ml696k			MACH_ML696K		ML696K			840
+arcom_zeus		MACH_ARCOM_ZEUS		ARCOM_ZEUS		841
+osiris			MACH_OSIRIS		OSIRIS			842
+maestro			MACH_MAESTRO		MAESTRO			843
+tunge2			MACH_TUNGE2		TUNGE2			844
+ixbbm			MACH_IXBBM		IXBBM			845
+mx27			MACH_MX27		MX27			846
+ax8004			MACH_AX8004		AX8004			847
+at91sam9261ek		MACH_AT91SAM9261EK	AT91SAM9261EK		848
+loft			MACH_LOFT		LOFT			849
+magpie			MACH_MAGPIE		MAGPIE			850
+mx21			MACH_MX21		MX21			851
+mb87m3400		MACH_MB87M3400		MB87M3400		852
+mguard_delta		MACH_MGUARD_DELTA	MGUARD_DELTA		853
+davinci_dvdp		MACH_DAVINCI_DVDP	DAVINCI_DVDP		854
+htcuniversal		MACH_HTCUNIVERSAL	HTCUNIVERSAL		855
+tpad			MACH_TPAD		TPAD			856
+roverp3			MACH_ROVERP3		ROVERP3			857

arch/cris/arch-v32/drivers/pci/dma.c

@@ -24,7 +24,7 @@ struct dma_coherent_mem {
 };
 
 void *dma_alloc_coherent(struct device *dev, size_t size,
-			   dma_addr_t *dma_handle, unsigned int __nocast gfp)
+			   dma_addr_t *dma_handle, gfp_t gfp)
 {
 	void *ret;
 	struct dma_coherent_mem *mem = dev ? dev->dma_mem : NULL;

arch/i386/kernel/cpu/amd.c

@@ -29,7 +29,7 @@ static void __init init_amd(struct cpuinfo_x86 *c)
 	int r;
 
 #ifdef CONFIG_SMP
-	unsigned long value;
+	unsigned long long value;
 
 	/* Disable TLB flush filter by setting HWCR.FFDIS on K8
 	 * bit 6 of msr C001_0015

arch/i386/kernel/pci-dma.c

@@ -23,7 +23,7 @@ struct dma_coherent_mem {
 };
 
 void *dma_alloc_coherent(struct device *dev, size_t size,
-			   dma_addr_t *dma_handle, unsigned int __nocast gfp)
+			   dma_addr_t *dma_handle, gfp_t gfp)
 {
 	void *ret;
 	struct dma_coherent_mem *mem = dev ? dev->dma_mem : NULL;

arch/i386/kernel/signal.c

@@ -338,7 +338,11 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
 		esp = (unsigned long) ka->sa.sa_restorer;
 	}
 
-	return (void __user *)((esp - frame_size) & -8ul);
+	esp -= frame_size;
+	/* Align the stack pointer according to the i386 ABI,
+	 * i.e. so that on function entry ((sp + 4) & 15) == 0. */
+	esp = ((esp + 4) & -16ul) - 4;
+	return (void __user *) esp;
 }
 
 /* These symbols are defined with the addresses in the vsyscall page.

arch/ia64/kernel/mca.c

@@ -1016,6 +1016,11 @@ ia64_mca_cmc_int_handler(int cmc_irq, void *arg, struct pt_regs *ptregs)
 
 			cmc_polling_enabled = 1;
 			spin_unlock(&cmc_history_lock);
+			/* If we're being hit with CMC interrupts, we won't
+			 * ever execute the schedule_work() below.  Need to
+			 * disable CMC interrupts on this processor now.
+			 */
+			ia64_mca_cmc_vector_disable(NULL);
 			schedule_work(&cmc_disable_work);
 
 			/*

arch/ppc/platforms/pmac_time.c

@@ -195,7 +195,7 @@ via_calibrate_decr(void)
 		;
 	dend = get_dec();
 
-	tb_ticks_per_jiffy = (dstart - dend) / (6 * (HZ/100));
+	tb_ticks_per_jiffy = (dstart - dend) / ((6 * HZ)/100);
 	tb_to_us = mulhwu_scale_factor(dstart - dend, 60000);
 
 	printk(KERN_INFO "via_calibrate_decr: ticks per jiffy = %u (%u ticks)\n",

arch/ppc64/kernel/bpa_iommu.c

@@ -310,7 +310,7 @@ static void bpa_map_iommu(void)
 
 
 static void *bpa_alloc_coherent(struct device *hwdev, size_t size,
-			   dma_addr_t *dma_handle, unsigned int __nocast flag)
+			   dma_addr_t *dma_handle, gfp_t flag)
 {
 	void *ret;
 

arch/ppc64/kernel/dma.c

@@ -53,7 +53,7 @@ int dma_set_mask(struct device *dev, u64 dma_mask)
 EXPORT_SYMBOL(dma_set_mask);
 
 void *dma_alloc_coherent(struct device *dev, size_t size,
-		dma_addr_t *dma_handle, unsigned int __nocast flag)
+		dma_addr_t *dma_handle, gfp_t flag)
 {
 	struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
 

arch/ppc64/kernel/iommu.c

@@ -519,7 +519,7 @@ void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
  * to the dma address (mapping) of the first page.
  */
 void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size,
-		dma_addr_t *dma_handle, unsigned int __nocast flag)
+		dma_addr_t *dma_handle, gfp_t flag)
 {
 	void *ret = NULL;
 	dma_addr_t mapping;

arch/ppc64/kernel/pci_direct_iommu.c

@@ -31,7 +31,7 @@
 #include "pci.h"
 
 static void *pci_direct_alloc_coherent(struct device *hwdev, size_t size,
-				   dma_addr_t *dma_handle, unsigned int __nocast flag)
+				   dma_addr_t *dma_handle, gfp_t flag)
 {
 	void *ret;
 

arch/ppc64/kernel/pci_iommu.c

@@ -76,7 +76,7 @@ static inline struct iommu_table *devnode_table(struct device *dev)
  * to the dma address (mapping) of the first page.
  */
 static void *pci_iommu_alloc_coherent(struct device *hwdev, size_t size,
-			   dma_addr_t *dma_handle, unsigned int __nocast flag)
+			   dma_addr_t *dma_handle, gfp_t flag)
 {
 	return iommu_alloc_coherent(devnode_table(hwdev), size, dma_handle,
 			flag);

arch/ppc64/kernel/vio.c

@@ -218,7 +218,7 @@ static void vio_unmap_sg(struct device *dev, struct scatterlist *sglist,
 }
 
 static void *vio_alloc_coherent(struct device *dev, size_t size,
-			   dma_addr_t *dma_handle, unsigned int __nocast flag)
+			   dma_addr_t *dma_handle, gfp_t flag)
 {
 	return iommu_alloc_coherent(to_vio_dev(dev)->iommu_table, size,
 			dma_handle, flag);

arch/sparc/Kconfig

@@ -21,66 +21,14 @@ config GENERIC_ISA_DMA
 	bool
 	default y
 
+config GENERIC_IOMAP
+	bool
+	default y
+
 source "init/Kconfig"
 
 menu "General machine setup"
 
-config VT
-	bool
-	select INPUT
-	default y
-	---help---
-	  If you say Y here, you will get support for terminal devices with
-	  display and keyboard devices. These are called "virtual" because you
-	  can run several virtual terminals (also called virtual consoles) on
-	  one physical terminal. This is rather useful, for example one
-	  virtual terminal can collect system messages and warnings, another
-	  one can be used for a text-mode user session, and a third could run
-	  an X session, all in parallel. Switching between virtual terminals
-	  is done with certain key combinations, usually Alt-<function key>.
-
-	  The setterm command ("man setterm") can be used to change the
-	  properties (such as colors or beeping) of a virtual terminal. The
-	  man page console_codes(4) ("man console_codes") contains the special
-	  character sequences that can be used to change those properties
-	  directly. The fonts used on virtual terminals can be changed with
-	  the setfont ("man setfont") command and the key bindings are defined
-	  with the loadkeys ("man loadkeys") command.
-
-	  You need at least one virtual terminal device in order to make use
-	  of your keyboard and monitor. Therefore, only people configuring an
-	  embedded system would want to say N here in order to save some
-	  memory; the only way to log into such a system is then via a serial
-	  or network connection.
-
-	  If unsure, say Y, or else you won't be able to do much with your new
-	  shiny Linux system :-)
-
-config VT_CONSOLE
-	bool
-	default y
-	---help---
-	  The system console is the device which receives all kernel messages
-	  and warnings and which allows logins in single user mode. If you
-	  answer Y here, a virtual terminal (the device used to interact with
-	  a physical terminal) can be used as system console. This is the most
-	  common mode of operations, so you should say Y here unless you want
-	  the kernel messages be output only to a serial port (in which case
-	  you should say Y to "Console on serial port", below).
-
-	  If you do say Y here, by default the currently visible virtual
-	  terminal (/dev/tty0) will be used as system console. You can change
-	  that with a kernel command line option such as "console=tty3" which
-	  would use the third virtual terminal as system console. (Try "man
-	  bootparam" or see the documentation of your boot loader (lilo or
-	  loadlin) about how to pass options to the kernel at boot time.)
-
-	  If unsure, say Y.
-
-config HW_CONSOLE
-	bool
-	default y
-
 config SMP
 	bool "Symmetric multi-processing support (does not work on sun4/sun4c)"
 	depends on BROKEN

arch/sparc/defconfig

@@ -5,6 +5,7 @@ CONFIG_MMU=y
 CONFIG_UID16=y
 CONFIG_HIGHMEM=y
 CONFIG_GENERIC_ISA_DMA=y
+CONFIG_GENERIC_IOMAP=y
 
 #
 # Code maturity level options

arch/sparc/kernel/time.c

@@ -457,7 +457,7 @@ void __init time_init(void)
 	sbus_time_init();
 }
 
-extern __inline__ unsigned long do_gettimeoffset(void)
+static inline unsigned long do_gettimeoffset(void)
 {
 	return (*master_l10_counter >> 10) & 0x1fffff;
 }

arch/sparc/mm/srmmu.c

@@ -260,7 +260,7 @@ static inline pte_t srmmu_pte_modify(pte_t pte, pgprot_t newprot)
 { return __pte((pte_val(pte) & SRMMU_CHG_MASK) | pgprot_val(newprot)); }
 
 /* to find an entry in a top-level page table... */
-extern inline pgd_t *srmmu_pgd_offset(struct mm_struct * mm, unsigned long address)
+static inline pgd_t *srmmu_pgd_offset(struct mm_struct * mm, unsigned long address)
 { return mm->pgd + (address >> SRMMU_PGDIR_SHIFT); }
 
 /* Find an entry in the second-level page table.. */

arch/sparc64/kernel/entry.S

@@ -33,7 +33,7 @@
 	/* This is trivial with the new code... */
 	.globl		do_fpdis
 do_fpdis:
-	sethi		%hi(TSTATE_PEF), %g4					! IEU0
+	sethi		%hi(TSTATE_PEF), %g4
 	rdpr		%tstate, %g5
 	andcc		%g5, %g4, %g0
 	be,pt		%xcc, 1f
@@ -50,18 +50,18 @@ do_fpdis:
 	add		%g0, %g0, %g0
 	ba,a,pt		%xcc, rtrap_clr_l6
 
-1:	ldub		[%g6 + TI_FPSAVED], %g5					! Load	Group
-	wr		%g0, FPRS_FEF, %fprs					! LSU	Group+4bubbles
-	andcc		%g5, FPRS_FEF, %g0					! IEU1	Group
-	be,a,pt		%icc, 1f						! CTI
-	 clr		%g7							! IEU0
-	ldx		[%g6 + TI_GSR], %g7					! Load	Group
-1:	andcc		%g5, FPRS_DL, %g0					! IEU1
-	bne,pn		%icc, 2f						! CTI
-	 fzero		%f0							! FPA
-	andcc		%g5, FPRS_DU, %g0					! IEU1  Group
-	bne,pn		%icc, 1f						! CTI
-	 fzero		%f2							! FPA
+1:	ldub		[%g6 + TI_FPSAVED], %g5
+	wr		%g0, FPRS_FEF, %fprs
+	andcc		%g5, FPRS_FEF, %g0
+	be,a,pt		%icc, 1f
+	 clr		%g7
+	ldx		[%g6 + TI_GSR], %g7
+1:	andcc		%g5, FPRS_DL, %g0
+	bne,pn		%icc, 2f
+	 fzero		%f0
+	andcc		%g5, FPRS_DU, %g0
+	bne,pn		%icc, 1f
+	 fzero		%f2
 	faddd		%f0, %f2, %f4
 	fmuld		%f0, %f2, %f6
 	faddd		%f0, %f2, %f8
@@ -97,15 +97,17 @@ do_fpdis:
 	faddd		%f0, %f2, %f4
 	fmuld		%f0, %f2, %f6
 	ldxa		[%g3] ASI_DMMU, %g5
-cplus_fptrap_insn_1:
-	sethi		%hi(0), %g2
+	sethi		%hi(sparc64_kern_sec_context), %g2
+	ldx		[%g2 + %lo(sparc64_kern_sec_context)], %g2
 	stxa		%g2, [%g3] ASI_DMMU
 	membar		#Sync
 	add		%g6, TI_FPREGS + 0xc0, %g2
 	faddd		%f0, %f2, %f8
 	fmuld		%f0, %f2, %f10
-	ldda		[%g1] ASI_BLK_S, %f32	! grrr, where is ASI_BLK_NUCLEUS 8-(
+	membar		#Sync
+	ldda		[%g1] ASI_BLK_S, %f32
 	ldda		[%g2] ASI_BLK_S, %f48
+	membar		#Sync
 	faddd		%f0, %f2, %f12
 	fmuld		%f0, %f2, %f14
 	faddd		%f0, %f2, %f16
@@ -116,7 +118,6 @@ cplus_fptrap_insn_1:
 	fmuld		%f0, %f2, %f26
 	faddd		%f0, %f2, %f28
 	fmuld		%f0, %f2, %f30
-	membar		#Sync
 	b,pt		%xcc, fpdis_exit
 	 nop
 2:	andcc		%g5, FPRS_DU, %g0
@@ -126,15 +127,17 @@ cplus_fptrap_insn_1:
 	fzero		%f34
 	ldxa		[%g3] ASI_DMMU, %g5
 	add		%g6, TI_FPREGS, %g1
-cplus_fptrap_insn_2:
-	sethi		%hi(0), %g2
+	sethi		%hi(sparc64_kern_sec_context), %g2
+	ldx		[%g2 + %lo(sparc64_kern_sec_context)], %g2
 	stxa		%g2, [%g3] ASI_DMMU
 	membar		#Sync
 	add		%g6, TI_FPREGS + 0x40, %g2
 	faddd		%f32, %f34, %f36
 	fmuld		%f32, %f34, %f38
-	ldda		[%g1] ASI_BLK_S, %f0	! grrr, where is ASI_BLK_NUCLEUS 8-(
+	membar		#Sync
+	ldda		[%g1] ASI_BLK_S, %f0
 	ldda		[%g2] ASI_BLK_S, %f16
+	membar		#Sync
 	faddd		%f32, %f34, %f40
 	fmuld		%f32, %f34, %f42
 	faddd		%f32, %f34, %f44
@@ -147,18 +150,18 @@ cplus_fptrap_insn_2:
 	fmuld		%f32, %f34, %f58
 	faddd		%f32, %f34, %f60
 	fmuld		%f32, %f34, %f62
-	membar		#Sync
 	ba,pt		%xcc, fpdis_exit
 	 nop
 3:	mov		SECONDARY_CONTEXT, %g3
 	add		%g6, TI_FPREGS, %g1
 	ldxa		[%g3] ASI_DMMU, %g5
-cplus_fptrap_insn_3:
-	sethi		%hi(0), %g2
+	sethi		%hi(sparc64_kern_sec_context), %g2
+	ldx		[%g2 + %lo(sparc64_kern_sec_context)], %g2
 	stxa		%g2, [%g3] ASI_DMMU
 	membar		#Sync
 	mov		0x40, %g2
-	ldda		[%g1] ASI_BLK_S, %f0		! grrr, where is ASI_BLK_NUCLEUS 8-(
+	membar		#Sync
+	ldda		[%g1] ASI_BLK_S, %f0
 	ldda		[%g1 + %g2] ASI_BLK_S, %f16
 	add		%g1, 0x80, %g1
 	ldda		[%g1] ASI_BLK_S, %f32
@@ -319,8 +322,8 @@ do_fptrap_after_fsr:
 	stx		%g3, [%g6 + TI_GSR]
 	mov		SECONDARY_CONTEXT, %g3
 	ldxa		[%g3] ASI_DMMU, %g5
-cplus_fptrap_insn_4:
-	sethi		%hi(0), %g2
+	sethi		%hi(sparc64_kern_sec_context), %g2
+	ldx		[%g2 + %lo(sparc64_kern_sec_context)], %g2
 	stxa		%g2, [%g3] ASI_DMMU
 	membar		#Sync
 	add		%g6, TI_FPREGS, %g2
@@ -341,33 +344,6 @@ cplus_fptrap_insn_4:
 	ba,pt		%xcc, etrap
 	 wr		%g0, 0, %fprs
 
-cplus_fptrap_1:
-	sethi		%hi(CTX_CHEETAH_PLUS_CTX0), %g2
-
-	.globl		cheetah_plus_patch_fpdis
-cheetah_plus_patch_fpdis:
-	/* We configure the dTLB512_0 for 4MB pages and the
-	 * dTLB512_1 for 8K pages when in context zero.
-	 */
-	sethi			%hi(cplus_fptrap_1), %o0
-	lduw			[%o0 + %lo(cplus_fptrap_1)], %o1
-
-	set			cplus_fptrap_insn_1, %o2
-	stw			%o1, [%o2]
-	flush			%o2
-	set			cplus_fptrap_insn_2, %o2
-	stw			%o1, [%o2]
-	flush			%o2
-	set			cplus_fptrap_insn_3, %o2
-	stw			%o1, [%o2]
-	flush			%o2
-	set			cplus_fptrap_insn_4, %o2
-	stw			%o1, [%o2]
-	flush			%o2
-
-	retl
-	 nop
-
 	/* The registers for cross calls will be:
 	 *
 	 * DATA 0: [low 32-bits]  Address of function to call, jmp to this

arch/sparc64/kernel/etrap.S

@@ -68,12 +68,8 @@ etrap_irq:
 
 		wrpr	%g3, 0, %otherwin
 		wrpr	%g2, 0, %wstate
-cplus_etrap_insn_1:
-		sethi	%hi(0), %g3
-		sllx	%g3, 32, %g3
-cplus_etrap_insn_2:
-		sethi	%hi(0), %g2
-		or	%g3, %g2, %g3
+		sethi	%hi(sparc64_kern_pri_context), %g2
+		ldx	[%g2 + %lo(sparc64_kern_pri_context)], %g3
 		stxa	%g3, [%l4] ASI_DMMU
 		flush	%l6
 		wr	%g0, ASI_AIUS, %asi
@@ -215,12 +211,8 @@ scetrap:	rdpr	%pil, %g2
 		mov	PRIMARY_CONTEXT, %l4
 		wrpr	%g3, 0, %otherwin
 		wrpr	%g2, 0, %wstate
-cplus_etrap_insn_3:
-		sethi	%hi(0), %g3
-		sllx	%g3, 32, %g3
-cplus_etrap_insn_4:
-		sethi	%hi(0), %g2
-		or	%g3, %g2, %g3
+		sethi	%hi(sparc64_kern_pri_context), %g2
+		ldx	[%g2 + %lo(sparc64_kern_pri_context)], %g3
 		stxa	%g3, [%l4] ASI_DMMU
 		flush	%l6
 
@@ -264,38 +256,3 @@ cplus_etrap_insn_4:
 
 #undef TASK_REGOFF
 #undef ETRAP_PSTATE1
-
-cplus_einsn_1:
-		sethi			%uhi(CTX_CHEETAH_PLUS_NUC), %g3
-cplus_einsn_2:
-		sethi			%hi(CTX_CHEETAH_PLUS_CTX0), %g2
-
-		.globl			cheetah_plus_patch_etrap
-cheetah_plus_patch_etrap:
-		/* We configure the dTLB512_0 for 4MB pages and the
-		 * dTLB512_1 for 8K pages when in context zero.
-		 */
-		sethi			%hi(cplus_einsn_1), %o0
-		sethi			%hi(cplus_etrap_insn_1), %o2
-		lduw			[%o0 + %lo(cplus_einsn_1)], %o1
-		or			%o2, %lo(cplus_etrap_insn_1), %o2
-		stw			%o1, [%o2]
-		flush			%o2
-		sethi			%hi(cplus_etrap_insn_3), %o2
-		or			%o2, %lo(cplus_etrap_insn_3), %o2
-		stw			%o1, [%o2]
-		flush			%o2
-
-		sethi			%hi(cplus_einsn_2), %o0
-		sethi			%hi(cplus_etrap_insn_2), %o2
-		lduw			[%o0 + %lo(cplus_einsn_2)], %o1
-		or			%o2, %lo(cplus_etrap_insn_2), %o2
-		stw			%o1, [%o2]
-		flush			%o2
-		sethi			%hi(cplus_etrap_insn_4), %o2
-		or			%o2, %lo(cplus_etrap_insn_4), %o2
-		stw			%o1, [%o2]
-		flush			%o2
-
-		retl
-		 nop

arch/sparc64/kernel/head.S

@@ -325,23 +325,7 @@ cheetah_tlb_fixup:
 1:	sethi	%hi(tlb_type), %g1
 	stw	%g2, [%g1 + %lo(tlb_type)]
 
-	BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g7,1f)
-	ba,pt	%xcc, 2f
-	 nop
-
-1:	/* Patch context register writes to support nucleus page
-	 * size correctly.
-	 */
-	call	cheetah_plus_patch_etrap
-	 nop
-	call	cheetah_plus_patch_rtrap
-	 nop
-	call	cheetah_plus_patch_fpdis
-	 nop
-	call	cheetah_plus_patch_winfixup
-	 nop
-
-2:	/* Patch copy/page operations to cheetah optimized versions. */
+	/* Patch copy/page operations to cheetah optimized versions. */
 	call	cheetah_patch_copyops
 	 nop
 	call	cheetah_patch_copy_page
@@ -398,32 +382,79 @@ tlb_fixup_done:
 	 nop
 	/* Not reached... */
 
-/* IMPORTANT NOTE: Whenever making changes here, check
- * trampoline.S as well. -jj */
-	.globl	setup_tba
-setup_tba:	/* i0 = is_starfire */
-	save	%sp, -160, %sp
+	/* This is meant to allow the sharing of this code between
+	 * boot processor invocation (via setup_tba() below) and
+	 * secondary processor startup (via trampoline.S).  The
+	 * former does use this code, the latter does not yet due
+	 * to some complexities.  That should be fixed up at some
+	 * point.
+	 */
+	.globl	setup_trap_table
+setup_trap_table:
+	save	%sp, -192, %sp
+
+	/* Force interrupts to be disabled.  Transferring over to
+	 * the Linux trap table is a very delicate operation.
+	 * Until we are actually on the Linux trap table, we cannot
+	 * get the PAGE_OFFSET linear mappings translated.  We need
+	 * that mapping to be setup in order to initialize the firmware
+	 * page tables.
+	 *
+	 * So there is this window of time, from the return from
+	 * prom_set_trap_table() until inherit_prom_mappings_post()
+	 * (in arch/sparc64/mm/init.c) completes, during which no
+	 * firmware address space accesses can be made.
+	 */
+	rdpr	%pstate, %o1
+	andn	%o1, PSTATE_IE, %o1
+	wrpr	%o1, 0x0, %pstate
+	wrpr	%g0, 15, %pil
 
-	rdpr	%tba, %g7
-	sethi	%hi(prom_tba), %o1
-	or	%o1, %lo(prom_tba), %o1
-	stx	%g7, [%o1]
+	/* Ok, now make the final valid firmware call to jump over
+	 * to the Linux trap table.
+	 */
+	call	prom_set_trap_table
+	 sethi	%hi(sparc64_ttable_tl0), %o0
+
+	/* Start using proper page size encodings in ctx register.  */
+	sethi	%hi(sparc64_kern_pri_context), %g3
+	ldx	[%g3 + %lo(sparc64_kern_pri_context)], %g2
+	mov	PRIMARY_CONTEXT, %g1
+	stxa	%g2, [%g1] ASI_DMMU
+	membar	#Sync
+
+	/* The Linux trap handlers expect various trap global registers
+	 * to be setup with some fixed values.  So here we set these
+	 * up very carefully.  These globals are:
+	 *
+	 * Alternate Globals (PSTATE_AG):
+	 *
+	 * %g6			--> current_thread_info()
+	 *
+	 * MMU Globals (PSTATE_MG):
+	 *
+	 * %g1			--> TLB_SFSR
+	 * %g2			--> ((_PAGE_VALID | _PAGE_SZ4MB |
+	 *			      _PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W)
+	 *			     ^ 0xfffff80000000000)
+	 * (this %g2 value is used for computing the PAGE_OFFSET kernel
+	 *  TLB entries quickly, the virtual address of the fault XOR'd
+	 *  with this %g2 value is the PTE to load into the TLB)
+	 * %g3			--> VPTE_BASE_CHEETAH or VPTE_BASE_SPITFIRE
+	 *
+	 * Interrupt Globals (PSTATE_IG, setup by init_irqwork_curcpu()):
+	 *
+	 * %g6			--> __irq_work[smp_processor_id()]
+	 */
 
-	/* Setup "Linux" globals 8-) */
 	rdpr	%pstate, %o1
 	mov	%g6, %o2
-	wrpr	%o1, (PSTATE_AG|PSTATE_IE), %pstate
-	sethi	%hi(sparc64_ttable_tl0), %g1
-	wrpr	%g1, %tba
+	wrpr	%o1, PSTATE_AG, %pstate
 	mov	%o2, %g6
 
-	/* Set up MMU globals */
-	wrpr	%o1, (PSTATE_MG|PSTATE_IE), %pstate
-
-	/* Set fixed globals used by dTLB miss handler. */
 #define KERN_HIGHBITS		((_PAGE_VALID|_PAGE_SZ4MB)^0xfffff80000000000)
 #define KERN_LOWBITS		(_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W)
-
+	wrpr	%o1, PSTATE_MG, %pstate
 	mov	TSB_REG, %g1
 	stxa	%g0, [%g1] ASI_DMMU
 	membar	#Sync
@@ -435,17 +466,17 @@ setup_tba:	/* i0 = is_starfire */
 	sllx	%g2, 32, %g2
 	or	%g2, KERN_LOWBITS, %g2
 
-	BRANCH_IF_ANY_CHEETAH(g3,g7,cheetah_vpte_base)
-	ba,pt	%xcc, spitfire_vpte_base
+	BRANCH_IF_ANY_CHEETAH(g3,g7,8f)
+	ba,pt	%xcc, 9f
 	 nop
 
-cheetah_vpte_base:
+8:
 	sethi		%uhi(VPTE_BASE_CHEETAH), %g3
 	or		%g3, %ulo(VPTE_BASE_CHEETAH), %g3
 	ba,pt		%xcc, 2f
 	 sllx		%g3, 32, %g3
 
-spitfire_vpte_base:
+9:
 	sethi		%uhi(VPTE_BASE_SPITFIRE), %g3
 	or		%g3, %ulo(VPTE_BASE_SPITFIRE), %g3
 	sllx		%g3, 32, %g3
@@ -471,36 +502,37 @@ spitfire_vpte_base:
 	sllx	%o2, 32, %o2
 	wr	%o2, %asr25
 
-	/* Ok, we're done setting up all the state our trap mechanims needs,
-	 * now get back into normal globals and let the PROM know what is up.
-	 */
 2:
 	wrpr	%g0, %g0, %wstate
-	wrpr	%o1, PSTATE_IE, %pstate
+	wrpr	%o1, 0x0, %pstate
 
 	call	init_irqwork_curcpu
 	 nop
 
-	call	prom_set_trap_table
-	 sethi	%hi(sparc64_ttable_tl0), %o0
-
-	BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g2,g3,1f)
-	ba,pt	%xcc, 2f
-	 nop
-
-1:	/* Start using proper page size encodings in ctx register.  */
-	sethi	%uhi(CTX_CHEETAH_PLUS_NUC), %g3
-	mov	PRIMARY_CONTEXT, %g1
-	sllx	%g3, 32, %g3
-	sethi	%hi(CTX_CHEETAH_PLUS_CTX0), %g2
-	or	%g3, %g2, %g3
-	stxa	%g3, [%g1] ASI_DMMU
-	membar	#Sync
-
-2:
+	/* Now we can turn interrupts back on. */
 	rdpr	%pstate, %o1
 	or	%o1, PSTATE_IE, %o1
 	wrpr	%o1, 0, %pstate
+	wrpr	%g0, 0x0, %pil
+
+	ret
+	 restore
+
+	.globl	setup_tba
+setup_tba:	/* i0 = is_starfire */
+	save	%sp, -192, %sp
+
+	/* The boot processor is the only cpu which invokes this
+	 * routine, the other cpus set things up via trampoline.S.
+	 * So save the OBP trap table address here.
+	 */
+	rdpr	%tba, %g7
+	sethi	%hi(prom_tba), %o1
+	or	%o1, %lo(prom_tba), %o1
+	stx	%g7, [%o1]
+
+	call	setup_trap_table
+	 nop
 
 	ret
 	 restore

arch/sparc64/kernel/irq.c

@@ -27,6 +27,7 @@
 #include <asm/atomic.h>
 #include <asm/system.h>
 #include <asm/irq.h>
+#include <asm/io.h>
 #include <asm/sbus.h>
 #include <asm/iommu.h>
 #include <asm/upa.h>

arch/sparc64/kernel/power.c

@@ -17,6 +17,7 @@
 
 #include <asm/system.h>
 #include <asm/ebus.h>
+#include <asm/isa.h>
 #include <asm/auxio.h>
 
 #include <linux/unistd.h>
@@ -100,46 +101,83 @@ static int powerd(void *__unused)
 	return 0;
 }
 
-static int __init has_button_interrupt(struct linux_ebus_device *edev)
+static int __init has_button_interrupt(unsigned int irq, int prom_node)
 {
-	if (edev->irqs[0] == PCI_IRQ_NONE)
+	if (irq == PCI_IRQ_NONE)
 		return 0;
-	if (!prom_node_has_property(edev->prom_node, "button"))
+	if (!prom_node_has_property(prom_node, "button"))
 		return 0;
 
 	return 1;
 }
 
-void __init power_init(void)
+static int __init power_probe_ebus(struct resource **resp, unsigned int *irq_p, int *prom_node_p)
 {
 	struct linux_ebus *ebus;
 	struct linux_ebus_device *edev;
+
+	for_each_ebus(ebus) {
+		for_each_ebusdev(edev, ebus) {
+			if (!strcmp(edev->prom_name, "power")) {
+				*resp = &edev->resource[0];
+				*irq_p = edev->irqs[0];
+				*prom_node_p = edev->prom_node;
+				return 0;
+			}
+		}
+	}
+	return -ENODEV;
+}
+
+static int __init power_probe_isa(struct resource **resp, unsigned int *irq_p, int *prom_node_p)
+{
+	struct sparc_isa_bridge *isa_bus;
+	struct sparc_isa_device *isa_dev;
+
+	for_each_isa(isa_bus) {
+		for_each_isadev(isa_dev, isa_bus) {
+			if (!strcmp(isa_dev->prom_name, "power")) {
+				*resp = &isa_dev->resource;
+				*irq_p = isa_dev->irq;
+				*prom_node_p = isa_dev->prom_node;
+				return 0;
+			}
+		}
+	}
+	return -ENODEV;
+}
+
+void __init power_init(void)
+{
+	struct resource *res = NULL;
+	unsigned int irq;
+	int prom_node;
 	static int invoked;
 
 	if (invoked)
 		return;
 	invoked = 1;
 
-	for_each_ebus(ebus) {
-		for_each_ebusdev(edev, ebus) {
-			if (!strcmp(edev->prom_name, "power"))
-				goto found;
-		}
-	}
+	if (!power_probe_ebus(&res, &irq, &prom_node))
+		goto found;
+
+	if (!power_probe_isa(&res, &irq, &prom_node))
+		goto found;
+
 	return;
 
 found:
-	power_reg = ioremap(edev->resource[0].start, 0x4);
+	power_reg = ioremap(res->start, 0x4);
 	printk("power: Control reg at %p ... ", power_reg);
 	poweroff_method = machine_halt;  /* able to use the standard halt */
-	if (has_button_interrupt(edev)) {
+	if (has_button_interrupt(irq, prom_node)) {
 		if (kernel_thread(powerd, NULL, CLONE_FS) < 0) {
 			printk("Failed to start power daemon.\n");
 			return;
 		}
 		printk("powerd running.\n");
 
-		if (request_irq(edev->irqs[0],
+		if (request_irq(irq,
 				power_handler, SA_SHIRQ, "power", NULL) < 0)
 			printk("power: Error, cannot register IRQ handler.\n");
 	} else {

arch/sparc64/kernel/rtrap.S

@@ -256,9 +256,8 @@ rt_continue:	ldx			[%sp + PTREGS_OFF + PT_V9_G1], %g1
 		brnz,pn			%l3, kern_rtt
 		 mov			PRIMARY_CONTEXT, %l7
 		ldxa			[%l7 + %l7] ASI_DMMU, %l0
-cplus_rtrap_insn_1:
-		sethi			%hi(0), %l1
-		sllx			%l1, 32, %l1
+		sethi			%hi(sparc64_kern_pri_nuc_bits), %l1
+		ldx			[%l1 + %lo(sparc64_kern_pri_nuc_bits)], %l1
 		or			%l0, %l1, %l0
 		stxa			%l0, [%l7] ASI_DMMU
 		flush			%g6
@@ -313,53 +312,36 @@ kern_fpucheck:	ldub			[%g6 + TI_FPDEPTH], %l5
 		wr			%g1, FPRS_FEF, %fprs
 		ldx			[%o1 + %o5], %g1
 		add			%g6, TI_XFSR, %o1
-		membar			#StoreLoad | #LoadLoad
 		sll			%o0, 8, %o2
 		add			%g6, TI_FPREGS, %o3
 		brz,pn			%l6, 1f
 		 add			%g6, TI_FPREGS+0x40, %o4
 
+		membar			#Sync
 		ldda			[%o3 + %o2] ASI_BLK_P, %f0
 		ldda			[%o4 + %o2] ASI_BLK_P, %f16
+		membar			#Sync
 1:		andcc			%l2, FPRS_DU, %g0
 		be,pn			%icc, 1f
 		 wr			%g1, 0, %gsr
 		add			%o2, 0x80, %o2
+		membar			#Sync
 		ldda			[%o3 + %o2] ASI_BLK_P, %f32
 		ldda			[%o4 + %o2] ASI_BLK_P, %f48
-
 1:		membar			#Sync
 		ldx			[%o1 + %o5], %fsr
 2:		stb			%l5, [%g6 + TI_FPDEPTH]
 		ba,pt			%xcc, rt_continue
 		 nop
 5:		wr			%g0, FPRS_FEF, %fprs
-		membar			#StoreLoad | #LoadLoad
 		sll			%o0, 8, %o2
 
 		add			%g6, TI_FPREGS+0x80, %o3
 		add			%g6, TI_FPREGS+0xc0, %o4
+		membar			#Sync
 		ldda			[%o3 + %o2] ASI_BLK_P, %f32
 		ldda			[%o4 + %o2] ASI_BLK_P, %f48
 		membar			#Sync
 		wr			%g0, FPRS_DU, %fprs
 		ba,pt			%xcc, rt_continue
 		 stb			%l5, [%g6 + TI_FPDEPTH]
-
-cplus_rinsn_1:
-		sethi			%uhi(CTX_CHEETAH_PLUS_NUC), %l1
-
-		.globl			cheetah_plus_patch_rtrap
-cheetah_plus_patch_rtrap:
-		/* We configure the dTLB512_0 for 4MB pages and the
-		 * dTLB512_1 for 8K pages when in context zero.
-		 */
-		sethi			%hi(cplus_rinsn_1), %o0
-		sethi			%hi(cplus_rtrap_insn_1), %o2
-		lduw			[%o0 + %lo(cplus_rinsn_1)], %o1
-		or			%o2, %lo(cplus_rtrap_insn_1), %o2
-		stw			%o1, [%o2]
-		flush			%o2
-
-		retl
-		 nop

arch/sparc64/kernel/setup.c

@@ -187,17 +187,13 @@ int prom_callback(long *args)
 		}
 
 		if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) {
-			unsigned long kernel_pctx = 0;
-
-			if (tlb_type == cheetah_plus)
-				kernel_pctx |= (CTX_CHEETAH_PLUS_NUC |
-						CTX_CHEETAH_PLUS_CTX0);
+			extern unsigned long sparc64_kern_pri_context;
 
 			/* Spitfire Errata #32 workaround */
 			__asm__ __volatile__("stxa	%0, [%1] %2\n\t"
 					     "flush	%%g6"
 					     : /* No outputs */
-					     : "r" (kernel_pctx),
+					     : "r" (sparc64_kern_pri_context),
 					       "r" (PRIMARY_CONTEXT),
 					       "i" (ASI_DMMU));
 

arch/sparc64/kernel/trampoline.S

@@ -336,20 +336,13 @@ do_unlock:
 	call		init_irqwork_curcpu
 	 nop
 
-	BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g2,g3,1f)
-	ba,pt	%xcc, 2f
-	 nop
-
-1:	/* Start using proper page size encodings in ctx register.  */
-	sethi	%uhi(CTX_CHEETAH_PLUS_NUC), %g3
+	/* Start using proper page size encodings in ctx register.  */
+	sethi	%hi(sparc64_kern_pri_context), %g3
+	ldx	[%g3 + %lo(sparc64_kern_pri_context)], %g2
 	mov	PRIMARY_CONTEXT, %g1
-	sllx	%g3, 32, %g3
-	sethi	%hi(CTX_CHEETAH_PLUS_CTX0), %g2
-	or	%g3, %g2, %g3
-	stxa	%g3, [%g1] ASI_DMMU
+	stxa	%g2, [%g1] ASI_DMMU
 	membar	#Sync
 
-2:
 	rdpr		%pstate, %o1
 	or		%o1, PSTATE_IE, %o1
 	wrpr		%o1, 0, %pstate

arch/sparc64/kernel/winfixup.S

@@ -16,23 +16,14 @@
 	.text
 
 set_pcontext:
-cplus_winfixup_insn_1:
-	sethi	%hi(0), %l1
+	sethi	%hi(sparc64_kern_pri_context), %l1
+	ldx	[%l1 + %lo(sparc64_kern_pri_context)], %l1
 	mov	PRIMARY_CONTEXT, %g1
-	sllx	%l1, 32, %l1
-cplus_winfixup_insn_2:
-	sethi	%hi(0), %g2
-	or	%l1, %g2, %l1
 	stxa	%l1, [%g1] ASI_DMMU
 	flush	%g6
 	retl
 	 nop
 
-cplus_wfinsn_1:
-	sethi	%uhi(CTX_CHEETAH_PLUS_NUC), %l1
-cplus_wfinsn_2:
-	sethi	%hi(CTX_CHEETAH_PLUS_CTX0), %g2
-
 	.align	32
 
 	/* Here are the rules, pay attention.
@@ -395,23 +386,3 @@ window_dax_from_user_common:
 	 add		%sp, PTREGS_OFF, %o0
 	ba,pt		%xcc, rtrap
 	 clr		%l6
-	
-
-	.globl		cheetah_plus_patch_winfixup
-cheetah_plus_patch_winfixup:
-	sethi			%hi(cplus_wfinsn_1), %o0
-	sethi			%hi(cplus_winfixup_insn_1), %o2
-	lduw			[%o0 + %lo(cplus_wfinsn_1)], %o1
-	or			%o2, %lo(cplus_winfixup_insn_1), %o2
-	stw			%o1, [%o2]
-	flush			%o2
-
-	sethi			%hi(cplus_wfinsn_2), %o0
-	sethi			%hi(cplus_winfixup_insn_2), %o2
-	lduw			[%o0 + %lo(cplus_wfinsn_2)], %o1
-	or			%o2, %lo(cplus_winfixup_insn_2), %o2
-	stw			%o1, [%o2]
-	flush			%o2
-
-	retl
-	 nop

arch/sparc64/lib/VISsave.S

@@ -59,15 +59,17 @@ vis1:	ldub		[%g6 + TI_FPSAVED], %g3
 	be,pn		%icc, 9b
 	 add		%g6, TI_FPREGS, %g2
 	andcc		%o5, FPRS_DL, %g0
-	membar		#StoreStore | #LoadStore
 
 	be,pn		%icc, 4f
 	 add		%g6, TI_FPREGS+0x40, %g3
+	membar		#Sync
 	stda		%f0, [%g2 + %g1] ASI_BLK_P
 	stda		%f16, [%g3 + %g1] ASI_BLK_P
+	membar		#Sync
 	andcc		%o5, FPRS_DU, %g0
 	be,pn		%icc, 5f
 4:	 add		%g1, 128, %g1
+	membar		#Sync
 	stda		%f32, [%g2 + %g1] ASI_BLK_P
 
 	stda		%f48, [%g3 + %g1] ASI_BLK_P
@@ -87,7 +89,7 @@ vis1:	ldub		[%g6 + TI_FPSAVED], %g3
 	sll		%g1, 5, %g1
 	add		%g6, TI_FPREGS+0xc0, %g3
 	wr		%g0, FPRS_FEF, %fprs
-	membar		#StoreStore | #LoadStore
+	membar		#Sync
 	stda		%f32, [%g2 + %g1] ASI_BLK_P
 	stda		%f48, [%g3 + %g1] ASI_BLK_P
 	membar		#Sync
@@ -128,8 +130,8 @@ VISenterhalf:
 	be,pn		%icc, 4f
 	 add		%g6, TI_FPREGS, %g2
 
-	membar		#StoreStore | #LoadStore
 	add		%g6, TI_FPREGS+0x40, %g3
+	membar		#Sync
 	stda		%f0, [%g2 + %g1] ASI_BLK_P
 	stda		%f16, [%g3 + %g1] ASI_BLK_P
 	membar		#Sync

arch/um/Makefile

@@ -152,7 +152,7 @@ archclean:
 $(SYMLINK_HEADERS):
 	@echo '  SYMLINK $@'
 ifneq ($(KBUILD_SRC),)
-	ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
+	$(Q)ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
 else
 	$(Q)cd $(TOPDIR)/$(dir $@) ; \
 	ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)

arch/um/drivers/cow.h

@@ -3,15 +3,40 @@
 
 #include <asm/types.h>
 
-#if defined(__BIG_ENDIAN)
-# define ntohll(x) (x)
-# define htonll(x) (x)
-#elif defined(__LITTLE_ENDIAN)
-# define ntohll(x)  bswap_64(x)
-# define htonll(x)  bswap_64(x)
+#if defined(__KERNEL__)
+
+# include <asm/byteorder.h>
+
+# if defined(__BIG_ENDIAN)
+#	define ntohll(x) (x)
+#	define htonll(x) (x)
+# elif defined(__LITTLE_ENDIAN)
+#	define ntohll(x)  be64_to_cpu(x)
+#	define htonll(x)  cpu_to_be64(x)
+# else
+#	error "Could not determine byte order"
+# endif
+
 #else
-#error "__BYTE_ORDER not defined"
+/* For the definition of ntohl, htonl and __BYTE_ORDER */
+#include <endian.h>
+#include <netinet/in.h>
+#if defined(__BYTE_ORDER)
+
+#  if __BYTE_ORDER == __BIG_ENDIAN
+#	define ntohll(x) (x)
+#	define htonll(x) (x)
+#  elif __BYTE_ORDER == __LITTLE_ENDIAN
+#	define ntohll(x)  bswap_64(x)
+#	define htonll(x)  bswap_64(x)
+#  else
+#	error "Could not determine byte order: __BYTE_ORDER uncorrectly defined"
+#  endif
+
+#else  /* ! defined(__BYTE_ORDER) */
+#	error "Could not determine byte order: __BYTE_ORDER not defined"
 #endif
+#endif /* ! defined(__KERNEL__) */
 
 extern int init_cow_file(int fd, char *cow_file, char *backing_file,
 			 int sectorsize, int alignment, int *bitmap_offset_out,

arch/um/drivers/cow_user.c

@@ -9,7 +9,6 @@
 #include <sys/time.h>
 #include <sys/param.h>
 #include <sys/user.h>
-#include <netinet/in.h>
 
 #include "os.h"
 

arch/um/include/registers.h

@@ -15,16 +15,6 @@ extern void save_registers(int pid, union uml_pt_regs *regs);
 extern void restore_registers(int pid, union uml_pt_regs *regs);
 extern void init_registers(int pid);
 extern void get_safe_registers(unsigned long * regs);
+extern void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer);
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

arch/um/include/sysdep-x86_64/ptrace.h

@@ -218,10 +218,6 @@ struct syscall_args {
                 case RBP: UPT_RBP(regs) = __upt_val; break; \
                 case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \
                 case CS: UPT_CS(regs) = __upt_val; break; \
-                case DS: UPT_DS(regs) = __upt_val; break; \
-                case ES: UPT_ES(regs) = __upt_val; break; \
-                case FS: UPT_FS(regs) = __upt_val; break; \
-                case GS: UPT_GS(regs) = __upt_val; break; \
                 case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \
                 default :  \
                         panic("Bad register in UPT_SET : %d\n", reg);  \

arch/um/kernel/sysrq.c

@@ -62,13 +62,7 @@ void show_stack(struct task_struct *task, unsigned long *esp)
 
 	if (esp == NULL) {
 		if (task != current && task != NULL) {
-			/* XXX: Isn't this bogus? I.e. isn't this the
-			 * *userspace* stack of this task? If not so, use this
-			 * even when task == current (as in i386).
-			 */
 			esp = (unsigned long *) KSTK_ESP(task);
-			/* Which one? No actual difference - just coding style.*/
-			//esp = (unsigned long *) PT_REGS_IP(&task->thread.regs);
 		} else {
 			esp = (unsigned long *) &esp;
 		}
@@ -84,5 +78,5 @@ void show_stack(struct task_struct *task, unsigned long *esp)
 	}
 
 	printk("Call Trace: \n");
-	show_trace(current, esp);
+	show_trace(task, esp);
 }