Merge samba.org:/scratch/anton/linux-2.5

into samba.org:/scratch/anton/linux-2.5_ppc64

arch/ppc64/Makefile

@@ -18,7 +18,8 @@ KERNELLOAD	=0xc000000000000000
 LINKFLAGS	= -T arch/ppc64/vmlinux.lds -Bstatic \
 		-e $(KERNELLOAD) -Ttext $(KERNELLOAD)
 CFLAGS		:= $(CFLAGS) -fsigned-char -msoft-float -pipe \
-		-Wno-uninitialized -mminimal-toc -mtraceback=full
+		-Wno-uninitialized -mminimal-toc -mtraceback=full \
+		-Wa,-mpower4
 CPP		= $(CC) -E $(CFLAGS)
 
 

arch/ppc64/boot/main.c

@@ -153,7 +153,7 @@ make_bi_recs(unsigned long addr)
 
 	rec = bi_rec_alloc(rec, 2);
 	rec->tag = BI_MACHTYPE;
-	rec->data[0] = _MACH_pSeries;
+	rec->data[0] = PLATFORM_PSERIES;
 	rec->data[1] = 1;
 
 	if ( initrd_size > 0 ) {

arch/ppc64/config.in

@@ -103,8 +103,12 @@ if [ "$CONFIG_SCSI" != "n" ]; then
 fi
 endmenu
 
+source drivers/message/fusion/Config.in
+
 source drivers/ieee1394/Config.in
 
+source drivers/message/i2o/Config.in
+
 if [ "$CONFIG_NET" = "y" ]; then
    mainmenu_option next_comment
    comment 'Network device support'
@@ -181,6 +185,9 @@ if [ "$CONFIG_VIOCD" = "y" ]; then
 fi
 
 source drivers/char/Config.in
+
+source drivers/media/Config.in
+
 source fs/Config.in
 
 mainmenu_option next_comment
@@ -194,6 +201,8 @@ endmenu
 
 source drivers/usb/Config.in
 
+source net/bluetooth/Config.in
+
 mainmenu_option next_comment
 comment 'Kernel hacking'
 

arch/ppc64/kernel/idle.c

@@ -146,3 +146,8 @@ int cpu_idle(void)
 }
 
 #endif /* CONFIG_PPC_ISERIES */
+
+void default_idle(void)
+{
+	barrier();
+}

arch/ppc64/kernel/ioctl32.c

@@ -3756,6 +3756,7 @@ COMPATIBLE_IOCTL(TCSETSW),
 COMPATIBLE_IOCTL(TCSETSF),
 COMPATIBLE_IOCTL(TIOCLINUX),
 COMPATIBLE_IOCTL(TIOCSTART),
+COMPATIBLE_IOCTL(TIOCSTOP),
 /* Little t */
 COMPATIBLE_IOCTL(TIOCGETD),
 COMPATIBLE_IOCTL(TIOCSETD),
@@ -4336,8 +4337,6 @@ COMPATIBLE_IOCTL(RNDCLEARPOOL),
 COMPATIBLE_IOCTL(HCIDEVUP),
 COMPATIBLE_IOCTL(HCIDEVDOWN),
 COMPATIBLE_IOCTL(HCIDEVRESET),
-COMPATIBLE_IOCTL(HCIRESETSTAT),
-COMPATIBLE_IOCTL(HCIGETINFO),
 COMPATIBLE_IOCTL(HCIGETDEVLIST),
 COMPATIBLE_IOCTL(HCISETRAW),
 COMPATIBLE_IOCTL(HCISETSCAN),

arch/ppc64/kernel/pSeries_htab.c

@@ -359,7 +359,7 @@ static void pSeries_hpte_invalidate(unsigned long slot, unsigned long va,
 
 	/* Invalidate the tlb */
 	if (!large && local && __is_processor(PV_POWER4)) {
-		_tlbiel(va, large);
+		_tlbiel(va);
 	} else {
 		spin_lock_irqsave(&pSeries_tlbie_lock, flags);
 		_tlbie(va, large);

arch/ppc64/kernel/pci.c

@@ -498,6 +498,8 @@ pcibios_init(void)
 
 }
 
+subsys_initcall(pcibios_init);
+
 int __init
 pcibios_assign_all_busses(void)
 {

arch/ppc64/kernel/stab.c

@@ -22,7 +22,7 @@ int make_ste(unsigned long stab,
 	     unsigned long esid, unsigned long vsid);
 void make_slbe(unsigned long esid, unsigned long vsid,
 	       int large);
-extern struct Naca *naca;
+extern struct naca_struct *naca;
 
 /*
  * Build an entry for the base kernel segment and put it into

arch/ppc64/kernel/traps.c

@@ -53,6 +53,7 @@ extern void (*xmon_fault_handler)(struct pt_regs *regs);
 #endif
 
 #ifdef CONFIG_XMON
+#define CONFIG_DEBUGGER
 void (*debugger)(struct pt_regs *regs) = xmon;
 int (*debugger_bpt)(struct pt_regs *regs) = xmon_bpt;
 int (*debugger_sstep)(struct pt_regs *regs) = xmon_sstep;
@@ -61,6 +62,7 @@ int (*debugger_dabr_match)(struct pt_regs *regs) = xmon_dabr_match;
 void (*debugger_fault_handler)(struct pt_regs *regs);
 #else
 #ifdef CONFIG_KGDB
+#define CONFIG_DEBUGGER
 void (*debugger)(struct pt_regs *regs);
 int (*debugger_bpt)(struct pt_regs *regs);
 int (*debugger_sstep)(struct pt_regs *regs);
@@ -69,29 +71,46 @@ int (*debugger_dabr_match)(struct pt_regs *regs);
 void (*debugger_fault_handler)(struct pt_regs *regs);
 #endif
 #endif
+
 /*
  * Trap & Exception support
  */
 
-void
-_exception(int signr, struct pt_regs *regs)
+/* Should we panic on bad kernel exceptions or try to recover */
+#undef PANIC_ON_ERROR
+
+static spinlock_t die_lock = SPIN_LOCK_UNLOCKED;
+
+void die(const char *str, struct pt_regs *regs, long err)
 {
-	if (!user_mode(regs))
-	{
+	console_verbose();
+	spin_lock_irq(&die_lock);
+	bust_spinlocks(1);
+	printk("Oops: %s, sig: %ld\n", str, err);
 	show_regs(regs);
-#if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
-		debugger(regs);
-#endif
 	print_backtrace((unsigned long *)regs->gpr[1]);
-		panic("Exception in kernel pc %lx signal %d",regs->nip,signr);
-#if defined(CONFIG_PPCDBG) && (defined(CONFIG_XMON) || defined(CONFIG_KGDB))
-	/* Allow us to catch SIGILLs for 64-bit app/glibc debugging. -Peter */
-	} else if (signr == SIGILL) {
-		ifppcdebug(PPCDBG_SIGNALXMON)
+	bust_spinlocks(0);
+	spin_unlock_irq(&die_lock);
+
+#ifdef PANIC_ON_ERROR
+	panic(str);
+#else
+	do_exit(SIGSEGV);
+#endif
+}
+
+static void
+_exception(int signr, siginfo_t *info, struct pt_regs *regs)
+{
+	if (!user_mode(regs)) {
+#ifdef CONFIG_DEBUGGER
+		if (debugger)
 			debugger(regs);
 #endif
+		die("Exception in kernel mode\n", regs, signr);
 	}
-	force_sig(signr, current);
+
+	force_sig_info(signr, info, current);
 }
 
 /* Get the error information for errors coming through the
@@ -130,9 +149,8 @@ static void FWNMI_release_errinfo(void)
 void
 SystemResetException(struct pt_regs *regs)
 {
-	char *msg = "System Reset in kernel mode.\n";
-	udbg_printf(msg); printk(msg);
 	if (fwnmi_active) {
+		char *msg;
 		unsigned long *r3 = __va(regs->gpr[3]); /* for FWNMI debug */
 		struct rtas_error_log *errlog;
 
@@ -140,17 +158,33 @@ SystemResetException(struct pt_regs *regs)
 		udbg_printf(msg, r3); printk(msg, r3);
 		errlog = FWNMI_get_errinfo(regs);
 	}
-#if defined(CONFIG_XMON)
-	xmon(regs);
-	udbg_printf("leaving xmon...\n");
+
+#ifdef CONFIG_DEBUGGER
+	if (debugger)
+		debugger(regs);
+#endif
+
+#ifdef PANIC_ON_ERROR
+	panic("System Reset");
 #else
-	for(;;);
+	/* Must die if the interrupt is not recoverable */
+	if (!(regs->msr & MSR_RI))
+		panic("Unrecoverable System Reset");
 #endif
+
+	/* What should we do here? We could issue a shutdown or hard reset. */
+}
+
+static int power4_handle_mce(struct pt_regs *regs)
+{
+	return 0;
 }
 
 void
 MachineCheckException(struct pt_regs *regs)
 {
+	siginfo_t info;
+
 	if (fwnmi_active) {
 		struct rtas_error_log *errhdr = FWNMI_get_errinfo(regs);
 		if (errhdr) {
@@ -158,117 +192,227 @@ MachineCheckException(struct pt_regs *regs)
 		}
 		FWNMI_release_errinfo();
 	}
-	if ( !user_mode(regs) )
-	{
-#if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
+
+	if (!user_mode(regs)) {
+		/* Attempt to recover if the interrupt is recoverable */
+		if (regs->msr & MSR_RI) {
+			if (__is_processor(PV_POWER4) &&
+			    power4_handle_mce(regs))
+				return;
+		}
+
+#ifdef CONFIG_DEBUGGER
 		if (debugger_fault_handler) {
 			debugger_fault_handler(regs);
 			return;
 		}
+		if (debugger)
+			debugger(regs);
 #endif
+		console_verbose();
+		spin_lock_irq(&die_lock);
+		bust_spinlocks(1);
 		printk("Machine check in kernel mode.\n");
 		printk("Caused by (from SRR1=%lx): ", regs->msr);
 		show_regs(regs);
-#if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
-		debugger(regs);
-#endif
 		print_backtrace((unsigned long *)regs->gpr[1]);
-		panic("machine check");
+		bust_spinlocks(0);
+		spin_unlock_irq(&die_lock);
+		panic("Unrecoverable Machine Check");
 	}
-	_exception(SIGSEGV, regs);	
-}
 
-void
-SMIException(struct pt_regs *regs)
-{
-#if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
-	{
-		debugger(regs);
-		return;
-	}
-#endif
-	show_regs(regs);
-	print_backtrace((unsigned long *)regs->gpr[1]);
-	panic("System Management Interrupt");
+	/*
+	 * XXX we should check RI bit on exception exit and kill the
+	 * task if it was cleared
+	 */
+	info.si_signo = SIGBUS;
+	info.si_errno = 0;
+	info.si_code = BUS_ADRERR;
+	info.si_addr = (void *)regs->nip;
+	_exception(SIGSEGV, &info, regs);
 }
 
 void
 UnknownException(struct pt_regs *regs)
 {
+	siginfo_t info;
+
 	printk("Bad trap at PC: %lx, SR: %lx, vector=%lx\n",
 	       regs->nip, regs->msr, regs->trap);
-	_exception(SIGTRAP, regs);	
+
+	info.si_signo = SIGTRAP;
+	info.si_errno = 0;
+	info.si_code = 0;
+	info.si_addr = 0;
+	_exception(SIGTRAP, &info, regs);	
 }
 
 void
 InstructionBreakpointException(struct pt_regs *regs)
 {
-#if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
-	if (debugger_iabr_match(regs))
+	siginfo_t info;
+
+#ifdef CONFIG_DEBUGGER
+	if (debugger_iabr_match && debugger_iabr_match(regs))
 		return;
 #endif
-	_exception(SIGTRAP, regs);
+
+	info.si_signo = SIGTRAP;
+	info.si_errno = 0;
+	info.si_code = TRAP_BRKPT;
+	info.si_addr = (void *)regs->nip;
+	_exception(SIGTRAP, &info, regs);
+}
+
+static void parse_fpe(struct pt_regs *regs)
+{
+	siginfo_t info;
+	unsigned int *tmp;
+	unsigned int fpscr;
+
+	if (regs->msr & MSR_FP)
+		giveup_fpu(current);
+
+	tmp = &current->thread.fpscr;
+	fpscr = *tmp;
+
+	/* Invalid operation */
+	if ((fpscr & FPSCR_VE) && (fpscr & FPSCR_VX))
+		info.si_code = FPE_FLTINV;
+
+	/* Overflow */
+	else if ((fpscr & FPSCR_OE) && (fpscr & FPSCR_OX))
+		info.si_code = FPE_FLTOVF;
+
+	/* Underflow */
+	else if ((fpscr & FPSCR_UE) && (fpscr & FPSCR_UX))
+		info.si_code = FPE_FLTUND;
+
+	/* Divide by zero */
+	else if ((fpscr & FPSCR_ZE) && (fpscr & FPSCR_ZX))
+		info.si_code = FPE_FLTDIV;
+
+	/* Inexact result */
+	else if ((fpscr & FPSCR_XE) && (fpscr & FPSCR_XX))
+		info.si_code = FPE_FLTRES;
+
+	else
+		info.si_code = 0;
+
+	info.si_signo = SIGFPE;
+	info.si_errno = 0;
+	info.si_addr = (void *)regs->nip;
+	_exception(SIGFPE, &info, regs);
 }
 
 void
 ProgramCheckException(struct pt_regs *regs)
 {
+	siginfo_t info;
+
 	if (regs->msr & 0x100000) {
 		/* IEEE FP exception */
-		_exception(SIGFPE, regs);
+
+		parse_fpe(regs);
+	} else if (regs->msr & 0x40000) {
+		/* Privileged instruction */
+
+		info.si_signo = SIGILL;
+		info.si_errno = 0;
+		info.si_code = ILL_PRVOPC;
+		info.si_addr = (void *)regs->nip;
+		_exception(SIGILL, &info, regs);
 	} else if (regs->msr & 0x20000) {
 		/* trap exception */
-#if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
-		if (debugger_bpt(regs))
+
+#ifdef CONFIG_DEBUGGER
+		if (debugger_bpt && debugger_bpt(regs))
 			return;
 #endif
-		_exception(SIGTRAP, regs);
+		info.si_signo = SIGTRAP;
+		info.si_errno = 0;
+		info.si_code = TRAP_BRKPT;
+		info.si_addr = (void *)regs->nip;
+		_exception(SIGTRAP, &info, regs);
 	} else {
-		_exception(SIGILL, regs);
+		/* Illegal instruction */
+
+		info.si_signo = SIGILL;
+		info.si_errno = 0;
+		info.si_code = ILL_ILLTRP;
+		info.si_addr = (void *)regs->nip;
+		_exception(SIGILL, &info, regs);
 	}
 }
 
 void
 SingleStepException(struct pt_regs *regs)
 {
+	siginfo_t info;
+
 	regs->msr &= ~MSR_SE;  /* Turn off 'trace' bit */
-#if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
-	if (debugger_sstep(regs))
+
+#ifdef CONFIG_DEBUGGER
+	if (debugger_sstep && debugger_sstep(regs))
 		return;
 #endif
-	_exception(SIGTRAP, regs);	
-}
 
-/* Dummy handler for Performance Monitor */
+	info.si_signo = SIGTRAP;
+	info.si_errno = 0;
+	info.si_code = TRAP_TRACE;
+	info.si_addr = (void *)regs->nip;
+	_exception(SIGTRAP, &info, regs);	
+}
 
 void
 PerformanceMonitorException(struct pt_regs *regs)
 {
-	_exception(SIGTRAP, regs);
+	siginfo_t info;
+
+	info.si_signo = SIGTRAP;
+	info.si_errno = 0;
+	info.si_code = TRAP_BRKPT;
+	info.si_addr = 0;
+	_exception(SIGTRAP, &info, regs);
 }
 
 void
 AlignmentException(struct pt_regs *regs)
 {
 	int fixed;
+	siginfo_t info;
 
 	fixed = fix_alignment(regs);
+
 	if (fixed == 1) {
-		ifppcdebug(PPCDBG_ALIGNFIXUP)
 		if (!user_mode(regs))
-				PPCDBG(PPCDBG_ALIGNFIXUP, "fix alignment at %lx\n", regs->nip);
+			PPCDBG(PPCDBG_ALIGNFIXUP, "fix alignment at %lx\n",
+			       regs->nip);
 		regs->nip += 4;	/* skip over emulated instruction */
 		return;
 	}
+
+	/* Operand address was bad */	
 	if (fixed == -EFAULT) {
-		/* fixed == -EFAULT means the operand address was bad */
-		if (user_mode(regs))
-			force_sig(SIGSEGV, current);
-		else
+		if (user_mode(regs)) {
+			info.si_signo = SIGSEGV;
+			info.si_errno = 0;
+			info.si_code = SEGV_MAPERR;
+			info.si_addr = (void *)regs->dar;
+			force_sig_info(SIGSEGV, &info, current);
+		} else {
+			/* Search exception table */
 			bad_page_fault(regs, regs->dar);
+		}
+
 		return;
 	}
-	_exception(SIGBUS, regs);	
+
+	info.si_signo = SIGBUS;
+	info.si_errno = 0;
+	info.si_code = BUS_ADRALN;
+	info.si_addr = (void *)regs->nip;
+	_exception(SIGBUS, &info, regs);	
 }
 
 void __init trap_init(void)

arch/ppc64/mm/fault.c

@@ -45,9 +45,7 @@ extern int (*debugger_dabr_match)(struct pt_regs *);
 int debugger_kernel_faults = 1;
 #endif
 
-extern void die_if_kernel(char *, struct pt_regs *, long);
-void bad_page_fault(struct pt_regs *, unsigned long);
-void do_page_fault(struct pt_regs *, unsigned long, unsigned long);
+void bad_page_fault(struct pt_regs *, unsigned long, int);
 
 /*
  * For 600- and 800-family processors, the error_code parameter is DSISR
@@ -86,7 +84,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 #endif /* CONFIG_XMON || CONFIG_KGDB */
 
 	if (in_interrupt() || mm == NULL) {
-		bad_page_fault(regs, address);
+		bad_page_fault(regs, address, SIGSEGV);
 		return;
 	}
 	down_read(&mm->mmap_sem);
@@ -159,7 +157,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 		return;
 	}
 
-	bad_page_fault(regs, address);
+	bad_page_fault(regs, address, SIGSEGV);
 	return;
 
 /*
@@ -176,7 +174,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 	printk("VM: killing process %s\n", current->comm);
 	if (user_mode(regs))
 		do_exit(SIGKILL);
-	bad_page_fault(regs, address);
+	bad_page_fault(regs, address, SIGKILL);
 	return;
 
 do_sigbus:
@@ -187,7 +185,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 	info.si_addr = (void *)address;
 	force_sig_info (SIGBUS, &info, current);
 	if (!user_mode(regs))
-		bad_page_fault(regs, address);
+		bad_page_fault(regs, address, SIGBUS);
 }
 
 /*
@@ -196,8 +194,10 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
  * in traps.c.
  */
 void
-bad_page_fault(struct pt_regs *regs, unsigned long address)
+bad_page_fault(struct pt_regs *regs, unsigned long address, int sig)
 {
+	extern void die(const char *, struct pt_regs *, long);
+
 	unsigned long fixup;
 
 	/* Are we prepared to handle this fault?  */
@@ -207,13 +207,10 @@ bad_page_fault(struct pt_regs *regs, unsigned long address)
 	}
 
 	/* kernel has accessed a bad area */
-	show_regs(regs);
 #if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
 	if (debugger_kernel_faults)
 		debugger(regs);
 #endif
-	print_backtrace( (unsigned long *)regs->gpr[1] );
-	panic("kernel access of bad area pc %lx lr %lx address %lX tsk %s/%d",
-	      regs->nip,regs->link,address,current->comm,current->pid);
+	die("Kernel access of bad area", regs, sig);
 }
 

arch/ppc64/mm/init.c

@@ -247,6 +247,7 @@ static void map_io_page(unsigned long ea, unsigned long pa, int flags)
 void
 flush_tlb_mm(struct mm_struct *mm)
 {
+	spin_lock(&mm->page_table_lock);
 	if (mm->map_count) {
 		struct vm_area_struct *mp;
 		for (mp = mm->mmap; mp != NULL; mp = mp->vm_next)
@@ -261,6 +262,7 @@ flush_tlb_mm(struct mm_struct *mm)
 
 	/* XXX are there races with checking cpu_vm_mask? - Anton */
 	mm->cpu_vm_mask = 0;
+	spin_unlock(&mm->page_table_lock);
 }
 
 /*
@@ -666,6 +668,8 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
  * fault has been handled by updating a PTE in the linux page tables.
  * We use it to preload an HPTE into the hash table corresponding to
  * the updated linux PTE.
+ * 
+ * This must always be called with the mm->page_table_lock held
  */
 void update_mmu_cache(struct vm_area_struct *vma, unsigned long ea,
 		      pte_t pte)

include/asm-ppc64/fcntl.h

@@ -26,7 +26,7 @@
 #define O_DIRECTORY      040000	/* must be a directory */
 #define O_NOFOLLOW      0100000	/* don't follow links */
 #define O_LARGEFILE     0200000
-#define O_DIRECT	0400000	/* direct disk access hint - currently ignored */
+#define O_DIRECT	0400000	/* direct disk access hint */
 
 #define F_DUPFD		0	/* dup */
 #define F_GETFD		1	/* get close_on_exec */

include/asm-ppc64/memory.h

@@ -50,7 +50,7 @@ static inline void isync(void)
 
 #define HMT_LOW		"\tor	1,1,1		# low priority\n"
 #define HMT_MEDIUM	"\tor	2,2,2		# medium priority\n"
-#define HMT_MEDIUM	"\tor	3,3,3		# high priority\n"
+#define HMT_HIGH	"\tor	3,3,3		# high priority\n"
 #else
 #define HMT_low()	do { } while(0)
 #define HMT_medium()	do { } while(0)

include/asm-ppc64/mmu.h

@@ -211,18 +211,11 @@ static inline void _tlbie(unsigned long va, int large)
 	asm volatile("eieio; tlbsync; ptesync": : :"memory");
 }
 
-static inline void _tlbiel(unsigned long va, int large)
+static inline void _tlbiel(unsigned long va)
 {
 	asm volatile("ptesync": : :"memory");
-
-	if (large) {
-		asm volatile("clrldi	%0,%0,16\n\
-			      tlbiel	%0,1" : : "r"(va) : "memory");
-	} else {
 	asm volatile("clrldi	%0,%0,16\n\
-			      tlbiel	%0,0" : : "r"(va) : "memory");
-	}
-
+		      tlbiel	%0" : : "r"(va) : "memory");
 	asm volatile("ptesync": : :"memory");
 }
 

include/asm-ppc64/page.h

@@ -215,9 +215,12 @@ static inline int get_order(unsigned long size)
 #define __a2p(x) ((void *) absolute_to_phys(x))
 #define __a2v(x) ((void *) __va(absolute_to_phys(x)))
 
-#define virt_to_page(kaddr) (mem_map+(__pa((unsigned long)kaddr) >> PAGE_SHIFT))
+#define pfn_to_page(pfn)	(mem_map + (pfn))
+#define page_to_pfn(pfn)	((unsigned long)((pfn) - mem_map))
+#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
 
-#define VALID_PAGE(page)    ((page - mem_map) < max_mapnr)
+#define pfn_valid(pfn)		((pfn) < max_mapnr)
+#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
 
 #define MAP_NR(addr)		(__pa(addr) >> PAGE_SHIFT)
 

include/asm-ppc64/pgtable.h

@@ -167,22 +167,14 @@ extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
  * Conversion functions: convert a page and protection to a page entry,
  * and a page entry and page directory to the page they refer to.
  *
- * mk_pte_phys takes a physical address as input 
- *
  * mk_pte takes a (struct page *) as input
  */
+#define mk_pte(page, pgprot)	pfn_pte(page_to_pfn(page), (pgprot))
 
-#define mk_pte_phys(physpage,pgprot)                                      \
-({									  \
-	pte_t pte;							  \
-	pte_val(pte) = (((physpage)<<(PTE_SHIFT-PAGE_SHIFT)) | pgprot_val(pgprot)); \
-	pte;							          \
-})
-
-#define mk_pte(page,pgprot)                                               \
+#define pfn_pte(pfn,pgprot)						\
 ({									\
 	pte_t pte;							\
-	pte_val(pte) = ((unsigned long)((page) - mem_map) << PTE_SHIFT) |   \
+	pte_val(pte) = ((unsigned long)(pfn) << PTE_SHIFT) |   		\
                         pgprot_val(pgprot);				\
 	pte;								\
 })
@@ -195,8 +187,8 @@ extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
 
 /* pte_clear moved to later in this file */
 
-#define pte_pagenr(x)		((unsigned long)((pte_val(x) >> PTE_SHIFT)))
-#define pte_page(x)		(mem_map+pte_pagenr(x))
+#define pte_pfn(x)		((unsigned long)((pte_val(x) >> PTE_SHIFT)))
+#define pte_page(x)		pfn_to_page(pte_pfn(x))
 
 #define pmd_set(pmdp, ptep) 	(pmd_val(*(pmdp)) = (__ba_to_bpn(ptep)))
 #define pmd_none(pmd)		(!pmd_val(pmd))

include/asm-ppc64/thread_info.h

@@ -65,6 +65,8 @@ static inline struct thread_info *current_thread_info(void)
 
 #endif /* __ASSEMBLY__ */
 
+#define PREEMPT_ACTIVE		0x4000000
+
 /*
  * thread information flag bit numbers
  */