sparc,sparc64: unify mm/

- move all sparc64/mm/ files to arch/sparc/mm/
- commonly named files are named _64.c
- add files to sparc/mm/Makefile preserving link order
- delete now unused sparc64/mm/Makefile
- sparc64 now finds mm/ in sparc

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 files changed, 0 insertions, 4738 deletions

diff --git a/arch/sparc64/mm/Makefile b/arch/sparc64/mm/Makefile
deleted file mode 100644
index 68d04c0370f..00000000000
--- a/arch/sparc64/mm/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-# Makefile for the linux Sparc64-specific parts of the memory manager.
-#
-
-EXTRA_AFLAGS := -ansi
-EXTRA_CFLAGS := -Werror
-
-obj-y    := ultra.o tlb.o tsb.o fault.o init.o generic.o
-
-obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c
deleted file mode 100644
index a9e474bf638..00000000000
--- a/arch/sparc64/mm/fault.c
+++ /dev/null
@@ -1,440 +0,0 @@
-/*
- * arch/sparc64/mm/fault.c: Page fault handlers for the 64-bit Sparc.
- *
- * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net)
- * Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz)
- */
-
-#include <asm/head.h>
-
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/signal.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/kprobes.h>
-#include <linux/kdebug.h>
-
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/openprom.h>
-#include <asm/oplib.h>
-#include <asm/uaccess.h>
-#include <asm/asi.h>
-#include <asm/lsu.h>
-#include <asm/sections.h>
-#include <asm/mmu_context.h>
-
-#ifdef CONFIG_KPROBES
-static inline int notify_page_fault(struct pt_regs *regs)
-{
-	int ret = 0;
-
-	/* kprobe_running() needs smp_processor_id() */
-	if (!user_mode(regs)) {
-		preempt_disable();
-		if (kprobe_running() && kprobe_fault_handler(regs, 0))
-			ret = 1;
-		preempt_enable();
-	}
-	return ret;
-}
-#else
-static inline int notify_page_fault(struct pt_regs *regs)
-{
-	return 0;
-}
-#endif
-
-static void __kprobes unhandled_fault(unsigned long address,
-				      struct task_struct *tsk,
-				      struct pt_regs *regs)
-{
-	if ((unsigned long) address < PAGE_SIZE) {
-		printk(KERN_ALERT "Unable to handle kernel NULL "
-		       "pointer dereference\n");
-	} else {
-		printk(KERN_ALERT "Unable to handle kernel paging request "
-		       "at virtual address %016lx\n", (unsigned long)address);
-	}
-	printk(KERN_ALERT "tsk->{mm,active_mm}->context = %016lx\n",
-	       (tsk->mm ?
-		CTX_HWBITS(tsk->mm->context) :
-		CTX_HWBITS(tsk->active_mm->context)));
-	printk(KERN_ALERT "tsk->{mm,active_mm}->pgd = %016lx\n",
-	       (tsk->mm ? (unsigned long) tsk->mm->pgd :
-		          (unsigned long) tsk->active_mm->pgd));
-	die_if_kernel("Oops", regs);
-}
-
-static void bad_kernel_pc(struct pt_regs *regs, unsigned long vaddr)
-{
-	printk(KERN_CRIT "OOPS: Bogus kernel PC [%016lx] in fault handler\n",
-	       regs->tpc);
-	printk(KERN_CRIT "OOPS: RPC [%016lx]\n", regs->u_regs[15]);
-	printk("OOPS: RPC <%pS>\n", (void *) regs->u_regs[15]);
-	printk(KERN_CRIT "OOPS: Fault was to vaddr[%lx]\n", vaddr);
-	dump_stack();
-	unhandled_fault(regs->tpc, current, regs);
-}
-
-/*
- * We now make sure that mmap_sem is held in all paths that call 
- * this. Additionally, to prevent kswapd from ripping ptes from
- * under us, raise interrupts around the time that we look at the
- * pte, kswapd will have to wait to get his smp ipi response from
- * us. vmtruncate likewise. This saves us having to get pte lock.
- */
-static unsigned int get_user_insn(unsigned long tpc)
-{
-	pgd_t *pgdp = pgd_offset(current->mm, tpc);
-	pud_t *pudp;
-	pmd_t *pmdp;
-	pte_t *ptep, pte;
-	unsigned long pa;
-	u32 insn = 0;
-	unsigned long pstate;
-
-	if (pgd_none(*pgdp))
-		goto outret;
-	pudp = pud_offset(pgdp, tpc);
-	if (pud_none(*pudp))
-		goto outret;
-	pmdp = pmd_offset(pudp, tpc);
-	if (pmd_none(*pmdp))
-		goto outret;
-
-	/* This disables preemption for us as well. */
-	__asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
-	__asm__ __volatile__("wrpr %0, %1, %%pstate"
-				: : "r" (pstate), "i" (PSTATE_IE));
-	ptep = pte_offset_map(pmdp, tpc);
-	pte = *ptep;
-	if (!pte_present(pte))
-		goto out;
-
-	pa  = (pte_pfn(pte) << PAGE_SHIFT);
-	pa += (tpc & ~PAGE_MASK);
-
-	/* Use phys bypass so we don't pollute dtlb/dcache. */
-	__asm__ __volatile__("lduwa [%1] %2, %0"
-			     : "=r" (insn)
-			     : "r" (pa), "i" (ASI_PHYS_USE_EC));
-
-out:
-	pte_unmap(ptep);
-	__asm__ __volatile__("wrpr %0, 0x0, %%pstate" : : "r" (pstate));
-outret:
-	return insn;
-}
-
-extern unsigned long compute_effective_address(struct pt_regs *, unsigned int, unsigned int);
-
-static void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
-			     unsigned int insn, int fault_code)
-{
-	siginfo_t info;
-
-	info.si_code = code;
-	info.si_signo = sig;
-	info.si_errno = 0;
-	if (fault_code & FAULT_CODE_ITLB)
-		info.si_addr = (void __user *) regs->tpc;
-	else
-		info.si_addr = (void __user *)
-			compute_effective_address(regs, insn, 0);
-	info.si_trapno = 0;
-	force_sig_info(sig, &info, current);
-}
-
-extern int handle_ldf_stq(u32, struct pt_regs *);
-extern int handle_ld_nf(u32, struct pt_regs *);
-
-static unsigned int get_fault_insn(struct pt_regs *regs, unsigned int insn)
-{
-	if (!insn) {
-		if (!regs->tpc || (regs->tpc & 0x3))
-			return 0;
-		if (regs->tstate & TSTATE_PRIV) {
-			insn = *(unsigned int *) regs->tpc;
-		} else {
-			insn = get_user_insn(regs->tpc);
-		}
-	}
-	return insn;
-}
-
-static void do_kernel_fault(struct pt_regs *regs, int si_code, int fault_code,
-			    unsigned int insn, unsigned long address)
-{
-	unsigned char asi = ASI_P;
- 
-	if ((!insn) && (regs->tstate & TSTATE_PRIV))
-		goto cannot_handle;
-
-	/* If user insn could be read (thus insn is zero), that
-	 * is fine.  We will just gun down the process with a signal
-	 * in that case.
-	 */
-
-	if (!(fault_code & (FAULT_CODE_WRITE|FAULT_CODE_ITLB)) &&
-	    (insn & 0xc0800000) == 0xc0800000) {
-		if (insn & 0x2000)
-			asi = (regs->tstate >> 24);
-		else
-			asi = (insn >> 5);
-		if ((asi & 0xf2) == 0x82) {
-			if (insn & 0x1000000) {
-				handle_ldf_stq(insn, regs);
-			} else {
-				/* This was a non-faulting load. Just clear the
-				 * destination register(s) and continue with the next
-				 * instruction. -jj
-				 */
-				handle_ld_nf(insn, regs);
-			}
-			return;
-		}
-	}
-		
-	/* Is this in ex_table? */
-	if (regs->tstate & TSTATE_PRIV) {
-		const struct exception_table_entry *entry;
-
-		entry = search_exception_tables(regs->tpc);
-		if (entry) {
-			regs->tpc = entry->fixup;
-			regs->tnpc = regs->tpc + 4;
-			return;
-		}
-	} else {
-		/* The si_code was set to make clear whether
-		 * this was a SEGV_MAPERR or SEGV_ACCERR fault.
-		 */
-		do_fault_siginfo(si_code, SIGSEGV, regs, insn, fault_code);
-		return;
-	}
-
-cannot_handle:
-	unhandled_fault (address, current, regs);
-}
-
-asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
-{
-	struct mm_struct *mm = current->mm;
-	struct vm_area_struct *vma;
-	unsigned int insn = 0;
-	int si_code, fault_code, fault;
-	unsigned long address, mm_rss;
-
-	fault_code = get_thread_fault_code();
-
-	if (notify_page_fault(regs))
-		return;
-
-	si_code = SEGV_MAPERR;
-	address = current_thread_info()->fault_address;
-
-	if ((fault_code & FAULT_CODE_ITLB) &&
-	    (fault_code & FAULT_CODE_DTLB))
-		BUG();
-
-	if (regs->tstate & TSTATE_PRIV) {
-		unsigned long tpc = regs->tpc;
-
-		/* Sanity check the PC. */
-		if ((tpc >= KERNBASE && tpc < (unsigned long) __init_end) ||
-		    (tpc >= MODULES_VADDR && tpc < MODULES_END)) {
-			/* Valid, no problems... */
-		} else {
-			bad_kernel_pc(regs, address);
-			return;
-		}
-	}
-
-	/*
-	 * If we're in an interrupt or have no user
-	 * context, we must not take the fault..
-	 */
-	if (in_atomic() || !mm)
-		goto intr_or_no_mm;
-
-	if (test_thread_flag(TIF_32BIT)) {
-		if (!(regs->tstate & TSTATE_PRIV))
-			regs->tpc &= 0xffffffff;
-		address &= 0xffffffff;
-	}
-
-	if (!down_read_trylock(&mm->mmap_sem)) {
-		if ((regs->tstate & TSTATE_PRIV) &&
-		    !search_exception_tables(regs->tpc)) {
-			insn = get_fault_insn(regs, insn);
-			goto handle_kernel_fault;
-		}
-		down_read(&mm->mmap_sem);
-	}
-
-	vma = find_vma(mm, address);
-	if (!vma)
-		goto bad_area;
-
-	/* Pure DTLB misses do not tell us whether the fault causing
-	 * load/store/atomic was a write or not, it only says that there
-	 * was no match.  So in such a case we (carefully) read the
-	 * instruction to try and figure this out.  It's an optimization
-	 * so it's ok if we can't do this.
-	 *
-	 * Special hack, window spill/fill knows the exact fault type.
-	 */
-	if (((fault_code &
-	      (FAULT_CODE_DTLB | FAULT_CODE_WRITE | FAULT_CODE_WINFIXUP)) == FAULT_CODE_DTLB) &&
-	    (vma->vm_flags & VM_WRITE) != 0) {
-		insn = get_fault_insn(regs, 0);
-		if (!insn)
-			goto continue_fault;
-		/* All loads, stores and atomics have bits 30 and 31 both set
-		 * in the instruction.  Bit 21 is set in all stores, but we
-		 * have to avoid prefetches which also have bit 21 set.
-		 */
-		if ((insn & 0xc0200000) == 0xc0200000 &&
-		    (insn & 0x01780000) != 0x01680000) {
-			/* Don't bother updating thread struct value,
-			 * because update_mmu_cache only cares which tlb
-			 * the access came from.
-			 */
-			fault_code |= FAULT_CODE_WRITE;
-		}
-	}
-continue_fault:
-
-	if (vma->vm_start <= address)
-		goto good_area;
-	if (!(vma->vm_flags & VM_GROWSDOWN))
-		goto bad_area;
-	if (!(fault_code & FAULT_CODE_WRITE)) {
-		/* Non-faulting loads shouldn't expand stack. */
-		insn = get_fault_insn(regs, insn);
-		if ((insn & 0xc0800000) == 0xc0800000) {
-			unsigned char asi;
-
-			if (insn & 0x2000)
-				asi = (regs->tstate >> 24);
-			else
-				asi = (insn >> 5);
-			if ((asi & 0xf2) == 0x82)
-				goto bad_area;
-		}
-	}
-	if (expand_stack(vma, address))
-		goto bad_area;
-	/*
-	 * Ok, we have a good vm_area for this memory access, so
-	 * we can handle it..
-	 */
-good_area:
-	si_code = SEGV_ACCERR;
-
-	/* If we took a ITLB miss on a non-executable page, catch
-	 * that here.
-	 */
-	if ((fault_code & FAULT_CODE_ITLB) && !(vma->vm_flags & VM_EXEC)) {
-		BUG_ON(address != regs->tpc);
-		BUG_ON(regs->tstate & TSTATE_PRIV);
-		goto bad_area;
-	}
-
-	if (fault_code & FAULT_CODE_WRITE) {
-		if (!(vma->vm_flags & VM_WRITE))
-			goto bad_area;
-
-		/* Spitfire has an icache which does not snoop
-		 * processor stores.  Later processors do...
-		 */
-		if (tlb_type == spitfire &&
-		    (vma->vm_flags & VM_EXEC) != 0 &&
-		    vma->vm_file != NULL)
-			set_thread_fault_code(fault_code |
-					      FAULT_CODE_BLKCOMMIT);
-	} else {
-		/* Allow reads even for write-only mappings */
-		if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
-			goto bad_area;
-	}
-
-	fault = handle_mm_fault(mm, vma, address, (fault_code & FAULT_CODE_WRITE));
-	if (unlikely(fault & VM_FAULT_ERROR)) {
-		if (fault & VM_FAULT_OOM)
-			goto out_of_memory;
-		else if (fault & VM_FAULT_SIGBUS)
-			goto do_sigbus;
-		BUG();
-	}
-	if (fault & VM_FAULT_MAJOR)
-		current->maj_flt++;
-	else
-		current->min_flt++;
-
-	up_read(&mm->mmap_sem);
-
-	mm_rss = get_mm_rss(mm);
-#ifdef CONFIG_HUGETLB_PAGE
-	mm_rss -= (mm->context.huge_pte_count * (HPAGE_SIZE / PAGE_SIZE));
-#endif
-	if (unlikely(mm_rss >
-		     mm->context.tsb_block[MM_TSB_BASE].tsb_rss_limit))
-		tsb_grow(mm, MM_TSB_BASE, mm_rss);
-#ifdef CONFIG_HUGETLB_PAGE
-	mm_rss = mm->context.huge_pte_count;
-	if (unlikely(mm_rss >
-		     mm->context.tsb_block[MM_TSB_HUGE].tsb_rss_limit))
-		tsb_grow(mm, MM_TSB_HUGE, mm_rss);
-#endif
-	return;
-
-	/*
-	 * Something tried to access memory that isn't in our memory map..
-	 * Fix it, but check if it's kernel or user first..
-	 */
-bad_area:
-	insn = get_fault_insn(regs, insn);
-	up_read(&mm->mmap_sem);
-
-handle_kernel_fault:
-	do_kernel_fault(regs, si_code, fault_code, insn, address);
-	return;
-
-/*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
-out_of_memory:
-	insn = get_fault_insn(regs, insn);
-	up_read(&mm->mmap_sem);
-	printk("VM: killing process %s\n", current->comm);
-	if (!(regs->tstate & TSTATE_PRIV))
-		do_group_exit(SIGKILL);
-	goto handle_kernel_fault;
-
-intr_or_no_mm:
-	insn = get_fault_insn(regs, 0);
-	goto handle_kernel_fault;
-
-do_sigbus:
-	insn = get_fault_insn(regs, insn);
-	up_read(&mm->mmap_sem);
-
-	/*
-	 * Send a sigbus, regardless of whether we were in kernel
-	 * or user mode.
-	 */
-	do_fault_siginfo(BUS_ADRERR, SIGBUS, regs, insn, fault_code);
-
-	/* Kernel mode? Handle exceptions or die */
-	if (regs->tstate & TSTATE_PRIV)
-		goto handle_kernel_fault;
-}
diff --git a/arch/sparc64/mm/generic.c b/arch/sparc64/mm/generic.c
deleted file mode 100644
index f362c203701..00000000000
--- a/arch/sparc64/mm/generic.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * generic.c: Generic Sparc mm routines that are not dependent upon
- *            MMU type but are Sparc specific.
- *
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
- */
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/pagemap.h>
-
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/tlbflush.h>
-
-/* Remap IO memory, the same way as remap_pfn_range(), but use
- * the obio memory space.
- *
- * They use a pgprot that sets PAGE_IO and does not check the
- * mem_map table as this is independent of normal memory.
- */
-static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte,
-				      unsigned long address,
-				      unsigned long size,
-				      unsigned long offset, pgprot_t prot,
-				      int space)
-{
-	unsigned long end;
-
-	/* clear hack bit that was used as a write_combine side-effect flag */
-	offset &= ~0x1UL;
-	address &= ~PMD_MASK;
-	end = address + size;
-	if (end > PMD_SIZE)
-		end = PMD_SIZE;
-	do {
-		pte_t entry;
-		unsigned long curend = address + PAGE_SIZE;
-		
-		entry = mk_pte_io(offset, prot, space, PAGE_SIZE);
-		if (!(address & 0xffff)) {
-			if (PAGE_SIZE < (4 * 1024 * 1024) &&
-			    !(address & 0x3fffff) &&
-			    !(offset & 0x3ffffe) &&
-			    end >= address + 0x400000) {
-				entry = mk_pte_io(offset, prot, space,
-						  4 * 1024 * 1024);
-				curend = address + 0x400000;
-				offset += 0x400000;
-			} else if (PAGE_SIZE < (512 * 1024) &&
-				   !(address & 0x7ffff) &&
-				   !(offset & 0x7fffe) &&
-				   end >= address + 0x80000) {
-				entry = mk_pte_io(offset, prot, space,
-						  512 * 1024 * 1024);
-				curend = address + 0x80000;
-				offset += 0x80000;
-			} else if (PAGE_SIZE < (64 * 1024) &&
-				   !(offset & 0xfffe) &&
-				   end >= address + 0x10000) {
-				entry = mk_pte_io(offset, prot, space,
-						  64 * 1024);
-				curend = address + 0x10000;
-				offset += 0x10000;
-			} else
-				offset += PAGE_SIZE;
-		} else
-			offset += PAGE_SIZE;
-
-		if (pte_write(entry))
-			entry = pte_mkdirty(entry);
-		do {
-			BUG_ON(!pte_none(*pte));
-			set_pte_at(mm, address, pte, entry);
-			address += PAGE_SIZE;
-			pte_val(entry) += PAGE_SIZE;
-			pte++;
-		} while (address < curend);
-	} while (address < end);
-}
-
-static inline int io_remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned long address, unsigned long size,
-	unsigned long offset, pgprot_t prot, int space)
-{
-	unsigned long end;
-
-	address &= ~PGDIR_MASK;
-	end = address + size;
-	if (end > PGDIR_SIZE)
-		end = PGDIR_SIZE;
-	offset -= address;
-	do {
-		pte_t * pte = pte_alloc_map(mm, pmd, address);
-		if (!pte)
-			return -ENOMEM;
-		io_remap_pte_range(mm, pte, address, end - address, address + offset, prot, space);
-		pte_unmap(pte);
-		address = (address + PMD_SIZE) & PMD_MASK;
-		pmd++;
-	} while (address < end);
-	return 0;
-}
-
-static inline int io_remap_pud_range(struct mm_struct *mm, pud_t * pud, unsigned long address, unsigned long size,
-	unsigned long offset, pgprot_t prot, int space)
-{
-	unsigned long end;
-
-	address &= ~PUD_MASK;
-	end = address + size;
-	if (end > PUD_SIZE)
-		end = PUD_SIZE;
-	offset -= address;
-	do {
-		pmd_t *pmd = pmd_alloc(mm, pud, address);
-		if (!pud)
-			return -ENOMEM;
-		io_remap_pmd_range(mm, pmd, address, end - address, address + offset, prot, space);
-		address = (address + PUD_SIZE) & PUD_MASK;
-		pud++;
-	} while (address < end);
-	return 0;
-}
-
-int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
-		unsigned long pfn, unsigned long size, pgprot_t prot)
-{
-	int error = 0;
-	pgd_t * dir;
-	unsigned long beg = from;
-	unsigned long end = from + size;
-	struct mm_struct *mm = vma->vm_mm;
-	int space = GET_IOSPACE(pfn);
-	unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
-	unsigned long phys_base;
-
-	phys_base = offset | (((unsigned long) space) << 32UL);
-
-	/* See comment in mm/memory.c remap_pfn_range */
-	vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP;
-	vma->vm_pgoff = phys_base >> PAGE_SHIFT;
-
-	offset -= from;
-	dir = pgd_offset(mm, from);
-	flush_cache_range(vma, beg, end);
-
-	while (from < end) {
-		pud_t *pud = pud_alloc(mm, dir, from);
-		error = -ENOMEM;
-		if (!pud)
-			break;
-		error = io_remap_pud_range(mm, pud, from, end - from, offset + from, prot, space);
-		if (error)
-			break;
-		from = (from + PGDIR_SIZE) & PGDIR_MASK;
-		dir++;
-	}
-
-	flush_tlb_range(vma, beg, end);
-	return error;
-}
diff --git a/arch/sparc64/mm/hugetlbpage.c b/arch/sparc64/mm/hugetlbpage.c
deleted file mode 100644
index f27d10369e0..00000000000
--- a/arch/sparc64/mm/hugetlbpage.c
+++ /dev/null
@@ -1,357 +0,0 @@
-/*
- * SPARC64 Huge TLB page support.
- *
- * Copyright (C) 2002, 2003, 2006 David S. Miller (davem@davemloft.net)
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/hugetlb.h>
-#include <linux/pagemap.h>
-#include <linux/slab.h>
-#include <linux/sysctl.h>
-
-#include <asm/mman.h>
-#include <asm/pgalloc.h>
-#include <asm/tlb.h>
-#include <asm/tlbflush.h>
-#include <asm/cacheflush.h>
-#include <asm/mmu_context.h>
-
-/* Slightly simplified from the non-hugepage variant because by
- * definition we don't have to worry about any page coloring stuff
- */
-#define VA_EXCLUDE_START (0x0000080000000000UL - (1UL << 32UL))
-#define VA_EXCLUDE_END   (0xfffff80000000000UL + (1UL << 32UL))
-
-static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *filp,
-							unsigned long addr,
-							unsigned long len,
-							unsigned long pgoff,
-							unsigned long flags)
-{
-	struct mm_struct *mm = current->mm;
-	struct vm_area_struct * vma;
-	unsigned long task_size = TASK_SIZE;
-	unsigned long start_addr;
-
-	if (test_thread_flag(TIF_32BIT))
-		task_size = STACK_TOP32;
-	if (unlikely(len >= VA_EXCLUDE_START))
-		return -ENOMEM;
-
-	if (len > mm->cached_hole_size) {
-	        start_addr = addr = mm->free_area_cache;
-	} else {
-	        start_addr = addr = TASK_UNMAPPED_BASE;
-	        mm->cached_hole_size = 0;
-	}
-
-	task_size -= len;
-
-full_search:
-	addr = ALIGN(addr, HPAGE_SIZE);
-
-	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
-		/* At this point:  (!vma || addr < vma->vm_end). */
-		if (addr < VA_EXCLUDE_START &&
-		    (addr + len) >= VA_EXCLUDE_START) {
-			addr = VA_EXCLUDE_END;
-			vma = find_vma(mm, VA_EXCLUDE_END);
-		}
-		if (unlikely(task_size < addr)) {
-			if (start_addr != TASK_UNMAPPED_BASE) {
-				start_addr = addr = TASK_UNMAPPED_BASE;
-				mm->cached_hole_size = 0;
-				goto full_search;
-			}
-			return -ENOMEM;
-		}
-		if (likely(!vma || addr + len <= vma->vm_start)) {
-			/*
-			 * Remember the place where we stopped the search:
-			 */
-			mm->free_area_cache = addr + len;
-			return addr;
-		}
-		if (addr + mm->cached_hole_size < vma->vm_start)
-		        mm->cached_hole_size = vma->vm_start - addr;
-
-		addr = ALIGN(vma->vm_end, HPAGE_SIZE);
-	}
-}
-
-static unsigned long
-hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
-				  const unsigned long len,
-				  const unsigned long pgoff,
-				  const unsigned long flags)
-{
-	struct vm_area_struct *vma;
-	struct mm_struct *mm = current->mm;
-	unsigned long addr = addr0;
-
-	/* This should only ever run for 32-bit processes.  */
-	BUG_ON(!test_thread_flag(TIF_32BIT));
-
-	/* check if free_area_cache is useful for us */
-	if (len <= mm->cached_hole_size) {
- 	        mm->cached_hole_size = 0;
- 		mm->free_area_cache = mm->mmap_base;
- 	}
-
-	/* either no address requested or can't fit in requested address hole */
-	addr = mm->free_area_cache & HPAGE_MASK;
-
-	/* make sure it can fit in the remaining address space */
-	if (likely(addr > len)) {
-		vma = find_vma(mm, addr-len);
-		if (!vma || addr <= vma->vm_start) {
-			/* remember the address as a hint for next time */
-			return (mm->free_area_cache = addr-len);
-		}
-	}
-
-	if (unlikely(mm->mmap_base < len))
-		goto bottomup;
-
-	addr = (mm->mmap_base-len) & HPAGE_MASK;
-
-	do {
-		/*
-		 * Lookup failure means no vma is above this address,
-		 * else if new region fits below vma->vm_start,
-		 * return with success:
-		 */
-		vma = find_vma(mm, addr);
-		if (likely(!vma || addr+len <= vma->vm_start)) {
-			/* remember the address as a hint for next time */
-			return (mm->free_area_cache = addr);
-		}
-
- 		/* remember the largest hole we saw so far */
- 		if (addr + mm->cached_hole_size < vma->vm_start)
- 		        mm->cached_hole_size = vma->vm_start - addr;
-
-		/* try just below the current vma->vm_start */
-		addr = (vma->vm_start-len) & HPAGE_MASK;
-	} while (likely(len < vma->vm_start));
-
-bottomup:
-	/*
-	 * A failed mmap() very likely causes application failure,
-	 * so fall back to the bottom-up function here. This scenario
-	 * can happen with large stack limits and large mmap()
-	 * allocations.
-	 */
-	mm->cached_hole_size = ~0UL;
-  	mm->free_area_cache = TASK_UNMAPPED_BASE;
-	addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
-	/*
-	 * Restore the topdown base:
-	 */
-	mm->free_area_cache = mm->mmap_base;
-	mm->cached_hole_size = ~0UL;
-
-	return addr;
-}
-
-unsigned long
-hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
-		unsigned long len, unsigned long pgoff, unsigned long flags)
-{
-	struct mm_struct *mm = current->mm;
-	struct vm_area_struct *vma;
-	unsigned long task_size = TASK_SIZE;
-
-	if (test_thread_flag(TIF_32BIT))
-		task_size = STACK_TOP32;
-
-	if (len & ~HPAGE_MASK)
-		return -EINVAL;
-	if (len > task_size)
-		return -ENOMEM;
-
-	if (flags & MAP_FIXED) {
-		if (prepare_hugepage_range(file, addr, len))
-			return -EINVAL;
-		return addr;
-	}
-
-	if (addr) {
-		addr = ALIGN(addr, HPAGE_SIZE);
-		vma = find_vma(mm, addr);
-		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
-			return addr;
-	}
-	if (mm->get_unmapped_area == arch_get_unmapped_area)
-		return hugetlb_get_unmapped_area_bottomup(file, addr, len,
-				pgoff, flags);
-	else
-		return hugetlb_get_unmapped_area_topdown(file, addr, len,
-				pgoff, flags);
-}
-
-pte_t *huge_pte_alloc(struct mm_struct *mm,
-			unsigned long addr, unsigned long sz)
-{
-	pgd_t *pgd;
-	pud_t *pud;
-	pmd_t *pmd;
-	pte_t *pte = NULL;
-
-	/* We must align the address, because our caller will run
-	 * set_huge_pte_at() on whatever we return, which writes out
-	 * all of the sub-ptes for the hugepage range.  So we have
-	 * to give it the first such sub-pte.
-	 */
-	addr &= HPAGE_MASK;
-
-	pgd = pgd_offset(mm, addr);
-	pud = pud_alloc(mm, pgd, addr);
-	if (pud) {
-		pmd = pmd_alloc(mm, pud, addr);
-		if (pmd)
-			pte = pte_alloc_map(mm, pmd, addr);
-	}
-	return pte;
-}
-
-pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
-{
-	pgd_t *pgd;
-	pud_t *pud;
-	pmd_t *pmd;
-	pte_t *pte = NULL;
-
-	addr &= HPAGE_MASK;
-
-	pgd = pgd_offset(mm, addr);
-	if (!pgd_none(*pgd)) {
-		pud = pud_offset(pgd, addr);
-		if (!pud_none(*pud)) {
-			pmd = pmd_offset(pud, addr);
-			if (!pmd_none(*pmd))
-				pte = pte_offset_map(pmd, addr);
-		}
-	}
-	return pte;
-}
-
-int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
-{
-	return 0;
-}
-
-void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
-		     pte_t *ptep, pte_t entry)
-{
-	int i;
-
-	if (!pte_present(*ptep) && pte_present(entry))
-		mm->context.huge_pte_count++;
-
-	addr &= HPAGE_MASK;
-	for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
-		set_pte_at(mm, addr, ptep, entry);
-		ptep++;
-		addr += PAGE_SIZE;
-		pte_val(entry) += PAGE_SIZE;
-	}
-}
-
-pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
-			      pte_t *ptep)
-{
-	pte_t entry;
-	int i;
-
-	entry = *ptep;
-	if (pte_present(entry))
-		mm->context.huge_pte_count--;
-
-	addr &= HPAGE_MASK;
-
-	for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
-		pte_clear(mm, addr, ptep);
-		addr += PAGE_SIZE;
-		ptep++;
-	}
-
-	return entry;
-}
-
-struct page *follow_huge_addr(struct mm_struct *mm,
-			      unsigned long address, int write)
-{
-	return ERR_PTR(-EINVAL);
-}
-
-int pmd_huge(pmd_t pmd)
-{
-	return 0;
-}
-
-int pud_huge(pud_t pud)
-{
-	return 0;
-}
-
-struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
-			     pmd_t *pmd, int write)
-{
-	return NULL;
-}
-
-static void context_reload(void *__data)
-{
-	struct mm_struct *mm = __data;
-
-	if (mm == current->mm)
-		load_secondary_context(mm);
-}
-
-void hugetlb_prefault_arch_hook(struct mm_struct *mm)
-{
-	struct tsb_config *tp = &mm->context.tsb_block[MM_TSB_HUGE];
-
-	if (likely(tp->tsb != NULL))
-		return;
-
-	tsb_grow(mm, MM_TSB_HUGE, 0);
-	tsb_context_switch(mm);
-	smp_tsb_sync(mm);
-
-	/* On UltraSPARC-III+ and later, configure the second half of
-	 * the Data-TLB for huge pages.
-	 */
-	if (tlb_type == cheetah_plus) {
-		unsigned long ctx;
-
-		spin_lock(&ctx_alloc_lock);
-		ctx = mm->context.sparc64_ctx_val;
-		ctx &= ~CTX_PGSZ_MASK;
-		ctx |= CTX_PGSZ_BASE << CTX_PGSZ0_SHIFT;
-		ctx |= CTX_PGSZ_HUGE << CTX_PGSZ1_SHIFT;
-
-		if (ctx != mm->context.sparc64_ctx_val) {
-			/* When changing the page size fields, we
-			 * must perform a context flush so that no
-			 * stale entries match.  This flush must
-			 * occur with the original context register
-			 * settings.
-			 */
-			do_flush_tlb_mm(mm);
-
-			/* Reload the context register of all processors
-			 * also executing in this address space.
-			 */
-			mm->context.sparc64_ctx_val = ctx;
-			on_each_cpu(context_reload, mm, 0);
-		}
-		spin_unlock(&ctx_alloc_lock);
-	}
-}
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
deleted file mode 100644
index 4bd63968400..00000000000
--- a/arch/sparc64/mm/init.c
+++ /dev/null
@@ -1,2360 +0,0 @@
-/*
- *  arch/sparc64/mm/init.c
- *
- *  Copyright (C) 1996-1999 David S. Miller (davem@caip.rutgers.edu)
- *  Copyright (C) 1997-1999 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
- 
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/mm.h>
-#include <linux/hugetlb.h>
-#include <linux/slab.h>
-#include <linux/initrd.h>
-#include <linux/swap.h>
-#include <linux/pagemap.h>
-#include <linux/poison.h>
-#include <linux/fs.h>
-#include <linux/seq_file.h>
-#include <linux/kprobes.h>
-#include <linux/cache.h>
-#include <linux/sort.h>
-#include <linux/percpu.h>
-#include <linux/lmb.h>
-#include <linux/mmzone.h>
-
-#include <asm/head.h>
-#include <asm/system.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
-#include <asm/oplib.h>
-#include <asm/iommu.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/mmu_context.h>
-#include <asm/tlbflush.h>
-#include <asm/dma.h>
-#include <asm/starfire.h>
-#include <asm/tlb.h>
-#include <asm/spitfire.h>
-#include <asm/sections.h>
-#include <asm/tsb.h>
-#include <asm/hypervisor.h>
-#include <asm/prom.h>
-#include <asm/mdesc.h>
-#include <asm/cpudata.h>
-#include <asm/irq.h>
-
-#include "init.h"
-
-unsigned long kern_linear_pte_xor[2] __read_mostly;
-
-/* A bitmap, one bit for every 256MB of physical memory.  If the bit
- * is clear, we should use a 4MB page (via kern_linear_pte_xor[0]) else
- * if set we should use a 256MB page (via kern_linear_pte_xor[1]).
- */
-unsigned long kpte_linear_bitmap[KPTE_BITMAP_BYTES / sizeof(unsigned long)];
-
-#ifndef CONFIG_DEBUG_PAGEALLOC
-/* A special kernel TSB for 4MB and 256MB linear mappings.
- * Space is allocated for this right after the trap table
- * in arch/sparc64/kernel/head.S
- */
-extern struct tsb swapper_4m_tsb[KERNEL_TSB4M_NENTRIES];
-#endif
-
-#define MAX_BANKS	32
-
-static struct linux_prom64_registers pavail[MAX_BANKS] __initdata;
-static int pavail_ents __initdata;
-
-static int cmp_p64(const void *a, const void *b)
-{
-	const struct linux_prom64_registers *x = a, *y = b;
-
-	if (x->phys_addr > y->phys_addr)
-		return 1;
-	if (x->phys_addr < y->phys_addr)
-		return -1;
-	return 0;
-}
-
-static void __init read_obp_memory(const char *property,
-				   struct linux_prom64_registers *regs,
-				   int *num_ents)
-{
-	int node = prom_finddevice("/memory");
-	int prop_size = prom_getproplen(node, property);
-	int ents, ret, i;
-
-	ents = prop_size / sizeof(struct linux_prom64_registers);
-	if (ents > MAX_BANKS) {
-		prom_printf("The machine has more %s property entries than "
-			    "this kernel can support (%d).\n",
-			    property, MAX_BANKS);
-		prom_halt();
-	}
-
-	ret = prom_getproperty(node, property, (char *) regs, prop_size);
-	if (ret == -1) {
-		prom_printf("Couldn't get %s property from /memory.\n");
-		prom_halt();
-	}
-
-	/* Sanitize what we got from the firmware, by page aligning
-	 * everything.
-	 */
-	for (i = 0; i < ents; i++) {
-		unsigned long base, size;
-
-		base = regs[i].phys_addr;
-		size = regs[i].reg_size;</