From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 28 Nov 2011 23:51:05 +0000 (+1100)
Subject: Merge remote-tracking branch 'arm-lpae/for-next'
X-Git-Tag: next-20111129~87
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=990d66d4fd72b4eb806edcfda712e6bdc6ce931f;p=karo-tx-linux.git

Merge remote-tracking branch 'arm-lpae/for-next'

Conflicts:
	arch/arm/include/asm/pgalloc.h
	arch/arm/include/asm/pgtable.h
	arch/arm/include/asm/tlb.h
	arch/arm/mm/ioremap.c
---

990d66d4fd72b4eb806edcfda712e6bdc6ce931f
diff --cc arch/arm/include/asm/pgtable.h
index a24a2b8feb92,aec18abf4e6b..0542166129f3
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@@ -22,9 -22,14 +22,13 @@@
  
  #include <asm-generic/pgtable-nopud.h>
  #include <asm/memory.h>
 -#include <mach/vmalloc.h>
  #include <asm/pgtable-hwdef.h>
  
+ #ifdef CONFIG_ARM_LPAE
+ #include <asm/pgtable-3level.h>
+ #else
  #include <asm/pgtable-2level.h>
+ #endif
  
  /*
   * Just any arbitrary offset to the start of the vmalloc VM area: the
diff --cc arch/arm/mm/ioremap.c
index 12c7ad215ce7,d1f78bacb015..80632e8d7538
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@@ -194,7 -208,14 +202,8 @@@ void __iomem * __arm_ioremap_pfn_caller
  	 */
  	if (pfn >= 0x100000 && (__pfn_to_phys(pfn) & ~SUPERSECTION_MASK))
  		return NULL;
+ #endif
  
 -	/*
 -	 * Don't allow RAM to be mapped - this causes problems with ARMv6+
 -	 */
 -	if (WARN_ON(pfn_valid(pfn)))
 -		return NULL;
 -
  	type = get_mem_type(mtype);
  	if (!type)
  		return NULL;
@@@ -329,34 -322,28 +338,34 @@@ __arm_ioremap_exec(unsigned long phys_a
  void __iounmap(volatile void __iomem *io_addr)
  {
  	void *addr = (void *)(PAGE_MASK & (unsigned long)io_addr);
 -#if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE)
 -	struct vm_struct **p, *tmp;
 +	struct vm_struct *vm;
  
 -	/*
 -	 * If this is a section based mapping we need to handle it
 -	 * specially as the VM subsystem does not know how to handle
 -	 * such a beast. We need the lock here b/c we need to clear
 -	 * all the mappings before the area can be reclaimed
 -	 * by someone else.
 -	 */
 -	write_lock(&vmlist_lock);
 -	for (p = &vmlist ; (tmp = *p) ; p = &tmp->next) {
 -		if ((tmp->flags & VM_IOREMAP) && (tmp->addr == addr)) {
 -			if (tmp->flags & VM_ARM_SECTION_MAPPING) {
 -				unmap_area_sections((unsigned long)tmp->addr,
 -						    tmp->size);
 -			}
 +	read_lock(&vmlist_lock);
 +	for (vm = vmlist; vm; vm = vm->next) {
 +		if (vm->addr > addr)
 +			break;
 +		if (!(vm->flags & VM_IOREMAP))
 +			continue;
 +		/* If this is a static mapping we must leave it alone */
 +		if ((vm->flags & VM_ARM_STATIC_MAPPING) &&
 +		    (vm->addr <= addr) && (vm->addr + vm->size > addr)) {
 +			read_unlock(&vmlist_lock);
 +			return;
 +		}
- #ifndef CONFIG_SMP
++#if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE)
 +		/*
 +		 * If this is a section based mapping we need to handle it
 +		 * specially as the VM subsystem does not know how to handle
 +		 * such a beast.
 +		 */
 +		if ((vm->addr == addr) &&
 +		    (vm->flags & VM_ARM_SECTION_MAPPING)) {
 +			unmap_area_sections((unsigned long)vm->addr, vm->size);
  			break;
  		}
 -	}
 -	write_unlock(&vmlist_lock);
  #endif
 +	}
 +	read_unlock(&vmlist_lock);
  
  	vunmap(addr);
  }