direct_remap_pfn_range() takes a vm_area_struct rather than

an mm_struct. Also it sets VM_RESERVED and VM_IO, just like
generic remap_pfn_range() in mm/memory.c.

Signed-off-by: Keir Fraser <keir@xensource.com>

linux-2.6-xen-sparse/arch/xen/i386/mm/ioremap.c

@@ -45,12 +45,12 @@ static int direct_remap_area_pte_fn(pte_t *pte,
 	return 0;
 }
 
-int direct_remap_pfn_range(struct mm_struct *mm,
-			    unsigned long address, 
-			    unsigned long mfn,
-			    unsigned long size, 
-			    pgprot_t prot,
-			    domid_t  domid)
+static int __direct_remap_pfn_range(struct mm_struct *mm,
+				    unsigned long address, 
+				    unsigned long mfn,
+				    unsigned long size, 
+				    pgprot_t prot,
+				    domid_t  domid)
 {
 	int i;
 	unsigned long start_address;
@@ -98,6 +98,20 @@ int direct_remap_pfn_range(struct mm_struct *mm,
 	return 0;
 }
 
+int direct_remap_pfn_range(struct vm_area_struct *vma,
+			   unsigned long address, 
+			   unsigned long mfn,
+			   unsigned long size, 
+			   pgprot_t prot,
+			   domid_t  domid)
+{
+	/* Same as remap_pfn_range(). */
+	vma->vm_flags |= VM_IO | VM_RESERVED;
+
+	return __direct_remap_pfn_range(
+		vma->vm_mm, address, mfn, size, prot, domid);
+}
+
 EXPORT_SYMBOL(direct_remap_pfn_range);
 
 
@@ -221,8 +235,9 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
 #ifdef __x86_64__
 	flags |= _PAGE_USER;
 #endif
-	if (direct_remap_pfn_range(&init_mm, (unsigned long) addr, phys_addr>>PAGE_SHIFT,
-				    size, __pgprot(flags), domid)) {
+	if (__direct_remap_pfn_range(&init_mm, (unsigned long)addr,
+				     phys_addr>>PAGE_SHIFT,
+				     size, __pgprot(flags), domid)) {
 		vunmap((void __force *) addr);
 		return NULL;
 	}

linux-2.6-xen-sparse/arch/xen/i386/pci/i386.c

@@ -295,7 +295,7 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 	/* Write-combine setting is ignored, it is changed via the mtrr
 	 * interfaces on this platform.
 	 */
-	if (direct_remap_pfn_range(vma->vm_mm, vma->vm_start, vma->vm_pgoff,
+	if (direct_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
 				   vma->vm_end - vma->vm_start,
 				   vma->vm_page_prot, DOMID_IO))
 		return -EAGAIN;

linux-2.6-xen-sparse/arch/xen/kernel/devmem.c

@@ -90,22 +90,10 @@ out:
 
 static int mmap_mem(struct file * file, struct vm_area_struct * vma)
 {
-	int uncached;
-
-	uncached = uncached_access(file);
-	if (uncached)
+	if (uncached_access(file))
 		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
-	/* Don't try to swap out physical pages.. */
-	vma->vm_flags |= VM_RESERVED;
-
-	/*
-	 * Don't dump addresses that are not real memory to a core file.
-	 */
-	if (uncached)
-		vma->vm_flags |= VM_IO;
-
-	if (direct_remap_pfn_range(vma->vm_mm, vma->vm_start, vma->vm_pgoff,
+	if (direct_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
 				   vma->vm_end - vma->vm_start,
 				   vma->vm_page_prot, DOMID_IO))
 		return -EAGAIN;

linux-2.6-xen-sparse/drivers/xen/privcmd/privcmd.c

@@ -130,12 +130,12 @@ static int privcmd_ioctl(struct inode *inode, struct file *file,
                 if ( (msg[j].va + (msg[j].npages<<PAGE_SHIFT)) > vma->vm_end )
                     return -EINVAL;
 
-                if ( (rc = direct_remap_pfn_range(vma->vm_mm, 
-                                                   msg[j].va&PAGE_MASK, 
-                                                   msg[j].mfn, 
-                                                   msg[j].npages<<PAGE_SHIFT, 
-                                                   vma->vm_page_prot,
-                                                   mmapcmd.dom)) < 0 )
+                if ( (rc = direct_remap_pfn_range(vma,
+                                                  msg[j].va&PAGE_MASK, 
+                                                  msg[j].mfn, 
+                                                  msg[j].npages<<PAGE_SHIFT, 
+                                                  vma->vm_page_prot,
+                                                  mmapcmd.dom)) < 0 )
                     return rc;
             }
         }

linux-2.6-xen-sparse/include/asm-xen/asm-i386/pgtable.h

@@ -460,7 +460,7 @@ void make_pages_writable(void *va, unsigned int nr);
 #define kern_addr_valid(addr)	(1)
 #endif /* !CONFIG_DISCONTIGMEM */
 
-int direct_remap_pfn_range(struct mm_struct *mm,
+int direct_remap_pfn_range(struct vm_area_struct *vma,
                             unsigned long address, 
                             unsigned long mfn,
                             unsigned long size, 
@@ -474,10 +474,10 @@ int touch_pte_range(struct mm_struct *mm,
                     unsigned long size);
 
 #define io_remap_page_range(vma,from,phys,size,prot) \
-direct_remap_pfn_range(vma->vm_mm,from,phys>>PAGE_SHIFT,size,prot,DOMID_IO)
+direct_remap_pfn_range(vma,from,(phys)>>PAGE_SHIFT,size,prot,DOMID_IO)
 
 #define io_remap_pfn_range(vma,from,pfn,size,prot) \
-direct_remap_pfn_range(vma->vm_mm,from,pfn,size,prot,DOMID_IO)
+direct_remap_pfn_range(vma,from,pfn,size,prot,DOMID_IO)
 
 #define MK_IOSPACE_PFN(space, pfn)	(pfn)
 #define GET_IOSPACE(pfn)		0

linux-2.6-xen-sparse/include/asm-xen/asm-x86_64/pgtable.h

@@ -526,7 +526,7 @@ extern int kern_addr_valid(unsigned long addr);
 
 #define DOMID_LOCAL (0xFFFFU)
 
-int direct_remap_pfn_range(struct mm_struct *mm,
+int direct_remap_pfn_range(struct vm_area_struct *vma,
                             unsigned long address,
                             unsigned long mfn,
                             unsigned long size,
@@ -542,10 +542,10 @@ int touch_pte_range(struct mm_struct *mm,
                     unsigned long size);
 
 #define io_remap_page_range(vma, vaddr, paddr, size, prot)		\
-		direct_remap_pfn_range((vma)->vm_mm,vaddr,paddr>>PAGE_SHIFT,size,prot,DOMID_IO)
+		direct_remap_pfn_range(vma,vaddr,(paddr)>>PAGE_SHIFT,size,prot,DOMID_IO)
 
 #define io_remap_pfn_range(vma, vaddr, pfn, size, prot)		\
-		direct_remap_pfn_range((vma)->vm_mm,vaddr,pfn,size,prot,DOMID_IO)
+		direct_remap_pfn_range(vma,vaddr,pfn,size,prot,DOMID_IO)
 
 #define MK_IOSPACE_PFN(space, pfn)	(pfn)
 #define GET_IOSPACE(pfn)		0