22 files changed, 364 insertions, 64 deletions
diff --git a/arch/x86/mm/pageattr-test.c b/arch/x86/mm/pageattr-test.c
index d4aa503caaa..e1d10690921 100644
--- a/arch/x86/mm/pageattr-test.c
+++ b/arch/x86/mm/pageattr-test.c
@@ -32,7 +32,7 @@ enum {
 	GPS			= (1<<30)
 };
 
-#define PAGE_TESTBIT	__pgprot(_PAGE_UNUSED1)
+#define PAGE_CPA_TEST	__pgprot(_PAGE_CPA_TEST)
 
 static int pte_testbit(pte_t pte)
 {
@@ -118,6 +118,7 @@ static int pageattr_test(void)
 	unsigned int level;
 	int i, k;
 	int err;
+	unsigned long test_addr;
 
 	if (print)
 		printk(KERN_INFO "CPA self-test:\n");
@@ -172,7 +173,8 @@ static int pageattr_test(void)
 			continue;
 		}
 
-		err = change_page_attr_set(addr[i], len[i], PAGE_TESTBIT);
+		test_addr = addr[i];
+		err = change_page_attr_set(&test_addr, len[i], PAGE_CPA_TEST, 0);
 		if (err < 0) {
 			printk(KERN_ERR "CPA %d failed %d\n", i, err);
 			failed++;
@@ -204,7 +206,8 @@ static int pageattr_test(void)
 			failed++;
 			continue;
 		}
-		err = change_page_attr_clear(addr[i], len[i], PAGE_TESTBIT);
+		test_addr = addr[i];
+		err = change_page_attr_clear(&test_addr, len[i], PAGE_CPA_TEST, 0);
 		if (err < 0) {
 			printk(KERN_ERR "CPA reverting failed: %d\n", err);
 			failed++;
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 43e2f8483e4..4b6968ba086 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -25,15 +25,19 @@
  * The current flushing context - we pass it instead of 5 arguments:
  */
 struct cpa_data {
-	unsigned long	vaddr;
+	unsigned long	*vaddr;
 	pgprot_t	mask_set;
 	pgprot_t	mask_clr;
 	int		numpages;
-	int		flushtlb;
+	int		flags;
 	unsigned long	pfn;
 	unsigned	force_split : 1;
+	int		curpage;
 };
 
+#define CPA_FLUSHTLB 1
+#define CPA_ARRAY 2
+
 #ifdef CONFIG_PROC_FS
 static unsigned long direct_pages_count[PG_LEVEL_NUM];
 
@@ -190,6 +194,41 @@ static void cpa_flush_range(unsigned long start, int numpages, int cache)
 	}
 }
 
+static void cpa_flush_array(unsigned long *start, int numpages, int cache)
+{
+	unsigned int i, level;
+	unsigned long *addr;
+
+	BUG_ON(irqs_disabled());
+
+	on_each_cpu(__cpa_flush_range, NULL, 1);
+
+	if (!cache)
+		return;
+
+	/* 4M threshold */
+	if (numpages >= 1024) {
+		if (boot_cpu_data.x86_model >= 4)
+			wbinvd();
+		return;
+	}
+	/*
+	 * We only need to flush on one CPU,
+	 * clflush is a MESI-coherent instruction that
+	 * will cause all other CPUs to flush the same
+	 * cachelines:
+	 */
+	for (i = 0, addr = start; i < numpages; i++, addr++) {
+		pte_t *pte = lookup_address(*addr, &level);
+
+		/*
+		 * Only flush present addresses:
+		 */
+		if (pte && (pte_val(*pte) & _PAGE_PRESENT))
+			clflush_cache_range((void *) *addr, PAGE_SIZE);
+	}
+}
+
 /*
  * Certain areas of memory on x86 require very specific protection flags,
  * for example the BIOS area or kernel text. Callers don't always get this
@@ -398,7 +437,7 @@ try_preserve_large_page(pte_t *kpte, unsigned long address,
 		 */
 		new_pte = pfn_pte(pte_pfn(old_pte), canon_pgprot(new_prot));
 		__set_pmd_pte(kpte, address, new_pte);
-		cpa->flushtlb = 1;
+		cpa->flags |= CPA_FLUSHTLB;
 		do_split = 0;
 	}
 
@@ -584,11 +623,16 @@ out_unlock:
 
 static int __change_page_attr(struct cpa_data *cpa, int primary)
 {
-	unsigned long address = cpa->vaddr;
+	unsigned long address;
 	int do_split, err;
 	unsigned int level;
 	pte_t *kpte, old_pte;
 
+	if (cpa->flags & CPA_ARRAY)
+		address = cpa->vaddr[cpa->curpage];
+	else
+		address = *cpa->vaddr;
+
 repeat:
 	kpte = lookup_address(address, &level);
 	if (!kpte)
@@ -600,7 +644,7 @@ repeat:
 			return 0;
 		WARN(1, KERN_WARNING "CPA: called for zero pte. "
 		       "vaddr = %lx cpa->vaddr = %lx\n", address,
-		       cpa->vaddr);
+		       *cpa->vaddr);
 		return -EINVAL;
 	}
 
@@ -626,7 +670,7 @@ repeat:
 		 */
 		if (pte_val(old_pte) != pte_val(new_pte)) {
 			set_pte_atomic(kpte, new_pte);
-			cpa->flushtlb = 1;
+			cpa->flags |= CPA_FLUSHTLB;
 		}
 		cpa->numpages = 1;
 		return 0;
@@ -650,7 +694,7 @@ repeat:
 	 */
 	err = split_large_page(kpte, address);
 	if (!err) {
-		cpa->flushtlb = 1;
+		cpa->flags |= CPA_FLUSHTLB;
 		goto repeat;
 	}
 
@@ -663,6 +707,7 @@ static int cpa_process_alias(struct cpa_data *cpa)
 {
 	struct cpa_data alias_cpa;
 	int ret = 0;
+	unsigned long temp_cpa_vaddr, vaddr;
 
 	if (cpa->pfn >= max_pfn_mapped)
 		return 0;
@@ -675,16 +720,24 @@ static int cpa_process_alias(struct cpa_data *cpa)
 	 * No need to redo, when the primary call touched the direct
 	 * mapping already:
 	 */
-	if (!(within(cpa->vaddr, PAGE_OFFSET,
+	if (cpa->flags & CPA_ARRAY)
+		vaddr = cpa->vaddr[cpa->curpage];
+	else
+		vaddr = *cpa->vaddr;
+
+	if (!(within(vaddr, PAGE_OFFSET,
 		    PAGE_OFFSET + (max_low_pfn_mapped << PAGE_SHIFT))
 #ifdef CONFIG_X86_64
-		|| within(cpa->vaddr, PAGE_OFFSET + (1UL<<32),
+		|| within(vaddr, PAGE_OFFSET + (1UL<<32),
 		    PAGE_OFFSET + (max_pfn_mapped << PAGE_SHIFT))
 #endif
 	)) {
 
 		alias_cpa = *cpa;
-		alias_cpa.vaddr = (unsigned long) __va(cpa->pfn << PAGE_SHIFT);
+		temp_cpa_vaddr = (unsigned long) __va(cpa->pfn << PAGE_SHIFT);
+		alias_cpa.vaddr = &temp_cpa_vaddr;
+		alias_cpa.flags &= ~CPA_ARRAY;
+
 
 		ret = __change_page_attr_set_clr(&alias_cpa, 0);
 	}
@@ -696,7 +749,7 @@ static int cpa_process_alias(struct cpa_data *cpa)
 	 * No need to redo, when the primary call touched the high
 	 * mapping already:
 	 */
-	if (within(cpa->vaddr, (unsigned long) _text, (unsigned long) _end))
+	if (within(vaddr, (unsigned long) _text, (unsigned long) _end))
 		return 0;
 
 	/*
@@ -707,8 +760,9 @@ static int cpa_process_alias(struct cpa_data *cpa)
 		return 0;
 
 	alias_cpa = *cpa;
-	alias_cpa.vaddr =
-		(cpa->pfn << PAGE_SHIFT) + __START_KERNEL_map - phys_base;
+	temp_cpa_vaddr = (cpa->pfn << PAGE_SHIFT) + __START_KERNEL_map - phys_base;
+	alias_cpa.vaddr = &temp_cpa_vaddr;
+	alias_cpa.flags &= ~CPA_ARRAY;
 
 	/*
 	 * The high mapping range is imprecise, so ignore the return value.
@@ -728,6 +782,9 @@ static int __change_page_attr_set_clr(struct cpa_data *cpa, int checkalias)
 		 * preservation check.
 		 */
 		cpa->numpages = numpages;
+		/* for array changes, we can't use large page */
+		if (cpa->flags & CPA_ARRAY)
+			cpa->numpages = 1;
 
 		ret = __change_page_attr(cpa, checkalias);
 		if (ret)
@@ -746,7 +803,11 @@ static int __change_page_attr_set_clr(struct cpa_data *cpa, int checkalias)
 		 */
 		BUG_ON(cpa->numpages > numpages);
 		numpages -= cpa->numpages;
-		cpa->vaddr += cpa->numpages * PAGE_SIZE;
+		if (cpa->flags & CPA_ARRAY)
+			cpa->curpage++;
+		else
+			*cpa->vaddr += cpa->numpages * PAGE_SIZE;
+
 	}
 	return 0;
 }
@@ -757,9 +818,9 @@ static inline int cache_attr(pgprot_t attr)
 		(_PAGE_PAT | _PAGE_PAT_LARGE | _PAGE_PWT | _PAGE_PCD);
 }
 
-static int change_page_attr_set_clr(unsigned long addr, int numpages,
+static int change_page_attr_set_clr(unsigned long *addr, int numpages,
 				    pgprot_t mask_set, pgprot_t mask_clr,
-				    int force_split)
+				    int force_split, int array)
 {
 	struct cpa_data cpa;
 	int ret, cache, checkalias;
@@ -774,21 +835,38 @@ static int change_page_attr_set_clr(unsigned long addr, int numpages,
 		return 0;
 
 	/* Ensure we are PAGE_SIZE aligned */
-	if (addr & ~PAGE_MASK) {
-		addr &= PAGE_MASK;
-		/*
-		 * People should not be passing in unaligned addresses:
-		 */
-		WARN_ON_ONCE(1);
+	if (!array) {
+		if (*addr & ~PAGE_MASK) {
+			*addr &= PAGE_MASK;
+			/*
+			 * People should not be passing in unaligned addresses:
+			 */
+			WARN_ON_ONCE(1);
+		}
+	} else {
+		int i;
+		for (i = 0; i < numpages; i++) {
+			if (addr[i] & ~PAGE_MASK) {
+				addr[i] &= PAGE_MASK;
+				WARN_ON_ONCE(1);
+			}
+		}
 	}
 
+	/* Must avoid aliasing mappings in the highmem code */
+	kmap_flush_unused();
+
 	cpa.vaddr = addr;
 	cpa.numpages = numpages;
 	cpa.mask_set = mask_set;
 	cpa.mask_clr = mask_clr;
-	cpa.flushtlb = 0;
+	cpa.flags = 0;
+	cpa.curpage = 0;
 	cpa.force_split = force_split;
 
+	if (array)
+		cpa.flags |= CPA_ARRAY;
+
 	/* No alias checking for _NX bit modifications */
 	checkalias = (pgprot_val(mask_set) | pgprot_val(mask_clr)) != _PAGE_NX;
 
@@ -797,7 +875,7 @@ static int change_page_attr_set_clr(unsigned long addr, int numpages,
 	/*
 	 * Check whether we really changed something:
 	 */
-	if (!cpa.flushtlb)
+	if (!(cpa.flags & CPA_FLUSHTLB))
 		goto out;
 
 	/*
@@ -812,9 +890,12 @@ static int change_page_attr_set_clr(unsigned long addr, int numpages,
 	 * error case we fall back to cpa_flush_all (which uses
 	 * wbindv):
 	 */
-	if (!ret && cpu_has_clflush)
-		cpa_flush_range(addr, numpages, cache);
-	else
+	if (!ret && cpu_has_clflush) {
+		if (cpa.flags & CPA_ARRAY)
+			cpa_flush_array(addr, numpages, cache);
+		else
+			cpa_flush_range(*addr, numpages, cache);
+	} else
 		cpa_flush_all(cache);
 
 out:
@@ -823,16 +904,18 @@ out:
 	return ret;
 }
 
-static inline int change_page_attr_set(unsigned long addr, int numpages,
-				       pgprot_t mask)
+static inline int change_page_attr_set(unsigned long *addr, int numpages,
+				       pgprot_t mask, int array)
 {
-	return change_page_attr_set_clr(addr, numpages, mask, __pgprot(0), 0);
+	return change_page_attr_set_clr(addr, numpages, mask, __pgprot(0), 0,
+		array);
 }
 
-static inline int change_page_attr_clear(unsigned long addr, int numpages,
-					 pgprot_t mask)
+static inline int change_page_attr_clear(unsigned long *addr, int numpages,
+					 pgprot_t mask, int array)
 {
-	return change_page_attr_set_clr(addr, numpages, __pgprot(0), mask, 0);
+	return change_page_attr_set_clr(addr, numpages, __pgprot(0), mask, 0,
+		array);
 }
 
 int _set_memory_uc(unsigned long addr, int numpages)
@@ -840,8 +923,8 @@ int _set_memory_uc(unsigned long addr, int numpages)
 	/*
 	 * for now UC MINUS. see comments in ioremap_nocache()
 	 */
-	return change_page_attr_set(addr, numpages,
-				    __pgprot(_PAGE_CACHE_UC_MINUS));
+	return change_page_attr_set(&addr, numpages,
+				    __pgprot(_PAGE_CACHE_UC_MINUS), 0);
 }
 
 int set_memory_uc(unsigned long addr, int numpages)
@@ -857,10 +940,48 @@ int set_memory_uc(unsigned long addr, int numpages)
 }
 EXPORT_SYMBOL(set_memory_uc);
 
+int set_memory_array_uc(unsigned long *addr, int addrinarray)
+{
+	unsigned long start;
+	unsigned long end;
+	int i;
+	/*
+	 * for now UC MINUS. see comments in ioremap_nocache()
+	 */
+	for (i = 0; i < addrinarray; i++) {
+		start = __pa(addr[i]);
+		for (end = start + PAGE_SIZE; i < addrinarray - 1; end += PAGE_SIZE) {
+			if (end != __pa(addr[i + 1]))
+				break;
+			i++;
+		}
+		if (reserve_memtype(start, end, _PAGE_CACHE_UC_MINUS, NULL))
+			goto out;
+	}
+
+	return change_page_attr_set(addr, addrinarray,
+				    __pgprot(_PAGE_CACHE_UC_MINUS), 1);
+out:
+	for (i = 0; i < addrinarray; i++) {
+		unsigned long tmp = __pa(addr[i]);
+
+		if (tmp == start)
+			break;
+		for (end = tmp + PAGE_SIZE; i < addrinarray - 1; end += PAGE_SIZE) {
+			if (end != __pa(addr[i + 1]))
+				break;
+			i++;
+		}
+		free_memtype(tmp, end);
+	}
+	return -EINVAL;
+}
+EXPORT_SYMBOL(set_memory_array_uc);
+
 int _set_memory_wc(unsigned long addr, int numpages)
 {
-	return change_page_attr_set(addr, numpages,
-				    __pgprot(_PAGE_CACHE_WC));
+	return change_page_attr_set(&addr, numpages,
+				    __pgprot(_PAGE_CACHE_WC), 0);
 }
 
 int set_memory_wc(unsigned long addr, int numpages)
@@ -878,8 +999,8 @@ EXPORT_SYMBOL(set_memory_wc);
 
 int _set_memory_wb(unsigned long addr, int numpages)
 {
-	return change_page_attr_clear(addr, numpages,
-				      __pgprot(_PAGE_CACHE_MASK));
+	return change_page_attr_clear(&addr, numpages,
+				      __pgprot(_PAGE_CACHE_MASK), 0);
 }
 
 int set_memory_wb(unsigned long addr, int numpages)
@@ -890,37 +1011,57 @@ int set_memory_wb(unsigned long addr, int numpages)
 }
 EXPORT_SYMBOL(set_memory_wb);
 
+int set_memory_array_wb(unsigned long *addr, int addrinarray)
+{
+	int i;
+
+	for (i = 0; i < addrinarray; i++) {
+		unsigned long start = __pa(addr[i]);
+		unsigned long end;
+
+		for (end = start + PAGE_SIZE; i < addrinarray - 1; end += PAGE_SIZE) {
+			if (end != __pa(addr[i + 1]))
+				break;
+			i++;
+		}
+		free_memtype(start, end);
+	}
+	return change_page_attr_clear(addr, addrinarray,
+				      __pgprot(_PAGE_CACHE_MASK), 1);
+}
+EXPORT_SYMBOL(set_memory_array_wb);
+
 int set_memory_x(unsigned long addr, int numpages)
 {
-	return change_page_attr_clear(addr, numpages, __pgprot(_PAGE_NX));
+	return change_page_attr_clear(&addr, numpages, __pgprot(_PAGE_NX), 0);
 }
 EXPORT_SYMBOL(set_memory_x);
 
 int set_memory_nx(unsigned long addr, int numpages)
 {
-	return change_page_attr_set(addr, numpages, __pgprot(_PAGE_NX));
+	return change_page_attr_set(&addr, numpages, __pgprot(_PAGE_NX), 0);
 }
 EXPORT_SYMBOL(set_memory_nx);
 
 int set_memory_ro(unsigned long addr, int numpages)
 {
-	return change_page_attr_clear(addr, numpages, __pgprot(_PAGE_RW));
+	return change_page_attr_clear(&addr, numpages, __pgprot(_PAGE_RW), 0);
 }
 
 int set_memory_rw(unsigned long addr, int numpages)
 {
-	return change_page_attr_set(addr, numpages, __pgprot(_PAGE_RW));
+	return change_page_attr_set(&addr, numpages, __pgprot(_PAGE_RW), 0);
 }
 
 int set_memory_np(unsigned long addr, int numpages)
 {
-	return change_page_attr_clear(addr, numpages, __pgprot(_PAGE_PRESENT));
+	return change_page_attr_clear(&addr, numpages, __pgprot(_PAGE_PRESENT), 0);
 }
 
 int set_memory_4k(unsigned long addr, int numpages)
 {
-	return change_page_attr_set_clr(addr, numpages, __pgprot(0),
-					__pgprot(0), 1);
+	return change_page_attr_set_clr(&addr, numpages, __pgprot(0),
+					__pgprot(0), 1, 0);
 }
 
 int set_pages_uc(struct page *page, int numpages)
@@ -973,20 +1114,24 @@ int set_pages_rw(struct page *page, int numpages)
 
 static int __set_pages_p(struct page *page, int numpages)
 {
-	struct cpa_data cpa = { .vaddr = (unsigned long) page_address(page),
+	unsigned long tempaddr = (unsigned long) page_address(page);
+	struct cpa_data cpa = { .vaddr = &tempaddr,
 				.numpages = numpages,
 				.mask_set = __pgprot(_PAGE_PRESENT | _PAGE_RW),
-				.mask_clr = __pgprot(0)};
+				.mask_clr = __pgprot(0),
+				.flags = 0};
 
 	return __change_page_attr_set_clr(&cpa, 1);
 }
 
 static int __set_pages_np(struct page *page, int numpages)
 {
-	struct cpa_data cpa = { .vaddr = (unsigned long) page_address(page),
+	unsigned long tempaddr = (unsigned long) page_address(page);
+	struct cpa_data cpa = { .vaddr = &tempaddr,
 				.numpages = numpages,
 				.mask_set = __pgprot(0),
-				.mask_clr = __pgprot(_PAGE_PRESENT | _PAGE_RW)};
+				.mask_clr = __pgprot(_PAGE_PRESENT | _PAGE_RW),
+				.flags = 0};
 
 	return __change_page_attr_set_clr(&cpa, 1);
 }
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 2a50e0fa64a..f049b1d6ebd 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -514,7 +514,7 @@ void unmap_devmem(unsigned long pfn, unsigned long size, pgprot_t vma_prot)
 	free_memtype(addr, addr + size);
 }
 
-#if defined(CONFIG_DEBUG_FS)
+#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_X86_PAT)
 
 /* get Nth element of the linked list */
 static struct memtype *memtype_get_idx(loff_t pos)
@@ -598,4 +598,4 @@ static int __init pat_memtype_list_init(void)
 
 late_initcall(pat_memtype_list_init);
 
-#endif /* CONFIG_DEBUG_FS */
+#endif /* CONFIG_DEBUG_FS && CONFIG_X86_PAT */
diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h
index 4bada0e8b81..46f50753117 100644
--- a/drivers/char/agp/agp.h
+++ b/drivers/char/agp/agp.h
@@ -116,7 +116,9 @@ struct agp_bridge_driver {
 	struct agp_memory *(*alloc_by_type) (size_t, int);
 	void (*free_by_type)(struct agp_memory *);
 	void *(*agp_alloc_page)(struct agp_bridge_data *);
+	int (*agp_alloc_pages)(struct agp_bridge_data *, struct agp_memory *, size_t);
 	void (*agp_destroy_page)(void *, int flags);
+	void (*agp_destroy_pages)(struct agp_memory *);
 	int (*agp_type_to_mask_type) (struct agp_bridge_data *, int);
 	void (*chipset_flush)(struct agp_bridge_data *);
 };
@@ -277,7 +279,10 @@ int agp_generic_remove_memory(struct agp_memory *mem, off_t pg_start, int type);
 struct agp_memory *agp_generic_alloc_by_type(size_t page_count, int type);
 void agp_generic_free_by_type(struct agp_memory *curr);
 void *agp_generic_alloc_page(struct agp_bridge_data *bridge);
+int agp_generic_alloc_pages(struct agp_bridge_data *agp_bridge,
+			    struct agp_memory *memory, size_t page_count);
 void agp_generic_destroy_page(void *addr, int flags);
+void agp_generic_destroy_pages(struct agp_memory *memory);
 void agp_free_key(int key);
 int agp_num_entries(void);
 u32 agp_collect_device_status(struct agp_bridge_data *bridge, u32 mode, u32 command);
diff --git a/drivers/char/agp/alpha-agp.c b/drivers/char/agp/alpha-agp.c
index 5da89f6c6c2..5ea4da8e995 100644
--- a/drivers/char/agp/alpha-agp.c
+++ b/drivers/char/agp/alpha-agp.c
@@ -143,7 +143,9 @@ struct agp_bridge_driver alpha_core_agp_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages	= agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages	= agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index e280531843b..603a986e96a 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -386,7 +386,9 @@ static const struct agp_bridge_driver amd_irongate_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages	= agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages	= agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 7495c522d8e..2812ee2b165 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -224,7 +224,9 @@ static const struct agp_bridge_driver amd_8151_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages	= agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages	= agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
diff --git a/drivers/char/agp/ati-agp.c b/drivers/char/agp/ati-agp.c
index 6ecbcafb34b..ae2791b926b 100644
--- a/drivers/char/agp/ati-agp.c
+++ b/drivers/char/agp/ati-agp.c
@@ -418,7 +418,9 @@ static const struct agp_bridge_driver ati_generic_bridge = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages	= agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages	= agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c
index 8ca6f262ef8..453543a1f29 100644
--- a/drivers/char/agp/efficeon-agp.c
+++ b/drivers/char/agp/efficeon-agp.c
@@ -335,7 +335,9 @@ static const struct agp_bridge_driver efficeon_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages	= agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages	= agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c
index 118dbde25dc..10d6cbd7c05 100644
--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -201,14 +201,22 @@ void agp_free_memory(struct agp_memory *curr)
 		return;
 	}
 	if (curr->page_count != 0) {
-		for (i = 0; i < curr->page_count; i++) {
-			curr->memory[i] = (unsigned long)gart_to_virt(curr->memory[i]);
-			curr->bridge->driver->agp_destroy_page((void *)curr->memory[i],
-							       AGP_PAGE_DESTROY_UNMAP);
-		}
-		for (i = 0; i < curr->page_count; i++) {
-			curr->bridge->driver->agp_destroy_page((void *)curr->memory[i],
-							       AGP_PAGE_DESTROY_FREE);
+		if (curr->bridge->driver->agp_destroy_pages) {
+			curr->bridge->driver->agp_destroy_pages(curr);
+		} else {
+
+			for (i = 0; i < curr->page_count; i++) {
+				curr->memory[i] = (unsigned long)gart_to_virt(
+					curr->memory[i]);
+				curr->bridge->driver->agp_destroy_page(
+					(void *)curr->memory[i],
+					AGP_PAGE_DESTROY_UNMAP);
+			}
+			for (i = 0; i < curr->page_count; i++) {
+				curr->bridge->driver->agp_destroy_page(
+					(void *)curr->memory[i],
+					AGP_PAGE_DESTROY_FREE);
+			}
 		}
 	}
 	agp_free_key(curr->key);
@@ -264,6 +272,15 @@ struct agp_memory *agp_allocate_memory(struct agp_bridge_data *bridge,
 	if (new == NULL)
 		return NULL;
 
+	if (bridge->driver->agp_alloc_pages) {
+		if (bridge->driver->agp_alloc_pages(bridge, new, page_count)) {
+			agp_free_memory(new);
+			return NULL;
+		}
+		new->bridge = bridge;
+		return new;
+	}
+
 	for (i = 0; i < page_count; i++) {
 		void *addr = bridge->driver->agp_alloc_page(bridge);
 
@@ -1203,6 +1220,39 @@ EXPORT_SYMBOL(agp_generic_alloc_user);
  * against a maximum value.
  */
 
+int agp_generic_alloc_pages(struct agp_bridge_data *bridge, struct agp_memory *mem, size_t num_pages)
+{
+	struct page * page;
+	int i, ret = -ENOMEM;
+
+	for (i = 0; i < num_pages; i++) {
+		page = alloc_page(GFP_KERNEL | GFP_DMA32);
+		/* agp_free_memory() needs gart address */
+		if (page == NULL)
+			goto out;
+
+#ifndef CONFIG_X86
+		map_page_into_agp(page);
+#endif
+		get_page(page);
+		atomic_inc(&agp_bridge->current_memory_agp);
+
+		/* set_memory_array_uc() needs virtual address */
+		mem->memory[i] = (unsigned long)page_address(page);
+		mem->page_count++;
+	}
+
+#ifdef CONFIG_X86
+	set_memory_array_uc(mem->memory, num_pages);
+#endif
+	ret = 0;
+out:
+	for (i = 0; i < mem->page_count; i++)
+		mem->memory[i] = virt_to_gart((void *)mem->memory[i]);
+	return ret;
+}
+EXPORT_SYMBOL(agp_generic_alloc_pages);
+
 void *agp_generic_alloc_page(struct agp_bridge_data *bridge)
 {
 	struct page * page;
@@ -1219,6 +1269,37 @@ void *agp_generic_alloc_page(struct agp_bridge_data *bridge)
 }
 EXPORT_SYMBOL(agp_generic_alloc_page);
 
+void agp_generic_destroy_pages(struct agp_memory *mem)
+{
+	int i;
+	void *addr;
+	struct page *page;
+
+	if (!mem)
+		return;
+
+	for (i = 0; i < mem->page_count; i++)
+		mem->memory[i] = (unsigned long)gart_to_virt(mem->memory[i]);
+
+#ifdef CONFIG_X86
+	set_memory_array_wb(mem->memory, mem->page_count);
+#endif
+
+	for (i = 0; i < mem->page_count; i++) {
+		addr = (void *)mem->memory[i];
+		page = virt_to_page(addr);
+
+#ifndef CONFIG_X86
+		unmap_page_from_agp(page);
+#endif
+
+		put_page(page);
+		free_page((unsigned long)addr);
+		atomic_dec(&agp_bridge->current_memory_agp);
+		mem->memory[i] = 0;
+	}
+}
+EXPORT_SYMBOL(agp_generic_destroy_pages);
 
 void agp_generic_destroy_page(void *addr, int flags)
 {
diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c
index 80d7317f85c..183ac3fe44f 100644
--- a/drivers/char/agp/hp-agp.c
+++ b/drivers/char/agp/hp-agp.c
@@ -435,7 +435,9 @@ const struct agp_bridge_driver hp_zx1_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages	= agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages	= agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 	.cant_use_aperture	= true,
 };
diff --git a/drivers/char/agp/i460-agp.c b/drivers/char/agp/i460-agp.c
index e587eebebc6..10da687d131 100644
--- a/drivers/char/agp/i460-agp.c
+++ b/drivers/char/agp/i460-agp.c
@@ -575,7 +575,9 @@ const struct agp_bridge_driver intel_i460_driver = {
 	.insert_memory		= i460_insert_memory_small_io_page,
 	.remove_memory		= i460_remove_memory_small_io_page,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages	= agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages	= agp_generic_destroy_pages,
 #endif
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 016fdf0623a..043e36628d6 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -1711,7 +1711,9 @@ static const struct agp_bridge_driver intel_generic_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages        = agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages      = agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
@@ -1736,7 +1738,9 @@ static const struct agp_bridge_driver intel_810_driver = {
 	.alloc_by_type		= intel_i810_alloc_by_type,
 	.free_by_type		= intel_i810_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages        = agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages      = agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
@@ -1760,7 +1764,9 @@ static const struct agp_bridge_driver intel_815_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages        = agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages      = agp_generic_destroy_pages,
 	.agp_type_to_mask_type	= agp_generic_type_to_mask_type,
 };
 
@@ -1785,7 +1791,9 @@ static const struct agp_bridge_driver intel_830_driver = {
 	.alloc_by_type		= intel_i830_alloc_by_type,
 	.free_by_type		= intel_i810_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages        = agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages      = agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = intel_i830_type_to_mask_type,
 	.chipset_flush		= intel_i830_chipset_flush,
 };
@@ -1810,7 +1818,9 @@ static const struct agp_bridge_driver intel_820_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages        = agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages      = agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
@@ -1834,7 +1844,9 @@ static const struct agp_bridge_driver intel_830mp_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages        = agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages      = agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
@@ -1858,7 +1870,9 @@ static const struct agp_bridge_driver intel_840_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages        = agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages      = agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 };
 
@@ -1882,7 +1896,9 @@ static const struct agp_bridge_driver intel_845_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages        = agp_generic_alloc_pages,
 	.agp_destroy_page	= agp_generic_destroy_page,
+	.agp_destroy_pages      = agp_generic_destroy_pages,
 	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
 	.chipset_flush		= intel_i830_chipset_flush,
 };
@@ -1907,7 +1923,9 @@ static const struct agp_bridge_driver intel_850_driver = {
 	.alloc_by_type		= agp_generic_alloc_by_type,
 	.free_by_type		= agp_generic_free_by_type,
 	.agp_alloc_page		= agp_generic_alloc_page,
+	.agp_alloc_pages        = agp