Merge intel.com:/data/home/aegl/BK/Linus

into intel.com:/data/home/aegl/BK/linux-ia64-release-2.6.10

arch/ia64/Makefile

@@ -42,8 +42,7 @@ $(error Sorry, your compiler is too old.  GCC v2.96 is known to generate bad cod
 endif
 
 ifeq ($(GCC_VERSION),0304)
-# Workaround Itanium 1 bugs in gcc 3.4.
-#	cflags-$(CONFIG_ITANIUM)	+= -mtune=merced
+	cflags-$(CONFIG_ITANIUM)	+= -mtune=merced
 	cflags-$(CONFIG_MCKINLEY)	+= -mtune=mckinley
 endif
 

arch/ia64/ia32/ia32priv.h

@@ -559,6 +559,10 @@ struct user_regs_struct32 {
 extern int save_ia32_fpstate (struct task_struct *, struct ia32_user_i387_struct __user *);
 extern int save_ia32_fpxstate (struct task_struct *, struct ia32_user_fxsr_struct __user *);
 
+/* Prototypes for use in sys_ia32.c */
+int copy_siginfo_to_user32 (siginfo_t32 __user *to, siginfo_t *from);
+int copy_siginfo_from_user32 (siginfo_t *to, siginfo_t32 __user *from);
+
 #endif /* !CONFIG_IA32_SUPPORT */
 
 #endif /* _ASM_IA64_IA32_PRIV_H */

arch/ia64/kernel/unwind.c

@@ -1269,7 +1269,6 @@ script_new (unsigned long ip)
 {
 	struct unw_script *script, *prev, *tmp;
 	unw_hash_index_t index;
-	unsigned long flags;
 	unsigned short head;
 
 	STAT(++unw.stat.script.news);
@@ -1278,13 +1277,9 @@ script_new (unsigned long ip)
 	 * Can't (easily) use cmpxchg() here because of ABA problem
 	 * that is intrinsic in cmpxchg()...
 	 */
-	spin_lock_irqsave(&unw.lock, flags);
-	{
 	head = unw.lru_head;
 	script = unw.cache + head;
 	unw.lru_head = script->lru_chain;
-	}
-	spin_unlock(&unw.lock);
 
 	/*
 	 * We'd deadlock here if we interrupted a thread that is holding a read lock on
@@ -1295,8 +1290,6 @@ script_new (unsigned long ip)
 	if (!write_trylock(&script->lock))
 		return NULL;
 
-	spin_lock(&unw.lock);
-	{
 	/* re-insert script at the tail of the LRU chain: */
 	unw.cache[unw.lru_tail].lru_chain = head;
 	unw.lru_tail = head;
@@ -1330,8 +1323,6 @@ script_new (unsigned long ip)
 	script->ip = ip;	/* set new IP while we're holding the locks */
 
 	STAT(if (script->coll_chain < UNW_CACHE_SIZE) ++unw.stat.script.collisions);
-	}
-	spin_unlock_irqrestore(&unw.lock, flags);
 
 	script->flags = 0;
 	script->hint = 0;
@@ -1830,6 +1821,7 @@ find_save_locs (struct unw_frame_info *info)
 {
 	int have_write_lock = 0;
 	struct unw_script *scr;
+	unsigned long flags = 0;
 
 	if ((info->ip & (local_cpu_data->unimpl_va_mask | 0xf)) || info->ip < TASK_SIZE) {
 		/* don't let obviously bad addresses pollute the cache */
@@ -1841,8 +1833,10 @@ find_save_locs (struct unw_frame_info *info)
 
 	scr = script_lookup(info);
 	if (!scr) {
+		spin_lock_irqsave(&unw.lock, flags);
 		scr = build_script(info);
 		if (!scr) {
+			spin_unlock_irqrestore(&unw.lock, flags);
 			UNW_DPRINT(0,
 				   "unwind.%s: failed to locate/build unwind script for ip %lx\n",
 				   __FUNCTION__, info->ip);
@@ -1855,9 +1849,10 @@ find_save_locs (struct unw_frame_info *info)
 
 	run_script(scr, info);
 
-	if (have_write_lock)
+	if (have_write_lock) {
 		write_unlock(&scr->lock);
-	else
+		spin_unlock_irqrestore(&unw.lock, flags);
+	} else
 		read_unlock(&scr->lock);
 	return 0;
 }

arch/ia64/lib/swiotlb.c

@@ -305,9 +305,16 @@ swiotlb_alloc_coherent (struct device *hwdev, size_t size, dma_addr_t *dma_handl
 	flags |= GFP_DMA;
 
 	ret = (void *)__get_free_pages(flags, get_order(size));
-	if (!ret)
+	if (!ret) {
+		 /* DMA_FROM_DEVICE is to avoid the memcpy in map_single */
+		dma_addr_t handle;
+		handle = swiotlb_map_single(NULL, NULL, size, DMA_FROM_DEVICE);
+		if (dma_mapping_error(handle))
 			return NULL;
 
+		ret = phys_to_virt(handle);
+	}
+
 	memset(ret, 0, size);
 	dev_addr = virt_to_phys(ret);
 	if (address_needs_mapping(hwdev,dev_addr))
@@ -319,7 +326,12 @@ swiotlb_alloc_coherent (struct device *hwdev, size_t size, dma_addr_t *dma_handl
 void
 swiotlb_free_coherent (struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
 {
+	if (!(vaddr >= (void *)io_tlb_start
+                    && vaddr < (void *)io_tlb_end))
 		free_pages((unsigned long) vaddr, get_order(size));
+	else
+		/* DMA_TO_DEVICE to avoid memcpy in unmap_single */
+		swiotlb_unmap_single (hwdev, dma_handle, size, DMA_TO_DEVICE);
 }
 
 static void swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)

arch/ia64/pci/pci.c

@@ -275,7 +275,7 @@ add_window (struct acpi_resource *res, void *data)
 			return AE_OK;
 
 		window = &info->controller->window[info->controller->windows++];
-		window->resource.flags |= flags;
+		window->resource.flags	= flags;
 		window->resource.start  = addr.min_address_range;
 		window->resource.end    = addr.max_address_range;
 		window->offset		= offset;