diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 16483be18c0b8c6c33834fdb5e87ffe1da52bf70..d7ad42b77d41a2c5d4d105bcfe6dbf42c4984d7c 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -873,7 +873,8 @@ identify_siblings(struct cpuinfo_ia64 *c)
 	u16 pltid;
 	pal_logical_to_physical_t info;
 
-	if ((status = ia64_pal_logical_to_phys(-1, &info)) != PAL_STATUS_SUCCESS) {
+	status = ia64_pal_logical_to_phys(-1, &info);
+	if (status != PAL_STATUS_SUCCESS) {
 		if (status != PAL_STATUS_UNIMPLEMENTED) {
 			printk(KERN_ERR
 				"ia64_pal_logical_to_phys failed with %ld\n",
@@ -885,8 +886,13 @@ identify_siblings(struct cpuinfo_ia64 *c)
 		info.overview_cpp  = 1;
 		info.overview_tpc  = 1;
 	}
-	if ((status = ia64_sal_physical_id_info(&pltid)) != PAL_STATUS_SUCCESS) {
-		printk(KERN_ERR "ia64_sal_pltid failed with %ld\n", status);
+
+	status = ia64_sal_physical_id_info(&pltid);
+	if (status != PAL_STATUS_SUCCESS) {
+		if (status != PAL_STATUS_UNIMPLEMENTED)
+			printk(KERN_ERR
+				"ia64_sal_pltid failed with %ld\n",
+				status);
 		return;
 	}
 
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
index a2484fc1a06c43482e575888ca1991d45faf43e7..abb17a613b172f2feac86f38981c255d226864ac 100644
--- a/arch/ia64/kernel/topology.c
+++ b/arch/ia64/kernel/topology.c
@@ -27,6 +27,15 @@
 
 static struct ia64_cpu *sysfs_cpus;
 
+void arch_fix_phys_package_id(int num, u32 slot)
+{
+#ifdef CONFIG_SMP
+	if (cpu_data(num)->socket_id == -1)
+		cpu_data(num)->socket_id = slot;
+#endif
+}
+EXPORT_SYMBOL_GPL(arch_fix_phys_package_id);
+
 int arch_register_cpu(int num)
 {
 #if defined (CONFIG_ACPI) && defined (CONFIG_HOTPLUG_CPU)
diff --git a/arch/ia64/kernel/uncached.c b/arch/ia64/kernel/uncached.c
index 2a90c32024f4419fa5cc8f7d918e536c2d934d33..e77995a6e3ed35dc50d6674aba025666f0f648bb 100644
--- a/arch/ia64/kernel/uncached.c
+++ b/arch/ia64/kernel/uncached.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2001-2006 Silicon Graphics, Inc.  All rights reserved.
+ * Copyright (C) 2001-2008 Silicon Graphics, Inc.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License
@@ -177,12 +177,13 @@ static int uncached_add_chunk(struct uncached_pool *uc_pool, int nid)
  * uncached_alloc_page
  *
  * @starting_nid: node id of node to start with, or -1
+ * @n_pages: number of contiguous pages to allocate
  *
- * Allocate 1 uncached page. Allocates on the requested node. If no
- * uncached pages are available on the requested node, roundrobin starting
- * with the next higher node.
+ * Allocate the specified number of contiguous uncached pages on the
+ * the requested node. If not enough contiguous uncached pages are available
+ * on the requested node, roundrobin starting with the next higher node.
  */
-unsigned long uncached_alloc_page(int starting_nid)
+unsigned long uncached_alloc_page(int starting_nid, int n_pages)
 {
 	unsigned long uc_addr;
 	struct uncached_pool *uc_pool;
@@ -202,7 +203,8 @@ unsigned long uncached_alloc_page(int starting_nid)
 		if (uc_pool->pool == NULL)
 			continue;
 		do {
-			uc_addr = gen_pool_alloc(uc_pool->pool, PAGE_SIZE);
+			uc_addr = gen_pool_alloc(uc_pool->pool,
+						 n_pages * PAGE_SIZE);
 			if (uc_addr != 0)
 				return uc_addr;
 		} while (uncached_add_chunk(uc_pool, nid) == 0);
@@ -217,11 +219,12 @@ EXPORT_SYMBOL(uncached_alloc_page);
 /*
  * uncached_free_page
  *
- * @uc_addr: uncached address of page to free
+ * @uc_addr: uncached address of first page to free
+ * @n_pages: number of contiguous pages to free
  *
- * Free a single uncached page.
+ * Free the specified number of uncached pages.
  */
-void uncached_free_page(unsigned long uc_addr)
+void uncached_free_page(unsigned long uc_addr, int n_pages)
 {
 	int nid = paddr_to_nid(uc_addr - __IA64_UNCACHED_OFFSET);
 	struct gen_pool *pool = uncached_pools[nid].pool;
@@ -232,7 +235,7 @@ void uncached_free_page(unsigned long uc_addr)
 	if ((uc_addr & (0XFUL << 60)) != __IA64_UNCACHED_OFFSET)
 		panic("uncached_free_page invalid address %lx\n", uc_addr);
 
-	gen_pool_free(pool, uc_addr, PAGE_SIZE);
+	gen_pool_free(pool, uc_addr, n_pages * PAGE_SIZE);
 }
 EXPORT_SYMBOL(uncached_free_page);
 
diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index d52ec4e83409126647984095dd52bced8856d314..8caf42471f0d1e72d3b2adc007a9d8e8dcc76bf0 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c
@@ -168,7 +168,10 @@ setup_ptcg_sem(int max_purges, int nptcg_from)
 	static int firstcpu = 1;
 
 	if (toolatetochangeptcgsem) {
-		BUG_ON(max_purges < nptcg);
+		if (nptcg_from == NPTCG_FROM_PAL && max_purges == 0)
+			BUG_ON(1 < nptcg);
+		else
+			BUG_ON(max_purges < nptcg);
 		return;
 	}
 
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index dd28c912e84f7a0927f7b3148dee47f3c8404e72..5241e3ff50803f6048e5084f6c3135678f7465b2 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -603,6 +603,15 @@ static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid)
 		request_region(pr->throttling.address, 6, "ACPI CPU throttle");
 	}
 
+	/*
+	 * If ACPI describes a slot number for this CPU, we can use it
+	 * ensure we get the right value in the "physical id" field
+	 * of /proc/cpuinfo
+	 */
+	status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
+	if (ACPI_SUCCESS(status))
+		arch_fix_phys_package_id(pr->id, object.integer.value);
+
 	return 0;
 }
 
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index ff146c2b08fd65cb6e26498923d4df8b03ab95df..fe2a95b5d3c05e36121110de446e7309098d3f6b 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -180,7 +180,7 @@ mspec_close(struct vm_area_struct *vma)
 		my_page = vdata->maddr[index];
 		vdata->maddr[index] = 0;
 		if (!mspec_zero_block(my_page, PAGE_SIZE))
-			uncached_free_page(my_page);
+			uncached_free_page(my_page, 1);
 		else
 			printk(KERN_WARNING "mspec_close(): "
 			       "failed to zero page %ld\n", my_page);
@@ -209,7 +209,7 @@ mspec_nopfn(struct vm_area_struct *vma, unsigned long address)
 	index = (address - vdata->vm_start) >> PAGE_SHIFT;
 	maddr = (volatile unsigned long) vdata->maddr[index];
 	if (maddr == 0) {
-		maddr = uncached_alloc_page(numa_node_id());
+		maddr = uncached_alloc_page(numa_node_id(), 1);
 		if (maddr == 0)
 			return NOPFN_OOM;
 
@@ -218,7 +218,7 @@ mspec_nopfn(struct vm_area_struct *vma, unsigned long address)
 			vdata->count++;
 			vdata->maddr[index] = maddr;
 		} else {
-			uncached_free_page(maddr);
+			uncached_free_page(maddr, 1);
 			maddr = vdata->maddr[index];
 		}
 		spin_unlock(&vdata->lock);
@@ -367,7 +367,7 @@ mspec_init(void)
 				int nasid;
 				unsigned long phys;
 
-				scratch_page[nid] = uncached_alloc_page(nid);
+				scratch_page[nid] = uncached_alloc_page(nid, 1);
 				if (scratch_page[nid] == 0)
 					goto free_scratch_pages;
 				phys = __pa(scratch_page[nid]);
@@ -414,7 +414,7 @@ mspec_init(void)
  free_scratch_pages:
 	for_each_node(nid) {
 		if (scratch_page[nid] != 0)
-			uncached_free_page(scratch_page[nid]);
+			uncached_free_page(scratch_page[nid], 1);
 	}
 	return ret;
 }
@@ -431,7 +431,7 @@ mspec_exit(void)
 
 		for_each_node(nid) {
 			if (scratch_page[nid] != 0)
-				uncached_free_page(scratch_page[nid]);
+				uncached_free_page(scratch_page[nid], 1);
 		}
 	}
 }
diff --git a/drivers/misc/sgi-xp/xpc_partition.c b/drivers/misc/sgi-xp/xpc_partition.c
index 27e200ec582692e42b5d9186a15b953a3a323bf5..acd3fd4285d7c954c824286a804c48c6a75d39ce 100644
--- a/drivers/misc/sgi-xp/xpc_partition.c
+++ b/drivers/misc/sgi-xp/xpc_partition.c
@@ -211,7 +211,7 @@ xpc_rsvd_page_init(void)
 	 */
 	amos_page = xpc_vars->amos_page;
 	if (amos_page == NULL) {
-		amos_page = (AMO_t *)TO_AMO(uncached_alloc_page(0));
+		amos_page = (AMO_t *)TO_AMO(uncached_alloc_page(0, 1));
 		if (amos_page == NULL) {
 			dev_err(xpc_part, "can't allocate page of AMOs\n");
 			return NULL;
@@ -230,7 +230,7 @@ xpc_rsvd_page_init(void)
 				dev_err(xpc_part, "can't change memory "
 					"protections\n");
 				uncached_free_page(__IA64_UNCACHED_OFFSET |
-						   TO_PHYS((u64)amos_page));
+						   TO_PHYS((u64)amos_page), 1);
 				return NULL;
 			}
 		}
diff --git a/include/asm-ia64/topology.h b/include/asm-ia64/topology.h
index f2f72ef2a8974cc3496dc0fd92435626f708a7e8..32863b3bb1d3e9bdd8cba30a5eb3356b3cbbb467 100644
--- a/include/asm-ia64/topology.h
+++ b/include/asm-ia64/topology.h
@@ -116,6 +116,8 @@ void build_cpu_to_node_map(void);
 #define smt_capable() 				(smp_num_siblings > 1)
 #endif
 
+extern void arch_fix_phys_package_id(int num, u32 slot);
+
 #define pcibus_to_cpumask(bus)	(pcibus_to_node(bus) == -1 ? \
 					CPU_MASK_ALL : \
 					node_to_cpumask(pcibus_to_node(bus)) \
diff --git a/include/asm-ia64/uncached.h b/include/asm-ia64/uncached.h
index b82d923b73c1c5b6ad8d1d0599331b72440f0d3f..13d7e65ca3cce3e76bbf2346c37651ad95e01e9c 100644
--- a/include/asm-ia64/uncached.h
+++ b/include/asm-ia64/uncached.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2001-2005 Silicon Graphics, Inc.  All rights reserved.
+ * Copyright (C) 2001-2008 Silicon Graphics, Inc.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License
@@ -8,5 +8,5 @@
  * Prototypes for the uncached page allocator
  */
 
-extern unsigned long uncached_alloc_page(int nid);
-extern void uncached_free_page(unsigned long);
+extern unsigned long uncached_alloc_page(int starting_nid, int n_pages);
+extern void uncached_free_page(unsigned long uc_addr, int n_pages);
diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h
index 0e6d6b03affe13071ab3f6da6b5ffa7b369a0766..4f35a0fb4f22ac5ba6d459a45f4eb8971eb50cac 100644
--- a/include/asm-x86/topology.h
+++ b/include/asm-x86/topology.h
@@ -193,6 +193,10 @@ extern cpumask_t cpu_coregroup_map(int cpu);
 #define topology_thread_siblings(cpu)		(per_cpu(cpu_sibling_map, cpu))
 #endif
 
+static inline void arch_fix_phys_package_id(int num, u32 slot)
+{
+}
+
 struct pci_bus;
 void set_pci_bus_resources_arch_default(struct pci_bus *b);