Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] xen_domu build fix
  [IA64] fixes configs and add default config for ia64 xen domU
  [IA64] Remove redundant cpu_clear() in __cpu_disable path
  [IA64] Revert "prevent ia64 from invoking irq handlers on offline CPUs"
  [IA64] bte_copy of BTE_MAX_XFER trips BUG_ON.
  [IA64] Build fix for __early_pfn_to_nid() undefined link error

arch/ia64/Kconfig

@@ -221,7 +221,11 @@ config IA64_HP_SIM
 
 config IA64_XEN_GUEST
 	bool "Xen guest"
+	select SWIOTLB
 	depends on XEN
+	help
+	  Build a kernel that runs on Xen guest domain. At this moment only
+	  16KB page size in supported.
 
 endchoice
 
@@ -479,8 +483,7 @@ config HOLES_IN_ZONE
 	default y if VIRTUAL_MEM_MAP
 
 config HAVE_ARCH_EARLY_PFN_TO_NID
-	def_bool y
-	depends on NEED_MULTIPLE_NODES
+	def_bool NUMA && SPARSEMEM
 
 config HAVE_ARCH_NODEDATA_EXTENSION
 	def_bool y

arch/ia64/include/asm/sn/bte.h

@@ -39,7 +39,7 @@
 /* BTE status register only supports 16 bits for length field */
 #define BTE_LEN_BITS (16)
 #define BTE_LEN_MASK ((1 << BTE_LEN_BITS) - 1)
-#define BTE_MAX_XFER ((1 << BTE_LEN_BITS) * L1_CACHE_BYTES)
+#define BTE_MAX_XFER (BTE_LEN_MASK << L1_CACHE_SHIFT)
 
 
 /* Define hardware */

arch/ia64/kernel/smpboot.c

@@ -736,14 +736,15 @@ int __cpu_disable(void)
 			return -EBUSY;
 	}
 
+	cpu_clear(cpu, cpu_online_map);
+
 	if (migrate_platform_irqs(cpu)) {
 		cpu_set(cpu, cpu_online_map);
-		return (-EBUSY);
+		return -EBUSY;
 	}
 
 	remove_siblinginfo(cpu);
 	fixup_irqs();
-	cpu_clear(cpu, cpu_online_map);
 	local_flush_tlb_all();
 	cpu_clear(cpu, cpu_callin_map);
 	return 0;

arch/ia64/sn/kernel/bte.c

@@ -97,9 +97,10 @@ bte_result_t bte_copy(u64 src, u64 dest, u64 len, u64 mode, void *notification)
 		return BTE_SUCCESS;
 	}
 
-	BUG_ON((len & L1_CACHE_MASK) ||
-		 (src & L1_CACHE_MASK) || (dest & L1_CACHE_MASK));
-	BUG_ON(!(len < ((BTE_LEN_MASK + 1) << L1_CACHE_SHIFT)));
+	BUG_ON(len & L1_CACHE_MASK);
+	BUG_ON(src & L1_CACHE_MASK);
+	BUG_ON(dest & L1_CACHE_MASK);
+	BUG_ON(len > BTE_MAX_XFER);
 
 	/*
 	 * Start with interface corresponding to cpu number

arch/ia64/xen/Kconfig

@@ -8,8 +8,7 @@ config XEN
 	depends on PARAVIRT && MCKINLEY && IA64_PAGE_SIZE_16KB && EXPERIMENTAL
 	select XEN_XENCOMM
 	select NO_IDLE_HZ
-
-	# those are required to save/restore.
+	# followings are required to save/restore.
 	select ARCH_SUSPEND_POSSIBLE
 	select SUSPEND
 	select PM_SLEEP

arch/ia64/xen/xen_pv_ops.c

@@ -153,7 +153,7 @@ xen_post_smp_prepare_boot_cpu(void)
 	xen_setup_vcpu_info_placement();
 }
 
-static const struct pv_init_ops xen_init_ops __initdata = {
+static const struct pv_init_ops xen_init_ops __initconst = {
 	.banner = xen_banner,
 
 	.reserve_memory = xen_reserve_memory,
@@ -337,7 +337,7 @@ xen_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
 	HYPERVISOR_physdev_op(PHYSDEVOP_apic_write, &apic_op);
 }
 
-static const struct pv_iosapic_ops xen_iosapic_ops __initdata = {
+static const struct pv_iosapic_ops xen_iosapic_ops __initconst = {
 	.pcat_compat_init = xen_pcat_compat_init,
 	.__get_irq_chip = xen_iosapic_get_irq_chip,