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] ioremap() should prefer WB over UC
  [IA64] Add __mca_table to the DISCARD list in gate.lds
  [IA64] Move __mca_table out of the __init section
  [IA64] simplify some condition checks in iosapic_check_gsi_range
  [IA64] correct some messages and fixes some minor things
  [IA64-SGI] fix for-loop in sn_hwperf_geoid_to_cnode()
  [IA64-SGI] sn_hwperf use of num_online_cpus()
  [IA64] optimize flush_tlb_range on large numa box
  [IA64] lazy_mmu_prot_update needs to be aware of huge pages

3 files changed, 17 insertions, 9 deletions

diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 2ef1151cde90..cafa8776a53d 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -109,6 +109,7 @@ lazy_mmu_prot_update (pte_t pte)
 {
         unsigned long addr;
         struct page *page;
+        unsigned long order;
 
         if (!pte_exec(pte))
                 return;                         /* not an executable page... */
@@ -119,7 +120,12 @@ lazy_mmu_prot_update (pte_t pte)
         if (test_bit(PG_arch_1, &page->flags))
                 return;                         /* i-cache is already coherent with d-cache */
 
-        flush_icache_range(addr, addr + PAGE_SIZE);
+        if (PageCompound(page)) {
+                order = (unsigned long) (page[1].lru.prev);
+                flush_icache_range(addr, addr + (1UL << order << PAGE_SHIFT));
+        }
+        else
+                flush_icache_range(addr, addr + PAGE_SIZE);
         set_bit(PG_arch_1, &page->flags);       /* mark page as clean */
 }
 
diff --git a/arch/ia64/mm/ioremap.c b/arch/ia64/mm/ioremap.c
index 62328621f99c..643ccc6960ce 100644
--- a/arch/ia64/mm/ioremap.c
+++ b/arch/ia64/mm/ioremap.c
@@ -21,12 +21,12 @@ __ioremap (unsigned long offset, unsigned long size)
 void __iomem *
 ioremap (unsigned long offset, unsigned long size)
 {
-        if (efi_mem_attribute_range(offset, size, EFI_MEMORY_UC))
-                return __ioremap(offset, size);
-
         if (efi_mem_attribute_range(offset, size, EFI_MEMORY_WB))
                 return phys_to_virt(offset);
 
+        if (efi_mem_attribute_range(offset, size, EFI_MEMORY_UC))
+                return __ioremap(offset, size);
+
         /*
          * Someday this should check ACPI resources so we
          * can do the right thing for hot-plugged regions.
diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index 6a4eec9113e8..4dbbca0b5e9c 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c
@@ -156,17 +156,19 @@ flush_tlb_range (struct vm_area_struct *vma, unsigned long start,
                 nbits = purge.max_bits;
         start &= ~((1UL << nbits) - 1);
 
-# ifdef CONFIG_SMP
-        platform_global_tlb_purge(mm, start, end, nbits);
-# else
         preempt_disable();
+#ifdef CONFIG_SMP
+        if (mm != current->active_mm || cpus_weight(mm->cpu_vm_mask) != 1) {
+                platform_global_tlb_purge(mm, start, end, nbits);
+                preempt_enable();
+                return;
+        }
+#endif
         do {
                 ia64_ptcl(start, (nbits<<2));
                 start += (1UL << nbits);
         } while (start < end);
         preempt_enable();
-# endif
-
         ia64_srlz_i();                  /* srlz.i implies srlz.d */
 }
 EXPORT_SYMBOL(flush_tlb_range);