3 files changed, 5 insertions, 35 deletions
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index d96a14ffceeb..fdc93dd12c3e 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -232,19 +232,7 @@ static void __init taint_real_pages(void)
 	}
 }
 
-static void map_high_region(unsigned long start_pfn, unsigned long end_pfn)
-{
-	unsigned long tmp;
-
-#ifdef CONFIG_DEBUG_HIGHMEM
-	printk("mapping high region %08lx - %08lx\n", start_pfn, end_pfn);
-#endif
-
-	for (tmp = start_pfn; tmp < end_pfn; tmp++)
-		free_highmem_page(pfn_to_page(tmp));
-}
-
-void __init mem_init(void)
+void __init arch_mm_preinit(void)
 {
 	int i;
 
@@ -274,23 +262,6 @@ void __init mem_init(void)
 	memset(sparc_valid_addr_bitmap, 0, i << 2);
 
 	taint_real_pages();
-
-	max_mapnr = last_valid_pfn - pfn_base;
-	high_memory = __va(max_low_pfn << PAGE_SHIFT);
-	memblock_free_all();
-
-	for (i = 0; sp_banks[i].num_bytes != 0; i++) {
-		unsigned long start_pfn = sp_banks[i].base_addr >> PAGE_SHIFT;
-		unsigned long end_pfn = (sp_banks[i].base_addr + sp_banks[i].num_bytes) >> PAGE_SHIFT;
-
-		if (end_pfn <= highstart_pfn)
-			continue;
-
-		if (start_pfn < highstart_pfn)
-			start_pfn = highstart_pfn;
-
-		map_high_region(start_pfn, end_pfn);
-	}
 }
 
 void sparc_flush_page_to_ram(struct page *page)
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 05882bca5b73..760818950464 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2505,10 +2505,6 @@ static void __init register_page_bootmem_info(void)
 }
 void __init mem_init(void)
 {
-	high_memory = __va(last_valid_pfn << PAGE_SHIFT);
-
-	memblock_free_all();
-
 	/*
 	 * Must be done after boot memory is put on freelist, because here we
 	 * might set fields in deferred struct pages that have not yet been
diff --git a/arch/sparc/mm/tlb.c b/arch/sparc/mm/tlb.c
index 8648a50afe88..a35ddcca5e76 100644
--- a/arch/sparc/mm/tlb.c
+++ b/arch/sparc/mm/tlb.c
@@ -52,8 +52,10 @@ out:
 
 void arch_enter_lazy_mmu_mode(void)
 {
-	struct tlb_batch *tb = this_cpu_ptr(&tlb_batch);
+	struct tlb_batch *tb;
 
+	preempt_disable();
+	tb = this_cpu_ptr(&tlb_batch);
 	tb->active = 1;
 }
 
@@ -64,6 +66,7 @@ void arch_leave_lazy_mmu_mode(void)
 	if (tb->tlb_nr)
 		flush_tlb_pending();
 	tb->active = 0;
+	preempt_enable();
 }
 
 static void tlb_batch_add_one(struct mm_struct *mm, unsigned long vaddr,