Merge branch 'x86/core' into tracing/ftrace

Semantic merge:

  kernel/trace/trace_functions_graph.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

6 files changed, 43 insertions, 29 deletions

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 6d63e3d1253d..15219e0d1243 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -134,8 +134,8 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
 {
         unsigned long page_size_mask = 0;
         unsigned long start_pfn, end_pfn;
+        unsigned long ret = 0;
         unsigned long pos;
-        unsigned long ret;
 
         struct map_range mr[NR_RANGE_MR];
         int nr_range, i;
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index d7f5060ab21c..749559ed80f5 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -806,11 +806,6 @@ static unsigned long __init setup_node_bootmem(int nodeid,
 {
         unsigned long bootmap_size;
 
-        if (start_pfn > max_low_pfn)
-                return bootmap;
-        if (end_pfn > max_low_pfn)
-                end_pfn = max_low_pfn;
-
         /* don't touch min_low_pfn */
         bootmap_size = init_bootmem_node(NODE_DATA(nodeid),
                                          bootmap >> PAGE_SHIFT,
@@ -843,13 +838,23 @@ void __init setup_bootmem_allocator(void)
                  max_pfn_mapped<<PAGE_SHIFT);
         printk(KERN_INFO "  low ram: 0 - %08lx\n", max_low_pfn<<PAGE_SHIFT);
 
+        for_each_online_node(nodeid) {
+                 unsigned long start_pfn, end_pfn;
+
 #ifdef CONFIG_NEED_MULTIPLE_NODES
-        for_each_online_node(nodeid)
-                bootmap = setup_node_bootmem(nodeid, node_start_pfn[nodeid],
-                                        node_end_pfn[nodeid], bootmap);
+                start_pfn = node_start_pfn[nodeid];
+                end_pfn = node_end_pfn[nodeid];
+                if (start_pfn > max_low_pfn)
+                        continue;
+                if (end_pfn > max_low_pfn)
+                        end_pfn = max_low_pfn;
 #else
-        bootmap = setup_node_bootmem(0, 0, max_low_pfn, bootmap);
+                start_pfn = 0;
+                end_pfn = max_low_pfn;
 #endif
+                bootmap = setup_node_bootmem(nodeid, start_pfn, end_pfn,
+                                                 bootmap);
+        }
 
         after_bootmem = 1;
 }
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 66d6be85df82..1753e8020df6 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -85,7 +85,7 @@ early_param("gbpages", parse_direct_gbpages_on);
 pteval_t __supported_pte_mask __read_mostly = ~_PAGE_IOMAP;
 EXPORT_SYMBOL_GPL(__supported_pte_mask);
 
-static int do_not_nx __cpuinitdata;
+static int disable_nx __cpuinitdata;
 
 /*
  * noexec=on|off
@@ -100,9 +100,9 @@ static int __init nonx_setup(char *str)
                 return -EINVAL;
         if (!strncmp(str, "on", 2)) {
                 __supported_pte_mask |= _PAGE_NX;
-                do_not_nx = 0;
+                disable_nx = 0;
         } else if (!strncmp(str, "off", 3)) {
-                do_not_nx = 1;
+                disable_nx = 1;
                 __supported_pte_mask &= ~_PAGE_NX;
         }
         return 0;
@@ -114,7 +114,7 @@ void __cpuinit check_efer(void)
         unsigned long efer;
 
         rdmsrl(MSR_EFER, efer);
-        if (!(efer & EFER_NX) || do_not_nx)
+        if (!(efer & EFER_NX) || disable_nx)
                 __supported_pte_mask &= ~_PAGE_NX;
 }
 
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 62773abdf088..aca924a30ee6 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -87,6 +87,8 @@ bool __virt_addr_valid(unsigned long x)
                 return false;
         if (__vmalloc_start_set && is_vmalloc_addr((void *) x))
                 return false;
+        if (x >= FIXADDR_START)
+                return false;
         return pfn_valid((x - PAGE_OFFSET) >> PAGE_SHIFT);
 }
 EXPORT_SYMBOL(__virt_addr_valid);
@@ -504,13 +506,19 @@ static inline pte_t * __init early_ioremap_pte(unsigned long addr)
         return &bm_pte[pte_index(addr)];
 }
 
+static unsigned long slot_virt[FIX_BTMAPS_SLOTS] __initdata;
+
 void __init early_ioremap_init(void)
 {
         pmd_t *pmd;
+        int i;
 
         if (early_ioremap_debug)
                 printk(KERN_INFO "early_ioremap_init()\n");
 
+        for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
+                slot_virt[i] = fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
+
         pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
         memset(bm_pte, 0, sizeof(bm_pte));
         pmd_populate_kernel(&init_mm, pmd, bm_pte);
@@ -577,6 +585,7 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx)
 
 static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initdata;
 static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
+
 static int __init check_early_ioremap_leak(void)
 {
         int count = 0;
@@ -598,7 +607,8 @@ static int __init check_early_ioremap_leak(void)
 }
 late_initcall(check_early_ioremap_leak);
 
-static void __init __iomem *__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
+static void __init __iomem *
+__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
 {
         unsigned long offset, last_addr;
         unsigned int nrpages;
@@ -664,9 +674,9 @@ static void __init __iomem *__early_ioremap(unsigned long phys_addr, unsigned lo
                 --nrpages;
         }
         if (early_ioremap_debug)
-                printk(KERN_CONT "%08lx + %08lx\n", offset, fix_to_virt(idx0));
+                printk(KERN_CONT "%08lx + %08lx\n", offset, slot_virt[slot]);
 
-        prev_map[slot] = (void __iomem *)(offset + fix_to_virt(idx0));
+        prev_map[slot] = (void __iomem *)(offset + slot_virt[slot]);
         return prev_map[slot];
 }
 
@@ -734,8 +744,3 @@ void __init early_iounmap(void __iomem *addr, unsigned long size)
         }
         prev_map[slot] = NULL;
 }
-
-void __this_fixmap_does_not_exist(void)
-{
-        WARN_ON(1);
-}
diff --git a/arch/x86/mm/kmmio.c b/arch/x86/mm/kmmio.c
index 9f205030d9aa..6a518dd08a36 100644
--- a/arch/x86/mm/kmmio.c
+++ b/arch/x86/mm/kmmio.c
@@ -451,23 +451,24 @@ static void rcu_free_kmmio_fault_pages(struct rcu_head *head)
 
 static void remove_kmmio_fault_pages(struct rcu_head *head)
 {
-        struct kmmio_delayed_release *dr = container_of(
-                                                head,
-                                                struct kmmio_delayed_release,
-                                                rcu);
+        struct kmmio_delayed_release *dr =
+                container_of(head, struct kmmio_delayed_release, rcu);
         struct kmmio_fault_page *p = dr->release_list;
         struct kmmio_fault_page **prevp = &dr->release_list;
         unsigned long flags;
+
         spin_lock_irqsave(&kmmio_lock, flags);
         while (p) {
-                if (!p->count)
+                if (!p->count) {
                         list_del_rcu(&p->list);
-                else
+                        prevp = &p->release_next;
+                } else {
                         *prevp = p->release_next;
-                prevp = &p->release_next;
+                }
                 p = p->release_next;
         }
         spin_unlock_irqrestore(&kmmio_lock, flags);
+
         /* This is the real RCU destroy call. */
         call_rcu(&dr->rcu, rcu_free_kmmio_fault_pages);
 }
diff --git a/arch/x86/mm/memtest.c b/arch/x86/mm/memtest.c
index 0bcd7883d036..605c8be06217 100644
--- a/arch/x86/mm/memtest.c
+++ b/arch/x86/mm/memtest.c
@@ -100,6 +100,9 @@ static int __init parse_memtest(char *arg)
 {
         if (arg)
                 memtest_pattern = simple_strtoul(arg, NULL, 0);
+        else
+                memtest_pattern = ARRAY_SIZE(patterns);
+
         return 0;
 }