Merge branches 'x86/apic', 'x86/asm', 'x86/fixmap', 'x86/memtest', 'x86/mm', 'x86...

[linux-2.6-omap-h63xx.git] / arch / x86 / mm / ioremap.c

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 62773abdf088f589503a539ed8423b81bc16dfa8..aca924a30ee6da36146acf1d86da367df04e7cc1 100644 (file)
--- 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);
-}