Merge branches 'x86/xen', 'x86/build', 'x86/microcode', 'x86/mm-debug-v2', 'x86/memor...

[pandora-kernel.git] / arch / x86 / mm / ioremap.c

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index d4b6e6a..8cbeda1 100644 (file)
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -24,18 +24,26 @@
 
 #ifdef CONFIG_X86_64
 
-unsigned long __phys_addr(unsigned long x)
+static inline int phys_addr_valid(unsigned long addr)
 {
-       if (x >= __START_KERNEL_map)
-               return x - __START_KERNEL_map + phys_base;
-       return x - PAGE_OFFSET;
+       return addr < (1UL << boot_cpu_data.x86_phys_bits);
 }
-EXPORT_SYMBOL(__phys_addr);
 
-static inline int phys_addr_valid(unsigned long addr)
+unsigned long __phys_addr(unsigned long x)
 {
-       return addr < (1UL << boot_cpu_data.x86_phys_bits);
+       if (x >= __START_KERNEL_map) {
+               x -= __START_KERNEL_map;
+               VIRTUAL_BUG_ON(x >= KERNEL_IMAGE_SIZE);
+               x += phys_base;
+       } else {
+               VIRTUAL_BUG_ON(x < PAGE_OFFSET);
+               x -= PAGE_OFFSET;
+               VIRTUAL_BUG_ON(system_state == SYSTEM_BOOTING ? x > MAXMEM :
+                                       !phys_addr_valid(x));
+       }
+       return x;
 }
+EXPORT_SYMBOL(__phys_addr);
 
 #else
 
@@ -44,6 +52,17 @@ static inline int phys_addr_valid(unsigned long addr)
        return 1;
 }
 
+#ifdef CONFIG_DEBUG_VIRTUAL
+unsigned long __phys_addr(unsigned long x)
+{
+       /* VMALLOC_* aren't constants; not available at the boot time */
+       VIRTUAL_BUG_ON(x < PAGE_OFFSET || (system_state != SYSTEM_BOOTING &&
+                                       is_vmalloc_addr((void *)x)));
+       return x - PAGE_OFFSET;
+}
+EXPORT_SYMBOL(__phys_addr);
+#endif
+
 #endif
 
 int page_is_ram(unsigned long pagenr)
@@ -83,6 +102,25 @@ int page_is_ram(unsigned long pagenr)
        return 0;
 }
 
+int pagerange_is_ram(unsigned long start, unsigned long end)
+{
+       int ram_page = 0, not_rampage = 0;
+       unsigned long page_nr;
+
+       for (page_nr = (start >> PAGE_SHIFT); page_nr < (end >> PAGE_SHIFT);
+            ++page_nr) {
+               if (page_is_ram(page_nr))
+                       ram_page = 1;
+               else
+                       not_rampage = 1;
+
+               if (ram_page == not_rampage)
+                       return -1;
+       }
+
+       return ram_page;
+}
+
 /*
  * Fix up the linear direct mapping of the kernel to avoid cache attribute
  * conflicts.
@@ -421,7 +459,7 @@ void unxlate_dev_mem_ptr(unsigned long phys, void *addr)
        return;
 }
 
-int __initdata early_ioremap_debug;
+static int __initdata early_ioremap_debug;
 
 static int __init early_ioremap_debug_setup(char *str)
 {
@@ -547,7 +585,7 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx)
 }
 
 
-int __initdata early_ioremap_nested;
+static int __initdata early_ioremap_nested;
 
 static int __init check_early_ioremap_leak(void)
 {
@@ -595,7 +633,7 @@ void __init *early_ioremap(unsigned long phys_addr, unsigned long size)
         */
        offset = phys_addr & ~PAGE_MASK;
        phys_addr &= PAGE_MASK;
-       size = PAGE_ALIGN(last_addr) - phys_addr;
+       size = PAGE_ALIGN(last_addr + 1) - phys_addr;
 
        /*
         * Mappings have to fit in the FIX_BTMAP area.