#define THREAD_ORDER 1
#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
-#define CURRENT_MASK (~(THREAD_SIZE-1))
+#define CURRENT_MASK (~(THREAD_SIZE - 1))
#define EXCEPTION_STACK_ORDER 0
#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
#define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT)
#define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1))
-#define __PAGE_OFFSET _AC(0xffff810000000000, UL)
+/*
+ * Set __PAGE_OFFSET to the most negative possible address +
+ * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a
+ * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's
+ * what Xen requires.
+ */
+#define __PAGE_OFFSET _AC(0xffff880000000000, UL)
#define __PHYSICAL_START CONFIG_PHYSICAL_START
#define __KERNEL_ALIGN 0x200000
#define __VIRTUAL_MASK_SHIFT 48
/*
- * Kernel image size is limited to 128 MB (see level2_kernel_pgt in
+ * Kernel image size is limited to 512 MB (see level2_kernel_pgt in
* arch/x86/kernel/head_64.S), and it is mapped here:
*/
-#define KERNEL_IMAGE_SIZE (128*1024*1024)
+#define KERNEL_IMAGE_SIZE (512 * 1024 * 1024)
#define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL)
#ifndef __ASSEMBLY__
void clear_page(void *page);
void copy_page(void *to, void *from);
-extern unsigned long end_pfn;
-extern unsigned long end_pfn_map;
+/* duplicated to the one in bootmem.h */
+extern unsigned long max_pfn;
extern unsigned long phys_base;
extern unsigned long __phys_addr(unsigned long);
#define vmemmap ((struct page *)VMEMMAP_START)
+extern unsigned long init_memory_mapping(unsigned long start,
+ unsigned long end);
+
+extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn);
+
+extern void init_extra_mapping_uc(unsigned long phys, unsigned long size);
+extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
+
#endif /* !__ASSEMBLY__ */
#ifdef CONFIG_FLATMEM
-#define pfn_valid(pfn) ((pfn) < end_pfn)
+#define pfn_valid(pfn) ((pfn) < max_pfn)
#endif