* David Mosberger-Tang <davidm@hpl.hp.com>
*/
-#include <linux/config.h>
+# ifdef __KERNEL__
#include <asm/intrinsics.h>
#include <asm/types.h>
# define __pa(x) ((x) - PAGE_OFFSET)
# define __va(x) ((x) + PAGE_OFFSET)
#else /* !__ASSEMBLY */
-# ifdef __KERNEL__
# define STRICT_MM_TYPECHECKS
extern void clear_page (void *page);
#ifdef CONFIG_VIRTUAL_MEM_MAP
extern int ia64_pfn_valid (unsigned long pfn);
-#elif defined(CONFIG_FLATMEM)
+#else
# define ia64_pfn_valid(pfn) 1
#endif
#ifdef CONFIG_DISCONTIGMEM
# define page_to_pfn(page) ((unsigned long) (page - vmem_map))
# define pfn_to_page(pfn) (vmem_map + (pfn))
+#else
+# include <asm-generic/memory_model.h>
#endif
-#endif
-
-#if defined(CONFIG_FLATMEM) || defined(CONFIG_SPARSEMEM)
-/* FLATMEM always configures mem_map (mem_map = vmem_map if necessary) */
-#include <asm-generic/memory_model.h>
+#else
+# include <asm-generic/memory_model.h>
#endif
#ifdef CONFIG_FLATMEM
# define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
#endif
+#ifndef CONFIG_XEN
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
+#endif
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
return order;
}
-# endif /* __KERNEL__ */
#endif /* !__ASSEMBLY__ */
#ifdef STRICT_MM_TYPECHECKS
? VM_EXEC : 0))
#define devmem_is_allowed(x) 1
+#ifndef __ASSEMBLY__
+#ifdef CONFIG_XEN
+
+#include <linux/kernel.h>
+#include <asm/hypervisor.h>
+#include <xen/features.h> // to compile netback, netfront
+
+/*
+ * XXX hack!
+ * Linux/IA64 uses PG_arch_1.
+ * This hack will be removed once PG_foreign bit is taken.
+ * #include <xen/foreign_page.h>
+ */
+#ifdef __ASM_XEN_FOREIGN_PAGE_H__
+# error "don't include include/xen/foreign_page.h!"
+#endif
+
+extern struct address_space xen_ia64_foreign_dummy_mapping;
+#define PageForeign(page) \
+ ((page)->mapping == &xen_ia64_foreign_dummy_mapping)
+
+#define SetPageForeign(page, dtor) do { \
+ set_page_private((page), (unsigned long)(dtor)); \
+ (page)->mapping = &xen_ia64_foreign_dummy_mapping; \
+ smp_rmb(); \
+} while (0)
+
+#define ClearPageForeign(page) do { \
+ (page)->mapping = NULL; \
+ smp_rmb(); \
+ set_page_private((page), 0); \
+} while (0)
+
+#define PageForeignDestructor(page) \
+ ( (void (*) (struct page *)) page_private(page) )
+
+#define arch_free_page(_page,_order) \
+({ int foreign = PageForeign(_page); \
+ if (foreign) \
+ (PageForeignDestructor(_page))(_page); \
+ foreign; \
+})
+#define HAVE_ARCH_FREE_PAGE
+
+#include <asm/maddr.h>
+#endif /* CONFIG_XEN */
+#endif /* __ASSEMBLY__ */
+#endif /* __KERNEL__ */
#endif /* _ASM_IA64_PAGE_H */