From 96a388de5dc53a8b234b3fd41f3ae2cedc9ffd42 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 11 Oct 2007 11:20:03 +0200 Subject: i386/x86_64: move headers to include/asm-x86 Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- include/asm-x86/sparsemem_64.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 include/asm-x86/sparsemem_64.h (limited to 'include/asm-x86/sparsemem_64.h') diff --git a/include/asm-x86/sparsemem_64.h b/include/asm-x86/sparsemem_64.h new file mode 100644 index 00000000000..dabb16714a7 --- /dev/null +++ b/include/asm-x86/sparsemem_64.h @@ -0,0 +1,26 @@ +#ifndef _ASM_X86_64_SPARSEMEM_H +#define _ASM_X86_64_SPARSEMEM_H 1 + +#ifdef CONFIG_SPARSEMEM + +/* + * generic non-linear memory support: + * + * 1) we will not split memory into more chunks than will fit into the flags + * field of the struct page + * + * SECTION_SIZE_BITS 2^n: size of each section + * MAX_PHYSADDR_BITS 2^n: max size of physical address space + * MAX_PHYSMEM_BITS 2^n: how much memory we can have in that space + * + */ + +#define SECTION_SIZE_BITS 27 /* matt - 128 is convenient right now */ +#define MAX_PHYSADDR_BITS 40 +#define MAX_PHYSMEM_BITS 40 + +extern int early_pfn_to_nid(unsigned long pfn); + +#endif /* CONFIG_SPARSEMEM */ + +#endif /* _ASM_X86_64_SPARSEMEM_H */ -- cgit v1.2.3