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| author | Jeff Garzik <jgarzik@pretzel.yyz.us> | 2005-06-26 18:06:06 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-06-26 18:06:06 -0400 |
| commit | aef7b83c92dd0b7e994805440655d1d64147287b (patch) | |
| tree | 981f373358c1988e061625e8f272013065cb086f /include/asm-x86_64/sparsemem.h | |
| parent | b1fc5505e0dbcc3fd7c75bfe6bee39ec50080963 (diff) | |
| parent | 8678887e7fb43cd6c9be6c9807b05e77848e0920 (diff) | |
| download | kernel-crypto-aef7b83c92dd0b7e994805440655d1d64147287b.tar.gz kernel-crypto-aef7b83c92dd0b7e994805440655d1d64147287b.tar.xz kernel-crypto-aef7b83c92dd0b7e994805440655d1d64147287b.zip | |
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'include/asm-x86_64/sparsemem.h')
| -rw-r--r-- | include/asm-x86_64/sparsemem.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-x86_64/sparsemem.h b/include/asm-x86_64/sparsemem.h new file mode 100644 index 00000000000..dabb16714a7 --- /dev/null +++ b/include/asm-x86_64/sparsemem.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 */ |