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authorDavid S. Miller <davem@davemloft.net>2008-10-11 12:39:35 -0700
committerDavid S. Miller <davem@davemloft.net>2008-10-11 12:39:35 -0700
commit56c5d900dbb8e042bfad035d18433476931d8f93 (patch)
tree00b793965beeef10db03e0ff021d2d965c410759 /arch/arm/include/asm/sparsemem.h
parent4dd95b63ae25c5cad6986829b5e8788e9faa0330 (diff)
parentead9d23d803ea3a73766c3cb27bf7563ac8d7266 (diff)
downloadop-kernel-dev-56c5d900dbb8e042bfad035d18433476931d8f93.zip
op-kernel-dev-56c5d900dbb8e042bfad035d18433476931d8f93.tar.gz
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: sound/core/memalloc.c
Diffstat (limited to 'arch/arm/include/asm/sparsemem.h')
-rw-r--r--arch/arm/include/asm/sparsemem.h20
1 files changed, 17 insertions, 3 deletions
diff --git a/arch/arm/include/asm/sparsemem.h b/arch/arm/include/asm/sparsemem.h
index 2771581..0009861 100644
--- a/arch/arm/include/asm/sparsemem.h
+++ b/arch/arm/include/asm/sparsemem.h
@@ -3,8 +3,22 @@
#include <asm/memory.h>
-#define MAX_PHYSADDR_BITS 32
-#define MAX_PHYSMEM_BITS 32
-#define SECTION_SIZE_BITS NODE_MEM_SIZE_BITS
+/*
+ * Two definitions are required for sparsemem:
+ *
+ * MAX_PHYSMEM_BITS: The number of physical address bits required
+ * to address the last byte of memory.
+ *
+ * SECTION_SIZE_BITS: The number of physical address bits to cover
+ * the maximum amount of memory in a section.
+ *
+ * Eg, if you have 2 banks of up to 64MB at 0x80000000, 0x84000000,
+ * then MAX_PHYSMEM_BITS is 32, SECTION_SIZE_BITS is 26.
+ *
+ * Define these in your mach/memory.h.
+ */
+#if !defined(SECTION_SIZE_BITS) || !defined(MAX_PHYSMEM_BITS)
+#error Sparsemem is not supported on this platform
+#endif
#endif
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