Define a version of memory_block_size_bytes for x86_64 when CONFIG_X86_UV is
set.
Signed-off-by: Robin Holt <h...@sgi.com>
Signed-off-by: Jack Steiner <stei...@sgi.com>
Signed-off-by: Nathan Fontenot <nf...@austin.ibm.com>
---
arch/x86/mm/init_64.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
Index: linux-2.6/arch/x86/mm/init_64.c
===================================================================
--- linux-2.6.orig/arch/x86/mm/init_64.c 2011-01-20 08:18:20.000000000
-0600
+++ linux-2.6/arch/x86/mm/init_64.c 2011-01-20 08:21:10.000000000 -0600
@@ -51,6 +51,7 @@
#include <asm/numa.h>
#include <asm/cacheflush.h>
#include <asm/init.h>
+#include <asm/uv/uv.h>
static int __init parse_direct_gbpages_off(char *arg)
{
@@ -908,6 +909,19 @@ const char *arch_vma_name(struct vm_area
return NULL;
}
+#ifdef CONFIG_X86_UV
+#define MIN_MEMORY_BLOCK_SIZE (1 << SECTION_SIZE_BITS)
+
+unsigned long memory_block_size_bytes(void)
+{
+ if (is_uv_system()) {
+ printk(KERN_INFO "UV: memory block size 2GB\n");
+ return 2UL * 1024 * 1024 * 1024;
+ }
+ return MIN_MEMORY_BLOCK_SIZE;
+}
+#endif
+
#ifdef CONFIG_SPARSEMEM_VMEMMAP
/*
* Initialise the sparsemem vmemmap using huge-pages at the PMD level.
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