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| author |   Nathan Fontenot <nfont@austin.ibm.com> | 2011-01-20 10:46:15 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-03 16:08:58 -0800 |
| commit | 1dc41aa6d6172d61c10638d11933a3595a41d51a (patch) | |
| tree | 1dd99e7f30a2a0442a6c839d9d84fe83fc91eb81 | |
| parent | memory hotplug: Define memory_block_size_bytes for powerpc/pseries (diff) | |
| download | linux-dev-1dc41aa6d6172d61c10638d11933a3595a41d51a.tar.xz linux-dev-1dc41aa6d6172d61c10638d11933a3595a41d51a.zip | |
memory hotplug: Define memory_block_size_bytes for x86_64 with CONFIG_X86_UV
Define a version of memory_block_size_bytes for x86_64 when CONFIG_X86_UV is
set.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/mm/init_64.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 71a59296af80..17e90d1f8c4d 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -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_struct *vma) 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. |