x86: Make 32bit support NO_BOOTMEM

Let's make 32bit consistent with 64bit.

-v2: Andrew pointed out for 32bit that we should use -1ULL

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-25-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/x86/kernel/early_res.c b/arch/x86/kernel/early_res.c
index dbf08bd01252..656cdf86a2fa 100644
--- a/arch/x86/kernel/early_res.c
+++ b/arch/x86/kernel/early_res.c
@@ -354,6 +354,9 @@ int __init get_free_all_memory_range(struct range **rangep, int nodeid)
 
         /* need to go over early_node_map to find out good range for node */
         nr_range = add_from_early_node_map(range, count, nr_range, nodeid);
+#ifdef CONFIG_X86_32
+        subtract_range(range, count, max_low_pfn, -1ULL);
+#endif
         subtract_early_res(range, count);
         nr_range = clean_sort_range(range, count);