From 5e72d9e4850c91b6a0f06fa803f7393b55a38aa8 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Fri, 12 Sep 2008 15:43:04 +0100 Subject: [PATCH] x86-64: fix combining of regions in init_memory_mapping() When nr_range gets decremented, the same slot must be considered for coalescing with its new successor again. The issue is apparently pretty benign to native code, but surfaces as a boot time crash in our forward ported Xen tree (where the page table setup overall works differently than in native). Signed-off-by: Jan Beulich Acked-by: Yinghai Lu Signed-off-by: Ingo Molnar --- arch/x86/mm/init_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 7c8bb46e83e4..b8e461d49412 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -746,7 +746,7 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, old_start = mr[i].start; memmove(&mr[i], &mr[i+1], (nr_range - 1 - i) * sizeof (struct map_range)); - mr[i].start = old_start; + mr[i--].start = old_start; nr_range--; } -- GitLab