Re: Early boot panic on machine with lots of memory

[Tejun Heo]

Hello,

Sasha, can you please apply the following patch and verify that the
issue is gone?

Thanks.

diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index d23415c..4aa5e5d 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -111,9 +111,6 @@ unsigned long __init free_low_memory_core_early(int nodeid)
 	phys_addr_t start, end;
 	u64 i;
 
-	/* free reserved array temporarily so that it's treated as free area */
-	memblock_free_reserved_regions();
-
 	for_each_free_mem_range(i, MAX_NUMNODES, &start, &end, NULL) {
 		unsigned long start_pfn = PFN_UP(start);
 		unsigned long end_pfn = min_t(unsigned long,
@@ -124,8 +121,6 @@ unsigned long __init free_low_memory_core_early(int nodeid)
 		}
 	}
 
-	/* put region array back? */
-	memblock_reserve_reserved_regions();
 	return count;
 }
 
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