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Subject[PATCH] Make x86 latest boot with non-discontig boxes
Commit 0596152388e234efebce464355186ad9e16c8cb6
broke my box, since it removes completely the call to
memory_present() at e820 setup.

It seems to be really not needed with discontig memory,
but with flat and sparse, I get an early crash. The proposed patch
moves the call memory_present() to setup_memory, the one
present in setup_32.c.

Signed-off-by: Glauber Costa <>
CC: Yinghai Lu <>
arch/x86/kernel/setup_32.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 2901042..841eb2f 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -388,6 +388,8 @@ static unsigned long __init setup_memory(void)
max_mapnr = num_physpages;
+ memory_present(0, 0, max_pfn);
printk(KERN_NOTICE "%ldMB LOWMEM available.\n",


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