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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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