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    Subject[PATCH] Prevent reserving RAM in the region already reserved by BIOS
    From
    Does it make sense to prevent looking for stolen RAM below the ISA section.


    Signed-off-by: Mathieu Rondonneau <mathieu.rondonneau@gmail.com>
    ---
    arch/x86/kernel/e820.c | 2 ++
    1 files changed, 2 insertions(+), 0 deletions(-)

    diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
    index 7bca3c6..322c9c3 100644
    --- a/arch/x86/kernel/e820.c
    +++ b/arch/x86/kernel/e820.c
    @@ -1156,6 +1156,8 @@ void __init e820_reserve_resources_late(void)
    end = MAX_RESOURCE_SIZE;
    if (start >= end)
    continue;
    + if (end < ISA_START_ADDRESS)
    + continue;
    printk(KERN_DEBUG "reserve RAM buffer: %016llx - %016llx ",
    start, end);
    reserve_region_with_split(&iomem_resource, start, end,
    --
    1.6.3.3

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