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    SubjectRe: [PATCH] Prevent reserving RAM in the region already reserved by BIOS
    On 05/18/2010 10:35 PM, Mathieu Rondonneau wrote:
    > 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,

    do you notice any changes in /proc/iomem?

    YH


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