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    SubjectRe: memory beyond4GB invisible to the system even though CONFIG_HIGHMEM64G=y
    Hi Yinghai,

    > please do
    > 1. boot linux with "disable_mtrr_trim" in grub.conf etc
    > 2. after booting input:
    > echo "base=0x100000000 size=0x20000000 type=write-back" >/proc/mtrr

    Thank you for your suggestion.

    Unfortunately, booting with disable_mtrr_trim leads to a kernel panic:

    [<c0103abb>] kernel_thread_helper+0x7/0x1c
    ===========
    Code: 0c 31 d2 89 e8 e8 c2 f4 ff ff 89 c3 eb 8e 8b 85 cc 00 00 00 89 44 24 10 83
    bd ec 00 01 00 04 0f 84 cf 00 00 00 8b 9d f0 00 01 00 <8b> 43 10 3b 43 0c 0f 84
    d5 00 00 00 8b 53 10 8b 85 ec 00 01 00
    EIP: [<c026bc2f] hid_parser_main+0xcf/0x290 SS:ESP 0068:f7c2bd7c
    ---[ end trace 34615b445589fbb6 ]---
    Kernel panic - not syncing: Attempted to kill init!

    I am attaching the kernel config file. The system boots fine if I
    remove "disable_mtrr_trim" from lilo.conf (and rerun lilo).

    Thank you for any help,

    James
    [unhandled content-type:application/octet-stream]
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