Messages in this thread | | | Date | Tue, 13 Jan 2009 22:07:26 -0800 | From | "Yinghai Lu" <> | Subject | Re: memory beyond4GB invisible to the system even though CONFIG_HIGHMEM64G=y |
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On Tue, Jan 13, 2009 at 7:10 PM, James Kirin <james.kirin40@gmail.com> wrote: > Thank you for your reply, Roland. Unfortunately, this continues > happening after having installed the most recent version of the BIOS > available from Dell. > > I understand this is a problem in the BIOS and not the kernel, but is > there a way to have the kernel work around this bug in the BIOS and > make that memory accessible? Eg, > > http://www.gossamer-threads.com/lists/linux/kernel/991748#991748
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
later you could put that line in one scripts and call it from inittab # grep mtrrfixup /etc/inittab mtrr:345:once:/root/mtrrfixup.sh
YH
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