Messages in this thread | | | Date | Thu, 19 Apr 2007 16:30:07 +0200 | From | Paolo Ornati <> | Subject | Re: how to tell linux (on x86) to ignore 1M or memory |
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On Thu, 19 Apr 2007 10:18:04 -0400 Bart Trojanowski <bart@jukie.net> wrote:
> I need to preserve some state from the bios before entering protected > mode. For now I want to copy it into some ram accessible by real-mode, > say the last megabyte visible in real-mode. > > What's the easiest way to have linux ignore the megabyte starting at 15M? >
Documentation/kernel-parameters.txt:
memmap=nn[KMG]$ss[KMG] [KNL,ACPI] Mark specific memory as reserved. Region of memory to be used, from ss to ss+nn.
So adding this to kernel boot parameters should do the trick:
memmap=15M$1M
-- Paolo Ornati Linux 2.6.21-rc7-CFS-v3-g6262cd9f on x86_64 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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