Messages in this thread | | | Date | Tue, 10 Jan 2006 15:44:12 +0100 | From | Ingo Molnar <> | Subject | Re: 2G memory split |
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* Jens Axboe <axboe@suse.de> wrote:
> + Select the wanted split between kernel and user memory. > + > + If the address range available to the kernel is less than the > + physical memory installed, the remaining memory will be available > + as "high memory". Accessing high memory is a little more costly > + than low memory, as it needs to be mapped into the kernel first.
make it _ALOT_ more clear that mere mortals should not touch this option! Also, you do not mention the userspace-VM fragmentation issues. Plus, if a user uses a 2G/2G split with more than 2G of RAM, the kernel should print a warning that it's running with a non-default split. Do the same if the user uses a non-default split with less than 960MB of RAM.
> + > + Note that selecting anything but the default 3G/1G split will make > + your kernel incompatible with binary only modules.
it's not 'will' but 'may', and even then, tons of .config things can break bin-only modules, so just skip this paragraph.
looks good to me otherwise, with the text fixes it's:
Acked-by: Ingo Molnar <mingo@elte.hu>
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