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Re: [Xen-users] Highmem for domU in 2.0.7

To: Daniel Hulme <dh286@xxxxxxxxx>
Subject: Re: [Xen-users] Highmem for domU in 2.0.7
From: Michael Paesold <mpaesold@xxxxxx>
Date: Sun, 11 Sep 2005 17:06:15 +0200
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Daniel Hulme wrote:
The kernel configuration has:

CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set

What options should I set here? I would like to give up to about 1.5GB
to a domU. Why is highmem disabled by default? Any negative effects on
the stability, are there known problems?

AFAIK, setting it to 4G Should Just Work. I don't know of any problems
with it and I think it is quite widely used. I don't know why it is off
by default, but possibly it is because it is off by default in the
vanilla kernel (it is still off by default in vanilla, isn't it?).

Ok, reasonable explanation. I will try as soon as I have time (probably not before two weeks) and report if it works for me (at least for the archives :-). Thanks!

Best Regards,
Michael Paesold

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