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[Xen-devel] Re: Failure booting domU with < 24M
- To: xen-devel@xxxxxxxxxxxxxxxxxxx
- From: Jacob Gorm Hansen <jacobg@xxxxxxx>
- Date: Thu, 3 Nov 2005 16:03:59 +0100
- Delivery-date: Thu, 03 Nov 2005 15:01:08 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xensource.com>
On 11/3/05, Jacob Gorm Hansen <jacobg@xxxxxxx> wrote:
> hi,
>
> with unstable from yesterday, linux seems to have trouble detecting
> how much memory to use, i.e. it detects 24M even if only given 16M by
> the domain builder, and then it dies trying to allocate it:
The problem seems to be the 8M(!) slack introduced with this patch.
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 41489189b19e20b3fda4222e1787821d990206bc
# Parent c08e7f0b1ee597381d8c0dcca8a1b915b31bbc96
Add slack to balloon driver to allow to counteract low-mem
address space allocations in backend drivers.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
Could the 8M slack be made optional somehow? I like being able to have
16M domains...
Jacob
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