Re: [Xen-devel] kernel log flooded with: xen_balloon: reserve_additional_memory: add_memory() failed: -17

[Jacek Konieczny <jajcus@xxxxxxxxxx>]

On Wed, Dec 19, 2012 at 08:47:22AM +0000, James Dingwall wrote:
> Hi,
> 
> I have encountered an apparently benign error on two systems where the 
> dom0 kernel log is flooded with messages like:
> 
> [52482.163855] System RAM resource [mem 0x1b8000000-0x1bfffffff] cannot 
> be added
> [52482.163860] xen_balloon: reserve_additional_memory: add_memory() 
> failed: -17

I have seen this bug too (under Xen 4.2.0).

I am using the following workaround to stop those messages:

cat /sys/devices/system/xen_memory/xen_memory0/info/current_kb > \
        /sys/devices/system/xen_memory/xen_memory0/target_kb

I have not verified yet if Xen 4.2.1 is also affected.

Greets,
        Jacek

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