Re: [Xen-devel] SWIOTLB allocation failed

["pradeep singh rautela" <rautelap@xxxxxxxxx>]

On Nov 27, 2007 7:23 PM, Lukas Hejtmanek <xhejtman@xxxxxxxxxxx> wrote:
> Hello,
>
> I'm using Xen 3.1 with kernel 2.6.18. If I use swiotlb=force option to boot

Did you try using swiotlb=XYZ to solve your problem? XYZ is the amount
of the memory for swiotlb.
Did you get the same crash?

Thanks
> domU, I got the following message:
> xm create -c skirit60-1
> Using config file "/etc/xen/skirit60-1".
> Started domain skirit60-1
>                          Bootdata ok (command line is root=/dev/sda1 ro
> ip=147.251.11.44:1.2.3.4:147.251.11.1:255.255.255.128:skirit60-1:eth0:off
> magrathea=eth1:10.0.0.1:10.0.0.101: swiotlb=force)
> Linux version 2.6.18-xen31-smp (root@skirit60) (gcc version 4.0.2 20050901
> (prerelease) (SUSE Linux)) #19 SMP Tue Jul 10 01:06:20 CEST 2007
> BIOS-provided physical RAM map:
>  Xen: 0000000000000000 - 000000009cc00000 (usable)
> No mptable found.
> Built 1 zonelists.  Total pages: 642048
> Kernel command line: root=/dev/sda1 ro
> ip=147.251.11.44:1.2.3.4:147.251.11.1:255.255.255.128:skirit60-1:eth0:off
> magrathea=eth1:10.0.0.1:10.0.0.101: swiotlb=force
> Initializing CPU#0
> PID hash table entries: 4096 (order: 12, 32768 bytes)
> Xen reported: 2992.500 MHz processor.
> Console: colour dummy device 80x25
> Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes)
> Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
> Kernel panic - not syncing: No suitable physical memory available for SWIOTLB
> buffer!
> Use dom0_mem Xen boot parameter to reserve
> some DMA memory (e.g., dom0_mem=-128M).
>
>
> is there something I could do to improve domU? Dom0 has only 256MB RAM, system
> has 4GB RAM total. (DomU is assigned 2.5GB RAM.)
>
> --
> LukÃÅ HejtmÃnek
>
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>



-- 
--
pradeep singh rautela

"question = ( to ) ? be : ! be;"
                -- Wm. Shakespeare

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