Re: [Xen-devel] SWIOTLB allocation failed

[Lukas Hejtmanek <xhejtman@xxxxxxxxxxx>]

On Tue, Dec 04, 2007 at 09:53:53AM -0500, Christopher S. Aker wrote:
> That would attempt to assign 30 million 128k pages, or roughly 3.5 TB of 
> memory towards the bounce buffer.  I don't think you want that.
>
> swiotlb defaults to 32 or 64 (I forget) -- try bumping it to 128 or 256.

OK, but it still reports disabled:
[  162.852041] 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=256 xencons=tty
[  162.852392] Initializing CPU#0
[  162.852632] PID hash table entries: 4096 (order: 12, 32768 bytes)
[  162.852672] Xen reported: 2992.498 MHz processor.
[  162.852697] Console: colour dummy device 80x25
[  162.854447] Dentry cache hash table entries: 524288 (order: 10, 4194304 
bytes)
[  162.856471] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
[  162.856816] Software IO TLB disabled

-- 
Lukáš Hejtmánek

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