On Mon, 2005-10-17 at 12:26 -0700, Ravikiran G Thirumalai wrote:
> This memory only node has a node id? Then how about a patch which iterates over
> nodes in swiotlb.c, trying to allocate DMA'ble memory from node 0 and above
> until it gets proper memory for swiotlb?
>
> Would that be accepatble? I can quickly make a patch for that if it is
> acceptable..
Yes, the memory-only node is just another node. Iterating over all
nodes sounds a little brute force, but I guess it should work. FWIW,
here's the results of the previous one-liner on an HP Superdome (booting
w/ machvec=dig to use the swiotlb instead of hardware iotlb):
2.6.14-rc4-mm1, before patch:
Placing software IO TLB between 0x4cdc000 - 0x8cdc000
after patch:
Placing software IO TLB between 0x74104e6b200 - 0x74108e6b200
Thanks,
Alex
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