Re: tried ia64-net-20020506.iso, (rx4610) failed with map_single IO TLB kernel panic...
> Jiri> I had the same swiotlb problem. The computer (SGI 750) hung
> Jiri> (kernel panic) after network card initialization
> Jiri> (ifconfig). The card (on-board) is Intel Pro/100 (or
> Jiri> equivalent).
>
> Huh, this is very strange. I didn't think the eepro driver could ever
> have more than the ~1000 buffers which the swiotlb supports by default
> (it's reserving about 2MB of bounce buffers, by default).
To be more specific:
"Kernel panic: map_single: could not allocate software IO TLB (1552 bytes)"
So strictly speaking I probably do not need swiotlb=32768, but something like
swiotlb=2048 should be sufficient. On the other hand the default is too small.
Jiri Polach
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