On Mon, 2006-10-02 at 20:35 +0200, Andi Kleen wrote: > Yes, but it can't when the bounce code is not compiled in. > In this case it just printks and you saw those printks. That's this bit of subversion in ll_rw_blk.c:blk_queue_bounce_limit() #if BITS_PER_LONG == 64 /* Assume anything <= 4GB can be handled by IOMMU. Actually some IOMMUs can handle everything, but I don't know of a way to test this here. */ if (bounce_pfn < (min_t(u64,0xffffffff,BLK_BOUNCE_HIGH) >> PAGE_SHIFT)) dma = 1; q->bounce_pfn = max_low_pfn; #else ? That really looks wrong ... it will fail, as we've seen for 64 bit platforms with no iommu. We should init the isa pool in that case. James - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
