On Thu, 2006-02-23 at 14:27 +0800, erich wrote: > Dear Christoph Hellwig, > > I have figure out your comments about "remove internal queueing" and "remove > odd ioctl". > But about "hardware datastructures", areca's firmware spec is need to get a > trunk of contingous memory space under 4G. > In 64bit platform arcmsr need to make sure all ccbs have same of > ccb_phyaddr_hi32 physical address. > If arcmsr use dma_pool_alloc do a separate dma mapping. > Is there any method to avoid ccbs pool cross 4G segment? the pci mapping layer prevents that already entirely; there is a LOT of hardware that cannot deal with segments crossing 4G boundaries, so much in fact that it's now generically disabled. > In some mainboard if I always enable msi function, it will cause system hang > up. > If it is not a config option, do you have any idea to avoid this issue? how about a module option (module_param)? - : 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
