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)?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
