On Sat, 1 Oct 2005 16:20:59 -0400, Christopher Li <[EMAIL PROTECTED]> wrote:
> I hit this limit with running ehci in the VM. The a single ehci > qTD transfer buffer can be 5 pages long, that is 20K. [...] Even 16K is too much, IMHO. > I can complicate the user space part to work around that, > but it seems much simpler just allow usbdevfs to accept bigger buffers. It seems, yes. However, I assure you that this is not going to work for anyone who has anything reasonable swapped out, because of the kmalloc(). 16K is an order 2 allocation on systems with 4KB pages, such as Opteron. It kinda sorta works, but not really. This looks like a requirement to think about a better API. Also, the things that Harald was trying to fix, with pids and signals, just tell me that something was really wrong from the start. -- Pete ------------------------------------------------------- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
