Johannes Stezenbach: > What I meant to say is that we would probably want to have > support for copying data within the kernel/driver, without > having to copy data to userspace from one driver and back into > the kernel to the other driver. E.g. VDR currently does a lot > of copying in "transfer mode", and it works fine, but it's not > particularly efficient.
I know little of Linux internals but cannot that be done at ~ zero cost in user space? For instance I'd think you could implement a read() as a simple MMU remapping rather than a real copy and same for write(), maybe with a bit of care about page alignment. How does the "zero copy networking" stuff works? -- [EMAIL PROTECTED] -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
