Subject: Re: copyin/out
To: None <>
From: David Laight <>
List: port-arm
Date: 08/09/2002 23:15:42
> Well... if you take a look at the current copyin/copyout, I'm not
> sure you can convince me that the new one would be significantly
> *slower*.  The current one is ... really brain-dead.

I've seen it...
It is even broken since it lets a transfer run over the top of
user space.

One thing I don't remember is whether the permission bits are saved
with the cache line?  (The arm system I had ran an embedded OS so
I didn't look that deeply into the mmu.)


David Laight: