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SubjectRe: Re:[PATCH] New phys_addr() syscall
Inaky Perez Gonzalez writes:
> >>>>> "Richard" == Richard Gooch <> writes:
> Hi
> Richard> Hi, all. I've implemented a simple new system call called
> Richard> phys_addr() which converts a virtual address to a physical
> Richard> address.
> Cool. I needed some of this for the USB Stack; I've been using
> something I found at linux/drivers/char/bttv.c, as I wanted to be able
> to directly do PCI read and writes to user space.
> Could the interface be extended to be used from kernel-land?
> It seems to be _non_ standard.

It's such a simple operation, I don't see much point in having a
function. I don't know what you mean by non-standard. Sure, it's a
non-standard API for userspace, since it's new. But it uses standard
kernel functions.


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