Re: [openib-general] Re: [PATCH] arch/xx/pci: remap_pfn_range -> io_remap_pfn_range

From: Greg KH
Date: Wed Jul 27 2005 - 23:52:47 EST

On Wed, Jul 27, 2005 at 09:30:17PM -0700, Roland Dreier wrote:
> Greg> Hm, you do realize that io_remap_pfn_range() is the same
> Greg> thing as remap_pfn_range() on i386, right?
> Greg> So, why would this patch change anything?
> It's not the same thing under Xen. I think this patch fixes userspace
> access to PCI memory for XenLinux.

But Xen is a separate arch, and hence, will get different pci arch
specific functions, right?

In short, what is this patch trying to fix? What is the problem anyone
is seeing with the existing code?


greg k-h
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