From: Greg KH <gregkh@suse.de>
To: Roland Dreier <rolandd@cisco.com>
Cc: "Michael S. Tsirkin" <mst@mellanox.co.il>,
linux-pci@atrey.karlin.mff.cuni.cz, openib-general@openib.org,
linux-kernel@vger.kernel.org, mj@ucw.cz
Subject: Re: [openib-general] Re: [PATCH] arch/xx/pci: remap_pfn_range -> io_remap_pfn_range
Date: Wed, 27 Jul 2005 21:50:05 -0700 [thread overview]
Message-ID: <20050728045005.GA13070@suse.de> (raw)
In-Reply-To: <52d5p3sgbq.fsf@cisco.com>
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?
thanks,
greg k-h
next prev parent reply other threads:[~2005-07-28 4:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-25 22:32 [PATCH] arch/xx/pci: remap_pfn_range -> io_remap_pfn_range Michael S. Tsirkin
2005-07-28 4:26 ` Greg KH
2005-07-28 4:30 ` [openib-general] " Roland Dreier
2005-07-28 4:50 ` Greg KH [this message]
2005-07-28 6:48 ` Michael S. Tsirkin
2005-07-28 6:58 ` Greg KH
-- strict thread matches above, loose matches on Subject: below --
2005-07-28 11:57 [openib-general] " Ian Pratt
2005-07-28 14:18 ` Randy.Dunlap
2005-07-28 16:17 ` Greg KH
2005-07-28 14:40 Ian Pratt
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