linux-kernel - Re: [Xen-devel] [PATCH v7 5/9] PCI: Add pci_iomap

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Date:	Thu, 25 Jun 2015 11:12:44 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	"Luis R. Rodriguez" <mcgrof@...e.com>
Cc:	linux-fbdev <linux-fbdev@...r.kernel.org>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Ville Syrjälä <syrjala@....fi>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Jan Beulich <jbeulich@...e.com>,
	Ville Syrjälä 
	<ville.syrjala@...ux.intel.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	Arnd Bergmann <arnd@...db.de>,
	Davidlohr Bueso <dbueso@...e.de>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Mel Gorman <mgorman@...e.de>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Dave Airlie <airlied@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	Borislav Petkov <bp@...e.de>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Antonino Daplas <adaplas@...il.com>,
	Suresh Siddha <sbsiddha@...il.com>,
	Stefan Bader <stefan.bader@...onical.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Vlastimil Babka <vbabka@...e.cz>,
	Juergen Gross <jgross@...e.com>,
	Toshi Kani <toshi.kani@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>,
	David Vrabel <david.vrabel@...rix.com>,
	venkatesh.pallipadi@...el.com,
	Roger Pau Monné <roger.pau@...rix.com>
Subject: Re: [Xen-devel] [PATCH v7 5/9] PCI: Add pci_iomap_wc() variants

On Wed, 2015-06-24 at 17:58 -0700, Luis R. Rodriguez wrote:
> On Wed, Jun 24, 2015 at 5:52 PM, Benjamin Herrenschmidt
> <benh@...nel.crashing.org> wrote:
> > On Thu, 2015-06-25 at 02:08 +0200, Luis R. Rodriguez wrote:
> >>
> >> OK thanks I'll proceed with these patches then.
> >>
> >> > As for user mappings,
> >>
> >> Which APIs were you considering in this regard BTW?
> >
> > mmap of the generic /sys/bus/pci/.../resource*
> 
> Like? Got a demo patch in mind ? :)

Nope. I was just thinking out loud. Today I have yet to see a problem
with what we do so ...

Cheers,
Ben.


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