Re: [Xen-devel] [PATCH v7 5/9] PCI: Add pci_iomap_wc() variants

2015-06-26 Thread Luis R. Rodriguez
On Fri, Jun 26, 2015 at 4:54 PM, Benjamin Herrenschmidt wrote: > On Fri, 2015-06-26 at 15:41 -0700, Luis R. Rodriguez wrote: > >> > It wasn't nullified for the main user at the time, the fb. And I >> > mentioned an IB adapter or two for which the code had been hand >> tuned. >> >> This still means

Re: [Xen-devel] [PATCH v7 5/9] PCI: Add pci_iomap_wc() variants

2015-06-26 Thread Benjamin Herrenschmidt
On Fri, 2015-06-26 at 15:41 -0700, Luis R. Rodriguez wrote: > > It wasn't nullified for the main user at the time, the fb. And I > > mentioned an IB adapter or two for which the code had been hand > tuned. > > This still means there could be some affected drivers when used on > powerpc, no? Yes.

Re: [Xen-devel] [PATCH v7 5/9] PCI: Add pci_iomap_wc() variants

2015-06-24 Thread Benjamin Herrenschmidt
On Wed, 2015-06-24 at 17:58 -0700, Luis R. Rodriguez wrote: > On Wed, Jun 24, 2015 at 5:52 PM, Benjamin Herrenschmidt > 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

Re: [Xen-devel] [PATCH v7 5/9] PCI: Add pci_iomap_wc() variants

2015-06-24 Thread Luis R. Rodriguez
On Wed, Jun 24, 2015 at 5:52 PM, Benjamin Herrenschmidt 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/bu