[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [Qemu-devel] [PATCH 00/14] Remove old_portio users for memory region PIO mapping

Am 08.10.2012 14:23, schrieb Alexander Graf:
> When running on PowerPC, we don't have native PIO support. There are a few 
> hacks
> around to enable PIO access on PowerPC nevertheless.
> The most typical one is the isa-mmio device. It takes MMIO requests and 
> converts
> them to PIO requests on the (QEMU internal) PIO bus.
> This however is not how real hardware works and it limits us in the ability to
> spawn eventfd's on PIO ports which doesn't work with this approach.  Instead,
> let's model it more easily. Let's just map the PIO memory region into MMIO
> space.
> For this to work, we need to get rid of all old_portio struct users, as they
> break with this approach. This is what this patch set does.

Looks sensible to me as far as reviewed, but I'm missing a patch 13 that
actually rips out old_portio afterwards. :)


> It also converts
> the e500 machines and sPAPR to the new memory region model.
> Alex

SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.