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[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
On 08.10.2012, at 18:18, Andreas FÃrber <afaerber@xxxxxxx> wrote: > 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. :) I'll leave that as an exercise for the reader :) Alex > > Andreas > >> It also converts >> the e500 machines and sPAPR to the new memory region model. >> >> >> Alex > > -- > SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 NÃrnberg, Germany > GF: Jeff Hawn, Jennifer Guild, Felix ImendÃrffer; HRB 16746 AG NÃrnberg _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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