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Re: [Qemu-ppc] [Qemu-devel] [PATCH 00/14] Remove old_portio users for me
From: |
Andreas Färber |
Subject: |
Re: [Qemu-ppc] [Qemu-devel] [PATCH 00/14] Remove old_portio users for memory region PIO mapping |
Date: |
Mon, 08 Oct 2012 18:18:01 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120825 Thunderbird/15.0 |
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. :)
Andreas
> It also converts
> the e500 machines and sPAPR to the new memory region model.
>
>
> Alex
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- [Qemu-ppc] [PATCH 14/14] PPC: pseries: Remove hack for PIO window, (continued)
[Qemu-ppc] [PATCH 07/14] pc port92: convert PIO to new memory api read/write, Alexander Graf, 2012/10/08
Re: [Qemu-ppc] [Qemu-devel] [PATCH 00/14] Remove old_portio users for memory region PIO mapping,
Andreas Färber <=