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Re: [Qemu-devel] [PATCH 01/10] Add stub functions for PCI device models


From: Avi Kivity
Subject: Re: [Qemu-devel] [PATCH 01/10] Add stub functions for PCI device models to do PCI DMA
Date: Fri, 02 Sep 2011 11:35:38 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20110816 Thunderbird/6.0

On 09/01/2011 07:32 PM, Anthony Liguori wrote:
True. But I still think it's the right thing.

We can't really pass a MemoryRegion as the source address, since there
is no per-device MemoryRegion.


Couldn't the PCI bus expose 255 MemoryRegions though?

What would those mean? A MemoryRegion is something that can respond to reads and writes.

It could still use the pci_address_space I think since that should include RAM too, right?


No.

In fact, initially, you could have a pci_bus_get_device_memory_region(bus, dev) that just returns pci_address_space().

You just need the memory_st[bwl] functions I think.


Maybe we need a different type of object here - MemoryClient or something.

--
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