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From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] [PATCH 6/6] use uint32_t for ioport port and value instead of int. |
Date: | Fri, 10 Jul 2009 08:16:15 -0500 |
User-agent: | Thunderbird 2.0.0.21 (X11/20090320) |
Tristan Gingold wrote:
Yes.Port IO is done through usual memory access, but either the processor or the north-bridge can recognize this address and convert the memory access to a port access. After all PCI cards knows about IO vs Memory.
So would we actually model this in QEMU through cpu_in/out? Can PCI IO regions that are marked as PIO actually be > 16-bit in size? Regards, Anthony Liguori
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