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From: WanPeng Li <liwp@linux.vnet.ibm.com>
To: qemu-devel <qemu-devel@nongnu.org>
Subject: [Qemu-devel] questions about pci
Date: Sun, 4 Mar 2012 20:33:40 +0800	[thread overview]
Message-ID: <20120304123140.GA1760@liwp@linux.vnet.ibm.com> (raw)

Hi all:

I read pci code in qemu about i440fx, pci.c and so on. I think if guest
os whose mainboard is based on x86, it will use IO instructions to
access PCI configuration space.If not use passthrough, qemu should
emulate these operations.I find a function called kvm_handle_io who will
emulate ioport write/read, I have traced this function, but I haven't found it has
any relationship with pci read/write configuration space functions like
i440fx_write_config and piix3_write_config.So how does it emulate pci
configuration space access when not use passthrough?


thanks 
Wanpeng Li

LTC China, IBM

             reply	other threads:[~2012-03-04 12:33 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-04 12:33 WanPeng Li [this message]
2012-03-06 10:10 ` [Qemu-devel] questions about pci 陳韋任
     [not found]   ` <20120307114708.GA2404@liwp@linux.vnet.ibm.com>
2012-03-08  2:50     ` 陳韋任

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