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Re: [Xen-devel] Question on QEMU and P2M
| To: | Wei Huang <wei.huang2@xxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Question on QEMU and P2M |
| From: | Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> |
| Date: | Wed, 24 Jun 2009 16:10:43 +0100 |
| Cc: | Keir, "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Delivery-date: | Wed, 24 Jun 2009 08:11:53 -0700 |
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Wei Huang writes ("[Xen-devel] Question on QEMU and P2M"):
> I am facing a qemu-dm problem when setting up 1GB page table to P2M.
...
> Any suggestion of suspicious code areas to look at?
This is unlikely to be a problem in qemu-dm; qemu-dm gets told the
guest-physical of IO requests addresses by Xen. I would suggest that
the starting point would be xen/arch/x86/hvm/io.c and its subroutines
and callers. That's the place where the IO requests are collected and
sent on to the device model (ie, qemu-dm).
Ian.
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