* PIO/MMIO access from guest
@ 2013-02-15 17:10 Gábor PÉK
0 siblings, 0 replies; only message in thread
From: Gábor PÉK @ 2013-02-15 17:10 UTC (permalink / raw)
To: kvm
Hi all,
I would like to access the configuration registers of my passthrough
device from an unmodified guest under KVM via MMIO/PIO directly. Is
there any option to configure the guest in this way? I know that you can
do this with the ioports=[''] option in case of Xen, but I could not
find any such option until now for KVM. I also read that
[+] PIO can be passed directly via VMCS I/O bitmaps
[+] MMIO can be passed directly via mapping device BARs to guest
[+] Some PIO/MMIO accesses must be trapped (PCI config space)
Can I do this with some configurations without recompiling the kernel?
Thank you!
-gabor
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2013-02-15 17:10 PIO/MMIO access from guest Gábor PÉK
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