Re: [Xen-devel] [RFC Patch] Support for making an E820 PCI hole in toolstack (xl + xm)

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

> It adds a new option to guest config file, which is "pci_hole". The user can
> specify the PFN number, such as '0xc0000' or in case of using the xl, '1' 
> which
> will automatically figure out the start of the PCI address.

Here is an example:

kernel="/home/konrad/git/xtt/bootstrap/dist/common/vmlinuz"
ramdisk="/home/konrad/git/xtt/bootstrap/dist/common/initramfs.cpio.gz"
extra="inittab=/etc/inittab-xen console=hvc0 debug earlyprintk=xen 
memblock=debug iommu=soft"
memory=6048
vcpus=4
on_crash="preserve"
vif = [ 'mac=00:0f:4b:00:00:68, bridge=switch' ]
pci= ["0000:03:00.0","00:1d.0","00:1d.1","00:1d.2","00:1d.7"]
vfb = [ 'vnc=1, vnclisten=0.0.0.0,vncunused=1']
pci_hole=0xa0000


Also I found out that 'xl' does not understand multiple options in the pci line
so testing with that might give you some weird results. However "xm" works fine.

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