xen-pcifront: Update warning comment to use 'e820_host' option.
With Xen changeset 23428 "libxl: Add 'e820_host' option to config file" the E820 as seen from the host can now be passed into the guest. This means that a PV guest can now: - Use the correct PCI I/O gap. Before these patches, Linux guest would boot up and would tell: [ 0.000000] Allocating PCI resources starting at 40000000 (gap: 40000000:c0000000) while in actuality the PCI I/O gap should have been: [ 0.000000] Allocating PCI resources starting at b0000000 (gap: b0000000:4c000000) - The PV domain with PCI devices was limited to 3GB. It now can be booted with 4GB, 8GB, or whatever number you want. The PCI devices will now _not_ conflict with System RAM. Meaning the drivers can load. CC: Jesse Barnes <jbarnes@virtuousgeek.org> CC: linux-pci@vger.kernel.org CC: stable@kernel.org [v2: Made the string less broken up. Suggested by Joe Perches] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
parent
02f8c6aee8
commit
917e3e65c3
@ -400,9 +400,8 @@ static int pcifront_claim_resource(struct pci_dev *dev, void *data)
|
|||||||
dev_info(&pdev->xdev->dev, "claiming resource %s/%d\n",
|
dev_info(&pdev->xdev->dev, "claiming resource %s/%d\n",
|
||||||
pci_name(dev), i);
|
pci_name(dev), i);
|
||||||
if (pci_claim_resource(dev, i)) {
|
if (pci_claim_resource(dev, i)) {
|
||||||
dev_err(&pdev->xdev->dev, "Could not claim "
|
dev_err(&pdev->xdev->dev, "Could not claim resource %s/%d! "
|
||||||
"resource %s/%d! Device offline. Try "
|
"Device offline. Try using e820_host=1 in the guest config.\n",
|
||||||
"giving less than 4GB to domain.\n",
|
|
||||||
pci_name(dev), i);
|
pci_name(dev), i);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
Loading…
Reference in New Issue
Block a user