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From: | Chen, Tiejun |
Subject: | Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough |
Date: | Fri, 29 Aug 2014 09:28:50 +0800 |
User-agent: | Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 |
On 2014/8/28 8:56, Chen, Tiejun wrote:
+ */ + dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0), + "xen-igd-passthrough-isa-bridge"); + if (dev) { + r = xen_host_pci_device_get(&hdev, 0, 0, PCI_DEVFN(0x1f, 0), 0); + if (!r) { + pci_config_set_vendor_id(dev->config, hdev.vendor_id); + pci_config_set_device_id(dev->config, hdev.device_id);Can you, instead, implement the reverse logic, probing the card and supplying the correct device id for PCH?Here what is your so-called reverse logic as I already asked you previously? Do you mean I should list all PCHs with a combo illustrated with the vendor/device id in advance? Then look up if we can find aMichael,Ping. Thanks TiejunCould you explain this exactly? Then I can try follow-up your idea ASAP if this is necessary and possible.
Michel,Could you give us some explanation for your "reverse logic" when you're free?
Thanks Tiejun
Thanks Tiejunmatched PCH? If yes, what is that benefit you expect in passthrough case? Shouldn't we pass these info to VM directly in passthrough case? Thanks Tiejun
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