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It is found that SOS will reset the PCI devices under PCI bridge 00:1c.0 when 00:1c.0 is exposed to SOS. If a PCI device under 00:1c.0 is passed through to pre-launched VM, it will be reset by SOS at startup hence the passthrough will not work properly. This patch provides a workaround by hiding PCI bridge 00:1c.0 from SOS in this case. Tracked-On: #5346 Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com> |
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pci_dev.c | ||
vacpi.c | ||
vm_config.c |