On Fri, Oct 02, 2020 at 01:51:58AM -0700, Dexuan Cui wrote:
> pci_restore_msi_state() directly writes the MSI/MSI-X related registers
> via MMIO. On a physical machine, this works perfectly; for a Linux VM
> running on a hypervisor, which typically enables IOMMU interrupt remapping,
> the
pci_restore_msi_state() directly writes the MSI/MSI-X related registers
via MMIO. On a physical machine, this works perfectly; for a Linux VM
running on a hypervisor, which typically enables IOMMU interrupt remapping,
the hypervisor usually should trap and emulate the MMIO accesses in order
to
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