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hvm_irq_dpci
2011 Mar 31
7
use of struct hvm_mirq_dpci_mapping.gmsi vs. HVM_IRQ_DPCI_*_MSI flags
pt_irq_create_bind_vtd() initializes this substructure only when setting
.flags to HVM_IRQ_DPCI_MACH_MSI|HVM_IRQ_DPCI_GUEST_MSI (the
PT_IRQ_TYPE_MSI case), while the other path will not set
HVM_IRQ_DPCI_GUEST_MSI but may also set HVM_IRQ_DPCI_MACH_MSI.
Yet hvm_dpci_msi_eoi() and hvm_migrate_pirqs() check for
HVM_IRQ_DPCI_MACH_MSI, i.e. may run into an uninitialized
.gmsi.* field. What am I mis...