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hv: don't remap msi for pt devices if lapic_pt

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Since lapic is passed through, MSI/MSIx should be configured with the
vector allocated within guest OS, instead of physical vector allocated
in hypervisor.

Tracked-On: #2351
Signed-off-by: Yan, Like <like.yan@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Yan, Like 2018-12-01 12:32:43 +08:00 committed by wenlingz
parent a073ebeeca
commit 16df57aa44
1 changed files with 7 additions and 1 deletions
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8
hypervisor/arch/x86/assign.c
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@ -541,7 +541,13 @@ int32_t ptirq_msix_remap(struct acrn_vm *vm, uint16_t virt_bdf,
info->pmsi_data.full = 0U; info->pmsi_data.full = 0U;
} else { } else {
/* build physical config MSI, update to info->pmsi_xxx */ /* build physical config MSI, update to info->pmsi_xxx */
ptirq_build_physical_msi(vm, info, irq_to_vector(entry->allocated_pirq)); if (is_lapic_pt(vm)) {
/* for vm with lapic-pt, keep vector from guest */
ptirq_build_physical_msi(vm, info, info->vmsi_data.bits.vector);
} else {
ptirq_build_physical_msi(vm, info, irq_to_vector(entry->allocated_pirq));
}
entry->msi = *info; entry->msi = *info;
dev_dbg(ACRN_DBG_IRQ, "PCI %x:%x.%x MSI VR[%d] 0x%x->0x%x assigned to vm%d", dev_dbg(ACRN_DBG_IRQ, "PCI %x:%x.%x MSI VR[%d] 0x%x->0x%x assigned to vm%d",
pci_bus(virt_bdf), pci_slot(virt_bdf), pci_func(virt_bdf), entry_nr, pci_bus(virt_bdf), pci_slot(virt_bdf), pci_func(virt_bdf), entry_nr,