From: Alex Williamson Date: Mon, 13 May 2013 20:20:02 +0000 (-0600) Subject: pci-assign: Add MSI affinity support X-Git-Tag: Tizen_Studio_1.3_Release_p2.3.1~524^2~3^2~591 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3459f01b2d9612070ec23221a4ccb60a41b775ae;p=sdk%2Femulator%2Fqemu.git pci-assign: Add MSI affinity support To support guest MSI affinity changes update the MSI message any time the guest writes to the address or data fields. Signed-off-by: Alex Williamson Acked-by: Michael S. Tsirkin Message-id: 20130513201840.5430.86331.stgit@bling.home Signed-off-by: Anthony Liguori --- diff --git a/hw/i386/kvm/pci-assign.c b/hw/i386/kvm/pci-assign.c index c1e08ec1a0..ff855904ba 100644 --- a/hw/i386/kvm/pci-assign.c +++ b/hw/i386/kvm/pci-assign.c @@ -1026,6 +1026,21 @@ static void assigned_dev_update_msi(PCIDevice *pci_dev) } } +static void assigned_dev_update_msi_msg(PCIDevice *pci_dev) +{ + AssignedDevice *assigned_dev = DO_UPCAST(AssignedDevice, dev, pci_dev); + uint8_t ctrl_byte = pci_get_byte(pci_dev->config + pci_dev->msi_cap + + PCI_MSI_FLAGS); + + if (assigned_dev->assigned_irq_type != ASSIGNED_IRQ_MSI || + !(ctrl_byte & PCI_MSI_FLAGS_ENABLE)) { + return; + } + + kvm_irqchip_update_msi_route(kvm_state, assigned_dev->msi_virq[0], + msi_get_message(pci_dev, 0)); +} + static bool assigned_dev_msix_masked(MSIXTableEntry *entry) { return (entry->ctrl & cpu_to_le32(0x1)) != 0; @@ -1201,6 +1216,9 @@ static void assigned_dev_pci_write_config(PCIDevice *pci_dev, uint32_t address, if (range_covers_byte(address, len, pci_dev->msi_cap + PCI_MSI_FLAGS)) { assigned_dev_update_msi(pci_dev); + } else if (ranges_overlap(address, len, /* 32bit MSI only */ + pci_dev->msi_cap + PCI_MSI_ADDRESS_LO, 6)) { + assigned_dev_update_msi_msg(pci_dev); } } if (assigned_dev->cap.available & ASSIGNED_DEVICE_CAP_MSIX) {