diff options
Diffstat (limited to 'hw/xen')
| -rw-r--r-- | hw/xen/xen_pt_config_init.c | 6 | ||||
| -rw-r--r-- | hw/xen/xen_pt_msi.c | 6 |
2 files changed, 8 insertions, 4 deletions
diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c index 8ccc2e4b9c..de9a20f437 100644 --- a/hw/xen/xen_pt_config_init.c +++ b/hw/xen/xen_pt_config_init.c @@ -1123,8 +1123,8 @@ static int xen_pt_msgctrl_reg_write(XenPCIPassthroughState *s, msi->mapped = true; } msi->flags |= PCI_MSI_FLAGS_ENABLE; - } else { - msi->flags &= ~PCI_MSI_FLAGS_ENABLE; + } else if (msi->mapped) { + xen_pt_msi_disable(s); } /* pass through MSI_ENABLE bit */ @@ -1397,6 +1397,8 @@ static int xen_pt_msixctrl_reg_write(XenPCIPassthroughState *s, if ((*val & PCI_MSIX_FLAGS_ENABLE) && !(*val & PCI_MSIX_FLAGS_MASKALL)) { xen_pt_msix_update(s); + } else if (!(*val & PCI_MSIX_FLAGS_ENABLE) && s->msix->enabled) { + xen_pt_msix_disable(s); } debug_msix_enabled_old = s->msix->enabled; diff --git a/hw/xen/xen_pt_msi.c b/hw/xen/xen_pt_msi.c index 6fbe0cc86b..12b4c4560c 100644 --- a/hw/xen/xen_pt_msi.c +++ b/hw/xen/xen_pt_msi.c @@ -282,7 +282,8 @@ void xen_pt_msi_disable(XenPCIPassthroughState *s) msi->initialized); /* clear msi info */ - msi->flags = 0; + msi->flags &= ~PCI_MSI_FLAGS_ENABLE; + msi->initialized = false; msi->mapped = false; msi->pirq = XEN_PT_UNASSIGNED_PIRQ; } @@ -446,7 +447,8 @@ static void pci_msix_write(void *opaque, hwaddr addr, if (offset != PCI_MSIX_ENTRY_VECTOR_CTRL) { const volatile uint32_t *vec_ctrl; - if (get_entry_value(entry, offset) == val) { + if (get_entry_value(entry, offset) == val + && entry->pirq != XEN_PT_UNASSIGNED_PIRQ) { return; } |