diff options
| -rw-r--r-- | hw/i386/intel_iommu.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 83c5e44413..4e7ad3a290 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2857,7 +2857,13 @@ static bool vtd_process_wait_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) vtd_generate_completion_event(s); } - if (!(inv_desc->lo & (VTD_INV_DESC_WAIT_IF | VTD_INV_DESC_WAIT_SW))) { + /* + * SW=0, IF=0, FN=1 is also a valid descriptor (VT-d 7.10) + * Nothing to do as we process the descriptors in order + */ + + if (!(inv_desc->lo & (VTD_INV_DESC_WAIT_IF | VTD_INV_DESC_WAIT_SW | + VTD_INV_DESC_WAIT_FN))) { error_report_once("%s: invalid wait desc: hi=%"PRIx64", lo=%"PRIx64 " (unknown type)", __func__, inv_desc->hi, inv_desc->lo); |