diff mbox series

[ats_vtd,04/22] intel_iommu: do not consider wait_desc as an invalid descriptor

Message ID 20240521130946.117849-5-clement.mathieu--drif@eviden.com (mailing list archive)
State New
Headers show
Series ATS support for VT-d | expand

Commit Message

CLEMENT MATHIEU--DRIF May 21, 2024, 1:11 p.m. UTC 
Signed-off-by: Clément Mathieu--Drif <clement.mathieu--drif@eviden.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
---
 hw/i386/intel_iommu.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index a2b275016c..f71c04d370 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -3476,6 +3476,11 @@  static bool vtd_process_wait_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc)
     } else if (inv_desc->lo & VTD_INV_DESC_WAIT_IF) {
         /* Interrupt flag */
         vtd_generate_completion_event(s);
+    } else if (inv_desc->lo & VTD_INV_DESC_WAIT_FN) {
+        /*
+         * SW = 0, IF = 0, FN = 1
+         * Nothing to do as we process the events sequentially
+         */
     } else {
         error_report_once("%s: invalid wait desc: hi=%"PRIx64", lo=%"PRIx64
                           " (unknown type)", __func__, inv_desc->hi,