Changeset 90505 in vbox for trunk/src/VBox/Devices/Bus

Timestamp:

Aug 4, 2021 5:17:28 AM (4 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

146109

Message:

AMD IOMMU: bugref:9654 Allow invalidations for page sizes larger than 4 GB, since address bits 51:32 can be used to encode page sizes greater that 4 GB.

File:

• trunk/src/VBox/Devices/Bus/DevIommuAmd.cpp (modified) (1 diff)

trunk/src/VBox/Devices/Bus/DevIommuAmd.cpp ¶

@@ -5023 +5023 @@
                  * See AMD IOMMU spec. 2.2.3 "I/O Page Tables for Host Translations".
                  */
-                if (   cShift == 12 /* 4K  */ || cShift == 13 /* 8K  */
-                    || cShift == 14 /* 16K */ || cShift == 20 /* 1M  */
-                    || cShift == 22 /* 4M  */ || cShift == 32 /* 4G  */)
+                if (   cShift >= 12 /* 4 KB */
+                    && cShift <= 51 /* 2 PB */)
                 {
                     /* Remove the range of I/O virtual addresses requesting to be invalidated. */