Changeset 87711 in vbox

Timestamp:

Feb 11, 2021 4:53:34 AM (4 years ago)

Author:

vboxsync

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

142755

Message:

AMD IOMMU: bugref:9654 Don't hold PDM lock while reading commands from guest memory, also use the PCI read/write function.

File:

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

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

@@ -4545 +4545 @@
                 /* Read the entire command buffer from memory (avoids multiple PGM calls). */
                 RTGCPHYS const GCPhysCmdBufBase = pThis->CmdBufBaseAddr.n.u40Base << X86_PAGE_4K_SHIFT;
-                int rc = PDMDevHlpPhysRead(pDevIns, GCPhysCmdBufBase, pvCmds, cbCmdBuf);
+
+                IOMMU_UNLOCK(pDevIns, pThisCC);
+                int rc = PDMDevHlpPCIPhysRead(pDevIns, GCPhysCmdBufBase, pvCmds, cbCmdBuf);
+                IOMMU_LOCK(pDevIns, pThisCC);
+
                 if (RT_SUCCESS(rc))
                 {