HMVMXR0.cpp

Timestamp:

Jul 3, 2019 5:24:41 AM (6 years ago)

Author:

vboxsync

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

131750

Message:

VMM/HMVMXR0: Nested VMX: bugref:9180 Comment.

File:

trunk/src/VBox/VMM/VMMR0/HMVMXR0.cpp

-              r79485
+              r79486
          * never executed before, flag that we need to export the host state before executing
          * guest/nested-guest code using hardware-assisted VMX.
+         *
+         * This could probably be done in a preemptible context since the preemption hook
+         * will flag the necessary change in host context. However, since preemption is
+         * already disabled and to avoid making assumptions about host specific code in
+         * RTMpCpuId when called with preemption enabled, we'll do this while preemption is
+         * disabled.
          */
         if (pVmcsInfoTo->idHostCpu == RTMpCpuId())

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