Author: jhb
Date: Fri Feb 28 19:07:55 2014
New Revision: 262615
URL: http://svnweb.freebsd.org/changeset/base/262615
Log:
Workaround an apparent bug in VMWare Fusion's nested VT support where it
triggers a VM exit with the exit reason of an external interrupt but
without a valid interrupt set in the exit interrupt information.
Tested by: Michael Dexter
Reviewed by: neel
MFC after: 1 week
Modified:
head/sys/amd64/vmm/intel/vmx.c
Modified: head/sys/amd64/vmm/intel/vmx.c
==============================================================================
--- head/sys/amd64/vmm/intel/vmx.c Fri Feb 28 18:29:09 2014
(r262614)
+++ head/sys/amd64/vmm/intel/vmx.c Fri Feb 28 19:07:55 2014
(r262615)
@@ -1827,6 +1827,13 @@ vmx_exit_process(struct vmx *vmx, int vc
* this virtual interrupt during the subsequent VM enter.
*/
intr_info = vmcs_read(VMCS_EXIT_INTR_INFO);
+
+ /*
+ * XXX: Ignore this exit if VMCS_INTR_VALID is not set.
+ * This appears to be a bug in VMWare Fusion?
+ */
+ if (!(intr_info & VMCS_INTR_VALID))
+ return (1);
KASSERT((intr_info & VMCS_INTR_VALID) != 0 &&
(intr_info & VMCS_INTR_T_MASK) == VMCS_INTR_T_HWINTR,
("VM exit interruption info invalid: %#x", intr_info));
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