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Code Issues Releases Activity

Workaround an apparent bug in VMWare Fusion's nested VT support where it

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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
This commit is contained in:
John Baldwin 2014-02-28 19:07:55 +00:00
parent eeb913c99f
commit 722b6744a7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=262615
1 changed files with 7 additions and 0 deletions
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7
sys/amd64/vmm/intel/vmx.c
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@ -1827,6 +1827,13 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
* 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));