Author: grehan
Date: Thu Aug 1 05:59:28 2013
New Revision: 253854
URL: http://svnweb.freebsd.org/changeset/base/253854
Log:
Moved clearing of vmm_initialized to avoid the case
of unloading the module while VMs existed. This would
result in EBUSY, but would prevent further operations
on VMs resulting in the module being impossible to
unload.
Submitted by: Tycho Nightingale (tycho.nightingale <at>
plurisbusnetworks.com)
Reviewed by: grehan, neel
Modified:
head/sys/amd64/vmm/vmm.c
Modified: head/sys/amd64/vmm/vmm.c
==============================================================================
--- head/sys/amd64/vmm/vmm.c Thu Aug 1 05:50:42 2013 (r253853)
+++ head/sys/amd64/vmm/vmm.c Thu Aug 1 05:59:28 2013 (r253854)
@@ -224,8 +224,13 @@ vmm_handler(module_t mod, int what, void
iommu_cleanup();
vmm_ipi_cleanup();
error = VMM_CLEANUP();
+ /*
+ * Something bad happened - prevent new
+ * VMs from being created
+ */
+ if (error)
+ vmm_initialized = 0;
}
- vmm_initialized = 0;
break;
default:
error = 0;
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