FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=release%2F12.3.0 2015-03-30T07:09:07Z 2015-03-30T07:09:07Z Roger Pau Monné royger@FreeBSD.org 2015-03-30T07:09:07Z urn:sha1:df62b8a25f4792a6cd788a2b8e9982466b0ebcb3 Handle the VIRQ_DEBUG signal and print a stack trace of each vCPU on the Xen console. This is only used for debug purposes and is triggered by the administrator of the Xen host. Sponsored by: Citrix Systems R&D MFC after: 1 week