On 07/22/2013 12:49 AM, Orit Wasserman wrote: > Older KVM versions save CS dpl value to an invalid value for real mode guests > (0x3). This patch detect this situation when loading CPU state and set all the > segments dpl to zero. > This will allow migration from older KVM on host without unrestricted guest > to hosts with restricted guest support. > For example migration from a Penryn host (with kernel 2.6.32) to > a Westmere host.
> + /* > + Real mode guest segments register DPL should be zero. > + Older KVM version were setting it worngly. s/worngly/wrongly/ > + Fixing it will allow live migration from such host that don't have > + restricted guest support to an host with unrestricted guest support s/an host/a host/ -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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