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由 Dr. David Alan Gilbert 提交于
If a migration happens just after the guest has kicked off an ATAPI command and kicked off DMA, we lose the atapi_dma flag, and the destination tries to complete the command as PIO rather than DMA. This upsets Linux; modern libata based kernels stumble and recover OK, older kernels end up passing bad data to userspace. Signed-off-by: NDr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: NJohn Snow <jsnow@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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