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-rw-r--r--virtio-v1.0-wd01-part1-specification.txt7
1 files changed, 0 insertions, 7 deletions
diff --git a/virtio-v1.0-wd01-part1-specification.txt b/virtio-v1.0-wd01-part1-specification.txt
index c9f3cf3..18cb6b6 100644
--- a/virtio-v1.0-wd01-part1-specification.txt
+++ b/virtio-v1.0-wd01-part1-specification.txt
@@ -1703,13 +1703,6 @@ Notification mechanisms did not change.
S/390 based virtual machines support neither PCI nor MMIO, so a
different transport is needed there.
-The old s390-virtio mechanism used a special page mapped above
-the guest's memory and several diagnose calls (hypercalls); it
-does have some drawbacks, however, like a rather limited number
-of devices and very restricted hotplug support. Moreover, device
-discovery and operation differ from other environments on the
-S/390 platform.
-
virtio-ccw uses the standard channel I/O based mechanism used for
the majority of devices on S/390. A virtual channel device with a
special control unit type acts as proxy to the virtio device