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authorAmit Shah <amit.shah@redhat.com>2011-12-22 16:58:28 +0530
committerRusty Russell <rusty@rustcorp.com.au>2012-01-12 15:44:45 +1030
commit2b8f41d846990c3c1c8addbaed2cf53c3ef91d25 (patch)
treea3dbf456eb359650db0487d66d3594f1fa7be6c0 /fs
parenta0e2dbfc223028b72a1c193f94fcd3f67253ba4a (diff)
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virtio: console: Add freeze and restore handlers to support S4
Remove all vqs and associated buffers in the freeze callback which prepares us to go into hibernation state. On restore, re-create all the vqs and populate the input vqs with buffers to get to the pre-hibernate state. Note: Any outstanding unconsumed buffers are discarded; which means there's a possibility of data loss in case the host or the guest didn't consume any data already present in the vqs. This can be addressed in a later patch series, perhaps in virtio common code. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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