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| author | Florian Funke <ffunke@de.ibm.com> | 2008-10-10 21:33:26 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-10-10 21:34:00 +0200 |
| commit | 15e86b0c752d50e910b2cca6e83ce74c4440d06c (patch) | |
| tree | c17e8e71362bb9432e215a01bbd671c76216d262 /drivers/s390/char | |
| parent | ab1d848fd6a9151b02c6cbf4bddce6e24707b094 (diff) | |
[S390] introduce dirty bit for kvm live migration
This patch defines a dirty bit in the PGSTE that can be used to implement
dirty pages logging for KVM's live migration. The bit is set in the
ptep_rcp_copy function, which is called to save dirty and referenced information
from the storage key in the PGSTE. The bit can be tested and reset by KVM using
the kvm_s390_test_and_clear_page_dirty function that is introduced by this patch.
Acked-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Florian Funke <ffunke@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/char')
0 files changed, 0 insertions, 0 deletions