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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-03-08 11:54:42 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-06-20 09:46:49 +0200 |
| commit | b2d73b2a0ad1c758cb0c1acb01a911744b845942 (patch) | |
| tree | 1b88c5ba8120fc53fc4c9ecb7993e73a7e68c664 /tools/perf/scripts/python | |
| parent | s390/mm: use RCU for gmap notifier list and the per-mm gmap list (diff) | |
| download | linux-b2d73b2a0ad1c758cb0c1acb01a911744b845942.tar.gz linux-b2d73b2a0ad1c758cb0c1acb01a911744b845942.zip | |
s390/mm: extended gmap pte notifier
The current gmap pte notifier forces a pte into to a read-write state.
If the pte is invalidated the gmap notifier is called to inform KVM
that the mapping will go away.
Extend this approach to allow read-write, read-only and no-access
as possible target states and call the pte notifier for any change
to the pte.
This mechanism is used to temporarily set specific access rights for
a pte without doing the heavy work of a true mprotect call.
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions