KVM: s390/mm: new gmap_test_and_clear_dirty function

Browse source

For live migration kvm needs to test and clear the dirty bit of guest pages.

That for is ptep_test_and_clear_user_dirty, to be sure we are not racing with
other code, we protect the pte. This needs to be done within
the architecture memory management code.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

...

This commit is contained in:

Dominik Dingel 2014-03-24 14:27:58 +01:00 • committed by Christian Borntraeger

parent 0a61b222df

commit a0bf4f149b

2 changed files with 23 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

arch/s390/include/asm/pgtable.h

View file

21

arch/s390/mm/pgtable.c

View file