From: Dominik Dingel <dingel@linux.vnet.ibm.com>
Date: Mon, 24 Mar 2014 13:27:58 +0000 (+0100)
Subject: KVM: s390/mm: new gmap_test_and_clear_dirty function
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~8^2~67^2~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0bf4f149bbfa2e31b5f4172c817afdb7b986733;p=pandora-kernel.git

KVM: s390/mm: new gmap_test_and_clear_dirty function

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>
---

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