Florian Funke 15e86b0c75 [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>		2008-10-10 21:34:00 +02:00
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asm	[S390] introduce dirty bit for kvm live migration	2008-10-10 21:34:00 +02:00