From: Christian Borntraeger Date: Fri, 17 May 2013 12:41:36 +0000 (+0200) Subject: s390/kvm: Kick guests out of sie if prefix page host pte is touched X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~22^2~63 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c70fe4416d5f6d092b20ebf7d7654835e09c109;p=pandora-kernel.git s390/kvm: Kick guests out of sie if prefix page host pte is touched The guest prefix pages must be mapped writeable all the time while SIE is running, otherwise the guest might see random behaviour. (pinned at the pte level) Turns out that mlocking is not enough, the page table entry (not the page) might change or become r/o. This patch uses the gmap notifiers to kick guest cpus out of SIE. Signed-off-by: Christian Borntraeger Acked-by: Martin Schwidefsky Signed-off-by: Gleb Natapov --- Reading git-diff-tree failed