From: Christian Borntraeger Date: Tue, 15 May 2012 12:15:25 +0000 (+0200) Subject: KVM: s390: add capability indicating COW support X-Git-Tag: v3.5-rc1~88^2~4 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1526bf9ccf310f1d35c1275b8b477a249d25aaf2;p=pandora-kernel.git KVM: s390: add capability indicating COW support Currently qemu/kvm on s390 uses a guest mapping that does not allow the guest backing page table to be write-protected to support older systems. On those older systems a host write protection fault will be delivered to the guest. Newer systems allow to write-protect the guest backing memory and let the fault be delivered to the host, thus allowing COW. Use a capability bit to tell qemu if that is possible. Signed-off-by: Christian Borntraeger Acked-by: Heiko Carstens Signed-off-by: Marcelo Tosatti --- Reading git-diff-tree failed