e891b198f424e parent d8368af8b46b904def42a0f341d2f4f29001fa77 author Christian Borntraeger 1337084125 +0200 committer Marcelo Tosatti 1337299561 -0300 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 }Ï) ›Gx