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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2012-05-15 14:15:25 +0200 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-05-17 21:06:01 -0300 |
| commit | 1526bf9ccf310f1d35c1275b8b477a249d25aaf2 (patch) | |
| tree | 61c7b138818c52df2dfcdc8a58ee891b198f424e /fs/fhandle.c | |
| parent | d8368af8b46b904def42a0f341d2f4f29001fa77 (diff) | |
| download | op-kernel-dev-1526bf9ccf310f1d35c1275b8b477a249d25aaf2.zip op-kernel-dev-1526bf9ccf310f1d35c1275b8b477a249d25aaf2.tar.gz | |
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 <borntraeger@de.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'fs/fhandle.c')
0 files changed, 0 insertions, 0 deletions
