Xiao Guangrong 4d8b81abc4 KVM: introduce readonly memslot ...

In current code, if we map a readonly memory space from host to guest
and the page is not currently mapped in the host, we will get a fault
pfn and async is not allowed, then the vm will crash

We introduce readonly memory region to map ROM/ROMD to the guest, read access
is happy for readonly memslot, write access on readonly memslot will cause
KVM_EXIT_MMIO exit

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

2012-08-22 15:09:03 +03:00

..

kvm

KVM: introduce readonly memslot

2012-08-22 15:09:03 +03:00