Hi james,

On 2017/11/15 0:03, James Morse wrote:

quoted

Hope this helps?

Yes, I'll go looking for a way to expose VSESR_EL2 to user-space.

what is the purpose to expose VSESR_EL2?
do you mean set its value after migration?

May be we can use similar below Mechanism
https://www.spinics.net/lists/arm-kernel/msg603525.html

when user-space sync the register status, it will get these register value.
it will reuse the IOCTL KVM_GET_ONE_REG and no need to add extra API.

Thanks!

James