Re: [Xen-devel] [PATCH 17/18] xen/arm: Prevent slipping hypervisor SError to guest

2017-03-20 Thread Stefano Stabellini
On Mon, 13 Mar 2017, Wei Chen wrote: > If there is a pending SError while we're returning from trap. If the > SError handle option is "DIVERSE", we have to prevent slipping this > hypervisor SError to guest. So we have to use the dsb/isb to guarantee > that the pending hypervisor SError would be

[Xen-devel] [PATCH 17/18] xen/arm: Prevent slipping hypervisor SError to guest

2017-03-13 Thread Wei Chen
If there is a pending SError while we're returning from trap. If the SError handle option is "DIVERSE", we have to prevent slipping this hypervisor SError to guest. So we have to use the dsb/isb to guarantee that the pending hypervisor SError would be caught in hypervisor before return to guest.