On 12/1/20 6:17 PM, Pankaj Gupta wrote:
Tha patch implements SCM async-flush hcall and sets the
ND_REGION_ASYNC capability when the platform device tree
has "ibm,async-flush-required" set.
So, you are reusing the existing ND_REGION_ASYNC flag for the
hypercall based async flush with device tree discovery?
Out of curiosity, does virtio based flush work in ppc? Was just thinking
if we can reuse virtio based flush present in virtio-pmem? Or anything
else we are trying to achieve here?
Not with PAPR based pmem driver papr_scm.ko. The devices there are
considered platform device and we use hypercalls to configure the
device. On similar fashion we are now using hypercall to flush the host
based caches.
-aneesh
