> > > This patch adds virtio-pmem driver for KVM guest. > > > > Guest reads the persistent memory range information from > > Qemu over VIRTIO and registers it on nvdimm_bus. It also > > creates a nd_region object with the persistent memory > > range information so that existing 'nvdimm/pmem' driver > > can reserve this into system memory map. This way > > 'virtio-pmem' driver uses existing functionality of pmem > > driver to register persistent memory compatible for DAX > > capable filesystems. > > > > This also provides function to perform guest flush over > > VIRTIO from 'pmem' driver when userspace performs flush > > on DAX memory range. > > > > Signed-off-by: Pankaj Gupta <pagupta@xxxxxxxxxx> > > Reviewed-by: Yuval Shaia <yuval.shaia@xxxxxxxxxx> > > Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx> > > Acked-by: Jakub Staron <jstaron@xxxxxxxxxx> > > Tested-by: Jakub Staron <jstaron@xxxxxxxxxx> > > --- > > drivers/nvdimm/Makefile | 1 + > > drivers/nvdimm/nd_virtio.c | 125 +++++++++++++++++++++++++++++++ > > drivers/nvdimm/virtio_pmem.c | 122 ++++++++++++++++++++++++++++++ > > drivers/nvdimm/virtio_pmem.h | 55 ++++++++++++++ > > drivers/virtio/Kconfig | 11 +++ > > include/uapi/linux/virtio_ids.h | 1 + > > include/uapi/linux/virtio_pmem.h | 35 +++++++++ > > 7 files changed, 350 insertions(+) > > create mode 100644 drivers/nvdimm/nd_virtio.c > > create mode 100644 drivers/nvdimm/virtio_pmem.c > > create mode 100644 drivers/nvdimm/virtio_pmem.h > > create mode 100644 include/uapi/linux/virtio_pmem.h > > Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx> Thank you Cornelia for the review. Best regards, Pankaj > >
