Vaibhav Jain <[email protected]> writes: > In case an nvdimm is found to be unarmed during probe then set its > NDD_UNARMED flag before nvdimm_create(). This would enforce a > read-only access to the ndimm region. Presently even if an nvdimm is > unarmed its not marked as read-only on ppc64 guests. > > The patch updates papr_scm_nvdimm_init() to force query of nvdimm > health via __drc_pmem_query_health() and if nvdimm is found to be > unarmed then set the nvdimm flag ND_UNARMED for nvdimm_create(). >
Reviewed-by: Aneesh Kumar K.V <[email protected]> > Signed-off-by: Vaibhav Jain <[email protected]> > --- > arch/powerpc/platforms/pseries/papr_scm.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/arch/powerpc/platforms/pseries/papr_scm.c > b/arch/powerpc/platforms/pseries/papr_scm.c > index 835163f54244..7e8168e19427 100644 > --- a/arch/powerpc/platforms/pseries/papr_scm.c > +++ b/arch/powerpc/platforms/pseries/papr_scm.c > @@ -914,6 +914,15 @@ static int papr_scm_nvdimm_init(struct papr_scm_priv *p) > dimm_flags = 0; > set_bit(NDD_LABELING, &dimm_flags); > > + /* > + * Check if the nvdimm is unarmed. No locking needed as we are still > + * initializing. Ignore error encountered if any. > + */ > + __drc_pmem_query_health(p); > + > + if (p->health_bitmap & PAPR_PMEM_UNARMED_MASK) > + set_bit(NDD_UNARMED, &dimm_flags); > + > p->nvdimm = nvdimm_create(p->bus, p, papr_nd_attr_groups, > dimm_flags, PAPR_SCM_DIMM_CMD_MASK, 0, NULL); > if (!p->nvdimm) { > -- > 2.30.2 > _______________________________________________ > Linux-nvdimm mailing list -- [email protected] > To unsubscribe send an email to [email protected] _______________________________________________ Linux-nvdimm mailing list -- [email protected] To unsubscribe send an email to [email protected]
