Messages in this thread | | | From | "Aneesh Kumar K.V" <> | Subject | Re: [PATCH v8 3/5] powerpc/papr_scm: Fetch nvdimm health information from PHYP | Date | Wed, 27 May 2020 15:24:40 +0530 |
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Vaibhav Jain <vaibhav@linux.ibm.com> writes:
> Implement support for fetching nvdimm health information via > H_SCM_HEALTH hcall as documented in Ref[1]. The hcall returns a pair > of 64-bit bitmap, bitwise-and of which is then stored in > 'struct papr_scm_priv' and subsequently partially exposed to > user-space via newly introduced dimm specific attribute > 'papr/flags'. Since the hcall is costly, the health information is > cached and only re-queried, 60s after the previous successful hcall. > > The patch also adds a documentation text describing flags reported by > the the new sysfs attribute 'papr/flags' is also introduced at > Documentation/ABI/testing/sysfs-bus-papr-scm. > > [1] commit 58b278f568f0 ("powerpc: Provide initial documentation for > PAPR hcalls") >
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
> Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com> > Cc: Dan Williams <dan.j.williams@intel.com> > Cc: Michael Ellerman <mpe@ellerman.id.au> > Cc: Ira Weiny <ira.weiny@intel.com> > Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
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