linux-kernel - Re: [PATCH v8 5/5] powerpc/papr_scm: Implement support for PAPR_SCM_PDSM

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Date:   Wed, 27 May 2020 15:25:45 +0530
From:   "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
To:     Vaibhav Jain <vaibhav@...ux.ibm.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-nvdimm@...ts.01.org,
        linux-kernel@...r.kernel.org
Cc:     Vaibhav Jain <vaibhav@...ux.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH v8 5/5] powerpc/papr_scm: Implement support for
 PAPR_SCM_PDSM_HEALTH

Vaibhav Jain <vaibhav@...ux.ibm.com> writes:

> This patch implements support for PDSM request 'PAPR_SCM_PDSM_HEALTH'
> that returns a newly introduced 'struct nd_papr_pdsm_health' instance
> containing dimm health information back to user space in response to
> ND_CMD_CALL. This functionality is implemented in newly introduced
> papr_scm_get_health() that queries the scm-dimm health information and
> then copies this information to the package payload whose layout is
> defined by 'struct nd_papr_pdsm_health'.
>
> The patch also introduces a new member 'struct papr_scm_priv.health'
> thats an instance of 'struct nd_papr_pdsm_health' to cache the health
> information of a nvdimm. As a result functions drc_pmem_query_health()
> and flags_show() are updated to populate and use this new struct
> instead of a u64 integer that was earlier used.
>

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@...ux.ibm.com>

> Cc: "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>
> Cc: Dan Williams <dan.j.williams@...el.com>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Ira Weiny <ira.weiny@...el.com>
> Signed-off-by: Vaibhav Jain <vaibhav@...ux.ibm.com>

-aneesh