From: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: <linux-cxl@vger.kernel.org>, <nvdimm@lists.linux.dev>,
<ben.widawsky@intel.com>, <vishal.l.verma@intel.com>,
<alison.schofield@intel.com>, <ira.weiny@intel.com>
Subject: Re: [PATCH 07/23] libnvdimm/labels: Add type-guid helpers
Date: Wed, 11 Aug 2021 19:46:05 +0100 [thread overview]
Message-ID: <20210811194605.00003c46@Huawei.com> (raw)
In-Reply-To: <162854810459.1980150.1781727637396465986.stgit@dwillia2-desk3.amr.corp.intel.com>
On Mon, 9 Aug 2021 15:28:24 -0700
Dan Williams <dan.j.williams@intel.com> wrote:
> In preparation for CXL label support, which does not have the type-guid
> concept, wrap the existing users with nsl_set_type_guid, and
> nsl_validate_type_guid. Recall that the type-guid is a value in the ACPI
> NFIT table to indicate how the memory range is used / should be
> presented to upper layers.
>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> ---
> drivers/nvdimm/label.c | 26 ++++++++++++++++++++++----
> drivers/nvdimm/namespace_devs.c | 19 ++++---------------
> drivers/nvdimm/nd.h | 2 ++
> 3 files changed, 28 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c
> index 7188675c0955..294ffc3cb582 100644
> --- a/drivers/nvdimm/label.c
> +++ b/drivers/nvdimm/label.c
> @@ -772,6 +772,26 @@ static void reap_victim(struct nd_mapping *nd_mapping,
> victim->label = NULL;
> }
>
> +static void nsl_set_type_guid(struct nvdimm_drvdata *ndd,
> + struct nd_namespace_label *nd_label, guid_t *guid)
> +{
> + if (namespace_label_has(ndd, type_guid))
> + guid_copy(&nd_label->type_guid, guid);
> +}
> +
> +bool nsl_validate_type_guid(struct nvdimm_drvdata *ndd,
> + struct nd_namespace_label *nd_label, guid_t *guid)
> +{
> + if (!namespace_label_has(ndd, type_guid))
> + return true;
> + if (!guid_equal(&nd_label->type_guid, guid)) {
> + dev_dbg(ndd->dev, "expect type_guid %pUb got %pUb\n", guid,
> + &nd_label->type_guid);
> + return false;
> + }
> + return true;
> +}
> +
> static int __pmem_label_update(struct nd_region *nd_region,
> struct nd_mapping *nd_mapping, struct nd_namespace_pmem *nspm,
> int pos, unsigned long flags)
> @@ -822,8 +842,7 @@ static int __pmem_label_update(struct nd_region *nd_region,
> nsl_set_lbasize(ndd, nd_label, nspm->lbasize);
> nsl_set_dpa(ndd, nd_label, res->start);
> nsl_set_slot(ndd, nd_label, slot);
> - if (namespace_label_has(ndd, type_guid))
> - guid_copy(&nd_label->type_guid, &nd_set->type_guid);
> + nsl_set_type_guid(ndd, nd_label, &nd_set->type_guid);
> if (namespace_label_has(ndd, abstraction_guid))
> guid_copy(&nd_label->abstraction_guid,
> to_abstraction_guid(ndns->claim_class,
> @@ -1091,8 +1110,7 @@ static int __blk_label_update(struct nd_region *nd_region,
> nsl_set_rawsize(ndd, nd_label, resource_size(res));
> nsl_set_lbasize(ndd, nd_label, nsblk->lbasize);
> nsl_set_slot(ndd, nd_label, slot);
> - if (namespace_label_has(ndd, type_guid))
> - guid_copy(&nd_label->type_guid, &nd_set->type_guid);
> + nsl_set_type_guid(ndd, nd_label, &nd_set->type_guid);
> if (namespace_label_has(ndd, abstraction_guid))
> guid_copy(&nd_label->abstraction_guid,
> to_abstraction_guid(ndns->claim_class,
> diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
> index fbd0c2fcea4a..af5a31dd3147 100644
> --- a/drivers/nvdimm/namespace_devs.c
> +++ b/drivers/nvdimm/namespace_devs.c
> @@ -1859,14 +1859,9 @@ static bool has_uuid_at_pos(struct nd_region *nd_region, u8 *uuid,
> if (memcmp(nd_label->uuid, uuid, NSLABEL_UUID_LEN) != 0)
> continue;
>
> - if (namespace_label_has(ndd, type_guid)
> - && !guid_equal(&nd_set->type_guid,
> - &nd_label->type_guid)) {
> - dev_dbg(ndd->dev, "expect type_guid %pUb got %pUb\n",
> - &nd_set->type_guid,
> - &nd_label->type_guid);
> + if (!nsl_validate_type_guid(ndd, nd_label,
> + &nd_set->type_guid))
> continue;
> - }
>
> if (found_uuid) {
> dev_dbg(ndd->dev, "duplicate entry for uuid\n");
> @@ -2265,14 +2260,8 @@ static struct device *create_namespace_blk(struct nd_region *nd_region,
> struct device *dev = NULL;
> struct resource *res;
>
> - if (namespace_label_has(ndd, type_guid)) {
> - if (!guid_equal(&nd_set->type_guid, &nd_label->type_guid)) {
> - dev_dbg(ndd->dev, "expect type_guid %pUb got %pUb\n",
> - &nd_set->type_guid,
> - &nd_label->type_guid);
> - return ERR_PTR(-EAGAIN);
> - }
> - }
> + if (!nsl_validate_type_guid(ndd, nd_label, &nd_set->type_guid))
> + return ERR_PTR(-EAGAIN);
> if (!nsl_validate_blk_isetcookie(ndd, nd_label, nd_set->cookie2))
> return ERR_PTR(-EAGAIN);
>
> diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
> index 2a9a608b7f17..f3c364df9449 100644
> --- a/drivers/nvdimm/nd.h
> +++ b/drivers/nvdimm/nd.h
> @@ -179,6 +179,8 @@ static inline void nsl_set_lbasize(struct nvdimm_drvdata *ndd,
> bool nsl_validate_blk_isetcookie(struct nvdimm_drvdata *ndd,
> struct nd_namespace_label *nd_label,
> u64 isetcookie);
> +bool nsl_validate_type_guid(struct nvdimm_drvdata *ndd,
> + struct nd_namespace_label *nd_label, guid_t *guid);
>
> struct nd_region_data {
> int ns_count;
>
next prev parent reply other threads:[~2021-08-11 18:46 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-09 22:27 [PATCH 00/23] cxl_test: Enable CXL Topology and UAPI regression tests Dan Williams
2021-08-09 22:27 ` [PATCH 01/23] libnvdimm/labels: Introduce getters for namespace label fields Dan Williams
2021-08-10 20:48 ` Ben Widawsky
2021-08-10 21:58 ` Dan Williams
2021-08-11 18:44 ` Jonathan Cameron
2021-08-09 22:27 ` [PATCH 02/23] libnvdimm/labels: Add isetcookie validation helper Dan Williams
2021-08-11 18:44 ` Jonathan Cameron
2021-08-09 22:28 ` [PATCH 03/23] libnvdimm/labels: Introduce label setter helpers Dan Williams
2021-08-11 17:27 ` Jonathan Cameron
2021-08-11 17:42 ` Dan Williams
2021-08-09 22:28 ` [PATCH 04/23] libnvdimm/labels: Add a checksum calculation helper Dan Williams
2021-08-11 18:44 ` Jonathan Cameron
2021-08-09 22:28 ` [PATCH 05/23] libnvdimm/labels: Add blk isetcookie set / validation helpers Dan Williams
2021-08-11 18:45 ` Jonathan Cameron
2021-08-09 22:28 ` [PATCH 06/23] libnvdimm/labels: Add blk special cases for nlabel and position helpers Dan Williams
2021-08-11 18:45 ` Jonathan Cameron
2021-08-09 22:28 ` [PATCH 07/23] libnvdimm/labels: Add type-guid helpers Dan Williams
2021-08-11 18:46 ` Jonathan Cameron [this message]
2021-08-09 22:28 ` [PATCH 08/23] libnvdimm/labels: Add claim class helpers Dan Williams
2021-08-11 18:46 ` Jonathan Cameron
2021-08-09 22:28 ` [PATCH 09/23] libnvdimm/labels: Add address-abstraction uuid definitions Dan Williams
2021-08-11 18:49 ` Jonathan Cameron
2021-08-11 22:47 ` Dan Williams
2021-08-09 22:28 ` [PATCH 10/23] libnvdimm/labels: Add uuid helpers Dan Williams
2021-08-11 8:05 ` Andy Shevchenko
2021-08-11 16:59 ` Andy Shevchenko
2021-08-11 17:11 ` Dan Williams
2021-08-11 19:18 ` Andy Shevchenko
2021-08-11 19:26 ` Dan Williams
2021-08-12 22:34 ` Dan Williams
2021-08-13 10:14 ` Andy Shevchenko
2021-08-14 7:35 ` Christoph Hellwig
2021-08-11 18:13 ` Jonathan Cameron
2021-08-12 21:17 ` Dan Williams
2021-08-09 22:28 ` [PATCH 11/23] libnvdimm/labels: Introduce CXL labels Dan Williams
2021-08-11 18:41 ` Jonathan Cameron
2021-08-11 23:01 ` Dan Williams
2021-08-09 22:28 ` [PATCH 12/23] cxl/pci: Make 'struct cxl_mem' device type generic Dan Williams
2021-08-09 22:28 ` [PATCH 13/23] cxl/mbox: Introduce the mbox_send operation Dan Williams
2021-08-09 22:29 ` [PATCH 14/23] cxl/mbox: Move mailbox and other non-PCI specific infrastructure to the core Dan Williams
2021-08-11 6:11 ` [PATCH v2 " Dan Williams
2021-08-09 22:29 ` [PATCH 15/23] cxl/pci: Use module_pci_driver Dan Williams
2021-08-09 22:29 ` [PATCH 16/23] cxl/mbox: Convert 'enabled_cmds' to DECLARE_BITMAP Dan Williams
2021-08-09 22:29 ` [PATCH 17/23] cxl/mbox: Add exclusive kernel command support Dan Williams
2021-08-10 21:34 ` Ben Widawsky
2021-08-10 21:52 ` Dan Williams
2021-08-10 22:06 ` Ben Widawsky
2021-08-11 1:22 ` Dan Williams
2021-08-11 2:14 ` Dan Williams
2021-08-09 22:29 ` [PATCH 18/23] cxl/pmem: Translate NVDIMM label commands to CXL label commands Dan Williams
2021-08-09 22:29 ` [PATCH 19/23] cxl/pmem: Add support for multiple nvdimm-bridge objects Dan Williams
2021-08-09 22:29 ` [PATCH 20/23] tools/testing/cxl: Introduce a mocked-up CXL port hierarchy Dan Williams
2021-08-10 21:57 ` Ben Widawsky
2021-08-10 22:40 ` Dan Williams
2021-08-11 15:18 ` Ben Widawsky
[not found] ` <xp0k4.l2r85dw1p7do@intel.com>
2021-08-11 21:03 ` Dan Williams
2021-08-09 22:29 ` [PATCH 21/23] cxl/bus: Populate the target list at decoder create Dan Williams
2021-08-09 22:29 ` [PATCH 22/23] cxl/mbox: Move command definitions to common location Dan Williams
2021-08-09 22:29 ` [PATCH 23/23] tools/testing/cxl: Introduce a mock memory device + driver Dan Williams
2021-08-10 22:10 ` [PATCH 00/23] cxl_test: Enable CXL Topology and UAPI regression tests Ben Widawsky
2021-08-10 22:58 ` Dan Williams
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210811194605.00003c46@Huawei.com \
--to=jonathan.cameron@huawei.com \
--cc=alison.schofield@intel.com \
--cc=ben.widawsky@intel.com \
--cc=dan.j.williams@intel.com \
--cc=ira.weiny@intel.com \
--cc=linux-cxl@vger.kernel.org \
--cc=nvdimm@lists.linux.dev \
--cc=vishal.l.verma@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).