linux-kernel - [PATCH 0/5] acpi, nfit: acpi_nfit

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Date:   Tue, 06 Dec 2016 16:39:20 -0800
From:   Dan Williams <dan.j.williams@...el.com>
To:     linux-nvdimm@...ts.01.org
Cc:     Vishal Verma <vishal.l.verma@...el.com>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        linux-acpi@...r.kernel.org
Subject: [PATCH 0/5] acpi, nfit: acpi_nfit_ctl() corner case fixes + tests

>>From [PATCH 5/5] tools/testing/nvdimm: unit test acpi_nfit_ctl():
---

A recent flurry of bug discoveries in the nfit driver's DSM marshalling
routine has highlighted the fact that we do not have unit test coverage
for this routine. Add a self-test of acpi_nfit_ctl() routine before
probing the "nfit_test.0" device. This mocks stimulus to acpi_nfit_ctl()
and if any of the tests fail "nfit_test.0" will be unavailable causing
the rest of the tests to not run / fail.

This unit test will also be a place to land reproductions of quirky
BIOS behavior discovered in the field and ensure the kernel does not
regress against implementations it has seen in practice.

---

The problems addressed in this round of fixes date are concentrated
around the variable-length output from the ARS (Address Range Scrub)
Status command, and the proper handling of per-command extended status
values.

They are urgent as improper handling of ARS commands can lead to a
platform that fails to boot. If there are media errors in the boot path
on a platform that does not support machine-check recovery we rely on
the ARS to inform the pmem driver which address ranges may trigger a
machine-check when read.

---

Dan Williams (4):
      acpi, nfit, libnvdimm: fix / harden ars_status output length handling
      acpi, nfit: validate ars_status output buffer size
      acpi, nfit: fix bus vs dimm confusion in xlat_status
      tools/testing/nvdimm: unit test acpi_nfit_ctl()

Vishal Verma (1):
      acpi, nfit: fix extended status translations for ACPI DSMs

 drivers/acpi/nfit/core.c              |   54 +++++---
 drivers/acpi/nfit/nfit.h              |    2 
 drivers/nvdimm/bus.c                  |   25 +++
 include/linux/libnvdimm.h             |    2 
 tools/testing/nvdimm/Kbuild           |    1 
 tools/testing/nvdimm/test/iomap.c     |   23 +++
 tools/testing/nvdimm/test/nfit.c      |  236 ++++++++++++++++++++++++++++++++-
 tools/testing/nvdimm/test/nfit_test.h |    8 +
 8 files changed, 324 insertions(+), 27 deletions(-)