>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(-)
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