linux-toradex.git/tools/testing/nvdimm, branch v5.12-rc5

ndtest: Add papr health related flags

2021-01-28T08:22:49+00:00

sysfs attibutes to show health related flags are added.

Signed-off-by: Santosh Sivaraj 
Link: https://lore.kernel.org/r/20201222042240.2983755-8-santosh@fossix.org
Signed-off-by: Dan Williams

ndtest: Add nvdimm control functions

2021-01-28T08:22:49+00:00

Add functions to support ND_CMD_GET_CONFIG_SIZE, ND_CMD_SET_CONFIG_DATA and
ND_CMD_GET_CONFIG_DATA.

Signed-off-by: Santosh Sivaraj 
Link: https://lore.kernel.org/r/20201222042240.2983755-7-santosh@fossix.org
Signed-off-by: Dan Williams

ndtest: Add regions and mappings to the test buses

2021-01-28T08:22:49+00:00

The bus config array is used to hold the regions and the respective
mappings. This config based interface enables to change the
dimm/region/namespace layouts easily.

Signed-off-by: Santosh Sivaraj 
Link: https://lore.kernel.org/r/20201222042240.2983755-6-santosh@fossix.org
Signed-off-by: Dan Williams

ndtest: Add dimm attributes

2021-01-28T08:22:49+00:00

This patch adds sysfs attributes for nvdimm and the dimm device.

Signed-off-by: Santosh Sivaraj 
Link: https://lore.kernel.org/r/20201222042240.2983755-5-santosh@fossix.org
Signed-off-by: Dan Williams

ndtest: Add dimms to the two buses

2021-01-28T08:22:49+00:00

A config array is used to hold the dimms for each bus. These dimms are
registered with nvdimm, and new nvdimms are created on the buses.

Signed-off-by: Santosh Sivaraj 
Link: https://lore.kernel.org/r/20201222042240.2983755-4-santosh@fossix.org
Signed-off-by: Dan Williams

ndtest: Add compatability string to treat it as PAPR family

2021-01-28T08:22:49+00:00

Since this module is written to be platform agnostic, the module is made
part of the PAPR_FAMILY. ndctl identifies the family using the compatible
string inside of_node dir-entry.

Signed-off-by: Santosh Sivaraj 
Link: https://lore.kernel.org/r/20201222042240.2983755-3-santosh@fossix.org
Signed-off-by: Dan Williams

testing/nvdimm: Add test module for non-nfit platforms

2021-01-28T08:22:48+00:00

The current test module cannot be used for testing platforms (make check)
that do not have support for NFIT. In order to get the ndctl tests working,
we need a module which can emulate NVDIMM devices without relying on
ACPI/NFIT.

The aim of this proposed module is to implement a similar functionality to
the existing module but without the ACPI dependencies.

This RFC series is split into reviewable and compilable chunks.

This patch adds a new driver and registers two nvdimm bus needed for ndctl
make check.

Signed-off-by: Santosh Sivaraj 
Link: https://lore.kernel.org/r/20201222042240.2983755-2-santosh@fossix.org
Signed-off-by: Dan Williams

x86, libnvdimm/test: Remove COPY_MC_TEST

2020-10-26T17:08:35+00:00

The COPY_MC_TEST facility has served its purpose for validating the
early termination conditions of the copy_mc_fragile() implementation.
Remove it and the EXPORT_SYMBOL_GPL of copy_mc_fragile().

Reported-by: Borislav Petkov 
Signed-off-by: Dan Williams 
Signed-off-by: Borislav Petkov 
Link: https://lkml.kernel.org/r/160316688322.3374697.8648308115165836243.stgit@dwillia2-desk3.amr.corp.intel.com

device-dax: add dis-contiguous resource support

2020-10-14T01:38:28+00:00

Break the requirement that device-dax instances are physically contiguous.
With this constraint removed it allows fragmented available capacity to
be fully allocated.

This capability is useful to mitigate the "noisy neighbor" problem with
memory-side-cache management for virtual machines, or any other scenario
where a platform address boundary also designates a performance boundary.
For example a direct mapped memory side cache might rotate cache colors at
1GB boundaries.  With dis-contiguous allocations a device-dax instance
could be configured to contain only 1 cache color.

It also satisfies Joao's use case (see link) for partitioning memory for
exclusive guest access.  It allows for a future potential mode where the
host kernel need not allocate 'struct page' capacity up-front.

Reported-by: Joao Martins 
Signed-off-by: Dan Williams 
Signed-off-by: Andrew Morton 
Cc: Andy Lutomirski 
Cc: Ard Biesheuvel 
Cc: Ard Biesheuvel 
Cc: Benjamin Herrenschmidt 
Cc: Ben Skeggs 
Cc: Bjorn Helgaas 
Cc: Borislav Petkov 
Cc: Boris Ostrovsky 
Cc: Brice Goglin 
Cc: Catalin Marinas 
Cc: Daniel Vetter 
Cc: Dave Hansen 
Cc: Dave Jiang 
Cc: David Airlie 
Cc: David Hildenbrand 
Cc: Greg Kroah-Hartman 
Cc: "H. Peter Anvin" 
Cc: Hulk Robot 
Cc: Ingo Molnar 
Cc: Ira Weiny 
Cc: Jason Gunthorpe 
Cc: Jason Yan 
Cc: Jeff Moyer 
Cc: "Jérôme Glisse" 
Cc: Jia He 
Cc: Jonathan Cameron 
Cc: Juergen Gross 
Cc: kernel test robot 
Cc: Michael Ellerman 
Cc: Mike Rapoport 
Cc: Paul Mackerras 
Cc: Pavel Tatashin 
Cc: Peter Zijlstra 
Cc: "Rafael J. Wysocki" 
Cc: Randy Dunlap 
Cc: Stefano Stabellini 
Cc: Thomas Gleixner 
Cc: Tom Lendacky 
Cc: Vishal Verma 
Cc: Vivek Goyal 
Cc: Wei Yang 
Cc: Will Deacon 
Link: https://lore.kernel.org/lkml/20200110190313.17144-1-joao.m.martins@oracle.com/
Link: https://lkml.kernel.org/r/159643104304.4062302.16561669534797528660.stgit@dwillia2-desk3.amr.corp.intel.com
Link: https://lkml.kernel.org/r/160106116875.30709.11456649969327399771.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Linus Torvalds

mm/memremap_pages: convert to 'struct range'

2020-10-14T01:38:28+00:00

The 'struct resource' in 'struct dev_pagemap' is only used for holding
resource span information.  The other fields, 'name', 'flags', 'desc',
'parent', 'sibling', and 'child' are all unused wasted space.

This is in preparation for introducing a multi-range extension of
devm_memremap_pages().

The bulk of this change is unwinding all the places internal to libnvdimm
that used 'struct resource' unnecessarily, and replacing instances of
'struct dev_pagemap'.res with 'struct dev_pagemap'.range.

P2PDMA had a minor usage of the resource flags field, but only to report
failures with "%pR".  That is replaced with an open coded print of the
range.

[dan.carpenter@oracle.com: mm/hmm/test: use after free in dmirror_allocate_chunk()]
  Link: https://lkml.kernel.org/r/20200926121402.GA7467@kadam

Signed-off-by: Dan Williams 
Signed-off-by: Dan Carpenter 
Signed-off-by: Andrew Morton 
Reviewed-by: Boris Ostrovsky 	[xen]
Cc: Paul Mackerras 
Cc: Michael Ellerman 
Cc: Benjamin Herrenschmidt 
Cc: Vishal Verma 
Cc: Vivek Goyal 
Cc: Dave Jiang 
Cc: Ben Skeggs 
Cc: David Airlie 
Cc: Daniel Vetter 
Cc: Ira Weiny 
Cc: Bjorn Helgaas 
Cc: Juergen Gross 
Cc: Stefano Stabellini 
Cc: "Jérôme Glisse" 
Cc: Andy Lutomirski 
Cc: Ard Biesheuvel 
Cc: Ard Biesheuvel 
Cc: Borislav Petkov 
Cc: Brice Goglin 
Cc: Catalin Marinas 
Cc: Dave Hansen 
Cc: David Hildenbrand 
Cc: Greg Kroah-Hartman 
Cc: "H. Peter Anvin" 
Cc: Hulk Robot 
Cc: Ingo Molnar 
Cc: Jason Gunthorpe 
Cc: Jason Yan 
Cc: Jeff Moyer 
Cc: Jia He 
Cc: Joao Martins 
Cc: Jonathan Cameron 
Cc: kernel test robot 
Cc: Mike Rapoport 
Cc: Pavel Tatashin 
Cc: Peter Zijlstra 
Cc: "Rafael J. Wysocki" 
Cc: Randy Dunlap 
Cc: Thomas Gleixner 
Cc: Tom Lendacky 
Cc: Wei Yang 
Cc: Will Deacon 
Link: https://lkml.kernel.org/r/159643103173.4062302.768998885691711532.stgit@dwillia2-desk3.amr.corp.intel.com
Link: https://lkml.kernel.org/r/160106115761.30709.13539840236873663620.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Linus Torvalds