linux-kernel - [PATCH 00/13] deprecate pcommit

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Message-ID: <146507355220.8347.12117020810872172684.stgit@dwillia2-desk3.amr.corp.intel.com>
Date:	Sat, 04 Jun 2016 13:52:32 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	linux-nvdimm@...ts.01.org
Cc:	Xiao Guangrong <guangrong.xiao@...ux.intel.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	x86@...nel.org, david@...morbit.com,
	Adrian Hunter <adrian.hunter@...el.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>, hch@....de,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Ingo Molnar <mingo@...hat.com>,
	Andy Lutomirski <luto@...nel.org>,
	Josh Poimboeuf <jpoimboe@...hat.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Borislav Petkov <bp@...e.de>, "H. Peter Anvin" <hpa@...or.com>,
	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 00/13] deprecate pcommit

Platforms supporting NVDIMMs are now required to provide persistence
guarantees once pmem stores are accepted by the memory subsystem.  This
is usually achieved by a platform-level feature known as ADR
(Asynchronous DRAM Refresh) that flushes any memory subsystem write
pending queues on power loss/shutdown.

The 'pcommit' instruction (which has not shipped on any product) is no
longer needed and is deprecated.

---

Dan Williams (13):
      driver core, libnvdimm: disable manual unbind of dimms while region active
      nfit: always associate flush hints
      libnvdimm: introduce nvdimm_flush()
      libnvdimm, nfit: move flush hint mapping to dimm driver
      tools/testing/nvdimm: simulate multiple flush hints per-dimm
      libnvdimm: cycle flush hints per-cpu
      libnvdimm, pmem: use REQ_FUA, REQ_FLUSH for nvdimm_flush()
      fs/dax: remove wmb_pmem()
      libnvdimm, pmem: use nvdimm_flush() for namespace I/O writes
      pmem: kill wmb_pmem()
      Revert "KVM: x86: add pcommit support"
      x86/insn: remove pcommit
      pmem: kill __pmem address space


 Documentation/filesystems/Locking                  |    2 
 arch/powerpc/sysdev/axonram.c                      |    4 -
 arch/x86/include/asm/cpufeatures.h                 |    1 
 arch/x86/include/asm/pmem.h                        |   77 +++----------
 arch/x86/include/asm/special_insns.h               |   46 --------
 arch/x86/include/asm/vmx.h                         |    1 
 arch/x86/include/uapi/asm/vmx.h                    |    4 -
 arch/x86/kvm/cpuid.c                               |    2 
 arch/x86/kvm/cpuid.h                               |    8 -
 arch/x86/kvm/vmx.c                                 |   32 +----
 arch/x86/lib/x86-opcode-map.txt                    |    2 
 drivers/acpi/nfit.c                                |  106 +++++++++++-------
 drivers/acpi/nfit.h                                |    3 -
 drivers/base/base.h                                |    1 
 drivers/base/bus.c                                 |   12 ++
 drivers/base/core.c                                |    1 
 drivers/base/dd.c                                  |    2 
 drivers/block/brd.c                                |    4 -
 drivers/nvdimm/claim.c                             |    2 
 drivers/nvdimm/dimm.c                              |    7 +
 drivers/nvdimm/dimm_devs.c                         |   27 ++++-
 drivers/nvdimm/namespace_devs.c                    |    1 
 drivers/nvdimm/nd-core.h                           |    1 
 drivers/nvdimm/nd.h                                |   15 +++
 drivers/nvdimm/pmem.c                              |   44 +++++---
 drivers/nvdimm/region_devs.c                       |   74 ++++++++++++-
 drivers/s390/block/dcssblk.c                       |    6 +
 fs/dax.c                                           |   13 +-
 include/linux/blkdev.h                             |    6 +
 include/linux/compiler.h                           |    2 
 include/linux/device.h                             |   20 +++
 include/linux/libnvdimm.h                          |   10 ++
 include/linux/nd.h                                 |    2 
 include/linux/pmem.h                               |  117 ++++----------------
 scripts/checkpatch.pl                              |    1 
 tools/objtool/arch/x86/insn/x86-opcode-map.txt     |    2 
 tools/perf/arch/x86/tests/insn-x86-dat-32.c        |    2 
 tools/perf/arch/x86/tests/insn-x86-dat-64.c        |    2 
 tools/perf/arch/x86/tests/insn-x86-dat-src.c       |    4 -
 .../perf/util/intel-pt-decoder/x86-opcode-map.txt  |    2 
 tools/testing/nvdimm/test/nfit.c                   |   55 ++++++---
 41 files changed, 357 insertions(+), 366 deletions(-)