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12f03ee606
1/ Introduce ZONE_DEVICE and devm_memremap_pages() as a generic
mechanism for adding device-driver-discovered memory regions to the
kernel's direct map. This facility is used by the pmem driver to
enable pfn_to_page() operations on the page frames returned by DAX
('direct_access' in 'struct block_device_operations'). For now, the
'memmap' allocation for these "device" pages comes from "System
RAM". Support for allocating the memmap from device memory will
arrive in a later kernel.
2/ Introduce memremap() to replace usages of ioremap_cache() and
ioremap_wt(). memremap() drops the __iomem annotation for these
mappings to memory that do not have i/o side effects. The
replacement of ioremap_cache() with memremap() is limited to the
pmem driver to ease merging the api change in v4.3. Completion of
the conversion is targeted for v4.4.
3/ Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem
driver, update the VFS DAX implementation and PMEM api to provide
persistence guarantees for kernel operations on a DAX mapping.
4/ Convert the ACPI NFIT 'BLK' driver to map the block apertures as
cacheable to improve performance.
5/ Miscellaneous updates and fixes to libnvdimm including support
for issuing "address range scrub" commands, clarifying the optimal
'sector size' of pmem devices, a clarification of the usage of the
ACPI '_STA' (status) property for DIMM devices, and other minor
fixes.
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Merge tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"This update has successfully completed a 0day-kbuild run and has
appeared in a linux-next release. The changes outside of the typical
drivers/nvdimm/ and drivers/acpi/nfit.[ch] paths are related to the
removal of IORESOURCE_CACHEABLE, the introduction of memremap(), and
the introduction of ZONE_DEVICE + devm_memremap_pages().
Summary:
- Introduce ZONE_DEVICE and devm_memremap_pages() as a generic
mechanism for adding device-driver-discovered memory regions to the
kernel's direct map.
This facility is used by the pmem driver to enable pfn_to_page()
operations on the page frames returned by DAX ('direct_access' in
'struct block_device_operations').
For now, the 'memmap' allocation for these "device" pages comes
from "System RAM". Support for allocating the memmap from device
memory will arrive in a later kernel.
- Introduce memremap() to replace usages of ioremap_cache() and
ioremap_wt(). memremap() drops the __iomem annotation for these
mappings to memory that do not have i/o side effects. The
replacement of ioremap_cache() with memremap() is limited to the
pmem driver to ease merging the api change in v4.3.
Completion of the conversion is targeted for v4.4.
- Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem
driver, update the VFS DAX implementation and PMEM api to provide
persistence guarantees for kernel operations on a DAX mapping.
- Convert the ACPI NFIT 'BLK' driver to map the block apertures as
cacheable to improve performance.
- Miscellaneous updates and fixes to libnvdimm including support for
issuing "address range scrub" commands, clarifying the optimal
'sector size' of pmem devices, a clarification of the usage of the
ACPI '_STA' (status) property for DIMM devices, and other minor
fixes"
* tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (34 commits)
libnvdimm, pmem: direct map legacy pmem by default
libnvdimm, pmem: 'struct page' for pmem
libnvdimm, pfn: 'struct page' provider infrastructure
x86, pmem: clarify that ARCH_HAS_PMEM_API implies PMEM mapped WB
add devm_memremap_pages
mm: ZONE_DEVICE for "device memory"
mm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h
dax: drop size parameter to ->direct_access()
nd_blk: change aperture mapping from WC to WB
nvdimm: change to use generic kvfree()
pmem, dax: have direct_access use __pmem annotation
dax: update I/O path to do proper PMEM flushing
pmem: add copy_from_iter_pmem() and clear_pmem()
pmem, x86: clean up conditional pmem includes
pmem: remove layer when calling arch_has_wmb_pmem()
pmem, x86: move x86 PMEM API to new pmem.h header
libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option
pmem: switch to devm_ allocations
devres: add devm_memremap
libnvdimm, btt: write and validate parent_uuid
...
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| .gitignore | ||
| apc.c | ||
| asm-offsets.c | ||
| audit.c | ||
| auxio_32.c | ||
| auxio_64.c | ||
| btext.c | ||
| central.c | ||
| cherrs.S | ||
| chmc.c | ||
| compat_audit.c | ||
| cpu.c | ||
| cpumap.c | ||
| cpumap.h | ||
| devices.c | ||
| dma.c | ||
| ds.c | ||
| dtlb_miss.S | ||
| dtlb_prot.S | ||
| ebus.c | ||
| entry.h | ||
| entry.S | ||
| etrap_32.S | ||
| etrap_64.S | ||
| fpu_traps.S | ||
| ftrace.c | ||
| getsetcc.S | ||
| head_32.S | ||
| head_64.S | ||
| helpers.S | ||
| hvapi.c | ||
| hvcalls.S | ||
| hvtramp.S | ||
| idprom.c | ||
| iommu_common.h | ||
| iommu.c | ||
| ioport.c | ||
| irq_32.c | ||
| irq_64.c | ||
| irq.h | ||
| itlb_miss.S | ||
| ivec.S | ||
| jump_label.c | ||
| kernel.h | ||
| kgdb_32.c | ||
| kgdb_64.c | ||
| kprobes.c | ||
| kstack.h | ||
| ktlb.S | ||
| ldc.c | ||
| led.c | ||
| leon_kernel.c | ||
| leon_pci_grpci1.c | ||
| leon_pci_grpci2.c | ||
| leon_pci.c | ||
| leon_pmc.c | ||
| leon_smp.c | ||
| Makefile | ||
| mdesc.c | ||
| misctrap.S | ||
| module.c | ||
| nmi.c | ||
| of_device_32.c | ||
| of_device_64.c | ||
| of_device_common.c | ||
| of_device_common.h | ||
| pci_common.c | ||
| pci_fire.c | ||
| pci_impl.h | ||
| pci_msi.c | ||
| pci_psycho.c | ||
| pci_sabre.c | ||
| pci_schizo.c | ||
| pci_sun4v_asm.S | ||
| pci_sun4v.c | ||
| pci_sun4v.h | ||
| pci.c | ||
| pcic.c | ||
| pcr.c | ||
| perf_event.c | ||
| pmc.c | ||
| power.c | ||
| process_32.c | ||
| process_64.c | ||
| prom_32.c | ||
| prom_64.c | ||
| prom_common.c | ||
| prom_irqtrans.c | ||
| prom.h | ||
| psycho_common.c | ||
| psycho_common.h | ||
| ptrace_32.c | ||
| ptrace_64.c | ||
| reboot.c | ||
| rtrap_32.S | ||
| rtrap_64.S | ||
| sbus.c | ||
| setup_32.c | ||
| setup_64.c | ||
| signal32.c | ||
| signal_32.c | ||
| signal_64.c | ||
| sigutil_32.c | ||
| sigutil_64.c | ||
| sigutil.h | ||
| smp_32.c | ||
| smp_64.c | ||
| sparc_ksyms_32.c | ||
| sparc_ksyms_64.c | ||
| spiterrs.S | ||
| sstate.c | ||
| stacktrace.c | ||
| starfire.c | ||
| sun4d_irq.c | ||
| sun4d_smp.c | ||
| sun4m_irq.c | ||
| sun4m_smp.c | ||
| sun4v_ivec.S | ||
| sun4v_tlb_miss.S | ||
| sys32.S | ||
| sys_sparc32.c | ||
| sys_sparc_32.c | ||
| sys_sparc_64.c | ||
| syscalls.S | ||
| sysfs.c | ||
| systbls_32.S | ||
| systbls_64.S | ||
| systbls.h | ||
| time_32.c | ||
| time_64.c | ||
| trampoline_32.S | ||
| trampoline_64.S | ||
| traps_32.c | ||
| traps_64.c | ||
| tsb.S | ||
| ttable_32.S | ||
| ttable_64.S | ||
| una_asm_32.S | ||
| una_asm_64.S | ||
| unaligned_32.c | ||
| unaligned_64.c | ||
| utrap.S | ||
| vio.c | ||
| viohs.c | ||
| visemul.c | ||
| vmlinux.lds.S | ||
| windows.c | ||
| winfixup.S | ||
| wof.S | ||
| wuf.S | ||