mirror of
https://github.com/torvalds/linux
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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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| .. | ||
| hardware | ||
| mach | ||
| xen | ||
| arch_timer.h | ||
| arm-cci.h | ||
| asm-offsets.h | ||
| assembler.h | ||
| atomic.h | ||
| auxvec.h | ||
| barrier.h | ||
| bitops.h | ||
| bitrev.h | ||
| bL_switcher.h | ||
| bug.h | ||
| bugs.h | ||
| cache.h | ||
| cacheflush.h | ||
| cachetype.h | ||
| checksum.h | ||
| clkdev.h | ||
| cmpxchg.h | ||
| compiler.h | ||
| cp15.h | ||
| cpu.h | ||
| cpuidle.h | ||
| cputype.h | ||
| cti.h | ||
| dcc.h | ||
| delay.h | ||
| device.h | ||
| div64.h | ||
| dma-contiguous.h | ||
| dma-iommu.h | ||
| dma-mapping.h | ||
| dma.h | ||
| domain.h | ||
| ecard.h | ||
| edac.h | ||
| elf.h | ||
| entry-macro-multi.S | ||
| exception.h | ||
| fb.h | ||
| fiq.h | ||
| firmware.h | ||
| fixmap.h | ||
| flat.h | ||
| floppy.h | ||
| fncpy.h | ||
| fpstate.h | ||
| ftrace.h | ||
| futex.h | ||
| glue-cache.h | ||
| glue-df.h | ||
| glue-pf.h | ||
| glue-proc.h | ||
| glue.h | ||
| gpio.h | ||
| hardirq.h | ||
| highmem.h | ||
| hugetlb-3level.h | ||
| hugetlb.h | ||
| hw_breakpoint.h | ||
| hw_irq.h | ||
| hwcap.h | ||
| hypervisor.h | ||
| ide.h | ||
| idmap.h | ||
| insn.h | ||
| io.h | ||
| irq.h | ||
| irq_work.h | ||
| irqflags.h | ||
| jump_label.h | ||
| Kbuild | ||
| kexec.h | ||
| kgdb.h | ||
| kmap_types.h | ||
| kprobes.h | ||
| kvm_arm.h | ||
| kvm_asm.h | ||
| kvm_coproc.h | ||
| kvm_emulate.h | ||
| kvm_host.h | ||
| kvm_mmio.h | ||
| kvm_mmu.h | ||
| kvm_psci.h | ||
| limits.h | ||
| linkage.h | ||
| mach-types.h | ||
| mc146818rtc.h | ||
| mcpm.h | ||
| mcs_spinlock.h | ||
| memblock.h | ||
| memory.h | ||
| mmu.h | ||
| mmu_context.h | ||
| module.h | ||
| mpu.h | ||
| mtd-xip.h | ||
| mutex.h | ||
| neon.h | ||
| nwflash.h | ||
| opcodes-sec.h | ||
| opcodes-virt.h | ||
| opcodes.h | ||
| outercache.h | ||
| page-nommu.h | ||
| page.h | ||
| patch.h | ||
| pci.h | ||
| percpu.h | ||
| perf_event.h | ||
| pgalloc.h | ||
| pgtable-2level-hwdef.h | ||
| pgtable-2level-types.h | ||
| pgtable-2level.h | ||
| pgtable-3level-hwdef.h | ||
| pgtable-3level-types.h | ||
| pgtable-3level.h | ||
| pgtable-hwdef.h | ||
| pgtable-nommu.h | ||
| pgtable.h | ||
| probes.h | ||
| proc-fns.h | ||
| processor.h | ||
| procinfo.h | ||
| prom.h | ||
| psci.h | ||
| ptrace.h | ||
| setup.h | ||
| shmparam.h | ||
| signal.h | ||
| smp.h | ||
| smp_plat.h | ||
| smp_scu.h | ||
| smp_twd.h | ||
| sparsemem.h | ||
| spinlock.h | ||
| spinlock_types.h | ||
| stackprotector.h | ||
| stacktrace.h | ||
| string.h | ||
| suspend.h | ||
| swab.h | ||
| switch_to.h | ||
| sync_bitops.h | ||
| syscall.h | ||
| system_info.h | ||
| system_misc.h | ||
| tcm.h | ||
| therm.h | ||
| thread_info.h | ||
| thread_notify.h | ||
| timex.h | ||
| tlb.h | ||
| tlbflush.h | ||
| tls.h | ||
| topology.h | ||
| traps.h | ||
| trusted_foundations.h | ||
| types.h | ||
| uaccess.h | ||
| ucontext.h | ||
| unified.h | ||
| unistd.h | ||
| unwind.h | ||
| uprobes.h | ||
| user.h | ||
| v7m.h | ||
| vdso.h | ||
| vdso_datapage.h | ||
| vfp.h | ||
| vfpmacros.h | ||
| vga.h | ||
| virt.h | ||
| word-at-a-time.h | ||
| xor.h | ||