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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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|---|---|---|
| .. | ||
| ge | ||
| qe_lib | ||
| xics | ||
| 6xx-suspend.S | ||
| axonram.c | ||
| cpm1.c | ||
| cpm2_pic.c | ||
| cpm2_pic.h | ||
| cpm2.c | ||
| cpm_common.c | ||
| dart_iommu.c | ||
| dart.h | ||
| dcr-low.S | ||
| dcr.c | ||
| ehv_pic.c | ||
| fsl_85xx_cache_ctlr.h | ||
| fsl_85xx_cache_sram.c | ||
| fsl_85xx_l2ctlr.c | ||
| fsl_gtm.c | ||
| fsl_lbc.c | ||
| fsl_mpic_err.c | ||
| fsl_mpic_timer_wakeup.c | ||
| fsl_msi.c | ||
| fsl_msi.h | ||
| fsl_pci.c | ||
| fsl_pci.h | ||
| fsl_pmc.c | ||
| fsl_rio.c | ||
| fsl_rio.h | ||
| fsl_rmu.c | ||
| fsl_soc.c | ||
| fsl_soc.h | ||
| grackle.c | ||
| i8259.c | ||
| indirect_pci.c | ||
| ipic.c | ||
| ipic.h | ||
| Kconfig | ||
| Makefile | ||
| micropatch.c | ||
| mmio_nvram.c | ||
| mpc5xxx_clocks.c | ||
| mpc8xx_pic.c | ||
| mpc8xx_pic.h | ||
| mpic_msgr.c | ||
| mpic_msi.c | ||
| mpic_timer.c | ||
| mpic_u3msi.c | ||
| mpic.c | ||
| mpic.h | ||
| msi_bitmap.c | ||
| mv64x60_dev.c | ||
| mv64x60_pci.c | ||
| mv64x60_pic.c | ||
| mv64x60_udbg.c | ||
| mv64x60.h | ||
| of_rtc.c | ||
| pmi.c | ||
| ppc4xx_cpm.c | ||
| ppc4xx_gpio.c | ||
| ppc4xx_hsta_msi.c | ||
| ppc4xx_msi.c | ||
| ppc4xx_ocm.c | ||
| ppc4xx_pci.c | ||
| ppc4xx_pci.h | ||
| ppc4xx_soc.c | ||
| rtc_cmos_setup.c | ||
| scom.c | ||
| simple_gpio.c | ||
| simple_gpio.h | ||
| tsi108_dev.c | ||
| tsi108_pci.c | ||
| udbg_memcons.c | ||
| uic.c | ||
| xilinx_intc.c | ||
| xilinx_pci.c | ||