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75b7c05ebf
Add support for ND_REGION_ASYNC capability if the device tree indicates 'ibm,hcall-flush-required' property in the NVDIMM node. Flush is done by issuing H_SCM_FLUSH hcall to the hypervisor. If the flush request failed, the hypervisor is expected to to reflect the problem in the subsequent nvdimm H_SCM_HEALTH call. This patch prevents mmap of namespaces with MAP_SYNC flag if the nvdimm requires an explicit flush[1]. References: [1] https://github.com/avocado-framework-tests/avocado-misc-tests/blob/master/memory/ndctl.py.data/map_sync.c Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> [mpe: Use unsigned long / long instead of uint64_t/int64_t] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/161703936121.36.7260632399582101498.stgit@e1fbed493c87 |
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| .. | ||
| booting.rst | ||
| bootwrapper.rst | ||
| cpu_families.rst | ||
| cpu_features.rst | ||
| cxl.rst | ||
| cxlflash.rst | ||
| dawr-power9.rst | ||
| dscr.rst | ||
| eeh-pci-error-recovery.rst | ||
| elfnote.rst | ||
| features.rst | ||
| firmware-assisted-dump.rst | ||
| hvcs.rst | ||
| imc.rst | ||
| index.rst | ||
| isa-versions.rst | ||
| kaslr-booke32.rst | ||
| mpc52xx.rst | ||
| papr_hcalls.rst | ||
| pci_iov_resource_on_powernv.rst | ||
| pmu-ebb.rst | ||
| ptrace.rst | ||
| qe_firmware.rst | ||
| syscall64-abi.rst | ||
| transactional_memory.rst | ||
| ultravisor.rst | ||
| vas-api.rst | ||
| vcpudispatch_stats.rst | ||