Re: [PATCH v3] powerpc/papr_scm: Implement support for H_SCM_FLUSH hcall
Michael Ellerman <[email protected]>
| Newsgroups | org.01.lists.linux-nvdimm,dev.linux.lists.nvdimm,org.kernel.vger.kvm-ppc,org.kernel.vger.linux-doc,org.ozlabs.lists.linuxppc-dev |
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| Message-ID | <[email protected]> |
"Aneesh Kumar K.V" <[email protected]> writes: > Shivaprasad G Bhat <[email protected]> writes: > >> 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 > > > Reviewed-by: Aneesh Kumar K.V <[email protected]> Do we need an ack from nvdimm folks on this? Or is it entirely powerpc internal (seems like it from the diffstat)? cheers _______________________________________________ Linux-nvdimm mailing list -- [email protected] To unsubscribe send an email to [email protected]