Re: [PATCHv3 07/13] node: Add heterogenous memory access attributes

2019-01-11 Thread Dan Williams
On Fri, Jan 11, 2019 at 7:59 AM Keith Busch wrote: > > On Fri, Jan 11, 2019 at 11:32:38AM +, Jonathan Cameron wrote: > > On Thu, 10 Jan 2019 10:30:17 -0700 > > Keith Busch wrote: > > > I am not aware of a real platform that has an initiator-target pair with > > > better latency but worse

Re: [PATCHv3 07/13] node: Add heterogenous memory access attributes

2019-01-11 Thread Keith Busch
On Fri, Jan 11, 2019 at 11:32:38AM +, Jonathan Cameron wrote: > On Thu, 10 Jan 2019 10:30:17 -0700 > Keith Busch wrote: > > I am not aware of a real platform that has an initiator-target pair with > > better latency but worse bandwidth than any different initiator paired to > > the same

Re: [PATCHv3 07/13] node: Add heterogenous memory access attributes

2019-01-10 Thread Keith Busch
On Thu, Jan 10, 2019 at 06:07:02PM +0530, Aneesh Kumar K.V wrote: > Keith Busch writes: > > > Heterogeneous memory systems provide memory nodes with different latency > > and bandwidth performance attributes. Provide a new kernel interface for > > subsystems to register the attributes under the

Re: [PATCHv3 07/13] node: Add heterogenous memory access attributes

2019-01-10 Thread Aneesh Kumar K.V
Keith Busch writes: > Heterogeneous memory systems provide memory nodes with different latency > and bandwidth performance attributes. Provide a new kernel interface for > subsystems to register the attributes under the memory target node's > initiator access class. If the system provides this

[PATCHv3 07/13] node: Add heterogenous memory access attributes

2019-01-09 Thread Keith Busch
Heterogeneous memory systems provide memory nodes with different latency and bandwidth performance attributes. Provide a new kernel interface for subsystems to register the attributes under the memory target node's initiator access class. If the system provides this information, applications may