Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-20 Thread yulei zhang
On Tue, Oct 20, 2020 at 3:03 AM Joao Martins wrote: > > On 10/19/20 2:37 PM, Paolo Bonzini wrote: > > On 15/10/20 00:25, Dan Williams wrote: > >> Now, with recent device-dax extensions, it > >> also has a coarse grained memory management system for physical > >> address-space partitioning and a p

Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-19 Thread Joao Martins
On 10/19/20 2:37 PM, Paolo Bonzini wrote: > On 15/10/20 00:25, Dan Williams wrote: >> Now, with recent device-dax extensions, it >> also has a coarse grained memory management system for physical >> address-space partitioning and a path for struct-page-less backing for >> VMs. What feature gaps re

Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-19 Thread Paolo Bonzini
On 15/10/20 00:25, Dan Williams wrote: > Now, with recent device-dax extensions, it > also has a coarse grained memory management system for physical > address-space partitioning and a path for struct-page-less backing for > VMs. What feature gaps remain vs dmemfs, and can those gaps be closed > w

Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-14 Thread Dan Williams
On Mon, Oct 12, 2020 at 4:00 AM Joao Martins wrote: [..] > On 10/10/20 9:15 AM, yulei zhang wrote: > > On Fri, Oct 9, 2020 at 7:53 PM Joao Martins > > wrote: > >> On 10/9/20 12:39 PM, yulei zhang wrote: > >>> Joao, thanks a lot for the feedback. One more thing needs to mention > >>> is that dmem

Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-12 Thread yulei zhang
On Mon, Oct 12, 2020 at 7:57 PM Zengtao (B) wrote: > > > > -Original Message- > > From: yulei.ker...@gmail.com [mailto:yulei.ker...@gmail.com] > > Sent: Thursday, October 08, 2020 3:54 PM > > To: a...@linux-foundation.org; naoya.horigu...@nec.com; > > v...@zeniv.linux.org.uk; pbonz...@redh

RE: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-12 Thread Zengtao (B)
> -Original Message- > From: yulei.ker...@gmail.com [mailto:yulei.ker...@gmail.com] > Sent: Thursday, October 08, 2020 3:54 PM > To: a...@linux-foundation.org; naoya.horigu...@nec.com; > v...@zeniv.linux.org.uk; pbonz...@redhat.com > Cc: linux-fsde...@vger.kernel.org; k...@vger.kernel.org

Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-12 Thread Joao Martins
On 10/10/20 9:15 AM, yulei zhang wrote: > On Fri, Oct 9, 2020 at 7:53 PM Joao Martins wrote: >> On 10/9/20 12:39 PM, yulei zhang wrote: >>> Joao, thanks a lot for the feedback. One more thing needs to mention >>> is that dmemfs also support fine-grained >>> memory management which makes it more fl

Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-10 Thread yulei zhang
On Fri, Oct 9, 2020 at 7:53 PM Joao Martins wrote: > > On 10/9/20 12:39 PM, yulei zhang wrote: > > Joao, thanks a lot for the feedback. One more thing needs to mention > > is that dmemfs also support fine-grained > > memory management which makes it more flexible for tenants with > > different req

Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-09 Thread Joao Martins
On 10/9/20 12:39 PM, yulei zhang wrote: > Joao, thanks a lot for the feedback. One more thing needs to mention > is that dmemfs also support fine-grained > memory management which makes it more flexible for tenants with > different requirements. > So as DAX when it allows to partition a region (st

Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-09 Thread yulei zhang
Joao, thanks a lot for the feedback. One more thing needs to mention is that dmemfs also support fine-grained memory management which makes it more flexible for tenants with different requirements. On Fri, Oct 9, 2020 at 3:01 AM Joao Martins wrote: > > [adding a couple folks that directly or indi

Re: [PATCH 00/35] Enhance memory utilization with DMEMFS

2020-10-08 Thread Joao Martins
[adding a couple folks that directly or indirectly work on the subject] On 10/8/20 8:53 AM, yulei.ker...@gmail.com wrote: > From: Yulei Zhang > > In current system each physical memory page is assocaited with > a page structure which is used to track the usage of this page. > But due to the memo