Re: [PATCH v13] mm: report per-page metadata information

2024-08-06 Thread Pasha Tatashin
On Tue, Aug 6, 2024 at 5:37 PM Pasha Tatashin wrote: > > On Tue, Aug 6, 2024 at 4:53 PM Ira Weiny wrote: > > > > On Tue, Aug 06, 2024 at 01:59:54PM -0400, Pasha Tatashin wrote: > > > On Mon, Aug 5, 2024 at 7:06 PM Dan Williams > > > wrote: > > > > > > > > Pasha Tatashin wrote: > > > > [..] > >

Re: [PATCH v13] mm: report per-page metadata information

2024-08-06 Thread Pasha Tatashin
On Tue, Aug 6, 2024 at 4:53 PM Ira Weiny wrote: > > On Tue, Aug 06, 2024 at 01:59:54PM -0400, Pasha Tatashin wrote: > > On Mon, Aug 5, 2024 at 7:06 PM Dan Williams > > wrote: > > > > > > Pasha Tatashin wrote: > > > [..] > > > > Thank you for the heads up. Can you please attach a full config file

Re: [PATCH v13] mm: report per-page metadata information

2024-08-06 Thread Pasha Tatashin
On Mon, Aug 5, 2024 at 7:06 PM Dan Williams wrote: > > Pasha Tatashin wrote: > [..] > > Thank you for the heads up. Can you please attach a full config file, > > also was anyone able to reproduce this problem in qemu with emulated > > nvdimm? > > Yes, I can reproduce the crash just by trying to re

Re: [PATCH v13] mm: report per-page metadata information

2024-08-05 Thread Alison Schofield
On Mon, Aug 05, 2024 at 02:40:48PM -0400, Pasha Tatashin wrote: > On Fri, Aug 2, 2024 at 3:02 PM Alison Schofield > wrote: > > > > ++ nvdimm, linux-cxl, Yu Zhang > > > > On Wed, Jun 05, 2024 at 10:27:51PM +, Sourav Panda wrote: > > > Today, we do not have any observability of per-page metadata

Re: [PATCH v13] mm: report per-page metadata information

2024-08-05 Thread Dan Williams
Pasha Tatashin wrote: [..] > Thank you for the heads up. Can you please attach a full config file, > also was anyone able to reproduce this problem in qemu with emulated > nvdimm? Yes, I can reproduce the crash just by trying to reconfigure the mode of a pmem namespace: # ndctl create-namespace -

Re: [PATCH v13] mm: report per-page metadata information

2024-08-05 Thread Pasha Tatashin
On Fri, Aug 2, 2024 at 3:02 PM Alison Schofield wrote: > > ++ nvdimm, linux-cxl, Yu Zhang > > On Wed, Jun 05, 2024 at 10:27:51PM +, Sourav Panda wrote: > > Today, we do not have any observability of per-page metadata > > and how much it takes away from the machine capacity. Thus, > > we want t

Re: [PATCH v13] mm: report per-page metadata information

2024-08-02 Thread Alison Schofield
++ nvdimm, linux-cxl, Yu Zhang On Wed, Jun 05, 2024 at 10:27:51PM +, Sourav Panda wrote: > Today, we do not have any observability of per-page metadata > and how much it takes away from the machine capacity. Thus, > we want to describe the amount of memory that is going towards > per-page meta