Re: Phantom PMEM poison issue

2022-01-21 Thread Jane Chu
gt; > Erwin > > -Original Message- > From: Luck, Tony > Sent: Friday, January 21, 2022 5:27 PM > To: chu, jane > Cc: Williams, Dan J ; b...@alien8.de >> Borislav > Petkov ; djw...@kernel.org; wi...@infradead.org; > nvd...@lists.linux.dev; linux-kernel@v

Re: Phantom PMEM poison issue

2022-01-21 Thread Jane Chu
On 1/21/2022 5:27 PM, Luck, Tony wrote: > On Sat, Jan 22, 2022 at 12:40:18AM +, Jane Chu wrote: >> On 1/21/2022 4:31 PM, Jane Chu wrote: >>> On baremetal Intel platform with DCPMEM installed and configured to >>> provision daxfs, say a poison was consumed by a load from a user thread, >>> and t

RE: Phantom PMEM poison issue

2022-01-21 Thread Tsaur, Erwin
21, 2022 5:27 PM To: chu, jane Cc: Williams, Dan J ; b...@alien8.de >> Borislav Petkov ; djw...@kernel.org; wi...@infradead.org; nvd...@lists.linux.dev; linux-kernel@vger.kernel.org Subject: Re: Phantom PMEM poison issue On Sat, Jan 22, 2022 at 12:40:18AM +, Jane Chu wrote: > O

Re: Phantom PMEM poison issue

2022-01-21 Thread Luck, Tony
On Sat, Jan 22, 2022 at 12:40:18AM +, Jane Chu wrote: > On 1/21/2022 4:31 PM, Jane Chu wrote: > > On baremetal Intel platform with DCPMEM installed and configured to > > provision daxfs, say a poison was consumed by a load from a user thread, > > and then daxfs takes action and clears the poiso

Re: Phantom PMEM poison issue

2022-01-21 Thread Jane Chu
On 1/21/2022 4:31 PM, Jane Chu wrote: > On baremetal Intel platform with DCPMEM installed and configured to > provision daxfs, say a poison was consumed by a load from a user thread, > and then daxfs takes action and clears the poison, confirmed by "ndctl > -NM". > > Now, depends on the luck, afte