From: Christoph Hellwig <hch@lst.de>
To: Jan Kara <jack@suse.cz>
Cc: "Michal Hocko" <mhocko@suse.com>,
"kbuild test robot" <lkp@intel.com>,
linux-nvdimm <linux-nvdimm@lists.01.org>,
"Heiko Carstens" <heiko.carstens@de.ibm.com>,
"Linux MM" <linux-mm@kvack.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Gerald Schaefer" <gerald.schaefer@de.ibm.com>,
"Martin Schwidefsky" <schwidefsky@de.ibm.com>,
"Christoph Hellwig" <hch@lst.de>,
"Thomas Meyer" <thomas@m3y3r.de>
Subject: Re: [PATCH v10] mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS
Date: Tue, 22 May 2018 08:28:06 +0200 [thread overview]
Message-ID: <20180522062806.GD7816@lst.de> (raw)
In-Reply-To: <20180521090410.7ygosxzjfhceqrq4@quack2.suse.cz>
On Mon, May 21, 2018 at 11:04:10AM +0200, Jan Kara wrote:
> We definitely do have customers using "execute in place" on s390x from
> dcssblk. I've got about two bug reports for it when customers were updating
> from old kernels using original XIP to kernels using DAX. So we need to
> keep that working.
That is all good an fine, but I think time has come where s390 needs
to migrate to provide the pmem API so that we can get rid of these
special cases. Especially given that the old XIP/legacy DAX has all
kinds of known bugs at this point in time.
_______________________________________________
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Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Jan Kara <jack@suse.cz>
Cc: "Dan Williams" <dan.j.williams@intel.com>,
"Christoph Hellwig" <hch@lst.de>,
linux-nvdimm <linux-nvdimm@lists.01.org>,
"Martin Schwidefsky" <schwidefsky@de.ibm.com>,
"Heiko Carstens" <heiko.carstens@de.ibm.com>,
"Michal Hocko" <mhocko@suse.com>,
"kbuild test robot" <lkp@intel.com>,
"Thomas Meyer" <thomas@m3y3r.de>,
"Dave Jiang" <dave.jiang@intel.com>,
"Jérôme Glisse" <jglisse@redhat.com>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
"Linux MM" <linux-mm@kvack.org>,
"Gerald Schaefer" <gerald.schaefer@de.ibm.com>
Subject: Re: [PATCH v10] mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS
Date: Tue, 22 May 2018 08:28:06 +0200 [thread overview]
Message-ID: <20180522062806.GD7816@lst.de> (raw)
In-Reply-To: <20180521090410.7ygosxzjfhceqrq4@quack2.suse.cz>
On Mon, May 21, 2018 at 11:04:10AM +0200, Jan Kara wrote:
> We definitely do have customers using "execute in place" on s390x from
> dcssblk. I've got about two bug reports for it when customers were updating
> from old kernels using original XIP to kernels using DAX. So we need to
> keep that working.
That is all good an fine, but I think time has come where s390 needs
to migrate to provide the pmem API so that we can get rid of these
special cases. Especially given that the old XIP/legacy DAX has all
kinds of known bugs at this point in time.
next prev parent reply other threads:[~2018-05-22 6:22 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-17 20:06 [PATCH v10] mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS Dan Williams
2018-05-17 20:06 ` Dan Williams
2018-05-17 20:06 ` Dan Williams
2018-05-18 9:00 ` Jan Kara
2018-05-18 9:00 ` Jan Kara
2018-05-18 9:46 ` Christoph Hellwig
2018-05-18 9:46 ` Christoph Hellwig
2018-05-18 16:00 ` Dan Williams
2018-05-18 16:00 ` Dan Williams
2018-05-21 9:04 ` Jan Kara
2018-05-22 6:28 ` Christoph Hellwig [this message]
2018-05-22 6:28 ` Christoph Hellwig
2018-05-23 18:50 ` Gerald Schaefer
2018-05-23 18:50 ` Gerald Schaefer
2018-05-29 20:26 ` Dan Williams
2018-05-29 20:26 ` Dan Williams
2018-06-01 15:01 ` Gerald Schaefer
2018-06-01 15:01 ` Gerald Schaefer
2018-06-02 0:03 ` Dan Williams
2018-06-02 0:03 ` Dan Williams
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