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From: Greg KH <gregkh@linuxfoundation.org>
To: Dan Williams <dan.j.williams@intel.com>
Cc: stable@vger.kernel.org,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Paul Mackerras <paulus@samba.org>, Christoph Hellwig <hch@lst.de>,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
	linux-nvdimm@lists.01.org
Subject: Re: [5.4-stable PATCH 0/7] libnvdimm: Cross-arch compatible namespace alignment
Date: Fri, 22 May 2020 14:00:09 +0200
Message-ID: <20200522120009.GA1456052@kroah.com> (raw)
In-Reply-To: <20200522115800.GA1451824@kroah.com>

On Fri, May 22, 2020 at 01:58:00PM +0200, Greg KH wrote:
> On Thu, May 21, 2020 at 04:37:43PM -0700, Dan Williams wrote:
> > Hello stable team,
> > 
> > These patches have been shipping in mainline since v5.7-rc1 with no
> > reported issues. They address long standing problems in libnvdimm's
> > handling of namespace provisioning relative to alignment constraints
> > including crashes trying to even load the driver on some PowerPC
> > configurations.
> > 
> > I did fold one build fix [1] into "libnvdimm/region: Introduce an 'align'
> > attribute" so as to not convey the bisection breakage to -stable.
> > 
> > Please consider them for v5.4-stable. They do pass the latest
> > version of the ndctl unit tests.
> 
> What about 5.6.y?  Any user upgrading from 5.4-stable to 5.6-stable
> would hit a regression, right?
> 
> So can we get a series backported to 5.6.y as well?  I need that before
> I can take this series.

Also, I really don't see the "bug" that this is fixing here.  If this
didn't work on PowerPC before, it can continue to just "not work" until
5.7, right?  What problems with 5.4.y and 5.6.y is this series fixing
that used to work before?

thanks,

greg k-h
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Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-21 23:37 Dan Williams
2020-05-21 23:37 ` [5.4-stable PATCH 1/7] mm/memremap_pages: Kill unused __devm_memremap_pages() Dan Williams
2020-05-21 23:37 ` [5.4-stable PATCH 2/7] mm/memremap_pages: Introduce memremap_compat_align() Dan Williams
2020-05-21 23:37 ` [5.4-stable PATCH 3/7] libnvdimm/pfn: Prevent raw mode fallback if pfn-infoblock valid Dan Williams
2020-05-21 23:38 ` [5.4-stable PATCH 4/7] libnvdimm/pfn_dev: Don't clear device memmap area during generic namespace probe Dan Williams
2020-05-21 23:38 ` [5.4-stable PATCH 5/7] libnvdimm/namespace: Enforce memremap_compat_align() Dan Williams
2020-05-21 23:38 ` [5.4-stable PATCH 6/7] libnvdimm/region: Introduce NDD_LABELING Dan Williams
2020-05-21 23:38 ` [5.4-stable PATCH 7/7] libnvdimm/region: Introduce an 'align' attribute Dan Williams
2020-05-22 11:58 ` [5.4-stable PATCH 0/7] libnvdimm: Cross-arch compatible namespace alignment Greg KH
2020-05-22 12:00   ` Greg KH [this message]
2020-05-26 20:42     ` Dan Williams
2020-05-26 20:49       ` Jeff Moyer
2020-05-26 20:52         ` Dan Williams

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