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From: Andrew Morton <akpm@linux-foundation.org>
To: David Hildenbrand <david@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	"Alexander A. Klimov" <grandmaster@al2klimov.de>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Andrew Lunn <andrew@lunn.ch>,
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	Xiaoming Ni <nixiaoming@huawei.com>,
	Yoshinori Sato <ysato@users.osdn.me>
Subject: Re: [PATCH v1 0/3] drivers/char: remove /dev/kmem for good
Date: Wed, 24 Mar 2021 12:24:12 -0700	[thread overview]
Message-ID: <20210324122412.e77247e6d3259d5493951019@linux-foundation.org> (raw)
In-Reply-To: <20210324102351.6932-1-david@redhat.com>


> Let's remove /dev/kmem, which is unused and obsolete.

I grabbed these.  Silently - the cc list is amazing ;)

I was wondering if it would be better to permanently disable /dev/kmem
in Kconfig along with a comment "if you really want this thing then
email peeps@places with a very good reason why".  Let that ride for a
year or three then blam.

But this is so much more attractive, and it certainly sounds like it's
worth any damage it might cause.

We do tend to think about distros.  I bet there are a number of weird
embedded type systems using /dev/kmem - it's amazing what sorts of
hacks those people will put up with the get something out the door. 
But those systems tend to carry a lot of specialized changes anyway, so
they can just add "revert David's patch" to their pile.




  parent reply	other threads:[~2021-03-24 19:24 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-24 10:23 David Hildenbrand
2021-03-24 10:23 ` [PATCH v1 1/3] " David Hildenbrand
2021-03-24 10:23 ` [PATCH v1 2/3] mm: remove xlate_dev_kmem_ptr() David Hildenbrand
2021-03-24 10:23 ` [PATCH v1 3/3] mm/vmalloc: remove vwrite() David Hildenbrand
2021-03-24 19:24 ` Andrew Morton [this message]
2021-03-24 22:58   ` [PATCH v1 0/3] drivers/char: remove /dev/kmem for good Balbir Singh
2021-03-25  6:46     ` Greg Kroah-Hartman
2021-03-25  6:46   ` Greg Kroah-Hartman
2021-03-31 15:18   ` Enrico Weigelt, metux IT consult
2021-03-24 20:14 ` Michal Hocko

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