From: Arnd Bergmann <arnd@arndb.de>
To: Andrei Warkentin <andreiw@motorola.com>
Cc: linux-mmc@vger.kernel.org
Subject: Re: [PATCHv4] MMC: MMC boot partitions support.
Date: Wed, 30 Mar 2011 14:03:20 +0200 [thread overview]
Message-ID: <201103301403.20779.arnd@arndb.de> (raw)
In-Reply-To: <AANLkTinMu57VyaVK3zBpePdJ-Yi=g9zt2833UtbcRpM5@mail.gmail.com>
On Wednesday 30 March 2011, Andrei Warkentin wrote:
> On Tue, Mar 22, 2011 at 4:11 PM, Andrei Warkentin <andreiw@motorola.com> wrote:
> > Allows device MMC boot partitions to be accessed. MMC partitions
> > are treated effectively as separate block devices on the same
> > MMC card.
> >
>
> Anyone has any opinions on these changes as being good or bad?
> Anything I should do differently? Or does everyone like this?
I have no objections to the code, but I don't completely understand
what it does. Maybe you can elaborate more in the patch description.
A few questions from me that I suppose should be answered by the
description:
* Is each of the MMC partitions in turn a partitionable device
like the user partition with its mmcblk0p1/p2/p3... devices?
* Will this patch impact device naming? Suppose you have an
existing machine with mmcblk0 and mmcblk1 on two physical
eMMC devices. When you show the partitions as new block
devices, could it happen that the names are now different
as you get additional devices inbetween? That would need to
be documented carefully, as it could break existing setups.
* What devices specifically have these new partitions? Only eMMC 4.4
or also other versions?
* Would the same method work to support the secure partition on
SD cards?
* How does a user identify which hardware partition corresponds to
a given block device and vice versa?
Arnd
next prev parent reply other threads:[~2011-03-30 12:03 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-19 11:18 MMC/eMMC partitioning support Andrei Warkentin
2011-03-19 11:18 ` [RFC] MMC: MMC boot partitions support Andrei Warkentin
2011-03-19 12:13 ` Andrei Warkentin
2011-03-21 14:19 ` [PATCH] " Andrei Warkentin
2011-03-22 3:54 ` [PATCHv3] " Andrei Warkentin
2011-03-22 21:11 ` MMC partitions support (4th revision) Andrei Warkentin
2011-03-22 21:11 ` [PATCHv4] MMC: MMC boot partitions support Andrei Warkentin
2011-03-29 22:45 ` Andrei Warkentin
2011-03-30 12:03 ` Arnd Bergmann [this message]
2011-03-30 20:07 ` Andrei Warkentin
2011-03-30 22:43 ` Chris Ball
2011-03-30 22:46 ` Chris Ball
2011-03-30 23:18 ` Andrei Warkentin
2011-03-30 23:34 ` Chris Ball
2011-03-31 6:57 ` Andrei Warkentin
2011-03-31 11:01 ` Arnd Bergmann
2011-03-31 19:17 ` Andrei Warkentin
2011-03-31 19:37 ` Chris Ball
2011-03-31 20:01 ` Andrei Warkentin
2011-03-31 20:03 ` Chris Ball
2011-03-31 20:01 ` Andrei Warkentin
2011-04-01 9:23 ` Arnd Bergmann
2011-04-01 14:52 ` Chris Ball
2011-04-01 9:21 ` Arnd Bergmann
2011-03-31 11:17 ` Arnd Bergmann
2011-03-31 19:29 ` Andrei Warkentin
2011-04-01 10:38 ` Arnd Bergmann
2011-04-01 18:42 ` Andrei Warkentin
2011-04-01 19:25 ` Arnd Bergmann
2011-04-01 19:42 ` Andrei Warkentin
2011-04-04 12:22 ` [PATCH] " Andrei Warkentin
2011-04-04 11:52 ` Andrei Warkentin
2011-04-11 21:13 ` [patchv3 1/4] MMC: Rename erase_timeout to cmd_timeout_ms Andrei Warkentin
2011-04-11 21:13 ` [patchv3 2/4] MMC: SDHCI R1B command handling + MMC_CAP_ERASE Andrei Warkentin
2011-04-12 9:06 ` Dong, Chuanxiao
2011-04-12 18:05 ` Andrei Warkentin
2011-04-13 1:59 ` Dong, Chuanxiao
2011-04-13 5:44 ` Andrei Warkentin
2011-04-15 21:34 ` Cyril Hrubis
2011-08-10 13:30 ` Chris Ball
2011-04-11 21:13 ` [patchv3 3/4] MMC: Allow setting CMD timeout for CMD6 (SWITCH) Andrei Warkentin
2011-04-11 21:13 ` [patchv3 4/4] MMC: MMC boot partitions support Andrei Warkentin
2011-04-11 22:00 ` Chris Ball
2011-04-11 22:10 ` Andrei Warkentin
2011-04-11 22:22 ` Chris Ball
2011-04-11 22:18 ` Andrei Warkentin
2011-04-11 23:10 ` [patchv4 1/2] MMC: block.c cleanup for host claim/release Andrei Warkentin
2011-04-11 23:10 ` [patchv4 2/2] MMC: MMC boot partitions support Andrei Warkentin
2011-04-11 23:20 ` [patchv3 4/4] " Chris Ball
2011-04-11 23:24 ` Andrei Warkentin
2011-04-21 1:13 ` Chris Ball
2011-04-21 1:30 ` Chris Ball
2011-04-21 5:09 ` Philip Rakity
2011-04-21 5:22 ` Chris Ball
2011-04-21 5:31 ` Andrei Warkentin
2011-04-21 6:07 ` [RFC] MMC: Block: Ensure hardware partitions don't mess with mmcblk device naming Andrei Warkentin
2011-04-21 8:17 ` Andrei Warkentin
2011-04-21 14:44 ` Chris Ball
2011-04-22 0:20 ` Chris Ball
2011-04-22 3:46 ` [PATCH] " Andrei Warkentin
2011-04-22 3:50 ` Andrei Warkentin
2011-04-22 22:34 ` Chris Ball
2011-04-21 4:31 ` [patchv3 4/4] MMC: MMC boot partitions support Jaehoon Chung
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=201103301403.20779.arnd@arndb.de \
--to=arnd@arndb.de \
--cc=andreiw@motorola.com \
--cc=linux-mmc@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).