From: Pavel Machek <pavel@suse.cz>
To: Greg KH <gregkh@suse.de>
Cc: linux-kernel@vger.kernel.org, stable@kernel.org,
Justin Forbes <jmforbes@linuxtx.org>,
Zwane Mwaikambo <zwane@arm.linux.org.uk>,
"Theodore Ts'o" <tytso@mit.edu>,
Randy Dunlap <rdunlap@xenotime.net>,
Dave Jones <davej@redhat.com>,
Chuck Wolber <chuckw@quantumlinux.com>,
Chris Wedgwood <reviews@ml.cw.f00f.org>,
Michael Krufky <mkrufky@linuxtv.org>,
Chuck Ebbert <cebbert@redhat.com>,
Domenico Andreoli <cavokz@gmail.com>, Willy Tarreau <w@1wt.eu>,
Rodrigo Rubira Branco <rbranco@la.checkpoint.com>,
Jake Edge <jake@lwn.net>, Eugene Teo <eteo@redhat.com>,
torvalds@linux-foundation.org, akpm@linux-foundation.org,
alan@lxorguk.ukuu.org.uk, Joerg Roedel <joerg.roedel@amd.com>
Subject: Re: [patch 01/22] AMD IOMMU: enable device isolation per default
Date: Thu, 18 Dec 2008 14:00:15 +0100 [thread overview]
Message-ID: <20081218130015.GA1420@ucw.cz> (raw)
In-Reply-To: <20081217000353.GB4504@kroah.com>
On Tue 2008-12-16 16:03:53, Greg KH wrote:
> 2.6.27-stable review patch. If anyone has any objections, please let us know.
>
> ------------------
>
> From: Joerg Roedel <joerg.roedel@amd.com>
>
> commit 3ce1f93c6d53c3f91c3846cf66b018276c8ac2e7 upstream.
>
> Impact: makes device isolation the default for AMD IOMMU
>
> Some device drivers showed double-free bugs of DMA memory while testing
> them with AMD IOMMU. If all devices share the same protection domain
> this can lead to data corruption and data loss. Prevent this by putting
> each device into its own protection domain per default.
>
> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This does not look like 'fix for a serious bug' to
me. stable_kernel_rules.txt says '...not a "this could be a problem"
type thing'.
Yes, maybe iommu is mature enough that we want it enabled, but...
(Or maybe Documentation/stable_kernel_rules.txt needs updating. The
patch for penguin dirty feet already got in.....)
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2008-12-19 7:21 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20081216235704.347182084@mini.kroah.org>
2008-12-17 0:03 ` [patch 00/22] 2.6.27.10 stable review Greg KH
2008-12-17 0:03 ` [patch 01/22] AMD IOMMU: enable device isolation per default Greg KH
2008-12-18 13:00 ` Pavel Machek [this message]
2008-12-19 11:21 ` Joerg Roedel
2008-12-20 11:26 ` Pavel Machek
2008-12-20 21:48 ` Joerg Roedel
2008-12-19 16:14 ` Greg KH
2008-12-17 0:04 ` [patch 02/22] bonding: fix miimon failure counter Greg KH
2008-12-17 0:04 ` [patch 03/22] Revert "sched_clock: prevent scd->clock from moving backwards" Greg KH
2008-12-17 0:04 ` [patch 04/22] x86 Fix VMI crash on boot in 2.6.28-rc8 Greg KH
2008-12-17 0:04 ` [patch 05/22] lib/idr.c: Fix bug introduced by RCU fix Greg KH
2008-12-17 0:04 ` [patch 06/22] libata: fix Seagate NCQ+FLUSH blacklist Greg KH
2008-12-17 0:04 ` [patch 07/22] e1000e: fix double release of mutex Greg KH
2008-12-17 0:04 ` [patch 08/22] can: Fix CAN_(EFF|RTR)_FLAG handling in can_filter Greg KH
2008-12-17 0:04 ` [patch 09/22] can: omit received RTR frames for single ID filter lists Greg KH
2008-12-17 0:04 ` [patch 10/22] iwlwifi: clean key table in iwl_clear_stations_table function Greg KH
2008-12-17 0:04 ` [patch 11/22] net: eliminate warning from NETIF_F_UFO on bridge Greg KH
2008-12-17 0:04 ` [patch 12/22] unicode table for cp437 Greg KH
2008-12-17 0:04 ` [patch 13/22] console ASCII glyph 1:1 mapping Greg KH
2008-12-17 0:04 ` [patch 14/22] iwlagn: fix RX skb alignment Greg KH
2008-12-17 0:04 ` [patch 15/22] key: fix setkey(8) policy set breakage Greg KH
2008-12-17 0:04 ` [patch 16/22] firewire: fw-ohci: fix IOMMU resource exhaustion Greg KH
2008-12-17 0:04 ` [patch 17/22] ieee1394: add quirk fix for Freecom HDD Greg KH
2008-12-17 0:04 ` [patch 18/22] SUNRPC: Fix a performance regression in the RPC authentication code Greg KH
2008-12-17 0:04 ` [patch 19/22] b1isa: fix b1isa_exit() to really remove registered capi controllers Greg KH
2008-12-17 0:04 ` [patch 20/22] macfb: Do not overflow fb_fix_screeninfo.id Greg KH
2008-12-17 0:04 ` [patch 21/22] V4L/DVB (9621): Avoid writing outside shadow.bytes[] array Greg KH
2008-12-17 0:04 ` [patch 22/22] setup_per_zone_pages_min(): take zone->lock instead of zone->lru_lock Greg KH
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