From: "Maciej W. Rozycki" <macro@orcam.me.uk>
To: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>,
Jens Axboe <axboe@kernel.dk>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Richard Henderson <rth@twiddle.net>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
Matt Turner <mattst88@gmail.com>,
Russell King <linux@armlinux.org.uk>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Michael Ellerman <mpe@ellerman.id.au>,
linux-ide@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org
Subject: Re: remove the legacy ide driver
Date: Fri, 19 Mar 2021 17:48:32 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.21.2103191712550.21463@angie.orcam.me.uk> (raw)
In-Reply-To: <20210318045706.200458-1-hch@lst.de>
On Thu, 18 Mar 2021, Christoph Hellwig wrote:
> we've been trying to get rid of the legacy ide driver for a while now,
> and finally scheduled a removal for 2021, which is three month old now.
Hmm, there's still a regression in that pata_legacy unconditionally pokes
at random I/O port locations corresponding to all the known possible ATA
interface mappings with ISA option cards:
scsi host0: pata_legacy
ata1: PATA max PIO4 cmd 0x1f0 ctl 0x3f6 irq 14
ata1.00: ATA-4: ST310211A, 3.54, max UDMA/100
ata1.00: 19541088 sectors, multi 16: LBA
ata1.00: configured for PIO
scsi 0:0:0:0: Direct-Access ATA ST310211A 3.54 PQ: 0 ANSI: 5
scsi 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] 19541088 512-byte logical blocks: (10.0 GB/9.32 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sda: sda1 sda2 sda3
sd 0:0:0:0: [sda] Attached SCSI disk
scsi host1: pata_legacy
ata2: PATA max PIO4 cmd 0x170 ctl 0x376 irq 15
scsi host1: pata_legacy
ata3: PATA max PIO4 cmd 0x1e8 ctl 0x3ee irq 11
scsi host1: pata_legacy
ata4: PATA max PIO4 cmd 0x168 ctl 0x36e irq 10
scsi host1: pata_legacy
ata5: PATA max PIO4 cmd 0x1e0 ctl 0x3e6 irq 8
scsi host1: pata_legacy
ata6: PATA max PIO4 cmd 0x160 ctl 0x366 irq 12
This seems needlessly dangerous to me. With the old IDE driver I could
(and did) specify "ide_generic.probe_mask=1" to avoid this clutter (the
ISA card used with this system has a single ATA port only).
I guess it's easy to fix by carrying the `probe_mask' parameter over and
I think we'd rather wait with the removal of the IDE subsystem until we
have a release with this option supported. I may look into it unless
someone beats me to it.
Overall I find it rather disturbing that nobody has noticed this issue
over all these years.
NB it is only earlier this year that I recovered this system from a PSU
failure several years ago, which took the disk the system previously had
with it, so myself I had no chance to get at it any earlier, though I did
mean to have a look as soon as I saw the notice about the scheduled IDE
removal.
Maciej
next prev parent reply other threads:[~2021-03-19 16:49 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-18 4:56 remove the legacy ide driver Christoph Hellwig
2021-03-18 4:56 ` [PATCH 01/10] alpha: use libata instead of " Christoph Hellwig
2021-03-18 5:54 ` Al Viro
2021-03-18 6:07 ` Christoph Hellwig
2021-03-18 17:09 ` Måns Rullgård
2021-03-18 18:03 ` Måns Rullgård
2021-03-18 7:54 ` John Paul Adrian Glaubitz
2021-03-19 16:23 ` Serge Belyshev
2021-03-18 4:56 ` [PATCH 02/10] ARM: disable CONFIG_IDE in footbridge_defconfig Christoph Hellwig
2021-03-19 17:07 ` Russell King - ARM Linux admin
2021-03-19 17:53 ` Russell King - ARM Linux admin
2021-03-22 14:54 ` Christoph Hellwig
2021-03-22 15:15 ` Russell King - ARM Linux admin
2021-03-22 15:18 ` Christoph Hellwig
2021-03-22 15:33 ` Christoph Hellwig
2021-03-23 14:03 ` Russell King - ARM Linux admin
2021-03-22 16:59 ` Russell King - ARM Linux admin
2021-03-22 16:09 ` John Paul Adrian Glaubitz
2021-03-22 16:47 ` Cye Borg
2021-03-22 17:03 ` Russell King - ARM Linux admin
2021-03-22 17:10 ` Cye Borg
2021-03-23 18:43 ` Russell King - ARM Linux admin
2021-03-24 5:47 ` Cye Borg
2021-03-18 4:56 ` [PATCH 03/10] ARM: disable CONFIG_IDE in pxa_defconfig Christoph Hellwig
2021-03-18 4:57 ` [PATCH 04/10] MIPS: disable CONFIG_IDE in sb1250_swarm_defconfig Christoph Hellwig
2021-03-19 0:12 ` Maciej W. Rozycki
2021-03-24 9:59 ` Thomas Bogendoerfer
2021-03-18 4:57 ` [PATCH 05/10] MIPS: switch workpad_defconfig from legacy IDE to libata Christoph Hellwig
2021-03-24 10:00 ` Thomas Bogendoerfer
2021-03-18 4:57 ` [PATCH 06/10] MIPS: disable CONFIG_IDE in rbtx49xx_defconfig Christoph Hellwig
2021-03-24 10:00 ` Thomas Bogendoerfer
2021-03-18 4:57 ` [PATCH 07/10] MIPS: disable CONFIG_IDE in bigsur_defconfig Christoph Hellwig
2021-03-18 10:08 ` Sergei Shtylyov
2021-03-24 10:00 ` Thomas Bogendoerfer
2021-03-18 4:57 ` [PATCH 08/10] MIPS: disable CONFIG_IDE in malta*_defconfig Christoph Hellwig
2021-03-18 10:12 ` Sergei Shtylyov
2021-03-18 14:19 ` Thomas Bogendoerfer
2021-03-19 13:03 ` Christoph Hellwig
2021-03-24 10:01 ` Thomas Bogendoerfer
2021-03-18 4:57 ` [PATCH 09/10] m68k: use libata instead of the legacy ide driver Christoph Hellwig
2021-03-18 4:57 ` [PATCH 10/10] ide: remove " Christoph Hellwig
2021-03-20 3:44 ` Maciej W. Rozycki
2021-03-20 4:04 ` Maciej W. Rozycki
2021-03-19 1:43 ` Finn Thain
2021-03-19 5:43 ` Christoph Hellwig
2021-03-19 16:48 ` Maciej W. Rozycki [this message]
2021-03-21 9:20 ` John Paul Adrian Glaubitz
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