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In commit 567aba0b7997dad5fe3fb4aeb174ee9018df8c5b, the probe address
for tda8290_probe and tda8295_probe was hard-coded to 0x4b, which is the
default i2c address for those devices, but its possible for the device
to be at an alternate address, 0x42, which is the case for the HVR-1950.
If we probe the wrong address, probe fails and we have a non-working
device. We have the actual address passed into the function by way of
i2c_props, we just need to use it. Also fix up some copy/paste comment
issues and streamline debug spew a touch. Verified to restore my
HVR-1950 to full working order.
Special thanks to Ken Bass for reporting the issue in the first place,
and to both he and Gary Buhrmaster for aiding in debugging and analysis
of the problem.
Reported-by: Ken Bass <kbass@kenbass.com>
Tested-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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There's a Realtek combo card reader and IR receiver device with multiple
usb interfaces on it. The mceusb driver is incorrectly grabbing all of
them. This change should make it bind to only interface 2 (patch based
on lsusb output on the linux-media list from Lucian Muresan).
Tested regression-free with the six mceusb devices I have myself.
Reported-by: Patrick Boettcher <pboettcher@kernellabs.com>
Reported-by: Lucian Muresan <lucianm@users.sourceforge.net>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The CIR Wake FIFO is 67 bytes long, but the stock remote appears to only
populate 65 of them. Limit comparison to 65 bytes, and wake from suspend
works a whole lot better (it wasn't working at all for most folks).
Fix based on comparison with the old lirc_wb677 driver from Nuvoton,
debugging and testing done by Dave Treacy by way of the lirc mailing
list.
Reported-by: Dave Treacy <davetreacy@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The newest variants of the HVR-1600 have an s5h1411/tda18271 for the digital
frontend. Add support for these boards.
Thanks to Hauppauge Computer Works for providing sample hardware.
[awalls@md.metrocast.net: Changed an additional log message to clarify for
the end user that the driver is defaulting to an original HVR-1600 for
unknown model numbers.]
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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After upgrading the kernel from stock Ubuntu 7.10 to
10.04, with no hardware changes, I started getting the dreaded DMA
TIMEOUT errors, followed by inability to encode until the machine was
rebooted.
I came across a post from Andy in March
(http://www.gossamer-threads.com/lists/ivtv/users/40943#40943) where he
speculates that perhaps the corrective actions being taken after a DMA
ERROR are not sufficient to recover the situation. After some testing
I suspect that this is indeed the case, and that in fact the corrective
action may be what hangs the card's DMA engine, rather than the
original error.
Specifically these DMA ERROR IRQs seem to present with two different
values in the IVTV_REG_DMASTATUS register: 0x11 and 0x13. The current
corrective action is to clear that status register back to 0x01 or
0x03, and then issue the next DMA request. In the case of a 0x13 this
seems to result in a minor glitch in the encoded stream due to the
failed transfer that was not retried, but otherwise things continue OK.
In the case of a 0x11 the card's DMA write engine is never heard from
again, and a DMA TIMEOUT follows shortly after. 0x11 is the killer.
I suspect that the two cases need to be handled differently. The
difference is in bit 1 (0x02), which is set when the error is about to
be successfully recovered, and clear when things are about to go bad.
Bit 1 of DMASTATUS is described differently in different places either
as a positive "write finished", or an inverted "write busy". If we
take the first definition, then when an error arises with state 0x11,
it means that the write did not complete. It makes sense to start a
new transfer, as in the current code. But if we take the second
definition, then 0x11 means "an error but the write engine is still
busy". Trying to feed it a new transfer in this situation might not be
a good idea.
As an experiment, I added code to ignore the DMA ERROR IRQ if DMASTATUS
is 0x11. I.e., don't start a new transfer, don't clear our flags, etc.
The hope was that the card would complete the transfer and issue a ENC
DMA COMPLETE, either successfully or with an error condition there.
However the card still hung.
The only remaining corrective action being taken with a 0x11 status was
then the write back to the status register to clear the error, i.e.
DMASTATUS = DMASTATUS & ~3. This would have the effect of clearing the
error bit 4, while leaving the lower bits indicating DMA write busy.
Strangely enough, removing this write to the status register solved the
problem! If the DMA ERROR IRQ with DMASTATUS=0x11 is completely
ignored, with no corrective action at all, then the card will complete
the transfer and issue a new IRQ. If the status register is written to
when it has the value 0x11, then the DMA engine hangs. Perhaps it's
illegal to write to
DMASTATUS while the read or write busy bit is set? At any rate, it
appears that the current corrective action is indeed making things
worse rather than better.
I put together a patch that modifies ivtv_irq_dma_err to do the
following:
- Don't write back to IVTV_REG_DMASTATUS.
- If write-busy is asserted, leave the card alone. Just extend the
timeout slightly.
- If write-busy is de-asserted, retry the current transfer.
This has completely fixed my DMA TIMEOUT woes. DMA ERR events still
occur, but now they seem to be correctly handled. 0x11 events no
longer hang the card, and 0x13 events no longer result in a glitch in
the stream, as the failed transfer is retried. I'm happy.
I've inlined the patch below in case it is of interest. As described
above, I have a theory about why it works (based on a different
interpretation of bit 1 of DMASTATUS), but I can't guarantee that my
theory is correct. There may be another explanation, or it may be a
fluke. Maybe ignoring that IRQ entirely would be equally effective?
Maybe the status register read/writeback sequence is race condition if
the card changes it in the mean time? Also as I am using a PVR-150
only, I have not been able to test it on other cards, which may be
especially relevant for 350s that support concurrent decoding.
Hopefully the patch does not break the DMA READ path.
Mike
[awalls@md.metrocast.net: Modified patch to add a verbose comment, make minor
brace reformats, and clear the error flags in the IVTV_REG_DMASTATUS iff both
read and write DMA were not in progress. Mike's conjecture about a race
condition with the writeback is correct; it can confuse the DMA engine.]
[Comment and analysis from the ML post by Michael <mike@rsy.com>]
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Fix the probing of cx2583x chips, because two controls were clustered
that are not created for these chips.
This regression was introduced in 2.6.36.
Signed-off-by: Sven Barth <pascaldragon@googlemail.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The previous revert-commit, that affected cx23885-i2c.c, left some
unused labels that the compiler griped about. Clean them up.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This reverts commit 44835f197bf1e3f57464f23dfb239fef06cf89be.
With the CX23885 hardware I2C master, checking for I2C slave ACK/NAK
is not valid when the I2C_EXTEND or I2C_NOSTOP bits are set.
Revert the commit that checks for I2C slave ACK/NAK on all transactions,
so that XC5000 tuners work with the CX23885 again.
Thanks go to Mark Zimmerman for reporting and bisecting this problem.
Bisected-by: Mark Zimmerman <markzimm@frii.com>
Reported-by: Mark Zimmerman <markzimm@frii.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This patch adds the pid filtering for the dib7000M demod. It also
corrects the pid filtering for the dib7700 based board. It should
prevent an oops, when using dib7700p based board.
References: https://bugzilla.novell.com/show_bug.cgi?id=644807
Signed-off-by: Olivier Grenie <olivier.grenie@dibcom.fr>
Signed-off-by: Patrick Boettcher <patrick.boettcher@dibcom.fr>
Tested-by: Pavel SKARKA <paul.sp@seznam.cz>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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With the current matching rules the lookup for rc protocol named rc-5-sz matches with "rc-5" before finding "rc-5-sz". Thus one is able to never enable/disable the rc-5-sz protocol via sysfs.
Fix the lookup to require an exact match which allows the manipulation of sz protocol.
Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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au0828: fix VBI handling when in V4L2 streaming mode
It turns up V4L2 streaming mode (a.k.a mmap) was broken for VBI streaming.
This was causing libzvbi to fall back to V4L1 capture mode, and is a blatent
violation of the V4L2 specification.
Make the implementation work properly in this mode.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Changeset 4651918a4afdd49bdea21d2f919b189ef17a6399 changed the way events
are stored. However, it forgot to fix ir_raw_event_store_edge() to work
with the new way. Due to that, the decoders will likely do bad things.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Change for firmware re-loading and updated firmware versions.
Signed-off-by: Dean Anderson <linux-dev@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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video_device is already being freed in video_device.release callback on
release.
Signed-off-by: Pawel Osciak <pawel@osciak.com>
Reported-by: Roland Kletzing <devzero@web.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Driver Version v1.75 Kernel oops appears in 2.6.37-rc8 in
lme_firmware_switch because of a memcpy to a const char.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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One saa7111 device is reporting a different ID:
saa7115 0-0024: chip found @ 0x48 (ID 0f7111d0e111111) does not match a known saa711x chip.
As this is for sure a saa7111, change the detection code to also
cover this device.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The streamzap driver has relatively low sampling resolution, and any
delays in reporting events seem to cause some minor problems for the
likes of irw when using the lirc bridge driver, resulting in a single
keypress registering as multiple independent ones, rather than as a
single press with repeats. If we call ir_raw_event_handle() more
frequently and reset the rawir kfifo at end-of-signal, the behavior
improves quite a bit.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Make sure rawir struct is zeroed out before populating it for each
ir_raw_event_store_with_filter() call, and when we see a trailing 0x80
packet (end-of-data), issue an ir_raw_event_reset() call.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Due to my own stupidity, some of the wrong time unit conversion macros
were being used inside some of the IR drivers I've been working on. Fix
that, and convert over some additional places to also use the macros.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Some occasionally useful debug spew disappeared as part of a feature
update a while back, and I'm finding myself in need of it again to help
diagnose some issues.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Add the same "are you ready?" i2c_master_send() poll command to
get_key_haup_xvr found in lirc_zilog, which is apparently seen in
the Windows driver for the PVR-150 w/a z8. This stabilizes what is
received from both the HD-PVR and HVR-1950, even with their polling
intervals at the default of 100, thus the removal of the custom
260ms polling_interval in pvrusb2-i2c-core.c.
Acked-by: Andy Walls <awalls@md.metrocast.net>
Acked-by: Mike Isely <isely@isely.net>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Both the HD-PVR and HVR-1950, driven by the hdpvr and pvrusb2 drivers
respectively, have a zilog z8 chip exposed via i2c. These are both
usb-connected devices, and on both of them, back-to-back i2c_master_send
calls that work fine with a z8 on a pci card fail with a -EIO, as the
chip isn't yet ready from the prior command. To cope with that, add a
delay and retry loop where necessary.
Acked-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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We have to actually call i2c_new_device() once for each of the rx and tx
addresses. Also improve error-handling and device remove i2c cleanup.
Reviewed-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Per http://mediacenterguides.com/book/export/html/31 and investigation
by Erin, we were missing these last three mappings to complete the mce
key table. Lets remedy that.
Reported-by: Erin Simonds <fisslefink@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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In some cases, some frames may not end with the JPEG end of frame.
Being not complete, they are now discarded.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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The problem was introduced by the commit 2af0b4c60cc0daf0.
Some registers were no more initialized.
Tested-by: <Giovanni Scafora giovanni@archlinux.org>
Tested-by: <Sergey Manucharian sm@ingeniware.com>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'media_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (101 commits)
[media] staging/lirc: fix mem leaks and ptr err usage
[media] hdpvr: reduce latency of i2c read/write w/recycled buffer
[media] hdpvr: enable IR part
[media] rc/mceusb: timeout should be in ns, not us
[media] v4l2-device: fix 'use-after-freed' oops
[media] v4l2-dev: don't memset video_device.dev
[media] zoran: use video_device_alloc instead of kmalloc
[media] w9966: zero device state after a detach
[media] v4l: Fix a use-before-set in the control framework
[media] v4l: Include linux/videodev2.h in media/v4l2-ctrls.h
[media] DocBook/v4l: update V4L2 revision and update copyright years
[media] DocBook/v4l: fix validation error in dev-rds.xml
[media] v4l2-ctrls: queryctrl shouldn't attempt to replace V4L2_CID_PRIVATE_BASE IDs
[media] v4l2-ctrls: fix missing 'read-only' check
[media] pvrusb2: Provide more information about IR units to lirc_zilog and ir-kbd-i2c
[media] ir-kbd-i2c: Add back defaults setting for Zilog Z8's at addr 0x71
[media] lirc_zilog: Update TODO.lirc_zilog
[media] lirc_zilog: Add Andy Walls to copyright notice and authors list
[media] lirc_zilog: Remove useless struct i2c_driver.command function
[media] lirc_zilog: Remove unneeded tests for existence of the IR Tx function
...
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Fix up comments in the key management code. No functional changes.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Do a bit of a style clean up in the key management code. No functional
changes.
Done using:
perl -p -i -e 's!^/[*]*/\n!!' security/keys/*.c
perl -p -i -e 's!} /[*] end [a-z0-9_]*[(][)] [*]/\n!}\n!' security/keys/*.c
sed -i -s -e ": next" -e N -e 's/^\n[}]$/}/' -e t -e P -e 's/^.*\n//' -e "b next" security/keys/*.c
To remove /*****/ lines, remove comments on the closing brace of a
function to name the function and remove blank lines before the closing
brace of a function.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: fix up CIFSSMBEcho for unaligned access
cifs: fix unaligned accesses in cifsConvertToUCS
cifs: clean up unaligned accesses in cifs_unicode.c
cifs: fix unaligned access in check2ndT2 and coalesce_t2
cifs: clean up unaligned accesses in validate_t2
cifs: use get/put_unaligned functions to access ByteCount
cifs: move time field in cifsInodeInfo
cifs: TCP_Server_Info diet
CIFS: Implement cifs_strict_readv (try #4)
CIFS: Implement cifs_file_strict_mmap (try #2)
CIFS: Implement cifs_strict_fsync
CIFS: Make cifsFileInfo_put work with strict cache mode
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
x86,percpu: Move out of place 64 bit ops into X86_64 section
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
* 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: note the nested NOT_RUNNING test in worker_clr_flags() isn't a noop
workqueue: relax lockdep annotation on flush_work()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits)
um: Use generic irq Kconfig
tile: Use generic irq Kconfig
sparc: Use generic irq Kconfig
score: Use generic irq Kconfig
powerpc: Use generic irq Kconfig
parisc: Use generic irq Kconfig
mn10300: Use generic irq Kconfig
microblaze: Use generic irq Kconfig
m68knommu: Use generic irq Kconfig
ia64: Use generic irq Kconfig
frv: Use generic irq Kconfig
blackfin: Use generic irq Kconfig
alpha: Use generic irq Kconfig
genirq: Remove __do_IRQ
m32r: Convert to generic irq Kconfig
m32r: Convert usrv platform irq handling
m32r: Convert opsput_lcdpld irq chip
m32r: Convert opsput lanpld irq chip
m32r: Convert opsput pld irq chip
m32r: Convert opsput irq chip
...
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/bug-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen: p2m: correctly initialize partial p2m leaf
xen: fix non-ANSI function warning in irq.c
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: core: fix unstable I/O with Canon camcorder
* 'fwnet' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: net: is not experimental anymore
firewire: net: invalidate ARP entries of removed nodes
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: hda - Fix EAPD to low on CZC P10T tablet computer with ALC662
ALSA: HDA: Add SKU ignore for another Thinkpad Edge 14
ALSA: hda - Fix "unused variable" compile warning
ALSA: hda - Add quirk for HP Z-series workstation
Revert "ALSA: HDA: Create mixers on ALC887"
ASoC: PXA: Fix codec address on Zipit Z2
ASoC: PXA: Fix jack detection on Zipit Z2
ASoC: Blackfin: fix DAI/SPORT config dependency issues
ASoC: Blackfin TDM: use external frame syncs
ASoC: Blackfin AC97: fix build error after multi-component update
ASoC: Blackfin TDM: fix missed snd_soc_dai_get_drvdata update
ASoC: documentation updates
ALSA: ice1712 delta - initialize SPI clock
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* 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6:
powerpc/83xx: fix build failures on dt compatible list.
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (34 commits)
powerpc/mpic: Fix mask/unmask timeout message
powerpc/pseries: Add BNX2=m to defconfig
powerpc: Enable 64kB pages and 1024 threads in pseries config
powerpc: Disable mcount tracers in pseries defconfig
powerpc/boot/dts: Install dts from the right directory
powerpc: machine_check_generic is wrong on 64bit
powerpc: Check RTAS extended log flag before checking length
powerpc: Fix corruption when grabbing FWNMI data
powerpc: Rework pseries machine check handler
powerpc: Don't silently handle machine checks from userspace
powerpc: Remove duplicate debugger hook in machine_check_exception
powerpc: Never halt RTAS error logging after receiving an unrecoverable machine check
powerpc: Don't force MSR_RI in machine_check_exception
powerpc: Print 32 bits of DSISR in show_regs
powerpc/kdump: Disable ftrace during kexec
powerpc/kdump: Move crash_kexec_stop_spus to kdump crash handler
powerpc/kexec: Remove empty ppc_md.machine_kexec_prepare
powerpc/kexec: Don't initialise kexec hooks to default handlers
powerpc/kdump: Remove ppc_md.machine_crash_shutdown
powerpc/kexec: Remove ppc_md.machine_kexec
...
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The patch "thp: export maybe_mkwrite" (commit 14fd403f2146) breaks
systems without MMU.
Error log:
CC arch/microblaze/mm/init.o
In file included from include/linux/mman.h:14,
from arch/microblaze/mm/consistent.c:24:
include/linux/mm.h: In function 'maybe_mkwrite':
include/linux/mm.h:482: error: implicit declaration of function 'pte_mkwrite'
include/linux/mm.h:482: error: incompatible types in assignment
Signed-off-by: Michal Simek <monstr@monstr.eu>
CC: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The cisco.com address will stop working soon, and besides no one can
remember the second "d" in "rolandd" or how to spell "rdreier."
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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After changing the p2m mapping to a tree by
commit 58e05027b530ff081ecea68e38de8d59db8f87e0
xen: convert p2m to a 3 level tree
and trying to boot a DomU with 615MB of memory, the following crash was
observed in the dump:
kernel direct mapping tables up to 26f00000 @ 1ec4000-1fff000
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<c0107397>] xen_set_pte+0x27/0x60
*pdpt = 0000000000000000 *pde = 0000000000000000
Adding further debug statements showed that when trying to set up
pfn=0x26700 the returned mapping was invalid.
pfn=0x266ff calling set_pte(0xc1fe77f8, 0x6b3003)
pfn=0x26700 calling set_pte(0xc1fe7800, 0x3)
Although the last_pfn obtained from the startup info is 0x26700, which
should in turn not be hit, the additional 8MB which are added as extra
memory normally seem to be ok. This lead to looking into the initial
p2m tree construction, which uses the smaller value and assuming that
there is other code handling the extra memory.
When the p2m tree is set up, the leaves are directly pointed to the
array which the domain builder set up. But if the mapping is not on a
boundary that fits into one p2m page, this will result in the last leaf
being only partially valid. And as the invalid entries are not
initialized in that case, things go badly wrong.
I am trying to fix that by checking whether the current leaf is a
complete map and if not, allocate a completely new page and copy only
the valid pointers there. This may not be the most efficient or elegant
solution, but at least it seems to allow me booting DomUs with memory
assignments all over the range.
BugLink: http://bugs.launchpad.net/bugs/686692
[v2: Redid a bit of commit wording and fixed a compile warning]
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
quota: Fix deadlock during path resolution
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No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jeff Dike <jdike@addtoit.com>
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No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
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No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: "David S. Miller" <davem@davemloft.net>
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No functional change
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Chen Liqin <liqin.chen@sunplusct.com>
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No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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