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2010-04-16WAN: flush tx_queue in hdlc_ppp to prevent panic on rmmod hw_driver.Krzysztof Halasa1-0/+6
tx_queue is used as a temporary queue when not allowed to queue skb directly to the hw device driver (which may sleep). Most paths flush it before returning, but ppp_start() currently cannot. Make sure we don't leave skbs pointing to a non-existent device. Thanks to Michael Barkowski for reporting this problem. Signed-off-by: Krzysztof Hałasa <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2010-04-16Merge branch 'bugzilla-15749' into releaseLen Brown1-6/+11
2010-04-16ACPI: EC: Limit burst to 64 bitsAlexey Starikovskiy1-6/+11
access_bit_width field is u8 in ACPICA, thus 256 value written to it becomes 0, causing divide by zero later. Proper fix would be to remove access_bit_width at all, just because we already have access_byte_width, which is access_bit_width / 8. Limit access width to 64 bit for now. https://bugzilla.kernel.org/show_bug.cgi?id=15749 fixes regression caused by the fix for: https://bugzilla.kernel.org/show_bug.cgi?id=14667 Signed-off-by: Alexey Starikovskiy <[email protected]> Signed-off-by: Len Brown <[email protected]>
2010-04-16xfs: don't warn on EAGAIN in inode reclaimDave Chinner1-2/+2
Any inode reclaim flush that returns EAGAIN will result in the inode reclaim being attempted again later. There is no need to issue a warning into the logs about this situation. Signed-off-by: Dave Chinner <[email protected]> Reviewed-by: Alex Elder <[email protected]> Signed-off-by: Alex Elder <[email protected]>
2010-04-16xfs: ensure that sync updates the log tail correctlyDave Chinner1-12/+26
Updates to the VFS layer removed an extra ->sync_fs call into the filesystem during the sync process (from the quota code). Unfortunately the sync code was unknowingly relying on this call to make sure metadata buffers were flushed via a xfs_buftarg_flush() call to move the tail of the log forward in memory before the final transactions of the sync process were issued. As a result, the old code would write a very recent log tail value to the log by the end of the sync process, and so a subsequent crash would leave nothing for log recovery to do. Hence in qa test 182, log recovery only replayed a small handle for inode fsync transactions in this case. However, with the removal of the extra ->sync_fs call, the log tail was now not moved forward with the inode fsync transactions near the end of the sync procese the first (and only) buftarg flush occurred after these transactions went to disk. The result is that log recovery now sees a large number of transactions for metadata that is already on disk. This usually isn't a problem, but when the transactions include inode chunk allocation, the inode create transactions and all subsequent changes are replayed as we cannt rely on what is on disk is valid. As a result, if the inode was written and contains unlogged changes, the unlogged changes are lost, thereby violating sync semantics. The fix is to always issue a transaction after the buftarg flush occurs is the log iѕ not idle or covered. This results in a dummy transaction being written that contains the up-to-date log tail value, which will be very recent. Indeed, it will be at least as recent as the old code would have left on disk, so log recovery will behave exactly as it used to in this situation. Signed-off-by: Dave Chinner <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Signed-off-by: Alex Elder <[email protected]>
2010-04-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds3-6/+11
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] max63xx driver depends on ioremap() [WATCHDOG] max63xx: be careful when disabling the watchdog [WATCHDOG] fixed book E watchdog period register mask. [WATCHDOG] omap4: Fix WDT Kconfig
2010-04-16Merge branch 'for-linus' of ↵Linus Torvalds9-70/+247
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: ASoC: imx-ssi: do not call hrtimer_disable in trigger function ALSA: hda - Add position_fix quirk for Biostar mobo ALSA: hda - add a quirk for Clevo M570U laptop ASoC: imx-ssi: increase minimum periods to 4 ALSA: hda - Avoid invalid "Independent HP" control for VIA codecs ALSA: hda - Fix control element allocations in VIA codec parser ALSA: aaci - Fix alignment faults on ARM Cortex introduced by commit 29a4f2d3 ALSA: hda - Add fix-up for Sony VAIO with ALC269 ALSA: hda - Enhance fix-up table for Realtek codecs ALSA: usb - Fix Oops after usb-midi disconnection ALSA: hda - Fix initial capture source connections of ALC880/260 ALSA: hda - Fix setup for ALC269vb amic and dmic models ALSA: hda - Fix auto-parser of ALC269vb for HP pin NID 0x21 ASoC: imx-ssi: Use a hrtimer in FIQ mode ASoC: imx-pcm-dma-mx2: restart DMA after an error ASoC: imx-ssi: honor IMX_SSI_DMA flag ASoC: wm2000: remove unused #include <linux/version.h> ALSA: hda: Add support for Medion WIM2160
2010-04-16[WATCHDOG] max63xx driver depends on ioremap()Geert Uytterhoeven1-1/+1
Correct fix for the "ioremap() causes build failure on S390" should have been a dependancy on HAS_IOMEM. So we add this dependancy also (and leave the driver in the ARM section for now). Signed-off-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Wim Van Sebroeck <[email protected]>
2010-04-16[WATCHDOG] max63xx: be careful when disabling the watchdogMarc Zyngier1-1/+6
When shutting down the watchdog timer, special care must be taken not to overwrite other bits in the register, as it may be shared with other peripherals. For example, on the Arcom Vulcan, the register is shared between the watchdog and the PCI reset line... Signed-off-by: Marc Zyngier <[email protected]> Signed-off-by: Wim Van Sebroeck <[email protected]>
2010-04-16[WATCHDOG] fixed book E watchdog period register mask.Luuk Paulussen1-1/+1
A previous fix changed the WDTP function to use the period directly, rather than subtracting from 63. However the mask generation was not changed, so the mask was coming out as 0. This patch fixes it. Signed-off-by: Luuk Paulussen <[email protected]> Signed-off-by: Wim Van Sebroeck <[email protected]>
2010-04-16[WATCHDOG] omap4: Fix WDT KconfigSantosh Shilimkar1-3/+3
This patch allows Watchdog timer to be selected for OMAP4 by fixing Kconfig entry Signed-off-by: Santosh Shilimkar <[email protected]> Signed-off-by: Wim Van Sebroeck <[email protected]>
2010-04-16Merge branch 'fix/hda' into for-linusTakashi Iwai3-33/+179
2010-04-16Merge branch 'fix/misc' into for-linusTakashi Iwai2-8/+23
2010-04-16Merge branch 'fix/asoc' into for-linusTakashi Iwai4-29/+45
2010-04-15Merge branch 'master' of ↵David S. Miller1-0/+12
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2010-04-15ip: Fix ip_dev_loopback_xmit()Eric Dumazet2-2/+2
Eric Paris got following trace with a linux-next kernel [ 14.203970] BUG: using smp_processor_id() in preemptible [00000000] code: avahi-daemon/2093 [ 14.204025] caller is netif_rx+0xfa/0x110 [ 14.204035] Call Trace: [ 14.204064] [<ffffffff81278fe5>] debug_smp_processor_id+0x105/0x110 [ 14.204070] [<ffffffff8142163a>] netif_rx+0xfa/0x110 [ 14.204090] [<ffffffff8145b631>] ip_dev_loopback_xmit+0x71/0xa0 [ 14.204095] [<ffffffff8145b892>] ip_mc_output+0x192/0x2c0 [ 14.204099] [<ffffffff8145d610>] ip_local_out+0x20/0x30 [ 14.204105] [<ffffffff8145d8ad>] ip_push_pending_frames+0x28d/0x3d0 [ 14.204119] [<ffffffff8147f1cc>] udp_push_pending_frames+0x14c/0x400 [ 14.204125] [<ffffffff814803fc>] udp_sendmsg+0x39c/0x790 [ 14.204137] [<ffffffff814891d5>] inet_sendmsg+0x45/0x80 [ 14.204149] [<ffffffff8140af91>] sock_sendmsg+0xf1/0x110 [ 14.204189] [<ffffffff8140dc6c>] sys_sendmsg+0x20c/0x380 [ 14.204233] [<ffffffff8100ad82>] system_call_fastpath+0x16/0x1b While current linux-2.6 kernel doesnt emit this warning, bug is latent and might cause unexpected failures. ip_dev_loopback_xmit() runs in process context, preemption enabled, so must call netif_rx_ni() instead of netif_rx(), to make sure that we process pending software interrupt. Same change for ip6_dev_loopback_xmit() Reported-by: Eric Paris <[email protected]> Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2010-04-15Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds8-34/+68
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86/gart: Disable GART explicitly before initialization dma-debug: Cleanup for copy-loop in filter_write() x86/amd-iommu: Remove obsolete parameter documentation x86/amd-iommu: use for_each_pci_dev Revert "x86: disable IOMMUs on kernel crash" x86/amd-iommu: warn when issuing command to uninitialized cmd buffer x86/amd-iommu: enable iommu before attaching devices x86/amd-iommu: Use helper function to destroy domain x86/amd-iommu: Report errors in acpi parsing functions upstream x86/amd-iommu: Pt mode fix for domain_destroy x86/amd-iommu: Protect IOMMU-API map/unmap path x86/amd-iommu: Remove double NULL check in check_device
2010-04-15Merge branch 'for-linus' of ↵Linus Torvalds3-35/+95
git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: cdev: change license of exported header files to MIT license firewire: cdev: comment fixlet firewire: cdev: iso packet documentation firewire: cdev: fix information leak firewire: cdev: require quadlet-aligned headers for transmit packets firewire: cdev: disallow receive packets without header
2010-04-15Merge branch 'for-linus' of ↵Linus Torvalds10-93/+176
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: wacom - switch mode upon system resume Revert "Input: wacom - merge out and in prox events" Input: matrix_keypad - allow platform to disable key autorepeat Input: ALPS - add signature for HP Pavilion dm3 laptops Input: i8042 - spelling fix Input: sparse-keymap - implement safer freeing of the keymap Input: update the status of the Multitouch X driver project Input: clarify the no-finger event in multitouch protocol Input: bcm5974 - retract efi-broken suspend_resume Input: sparse-keymap - free the right keymap on error
2010-04-15Input: wacom - switch mode upon system resumePing Cheng1-5/+7
When Wacom devices wake up from a sleep, the switch mode command (wacom_query_tablet_data) is needed before wacom_open is called. wacom_query_tablet_data should not be executed inside wacom_open since wacom_open is called more than once during probe. wacom_retrieve_hid_descriptor is removed from wacom_resume due to the fact that the required descriptors are stored properly upon system resume. Reported-and-tested-by: Anton Anikin <[email protected]> Signed-off-by: Ping Cheng <[email protected]> Cc: [email protected] Signed-off-by: Dmitry Torokhov <[email protected]>
2010-04-16ASoC: imx-ssi: do not call hrtimer_disable in trigger functionSascha Hauer1-2/+8
Doing so causes a deadlock, so just signal the timer to stop using an atomic variable. Signed-off-by: Sascha Hauer <[email protected]> Acked-by: Liam Girdwood <[email protected]> Signed-off-by: Mark Brown <[email protected]>
2010-04-15firewire: cdev: change license of exported header files to MIT licenseStefan Richter2-17/+47
Among else, this allows projects like libdc1394 to carry copies of the ABI related header files without them or distributors having to worry about effects on the project's overall license terms. Switch to MIT license as suggested by Kristian. Also update the year in the copyright statement according to source history. Cc: Jay Fenlason <[email protected]> Acked-by: Clemens Ladisch <[email protected]> Signed-off-by: Stefan Richter <[email protected]> Signed-off-by: Kristian Høgsberg <[email protected]>
2010-04-15net: dev_pick_tx() fixEric Dumazet1-2/+6
When dev_pick_tx() caches tx queue_index on a socket, we must check socket dst_entry matches skb one, or risk a crash later, as reported by Denys Fedorysychenko, if old packets are in flight during a route change, involving devices with different number of queues. Bug introduced by commit a4ee3ce3 (net: Use sk_tx_queue_mapping for connected sockets) Reported-by: Denys Fedorysychenko <[email protected]> Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2010-04-15ALSA: hda - Add position_fix quirk for Biostar moboTakashi Iwai1-0/+1
The Biostar mobo seems to give a wrong DMA position, resulting in stuttering or skipping sounds on 2.6.34. Since the commit 7b3a177b0d4f92b3431b8dca777313a07533a710, "ALSA: pcm_lib: fix "something must be really wrong" condition", makes the position check more strictly, the DMA position problem is revealed more clearly now. The fix is to use only LPIB for obtaining the position, i.e. passing position_fix=1. This patch adds a static quirk to achieve it as default. Reported-by: Frank Griffin <[email protected]> Cc: Eric Piel <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2010-04-15ALSA: hda - add a quirk for Clevo M570U laptopJoerg Schirottke1-0/+1
Added the matching model for Clevo laptop M570U. Signed-off-by: Joerg Schirottke <[email protected]> Tested-by: Maximilian Gerhard <[email protected]> Cc: <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2010-04-14Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: SELinux: Reduce max avtab size to avoid page allocation failures
2010-04-14Merge branch 'for-linus' of ↵Linus Torvalds10-134/+212
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: use separate class for ceph sockets' sk_lock ceph: reserve one more caps space when doing readdir ceph: queue_cap_snap should always queue dirty context ceph: fix dentry reference leak in dcache readdir ceph: decode v5 of osdmap (pool names) [protocol change] ceph: fix ack counter reset on connection reset ceph: fix leaked inode ref due to snap metadata writeback race ceph: fix snap context reference leaks ceph: allow writeback of snapped pages older than 'oldest' snapc ceph: fix dentry rehashing on virtual .snap dir
2010-04-14Merge branch 'hwmon-for-linus' of ↵Linus Torvalds4-23/+44
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: hwmon: (applesmc) Switch maintainers hwmon: (applesmc) Add iMac9,1 and MacBookPro2,2 support hwmon: (it87) Invalidate cache on temperature sensor change hwmon: (it87) Properly handle wrong sensor type requests hwmon: (it87) Don't arbitrarily enable temperature channels hwmon: (sht15) Properly handle the case CONFIG_REGULATOR=n hwmon: (sht15) Fix sht15_calc_temp interpolation function
2010-04-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds5-40/+68
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: lguest: stop using KVM hypercall mechanism lguest: workaround cmpxchg8b_emu by ignoring cli in the guest.
2010-04-14Merge branch 'for-linus' of ↵Linus Torvalds2-5/+7
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: Fix asm constraints for atomic_sub_and_test() and atomic_add_negative() m68k: Fix `struct sigcontext' for ColdFire
2010-04-15ASoC: imx-ssi: increase minimum periods to 4Sascha Hauer1-1/+1
Currently the notification of elapsed periods is not very exact. Increase minimum periods to 4 as suggested by Liam Girdwood. Signed-off-by: Sascha Hauer <[email protected]> Acked-by: Liam Girdwood <[email protected]> Signed-off-by: Mark Brown <[email protected]>
2010-04-15SELinux: Reduce max avtab size to avoid page allocation failuresStephen Smalley1-1/+1
Reduce MAX_AVTAB_HASH_BITS so that the avtab allocation is an order 2 allocation rather than an order 4 allocation on x86_64. This addresses reports of page allocation failures: http://marc.info/?l=selinux&m=126757230625867&w=2 https://bugzilla.redhat.com/show_bug.cgi?id=570433 Reported-by: Russell Coker <[email protected]> Signed-off-by: Stephen D. Smalley <[email protected]> Acked-by: Eric Paris <[email protected]> Signed-off-by: James Morris <[email protected]>
2010-04-14fib: suppress lockdep-RCU false positive in FIB trie.Eric Dumazet1-1/+3
Followup of commit 634a4b20 Allow tnode_get_child_rcu() to be called either under rcu_read_lock() protection or with RTNL held. Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2010-04-14m68k: Fix asm constraints for atomic_sub_and_test() and atomic_add_negative()Geert Uytterhoeven1-2/+6
Recently, we started seeing this on allmodconfig builds: CC mm/memcontrol.o {standard input}: Assembler messages: {standard input}:4076: Error: operands mismatch -- statement `subl 12(%fp),170(%a0)' ignored Correct the asm constraint, like done for m68knommu. Signed-off-by: Geert Uytterhoeven <[email protected]>
2010-04-14m68k: Fix `struct sigcontext' for ColdFireMaxim Kuvyrkov1-3/+1
LibSegFault uses piggybacks sc_fpstate field of the `struct sigcontext' and this patch avoids LibSegFault overflowing this field. Also this removes an unnecessary divergence from classic m68k. Signed-off-by: Maxim Kuvyrkov <[email protected]> Signed-off-by: Geert Uytterhoeven <[email protected]>
2010-04-14vsprintf: Change struct printf_spec.precision from s8 to s16Joe Perches1-5/+5
Commit ef0658f3de484bf9b173639cd47544584e01efa5 changed precision from int to s8. There is existing kernel code that uses a larger precision. An example from the audit code: vsnprintf(...,..., " msg='%.1024s'", (char *)data); which overflows precision and truncates to nothing. Extending precision size fixes the audit system issue. Other changes: Change the size of the struct printf_spec.type from u16 to u8 so sizeof(struct printf_spec) stays as small as possible. Reorder the struct members so sizeof(struct printf_spec) remains 64 bits without alignment holes. Document the struct members a bit more. Original-patch-by: Eric Paris <[email protected]> Signed-off-by: Joe Perches <[email protected]> Tested-by: Justin P. Mattock <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2010-04-14hwmon: (applesmc) Switch maintainersHenrik Rydberg1-2/+2
Nicolas has expressed a wish to be relieved from the maintenance of applesmc, so we simply switch maintainer with this patch. Signed-off-by: Henrik Rydberg <[email protected]> Acked-by: Nicolas Boichat <[email protected]> Signed-off-by: Jean Delvare <[email protected]>
2010-04-14hwmon: (applesmc) Add iMac9,1 and MacBookPro2,2 supportJustin P. Mattock1-0/+18
Add the iMac9,1 and the MacBookPro2,2 temperature sensors to hwmon driver applesmc to fix kernel bug #14429: https://bugzilla.kernel.org/show_bug.cgi?id=14429 Signed-off-by: Justin P. Mattock <[email protected]> Acked-by: Nicolas Boichat <[email protected]> Signed-off-by: Jean Delvare <[email protected]>
2010-04-14hwmon: (it87) Invalidate cache on temperature sensor changeJean Delvare1-0/+1
When any temperature sensor type is changed, the corresponding temperature value needs to be updated. The register caching mechanism may delay this update, so we want to invalidate the cache to force an immediate update. Signed-off-by: Jean Delvare <[email protected]>
2010-04-14hwmon: (it87) Properly handle wrong sensor type requestsJean Delvare1-10/+10
Currently, if someone tries to set the thermal sensor type to an unsupported value, subsequent accesses to the chip may temporarily show the sensor in question as disabled. Use a temporary variable and only update the cached value on success, to prevent such confusion. Signed-off-by: Jean Delvare <[email protected]>
2010-04-14hwmon: (it87) Don't arbitrarily enable temperature channelsJean Delvare1-8/+5
Temperature channels can be used in 2 different modes (thermistor and thermal diode) and we don't know which one, if any, is correct for every given board. So don't arbitrarily choose one. Instead, leave the temperature channels untouched. They can be configured from user-space if needed anyway. Signed-off-by: Jean Delvare <[email protected]>
2010-04-14hwmon: (sht15) Properly handle the case CONFIG_REGULATOR=nJean Delvare1-1/+6
When CONFIG_REGULATOR isn't set, regulator_get_voltage() returns 0. Properly handle this case by not trusting the value. Reported-by: Jerome Oufella <[email protected]> Signed-off-by: Jean Delvare <[email protected]> Cc: Jonathan Cameron <[email protected]> Acked-by: Mark Brown <[email protected]> Cc: [email protected]
2010-04-14hwmon: (sht15) Fix sht15_calc_temp interpolation functionJerome Oufella1-3/+3
I discovered two issues. First the previous sht15_calc_temp() loop did not iterate through the temppoints array since the (data->supply_uV > temppoints[i - 1].vdd) test is always true in this direction. Also the two-points linear interpolation function was returning biased values due to a stray division by 1000 which shouldn't be there. [JD: Also change the default value for d1 from 0 to something saner.] Signed-off-by: Jerome Oufella <[email protected]> Acked-by: Jonathan Cameron <[email protected]> Signed-off-by: Jean Delvare <[email protected]> Cc: [email protected]
2010-04-14ALSA: hda - Avoid invalid "Independent HP" control for VIA codecsTakashi Iwai1-16/+23
Some VIA codecs have no multiple source selection for headphone pins, thus it's useless (and wrong) to create "Independent HP" control on them. This patch adds the check of connections to skip the control in such a case. Signed-off-by: Takashi Iwai <[email protected]>
2010-04-14ALSA: hda - Fix control element allocations in VIA codec parserTakashi Iwai1-1/+1
The commit 5b0cb1d850c26893b1468b3a519433a1b7a176be ALSA: hda - add more NID->Control mapping breaks the control element allocation by returning a wrong value. Let's fix it. Signed-off-by: Takashi Iwai <[email protected]>
2010-04-14lguest: stop using KVM hypercall mechanismRusty Russell4-40/+56
This is a partial revert of 4cd8b5e2a159 "lguest: use KVM hypercalls"; we revert to using (just as questionable but more reliable) int $15 for hypercalls. I didn't revert the register mapping, so we still use the same calling convention as kvm. KVM in more recent incarnations stopped injecting a fault when a guest tried to use the VMCALL instruction from ring 1, so lguest under kvm fails to make hypercalls. It was nice to share code with our KVM cousins, but this was overreach. Signed-off-by: Rusty Russell <[email protected]> Cc: Matias Zabaljauregui <[email protected]> Cc: Avi Kivity <[email protected]>
2010-04-14lguest: workaround cmpxchg8b_emu by ignoring cli in the guest.Rusty Russell1-0/+12
It's only used by cmpxchg8b_emu (see db677ffa5f5a for the gory details), and fixing that to be paravirt aware would be more work than simply ignoring it (and AFAICT only help lguest). This makes lguest work on machines which have cmpxchg8b, for kernels compiled for older processors. (We can't emulate it properly: the popf which expects to restore interrupts does not trap). Signed-off-by: Rusty Russell <[email protected]> Cc: Jeremy Fitzhardinge <[email protected]> Cc: [email protected]
2010-04-14tun: orphan an skb on txMichael S. Tsirkin1-0/+4
The following situation was observed in the field: tap1 sends packets, tap2 does not consume them, as a result tap1 can not be closed. This happens because tun/tap devices can hang on to skbs undefinitely. As noted by Herbert, possible solutions include a timeout followed by a copy/change of ownership of the skb, or always copying/changing ownership if we're going into a hostile device. This patch implements the second approach. Note: one issue still remaining is that since skbs keep reference to tun socket and tun socket has a reference to tun device, we won't flush backlog, instead simply waiting for all skbs to get transmitted. At least this is not user-triggerable, and this was not reported in practice, my assumption is other devices besides tap complete an skb within finite time after it has been queued. A possible solution for the second issue would not to have socket reference the device, instead, implement dev->destructor for tun, and wait for all skbs to complete there, but this needs some thought, probably too risky for 2.6.34. Signed-off-by: Michael S. Tsirkin <[email protected]> Tested-by: Yan Vugenfirer <[email protected]> Acked-by: Herbert Xu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2010-04-14ARM: 5974/1: arm/mach-at91 Makefile: remove two blanks.Ernst Schwab1-2/+2
Cosmetic change to mach-at91 Makefile: remove two blanks introduced by earlier patches. Signed-off-by: Ernst Schwab <[email protected]> Signed-off-by: Russell King <[email protected]>
2010-04-14rcu: Update docs for rcu_access_pointer and rcu_dereference_protectedPaul E. McKenney4-22/+58
Update examples and lists of APIs to include these new primitives. Signed-off-by: Paul E. McKenney <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
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