Stephen Warren [Tue, 19 Apr 2011 16:18:01 +0000 (10:18 -0600)]
ARM: Tegra: select MACH_HAS_SND_SOC_TEGRA_WM8903
CONFIG_SND_SOC_TEGRA_WM8903 is useful for many Tegra boards. To avoid the
ASoC tegra/Kconfig enumerating them all, instead have the Tegra machine
Kconfig select MACH_HAS_SND_SOC_TEGRA_WM8903 where appropriate, and have
SND_SOC_TEGRA_WM8903 depend on this.
[Redid ASoC diff so it applies. -- broonie]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Stephen Warren [Tue, 12 Apr 2011 17:29:01 +0000 (11:29 -0600)]
ARM: Tegra: Add to tegra_wm8903_platform_data
Seaboard derivate Kaen has a GPIO to mute the headphone output. Add a field
to tegra_wm8903_platform_data so the board files can pass the GPIO number
for that to the ASoC machine driver.
Also, initialize this new field to a "not present" value for Harmony.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Stephen Warren [Tue, 12 Apr 2011 17:29:00 +0000 (11:29 -0600)]
ASoC: Tegra: Rename pdev tegra-snd-harmony to tegra-snd-wm8903
Soon, this machine driver will be updated to handle a number of Tegra boards
using the WM8903 codec. Rename the platform device in advance to reflect this.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Stephen Warren [Tue, 12 Apr 2011 17:28:59 +0000 (11:28 -0600)]
ARM: Tegra: Rename harmony_audio.h -> tegra_wm8903_pdata.h
The audio driver will soon support more than just the Tegra Harmony board.
Rename the platform data header file and data type to reflect this.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Linus Torvalds [Tue, 12 Apr 2011 00:21:51 +0000 (17:21 -0700)]
Linux 2.6.39-rc3
Linus Torvalds [Mon, 11 Apr 2011 22:48:57 +0000 (15:48 -0700)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: use proper interfaces for on-stack plugging
xfs: fix xfs_debug warnings
xfs: fix variable set but not used warnings
xfs: convert log tail checking to a warning
xfs: catch bad block numbers freeing extents.
xfs: push the AIL from memory reclaim and periodic sync
xfs: clean up code layout in xfs_trans_ail.c
xfs: convert the xfsaild threads to a workqueue
xfs: introduce background inode reclaim work
xfs: convert ENOSPC inode flushing to use new syncd workqueue
xfs: introduce a xfssyncd workqueue
xfs: fix extent format buffer allocation size
xfs: fix unreferenced var error in xfs_buf.c
Also, applied patch from Tony Luck that fixes ia64:
xfs_destroy_workqueues() should not be tagged with__exit
in the branch before merging.
Luck, Tony [Mon, 11 Apr 2011 19:06:12 +0000 (12:06 -0700)]
xfs_destroy_workqueues() should not be tagged with__exit
ia64 throws away .exit sections for the built-in CONFIG case, so routines
that are used in other circumstances should not be tagged as __exit.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 11 Apr 2011 22:45:47 +0000 (15:45 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix data corruption regression by reverting commit
6de9843dab3f
ext4: Allow indirect-block file to grow the file size to max file size
ext4: allow an active handle to be started when freezing
ext4: sync the directory inode in ext4_sync_parent()
ext4: init timer earlier to avoid a kernel panic in __save_error_info
jbd2: fix potential memory leak on transaction commit
ext4: fix a double free in ext4_register_li_request
ext4: fix credits computing for indirect mapped files
ext4: remove unnecessary [cm]time update of quota file
jbd2: move bdget out of critical section
Linus Torvalds [Mon, 11 Apr 2011 22:45:17 +0000 (15:45 -0700)]
Merge branch 'for-2.6.39' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.39' of git://linux-nfs.org/~bfields/linux:
nfsd4: fix oops on lock failure
nfsd: fix auth_domain reference leak on nlm operations
Linus Torvalds [Mon, 11 Apr 2011 22:44:38 +0000 (15:44 -0700)]
Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6
* 'spi/merge' of git://git.secretlab.ca/git/linux-2.6:
dt/fsldma: fix build warning caused by of_platform_device changes
spi: Fix race condition in stop_queue()
gpio/pch_gpio: Fix output value of pch_gpio_direction_output()
gpio/ml_ioh_gpio: Fix output value of ioh_gpio_direction_output()
gpio/pca953x: fix error handling path in probe() call
Linus Torvalds [Mon, 11 Apr 2011 17:53:11 +0000 (10:53 -0700)]
pci: fix PCI bus allocation alignment handling
In commit
13583b16592a ("PCI: refactor io size calculation code") Ram
had a thinko in the refactorization of the code: the end result used the
variable 'align' for the bus alignment, but the original code used
'min_align'.
Since then, another use of that 'align' variable got introduced by
commit
c8adf9a3e873 ("PCI: pre-allocate additional resources to devices
only after successful allocation of essential resources.")
Fix both of those uses to use 'min_align' as they should.
Daniel Hellstrom <daniel@gaisler.com>
Acked-by: Ram Pai <linuxram@us.ibm.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 11 Apr 2011 14:27:24 +0000 (07:27 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (34 commits)
net: Add support for SMSC LAN9530, LAN9730 and LAN89530
mlx4_en: Restoring RX buffer pointer in case of failure
mlx4: Sensing link type at device initialization
ipv4: Fix "Set rt->rt_iif more sanely on output routes."
MAINTAINERS: add entry for Xen network backend
be2net: Fix suspend/resume operation
be2net: Rename some struct members for clarity
pppoe: drop PPPOX_ZOMBIEs in pppoe_flush_dev
dsa/mv88e6131: add support for mv88e6085 switch
ipv6: Enable RFS sk_rxhash tracking for ipv6 sockets (v2)
be2net: Fix a potential crash during shutdown.
bna: Fix for handling firmware heartbeat failure
can: mcp251x: Allow pass IRQ flags through platform data.
smsc911x: fix mac_lock acquision before calling smsc911x_mac_read
iwlwifi: accept EEPROM version 0x423 for iwl6000
rt2x00: fix cancelling uninitialized work
rtlwifi: Fix some warnings/bugs
p54usb: IDs for two new devices
wl12xx: fix potential buffer overflow in testmode nvs push
zd1211rw: reset rx idle timer from tasklet
...
Ira W. Snyder [Thu, 7 Apr 2011 17:33:03 +0000 (10:33 -0700)]
dt/fsldma: fix build warning caused by of_platform_device changes
Commit
000061245a6797d542854106463b6b20fbdcb12e, "dt/powerpc:
Eliminate users of of_platform_{,un}register_driver" forgot to convert
the type of structure passed into platform_device_register() when it
was converted from of_platform_device_register. Fix it.
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Theodore Ts'o [Mon, 11 Apr 2011 02:30:07 +0000 (22:30 -0400)]
ext4: fix data corruption regression by reverting commit
6de9843dab3f
Revert commit
6de9843dab3f2a1d4d66d80aa9e5782f80977d20, since it
caused a data corruption regression with BitTorrent downloads. Thanks
to Damien for discovering and bisecting to find the problem commit.
https://bugzilla.kernel.org/show_bug.cgi?id=32972
Reported-by: Damien Grassart <damien@grassart.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Kazuya Mio [Mon, 11 Apr 2011 02:06:36 +0000 (22:06 -0400)]
ext4: Allow indirect-block file to grow the file size to max file size
We can create
4402345721856 byte file with indirect block mapping.
However, if we grow an indirect-block file to the size with ftruncate(),
we can see an ext4 warning. The following patch fixes this problem.
How to reproduce:
# dd if=/dev/zero of=/mnt/mp1/hoge bs=1 count=0 seek=
4402345721856
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.
000221428 s, 0.0 kB/s
# tail -n 1 /var/log/messages
Nov 25 15:10:27 test kernel: EXT4-fs warning (device sda8): ext4_block_to_path:345: block
1074791436 > max in inode 12
Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Yongqiang Yang [Mon, 11 Apr 2011 02:06:07 +0000 (22:06 -0400)]
ext4: allow an active handle to be started when freezing
ext4_journal_start_sb() should not prevent an active handle from being
started due to s_frozen. Otherwise, deadlock is easy to happen, below
is a situation.
================================================
freeze | truncate
================================================
| ext4_ext_truncate()
freeze_super() | starts a handle
sets s_frozen |
| ext4_ext_truncate()
| holds i_data_sem
ext4_freeze() |
waits for updates |
| ext4_free_blocks()
| calls dquot_free_block()
|
| dquot_free_blocks()
| calls ext4_dirty_inode()
|
| ext4_dirty_inode()
| trys to start an active
| handle
|
| block due to s_frozen
================================================
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reported-by: Amir Goldstein <amir73il@users.sf.net>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Curt Wohlgemuth [Mon, 11 Apr 2011 02:05:31 +0000 (22:05 -0400)]
ext4: sync the directory inode in ext4_sync_parent()
ext4 has taken the stance that, in the absence of a journal,
when an fsync/fdatasync of an inode is done, the parent
directory should be sync'ed if this inode entry is new.
ext4_sync_parent(), which implements this, does indeed sync
the dirent pages for parent directories, but it does not
sync the directory *inode*. This patch fixes this.
Also now return error status from ext4_sync_parent().
I tested this using a power fail test, which panics a
machine running a file server getting requests from a
client. Without this patch, on about every other test run,
the server is missing many, many files that had been synced.
With this patch, on > 6 runs, I see zero files being lost.
Google-Bug-Id:
4179519
Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Steve Glendinning [Mon, 11 Apr 2011 01:59:27 +0000 (18:59 -0700)]
net: Add support for SMSC LAN9530, LAN9730 and LAN89530
This patch adds support for SMSC's LAN9530, LAN9730 and LAN89530 USB
ethernet controllers to the existing smsc95xx driver by adding
their new USB VID/PID pairs.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 10 Apr 2011 16:56:10 +0000 (09:56 -0700)]
Merge branch 'for-linus' of git://git./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 - Don't query connections for widgets have no connections
ALSA: HDA: Fix single internal mic on ALC275 (Sony Vaio VPCSB1C5E)
ALSA: hda - HDMI: Fix MCP7x audio infoframe checksums
ALSA: usb-audio: define another USB ID for a buggy USB MIDI cable
ALSA: HDA: Fix dock mic for Lenovo X220-tablet
ASoC: format_register_str: Don't clip register values
ASoC: PXA: Fix oops in __pxa2xx_pcm_prepare
ASoC: zylonite: set .codec_dai_name in initializer
J. Bruce Fields [Mon, 28 Mar 2011 07:15:09 +0000 (15:15 +0800)]
nfsd4: fix oops on lock failure
Lock stateid's can have access_bmap 0 if they were only partially
initialized (due to a failed lock request); handle that case in
free_generic_stateid.
------------[ cut here ]------------
kernel BUG at fs/nfsd/nfs4state.c:380!
invalid opcode: 0000 [#1] SMP
last sysfs file: /sys/kernel/mm/ksm/run
Modules linked in: nfs fscache md4 nls_utf8 cifs ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat bridge stp llc nfsd lockd nfs_acl auth_rpcgss sunrpc ipv6 ppdev parport_pc parport pcnet32 mii pcspkr microcode i2c_piix4 BusLogic floppy [last unloaded: mperf]
Pid: 1468, comm: nfsd Not tainted 2.6.38+ #120 VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform
EIP: 0060:[<
e24f180d>] EFLAGS:
00010297 CPU: 0
EIP is at nfs4_access_to_omode+0x1c/0x29 [nfsd]
EAX:
ffffffff EBX:
dd758120 ECX:
00000000 EDX:
00000004
ESI:
dd758120 EDI:
ddfe657c EBP:
dd54dde0 ESP:
dd54dde0
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process nfsd (pid: 1468, ti=
dd54c000 task=
ddc92580 task.ti=
dd54c000)
Stack:
dd54ddf0 e24f19ca 00000000 ddfe6560 dd54de08 e24f1a5d dd758130 deee3a20
ddfe6560 31270000 dd54df1c e24f52fd 0000000f dd758090 e2505dd0 0be304cf
dbb51d68 0000000e ddfe657c ddcd8020 dd758130 dd758128 dd7580d8 dd54de68
Call Trace:
[<
e24f19ca>] free_generic_stateid+0x1c/0x3e [nfsd]
[<
e24f1a5d>] release_lockowner+0x71/0x8a [nfsd]
[<
e24f52fd>] nfsd4_lock+0x617/0x66c [nfsd]
[<
e24e57b6>] ? nfsd_setuser+0x199/0x1bb [nfsd]
[<
e24e056c>] ? nfsd_setuser_and_check_port+0x65/0x81 [nfsd]
[<
c07a0052>] ? _cond_resched+0x8/0x1c
[<
c04ca61f>] ? slab_pre_alloc_hook.clone.33+0x23/0x27
[<
c04cac01>] ? kmem_cache_alloc+0x1a/0xd2
[<
c04835a0>] ? __call_rcu+0xd7/0xdd
[<
e24e0dfb>] ? fh_verify+0x401/0x452 [nfsd]
[<
e24f0b61>] ? nfsd4_encode_operation+0x52/0x117 [nfsd]
[<
e24ea0d7>] ? nfsd4_putfh+0x33/0x3b [nfsd]
[<
e24f4ce6>] ? nfsd4_delegreturn+0xd4/0xd4 [nfsd]
[<
e24ea2c9>] nfsd4_proc_compound+0x1ea/0x33e [nfsd]
[<
e24de6ee>] nfsd_dispatch+0xd1/0x1a5 [nfsd]
[<
e1d6e1c7>] svc_process_common+0x282/0x46f [sunrpc]
[<
e1d6e578>] svc_process+0xdc/0xfa [sunrpc]
[<
e24de0fa>] nfsd+0xd6/0x115 [nfsd]
[<
e24de024>] ? nfsd_shutdown+0x24/0x24 [nfsd]
[<
c0454322>] kthread+0x62/0x67
[<
c04542c0>] ? kthread_worker_fn+0x114/0x114
[<
c07a6ebe>] kernel_thread_helper+0x6/0x10
Code: eb 05 b8 00 00 27 4f 8d 65 f4 5b 5e 5f 5d c3 83 e0 03 55 83 f8 02 89 e5 74 17 83 f8 03 74 05 48 75 09 eb 09 b8 02 00 00 00 eb 0b <0f> 0b 31 c0 eb 05 b8 01 00 00 00 5d c3 55 89 e5 57 56 89 d6 8d
EIP: [<
e24f180d>] nfs4_access_to_omode+0x1c/0x29 [nfsd] SS:ESP 0068:
dd54dde0
---[ end trace
2b0bf6c6557cb284 ]---
The trace route is:
-> nfsd4_lock()
-> if (lock->lk_is_new) {
-> alloc_init_lock_stateid()
3739: stp->st_access_bmap = 0;
->if (status && lock->lk_is_new && lock_sop)
-> release_lockowner()
-> free_generic_stateid()
-> nfs4_access_bmap_to_omode()
-> nfs4_access_to_omode()
380: BUG(); *****
This problem was introduced by
0997b173609b9229ece28941c118a2a9b278796e.
Reported-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Tested-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Linus Torvalds [Sat, 9 Apr 2011 20:23:50 +0000 (13:23 -0700)]
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6:
mtd: atmel_nand: use CPU I/O when buffer is in vmalloc(ed) region
mtd: atmel_nand: modify test case for using DMA operations
mtd: atmel_nand: fix support for CPUs that do not support DMA access
mtd: atmel_nand: trivial: change DMA usage information trace
mtd: mtdswap: fix printk format warning
Takashi Iwai [Sat, 9 Apr 2011 08:05:53 +0000 (10:05 +0200)]
Merge branch 'fix/hda' into for-linus
Takashi Iwai [Sat, 9 Apr 2011 08:05:30 +0000 (10:05 +0200)]
Merge branch 'fix/asoc' into for-linus
Linus Torvalds [Fri, 8 Apr 2011 18:47:35 +0000 (11:47 -0700)]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
NFS: Change initial mount authflavor only when server returns NFS4ERR_WRONGSEC
NFS: Fix a signed vs. unsigned secinfo bug
Revert "net/sunrpc: Use static const char arrays"
Randy Dunlap [Fri, 8 Apr 2011 17:53:46 +0000 (10:53 -0700)]
signal.c: fix erroneous syscall kernel-doc
Fix erroneous syscall kernel-doc comments in kernel/signal.c.
Reported-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 8 Apr 2011 14:36:14 +0000 (07:36 -0700)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] compile fix for latest binutils
[S390] cio: prevent purging of CCW devices in the online state
[S390] qdio: fix init sequence
[S390] Fix parameter passing for smp_switch_to_cpu()
[S390] oprofile s390: prevent stack corruption
Linus Torvalds [Fri, 8 Apr 2011 14:35:17 +0000 (07:35 -0700)]
Merge branch 'for_linus' of git://git./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: Don't write quota info in dquot_commit()
ext3: Fix writepage credits computation for ordered mode
Christoph Hellwig [Wed, 30 Mar 2011 11:05:09 +0000 (11:05 +0000)]
xfs: use proper interfaces for on-stack plugging
Add proper blk_start_plug/blk_finish_plug pairs for the two places where
we issue buffer I/O, and remove the blk_flush_plug in xfs_buf_lock and
xfs_buf_iowait, given that context switches already flush the per-process
plugging lists.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
Christoph Hellwig [Sat, 2 Apr 2011 18:13:40 +0000 (18:13 +0000)]
xfs: fix xfs_debug warnings
For a CONFIG_XFS_DEBUG=n build gcc complains about statements with no
effect in xfs_debug:
fs/xfs/quota/xfs_qm_syscalls.c: In function 'xfs_qm_scall_trunc_qfiles':
fs/xfs/quota/xfs_qm_syscalls.c:291:3: warning: statement with no effect
The reason for that is that the various new xfs message functions have a
return value which is never used, and in case of the non-debug build
xfs_debug the macro evaluates to a plain 0 which produces the above
warnings. This can be fixed by turning xfs_debug into an inline function
instead of a macro, but in addition to that I've also changed all the
message helpers to return void as we never use their return values.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
Christoph Hellwig [Mon, 4 Apr 2011 12:55:44 +0000 (12:55 +0000)]
xfs: fix variable set but not used warnings
GCC 4.6 now warnings about variables set but not used. Fix the trivially
fixable warnings of this sort.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
Yevgeny Petrilin [Wed, 6 Apr 2011 23:25:45 +0000 (23:25 +0000)]
mlx4_en: Restoring RX buffer pointer in case of failure
If not done, second attempt to open the RX ring would cause memory corruption.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yevgeny Petrilin [Wed, 6 Apr 2011 23:24:42 +0000 (23:24 +0000)]
mlx4: Sensing link type at device initialization
When bringing the port up, performing a SENSE_PORT command
To try and check to which physical link type (IB or Ethernet) the physical
port is connected.
In case there is no valid link partner, the port will come up as its
supported default.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: convert log tail checking to a warning
On the Power platform, the log tail debug checks fire excessively
causing the system to panic early in testing. The debug checks are
known to be racy, though on x86_64 there is no evidence that they
trigger at all.
We want to keep the checks active on debug systems to alert us to
problems with log space accounting, but we need to reduce the impact
of a racy check on testing on the Power platform.
As a result, convert the ASSERT conditions to warnings, and
allow them to fire only once per filesystem mount. This will prevent
false positives from interfering with testing, whilst still
providing us with the indication that they may be a problem with log
space accounting should that occur.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: catch bad block numbers freeing extents.
A fuzzed filesystem crashed a kernel when freeing an extent with a
block number beyond the end of the filesystem. Convert all the debug
asserts in xfs_free_extent() to active checks so that we catch bad
extents and return that the filesytsem is corrupted rather than
crashing.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: push the AIL from memory reclaim and periodic sync
When we are short on memory, we want to expedite the cleaning of
dirty objects. Hence when we run short on memory, we need to kick
the AIL flushing into action to clean as many dirty objects as
quickly as possible. To implement this, sample the lsn of the log
item at the head of the AIL and use that as the push target for the
AIL flush.
Further, we keep items in the AIL that are dirty that are not
tracked any other way, so we can get objects sitting in the AIL that
don't get written back until the AIL is pushed. Hence to get the
filesystem to the idle state, we might need to push the AIL to flush
out any remaining dirty objects sitting in the AIL. This requires
the same push mechanism as the reclaim push.
This patch also renames xfs_trans_ail_tail() to xfs_ail_min_lsn() to
match the new xfs_ail_max_lsn() function introduced in this patch.
Similarly for xfs_trans_ail_push -> xfs_ail_push.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: clean up code layout in xfs_trans_ail.c
This patch rearranges the location of functions in xfs_trans_ail.c
to remove the need for forward declarations of those functions in
preparation for adding new functions without the need for forward
declarations.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: convert the xfsaild threads to a workqueue
Similar to the xfssyncd, the per-filesystem xfsaild threads can be
converted to a global workqueue and run periodically by delayed
works. This makes sense for the AIL pushing because it uses
variable timeouts depending on the work that needs to be done.
By removing the xfsaild, we simplify the AIL pushing code and
remove the need to spread the code to implement the threading
and pushing across multiple files.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: introduce background inode reclaim work
Background inode reclaim needs to run more frequently that the XFS
syncd work is run as 30s is too long between optimal reclaim runs.
Add a new periodic work item to the xfs syncd workqueue to run a
fast, non-blocking inode reclaim scan.
Background inode reclaim is kicked by the act of marking inodes for
reclaim. When an AG is first marked as having reclaimable inodes,
the background reclaim work is kicked. It will continue to run
periodically untill it detects that there are no more reclaimable
inodes. It will be kicked again when the first inode is queued for
reclaim.
To ensure shrinker based inode reclaim throttles to the inode
cleaning and reclaim rate but still reclaim inodes efficiently, make it kick the
background inode reclaim so that when we are low on memory we are
trying to reclaim inodes as efficiently as possible. This kick shoul
d not be necessary, but it will protect against failures to kick the
background reclaim when inodes are first dirtied.
To provide the rate throttling, make the shrinker pass do
synchronous inode reclaim so that it blocks on inodes under IO. This
means that the shrinker will reclaim inodes rather than just
skipping over them, but it does not adversely affect the rate of
reclaim because most dirty inodes are already under IO due to the
background reclaim work the shrinker kicked.
These two modifications solve one of the two OOM killer invocations
Chris Mason reported recently when running a stress testing script.
The particular workload trigger for the OOM killer invocation is
where there are more threads than CPUs all unlinking files in an
extremely memory constrained environment. Unlike other solutions,
this one does not have a performance impact on performance when
memory is not constrained or the number of concurrent threads
operating is <= to the number of CPUs.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: convert ENOSPC inode flushing to use new syncd workqueue
On of the problems with the current inode flush at ENOSPC is that we
queue a flush per ENOSPC event, regardless of how many are already
queued. Thi can result in hundreds of queued flushes, most of
which simply burn CPU scanned and do no real work. This simply slows
down allocation at ENOSPC.
We really only need one active flush at a time, and we can easily
implement that via the new xfs_syncd_wq. All we need to do is queue
a flush if one is not already active, then block waiting for the
currently active flush to complete. The result is that we only ever
have a single ENOSPC inode flush active at a time and this greatly
reduces the overhead of ENOSPC processing.
On my 2p test machine, this results in tests exercising ENOSPC
conditions running significantly faster - 042 halves execution time,
083 drops from 60s to 5s, etc - while not introducing test
regressions.
This allows us to remove the old xfssyncd threads and infrastructure
as they are no longer used.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: introduce a xfssyncd workqueue
All of the work xfssyncd does is background functionality. There is
no need for a thread per filesystem to do this work - it can al be
managed by a global workqueue now they manage concurrency
effectively.
Introduce a new gglobal xfssyncd workqueue, and convert the periodic
work to use this new functionality. To do this, use a delayed work
construct to schedule the next running of the periodic sync work
for the filesystem. When the sync work is complete, queue a new
delayed work for the next running of the sync work.
For laptop mode, we wait on completion for the sync works, so ensure
that the sync work queuing interface can flush and wait for work to
complete to enable the work queue infrastructure to replace the
current sequence number and wakeup that is used.
Because the sync work does non-trivial amounts of work, mark the
new work queue as CPU intensive.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Dave Chinner [Fri, 8 Apr 2011 02:45:07 +0000 (12:45 +1000)]
xfs: fix extent format buffer allocation size
When formatting an inode item, we have to allocate a separate buffer
to hold extents when there are delayed allocation extents on the
inode and it is in extent format. The allocation size is derived
from the in-core data fork representation, which accounts for
delayed allocation extents, while the on-disk representation does
not contain any delalloc extents.
As a result of this mismatch, the allocated buffer can be far larger
than needed to hold the real extent list which, due to the fact the
inode is in extent format, is limited to the size of the literal
area of the inode. However, we can have thousands of delalloc
extents, resulting in an allocation size orders of magnitude larger
than is needed to hold all the real extents.
Fix this by limiting the size of the buffer being allocated to the
size of the literal area of the inodes in the filesystem (i.e. the
maximum size an inode fork can grow to).
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Alex Elder <aelder@sgi.com>
OGAWA Hirofumi [Thu, 7 Apr 2011 21:04:08 +0000 (14:04 -0700)]
ipv4: Fix "Set rt->rt_iif more sanely on output routes."
Commit
1018b5c01636c7c6bda31a719bda34fc631db29a ("Set rt->rt_iif more
sanely on output routes.") breaks rt_is_{output,input}_route.
This became the cause to return "IP_PKTINFO's ->ipi_ifindex == 0".
To fix it, this does:
1) Add "int rt_route_iif;" to struct rtable
2) For input routes, always set rt_route_iif to same value as rt_iif
3) For output routes, always set rt_route_iif to zero. Set rt_iif
as it is done currently.
4) Change rt_is_{output,input}_route() to test rt_route_iif
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 7 Apr 2011 20:34:41 +0000 (13:34 -0700)]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
watchdog: mpc8xxx_wdt: fix build
Peter Korsgaard [Wed, 30 Mar 2011 13:48:22 +0000 (15:48 +0200)]
watchdog: mpc8xxx_wdt: fix build
Since
1c48a5c93da6313 (dt: Eliminate of_platform_{,un}register_driver)
mpc8xxx_wdt no longer builds as it tries to refer to a 'match' variable
rather than ofdev->dev.of_match that it checks just before.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Bryan Schumaker [Thu, 7 Apr 2011 20:02:20 +0000 (16:02 -0400)]
NFS: Change initial mount authflavor only when server returns NFS4ERR_WRONGSEC
When attempting an initial mount, we should only attempt other
authflavors if AUTH_UNIX receives a NFS4ERR_WRONGSEC error.
This allows other errors to be passed back to userspace programs.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Linus Torvalds [Thu, 7 Apr 2011 19:49:17 +0000 (12:49 -0700)]
Merge branch 'fbdev-fixes-for-linus' of git://git./linux/kernel/git/lethal/fbdev-2.6
* 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6:
efifb: Add override for 11" Macbook Air 3,1
efifb: Support overriding fields FW tells us with the DMI data.
fb: Reduce priority of resource conflict message
savagefb: Remove obsolete else clause in savage_setup_i2c_bus
savagefb: Set up I2C based on chip family instead of card id
savagefb: Replace magic register address with define
drivers/video/bfin-lq035q1-fb.c: introduce missing kfree
video: s3c-fb: fix checkpatch errors and warning
efifb: support AMD Radeon HD 6490
s3fb: fix Virge/GX2
fbcon: Remove unused 'display *p' variable from fb_flashcursor()
fbdev: sh_mobile_lcdcfb: fix module lock acquisition
fbdev: sh_mobile_lcdcfb: add blanking support
viafb: initialize margins correct
viafb: refresh rate bug collection
sh: mach-ap325rxa: move backlight control code
sh: mach-ecovec24: support for main lcd backlight
Linus Torvalds [Thu, 7 Apr 2011 19:49:01 +0000 (12:49 -0700)]
Merge branch 'rmobile-fixes-for-linus' of git://git./linux/kernel/git/lethal/sh-2.6
* 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
ARM: arch-shmobile: only run FSI init on respective boards
ARM: arch-shmobile: only run HDMI init on respective boards
ARM: mach-shmobile: Correctly check for CONFIG_MACH_MACKEREL
Linus Torvalds [Thu, 7 Apr 2011 19:48:45 +0000 (12:48 -0700)]
Merge branch 'sh-fixes-for-linus' of git://git./linux/kernel/git/lethal/sh-2.6
* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
sh: select ARCH_NO_SYSDEV_OPS.
sh: fix build error in board-sh7757lcr.c
sh: landisk: Remove whitespace
sh: landisk: Remove mv_nr_irqs
sh: sh-sci: Fix double initialization by serial_console_setup
serial: sh-sci: prevent setup of uninitialized serial console
dma: shdma: add checking the DMAOR_AE in sh_dmae_err
Linus Torvalds [Thu, 7 Apr 2011 19:12:58 +0000 (12:12 -0700)]
Merge branches 'x86-fixes-for-linus', 'sched-fixes-for-linus', 'timers-fixes-for-linus', 'irq-fixes-for-linus' and 'perf-fixes-for-linus' of git://git./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:
x86-32, fpu: Fix FPU exception handling on non-SSE systems
x86, hibernate: Initialize mmu_cr4_features during boot
x86-32, NUMA: Fix ACPI NUMA init broken by recent x86-64 change
x86: visws: Fixup irq overhaul fallout
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: Clean up rebalance_domains() load-balance interval calculation
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86/mrst/vrtc: Fix boot crash in mrst_rtc_init()
rtc, x86/mrst/vrtc: Fix boot crash in rtc_read_alarm()
* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
genirq: Fix cpumask leak in __setup_irq()
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf probe: Fix listing incorrect line number with inline function
perf probe: Fix to find recursively inlined function
perf probe: Fix multiple --vars options behavior
perf probe: Fix to remove redundant close
perf probe: Fix to ensure function declared file
Linus Torvalds [Thu, 7 Apr 2011 18:36:44 +0000 (11:36 -0700)]
Merge branch 'staging-linus' of git://git./linux/kernel/git/gregkh/staging-2.6
* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (28 commits)
staging: usbip: bugfix for isochronous packets and optimization
staging: usbip: bugfix add number of packets for isochronous frames
staging: usbip: bugfixes related to kthread conversion
staging: usbip: fix shutdown problems.
staging: hv: Fix GARP not sent after Quick Migration
staging: IIO: IMU: ADIS16400: Avoid using printk facility directly
staging: IIO: IMU: ADIS16400: Fix product ID check, skip embedded revision number
staging: IIO: IMU: ADIS16400: Make sure only enabled scan_elements are pushed into the ring
staging: IIO: IMU: ADIS16400: Fix addresses of GYRO and ACCEL calibration offset
staging: IIO: IMU: ADIS16400: Add delay after self test
staging: IIO: IMU: ADIS16400: Fix up SPI messages cs_change behavior
staging/rtl81*: build as loadable modules only
staging: brcm80211: removed 'is_amsdu causing toss' log spam
staging: brcm80211: fix for 'Short CCK' log spam
staging: brcm80211: fix for 'AC_BE txop..' logs spammed problem
staging: memrar: remove driver from tree
staging: sep: remove last memrar remnants
staging: fix hv_mouse build, needs delay.h
staging: fix olpc_dcon build errors
staging: sm7xx: fixed defines
...
Fix up trivial conflict in drivers/staging/memrar/memrar_handler.c
(deleted vs trivial spelling fixes)
Linus Torvalds [Thu, 7 Apr 2011 18:33:04 +0000 (11:33 -0700)]
Merge branch 'kvm-updates/2.6.39' of git://git./virt/kvm/kvm
* 'kvm-updates/2.6.39' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: move and fix substitue search for missing CPUID entries
KVM: fix XSAVE bit scanning
KVM: Enable async page fault processing
KVM: fix crash on irqfd deassign
Linus Torvalds [Thu, 7 Apr 2011 18:31:03 +0000 (11:31 -0700)]
Merge branch 'for-linus' of git://git.infradead.org/ubifs-2.6
* 'for-linus' of git://git.infradead.org/ubifs-2.6:
UBI: do not select KALLSYMS_ALL
UBI: do not compare array with NULL
UBI: check if we are in RO mode in the erase routine
UBIFS: fix debugging failure in dbg_check_space_info
UBIFS: fix error path in dbg_debugfs_init_fs
UBIFS: unify error path dbg_debugfs_init_fs
UBIFS: do not select KALLSYMS_ALL
UBIFS: fix assertion warnings
UBIFS: fix oops on error path in read_pnode
UBIFS: do not read flash unnecessarily
Vasily Khoruzhick [Wed, 6 Apr 2011 14:49:15 +0000 (17:49 +0300)]
spi: Fix race condition in stop_queue()
There's a race condition in stop_queue() in some drivers -
if drv_data->queue is empty, but drv_data->busy is still set
(or opposite situation) stop_queue will return -EBUSY.
So fix loop condition to check that both drv_data->queue is empty
and drv_data->busy is not set.
This patch affects following drivers:
pxa2xx_spi
spi_bfin5xx
amba-pl022
dw_spi
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Grant Likely [Thu, 7 Apr 2011 18:15:50 +0000 (11:15 -0700)]
Merge commit 'v2.6.39-rc2' into spi/merge
Linus Torvalds [Thu, 7 Apr 2011 18:14:49 +0000 (11:14 -0700)]
Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6
* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6:
Fix common misspellings
Linus Torvalds [Thu, 7 Apr 2011 16:42:13 +0000 (09:42 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: Add support for CH Pro Throttle
HID: hid-magicmouse: Increase evdev buffer size
HID: add FF support for Logitech G25/G27
HID: roccat: Add support for wireless variant of Pyra
HID: Fix typo Keyoutch -> Keytouch
HID: add support for Skycable 0x3f07 wireless presenter
Youquan Song [Wed, 6 Apr 2011 06:35:12 +0000 (14:35 +0800)]
fix build fail for hv_mouse indefine udelay
Fix build failure issue for hv_mouse
When build 2.6.39-rc1 kernel, it will be blocked at build hv_mouse.
drivers/staging/hv/hv_mouse.c: In function ‘ReleaseInputDevice’:
drivers/staging/hv/hv_mouse.c:293: error: implicit declaration of function ‘udelay’
Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 7 Apr 2011 14:35:50 +0000 (07:35 -0700)]
mm: avoid wrapping vm_pgoff in mremap()
The normal mmap paths all avoid creating a mapping where the pgoff
inside the mapping could wrap around due to overflow. However, an
expanding mremap() can take such a non-wrapping mapping and make it
bigger and cause a wrapping condition.
Noticed by Robert Swiecki when running a system call fuzzer, where it
caused a BUG_ON() due to terminally confusing the vma_prio_tree code. A
vma dumping patch by Hugh then pinpointed the crazy wrapped case.
Reported-and-tested-by: Robert Swiecki <robert@swiecki.net>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Takashi Iwai [Thu, 7 Apr 2011 12:55:57 +0000 (14:55 +0200)]
ALSA: hda - Don't query connections for widgets have no connections
Fixes the kernel warnings with IDT codecs like
hda_codec: connection list not available for 0x1e
Signed-off-by: Takashi Iwai <tiwai@suse.de>
David Henningsson [Thu, 7 Apr 2011 09:43:00 +0000 (11:43 +0200)]
ALSA: HDA: Fix single internal mic on ALC275 (Sony Vaio VPCSB1C5E)
In cases where there is only one internal mic connected to ADC 0x11,
alc275_setup_dual_adc won't handle the case, so we need to add the
ADC node to the array of candidates.
Cc: stable@kernel.org
BugLink: http://bugs.launchpad.net/bugs/752792
Reported-by: Vincenzo Pii
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Aaron Plattner [Thu, 7 Apr 2011 00:19:04 +0000 (17:19 -0700)]
ALSA: hda - HDMI: Fix MCP7x audio infoframe checksums
The MCP7x hardware computes the audio infoframe channel count
automatically, but requires the audio driver to set the audio
infoframe checksum manually via the Nv_VERB_SET_Info_Frame_Checksum
control verb.
When audio starts playing, nvhdmi_8ch_7x_pcm_prepare sets the checksum
to (0x71 - chan - chanmask). For example, for 2ch audio, chan == 1
and chanmask == 0 so the checksum is set to 0x70. When audio playback
finishes and the device is closed, nvhdmi_8ch_7x_pcm_close resets the
channel formats, causing the channel count to revert to 8ch. Since
the checksum is not reset, the hardware starts generating audio
infoframes with invalid checksums. This causes some displays to blank
the video.
Fix this by updating the checksum and channel mask when the device is
closed and also when it is first initialized. In addition, make sure
that the channel mask is appropriate for an 8ch infoframe by setting
it to 0x13 (FL FR LFE FC RL RR RLC RRC).
Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Feng Tang [Thu, 7 Apr 2011 01:39:49 +0000 (09:39 +0800)]
x86/mrst/vrtc: Fix boot crash in mrst_rtc_init()
The sfi_mrtc_array[] only gets initialized when the sfi mrtc
table is parsed, so the vrtc_paddr should be initalized after it
too.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1302140389-27603-1-git-send-email-feng.tang@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Feng Tang [Thu, 7 Apr 2011 01:39:44 +0000 (09:39 +0800)]
rtc, x86/mrst/vrtc: Fix boot crash in rtc_read_alarm()
Commit
f44f7f96a20 ("RTC: Initialize kernel state from RTC") caused a
boot regression on the MRST platform.
The reason is that rtc_device_register() calls rtc_read_alarm() after
that change, which function does not have all driver data set up yet.
The rtc-mrst driver needs to call dev_set_drvdata() before rtc_device_register()
gets called.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Acked-by: John Stultz <john.stultz@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1302140384-27571-1-git-send-email-feng.tang@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Hans Rosenfeld [Wed, 6 Apr 2011 16:06:43 +0000 (18:06 +0200)]
x86-32, fpu: Fix FPU exception handling on non-SSE systems
On 32bit systems without SSE (that is, they use FSAVE/FRSTOR for FPU
context switches), FPU exceptions in user mode cause Oopses, BUGs,
recursive faults and other nasty things:
fpu exception: 0000 [#1]
last sysfs file: /sys/power/state
Modules linked in: psmouse evdev pcspkr serio_raw [last unloaded: scsi_wait_scan]
Pid: 1638, comm: fxsave-32-excep Not tainted
2.6.35-07798-g58a992b-dirty #633 VP3-596B-DD/VT82C597
EIP: 0060:[<
c1003527>] EFLAGS:
00010202 CPU: 0
EIP is at math_error+0x1b4/0x1c8
EAX:
00000003 EBX:
cf9be7e0 ECX:
00000000 EDX:
cf9c5c00
ESI:
cf9d9fb4 EDI:
c1372db3 EBP:
00000010 ESP:
cf9d9f1c
DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
Process fxsave-32-excep (pid: 1638, ti=
cf9d8000 task=
cf9be7e0 task.ti=
cf9d8000)
Stack:
00000000 00000301 00000004 00000000 00000000 cf9d3000 cf9da8f0 00000001
<0>
00000004 cf9b6b60 c1019a6b c1019a79 00000020 00000242 000001b6 cf9c5380
<0>
cf806b40 cf791880 00000000 00000282 00000282 c108a213 00000020 cf9c5380
Call Trace:
[<
c1019a6b>] ? need_resched+0x11/0x1a
[<
c1019a79>] ? should_resched+0x5/0x1f
[<
c108a213>] ? do_sys_open+0xbd/0xc7
[<
c108a213>] ? do_sys_open+0xbd/0xc7
[<
c100353b>] ? do_coprocessor_error+0x0/0x11
[<
c12d5965>] ? error_code+0x65/0x70
Code: a8 20 74 30 c7 44 24 0c 06 00 03 00 8d 54 24 04 89 d9 b8 08 00 00 00 e8 9b 6d 02 00 eb 16 8b 93 5c 02 00 00 eb 05 e9 04 ff ff ff <9b> dd 32 9b e9 16 ff ff ff 81 c4 84 00 00 00 5b 5e 5f 5d c3 c6
EIP: [<
c1003527>] math_error+0x1b4/0x1c8 SS:ESP 0068:
cf9d9f1c
This usually continues in slight variations until the system is reset.
This bug was introduced by commit
58a992b9cbaf449aeebd3575c3695a9eb5d95b5e:
x86-32, fpu: Rewrite fpu_save_init()
Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com>
Link: http://lkml.kernel.org/r/1302106003-366952-1-git-send-email-hans.rosenfeld@amd.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Arjan Mels [Tue, 5 Apr 2011 18:26:59 +0000 (20:26 +0200)]
staging: usbip: bugfix for isochronous packets and optimization
For isochronous packets the actual_length is the sum of the actual
length of each of the packets, however between the packets might be
padding, so it is not sufficient to just send the first actual_length
bytes of the buffer. To fix this and simultanesouly optimize the
bandwidth the content of the isochronous packets are send without the
padding, the padding is restored on the receiving end.
Signed-off-by: Arjan Mels <arjan.mels@gmx.net>
Cc: Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>
Cc: Max Vozeler <max@vozeler.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arjan Mels [Tue, 5 Apr 2011 18:26:38 +0000 (20:26 +0200)]
staging: usbip: bugfix add number of packets for isochronous frames
The number_of_packets was not transmitted for RET_SUBMIT packets. The
linux client used the stored number_of_packet from the submitted
request. The windows userland client does not do this however and needs
to know the number_of_packets to determine the size of the transmission.
Signed-off-by: Arjan Mels <arjan.mels@gmx.net>
Cc: Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>
Cc: Max Vozeler <max@vozeler.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arjan Mels [Tue, 5 Apr 2011 18:26:11 +0000 (20:26 +0200)]
staging: usbip: bugfixes related to kthread conversion
When doing a usb port reset do a queued reset instead to prevent a
deadlock: the reset will cause the driver to unbind, causing the
usb_driver_lock_for_reset to stall.
Signed-off-by: Arjan Mels <arjan.mels@gmx.net>
Cc: Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>
Cc: Max Vozeler <max@vozeler.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arjan Mels [Tue, 5 Apr 2011 18:24:56 +0000 (20:24 +0200)]
staging: usbip: fix shutdown problems.
When shuting down the tcp_rx and tcp_tx threads first check if they are
not closed already (maybe because an error caused them to return).
Signed-off-by: Arjan Mels <arjan.mels@gmx.net>
Cc: Takahiro Hirofuchi <hirofuchi@users.sourceforge.net>
Cc: Max Vozeler <max@vozeler.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Haiyang Zhang [Wed, 6 Apr 2011 22:18:00 +0000 (15:18 -0700)]
staging: hv: Fix GARP not sent after Quick Migration
After Quick Migration, the network is not immediately operational in the
current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, I added
another netif_notify_peers() into a scheduled work, otherwise GARP packet will
not be sent after quick migration, and cause network disconnection.
Thanks to Mike Surcouf <mike@surcouf.co.uk> for reporting the bug and
testing the patch.
Reported-by: Mike Surcouf <mike@surcouf.co.uk>
Tested-by: Mike Surcouf <mike@surcouf.co.uk>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ian Campbell [Sun, 3 Apr 2011 23:12:23 +0000 (23:12 +0000)]
MAINTAINERS: add entry for Xen network backend
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Padmanabh Ratnakar [Sun, 3 Apr 2011 01:54:39 +0000 (01:54 +0000)]
be2net: Fix suspend/resume operation
eq_next_idx is not getting reset to zero during suspend.
This causes resume to fail. Added the fix.
Signed-off-by: Sarveswara Rao Mygapula <sarveswararao.mygapula@emulex.com>
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Padmanabh Ratnakar [Sun, 3 Apr 2011 01:54:11 +0000 (01:54 +0000)]
be2net: Rename some struct members for clarity
Renamed msix_vec_idx to eq_idx in be_eq_obj struct.
Renamed msix_vec_next_idx to eq_next_idx in be_adapter structure.
These members are used in INTX mode also.
Signed-off-by: Sarveswara Rao Mygapula <sarveswararao.mygapula@emulex.com>
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ulrich Weber [Wed, 6 Apr 2011 21:04:49 +0000 (14:04 -0700)]
pppoe: drop PPPOX_ZOMBIEs in pppoe_flush_dev
otherwise we loop forever if a PPPoE socket was set
to PPPOX_ZOMBIE state by a PADT message when the
ethernet device is going down afterwards.
Signed-off-by: Ulrich Weber <uweber@astaro.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 6 Apr 2011 20:34:15 +0000 (13:34 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6
Peter Korsgaard [Tue, 5 Apr 2011 03:03:56 +0000 (03:03 +0000)]
dsa/mv88e6131: add support for mv88e6085 switch
The mv88e6085 is identical to the mv88e6095, except that all ports are
10/100 Mb/s, so use the existing setup code except for the cpu/dsa speed
selection in _setup_port().
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bryan Schumaker [Wed, 6 Apr 2011 18:33:28 +0000 (14:33 -0400)]
NFS: Fix a signed vs. unsigned secinfo bug
rpc_authflavor_t is cast from an unsigned int, but the
initial code tried to use it as a signed int. I fix
this by passing an rpc_authflavor_t pointer around, and
returning signed integers from functions.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
H. Peter Anvin [Wed, 6 Apr 2011 20:10:02 +0000 (13:10 -0700)]
x86, hibernate: Initialize mmu_cr4_features during boot
Restore the initialization of mmu_cr4_features during boot, which was
removed without comment in checkin
e5f15b45ddf3afa2bbbb10c7ea34fb32b6de0a0e
x86: Cleanup highmap after brk is concluded
thereby breaking resume from hibernate. This restores previous
functionality in approximately the same place, and corrects the
reading of %cr4 on pre-CPUID hardware (%cr4 exists if and only if
CPUID is supported.)
However, part of the problem is that the hibernate suspend/resume
sequence should manage the save/restore of %cr4 explicitly.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
201104020154.57136.rjw@sisk.pl>
Neil Horman [Wed, 6 Apr 2011 20:07:09 +0000 (13:07 -0700)]
ipv6: Enable RFS sk_rxhash tracking for ipv6 sockets (v2)
properly record sk_rxhash in ipv6 sockets (v2)
Noticed while working on another project that flows to sockets which I had open
on a test systems weren't getting steered properly when I had RFS enabled.
Looking more closely I found that:
1) The affected sockets were all ipv6
2) They weren't getting steered because sk->sk_rxhash was never set from the
incomming skbs on that socket.
This was occuring because there are several points in the IPv4 tcp and udp code
which save the rxhash value when a new connection is established. Those calls
to sock_rps_save_rxhash were never added to the corresponding ipv6 code paths.
This patch adds those calls. Tested by myself to properly enable RFS
functionalty on ipv6.
Change notes:
v2:
Filtered UDP to only arm RFS on bound sockets (Eric Dumazet)
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ajit Khaparde [Wed, 6 Apr 2011 05:53:13 +0000 (05:53 +0000)]
be2net: Fix a potential crash during shutdown.
adapter could remain uninitialized if probe fails for some reason.
A null pointer access could cause a crash if be_shutdown
is called after that.
Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rasesh Mody [Mon, 4 Apr 2011 08:29:59 +0000 (08:29 +0000)]
bna: Fix for handling firmware heartbeat failure
This patch contains a fix for gracefully handling firmware heartbeat
failure instead of forcing panic.
Signed-off-by: Debashis Dutt <ddutt@brocade.com>
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enric Balletbo i Serra [Tue, 5 Apr 2011 07:08:41 +0000 (07:08 +0000)]
can: mcp251x: Allow pass IRQ flags through platform data.
When an interrupt occurs, the INT pin is driven low by the
MCP251x controller (falling edge) but in some cases the INT
pin can be connected to the MPU through a transistor or level
translator which inverts this signal. In this case interrupt
should be configured in rising edge.
This patch adds support to pass the IRQ flags via
mcp251x_platform_data.
Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enric Balletbo i Serra [Tue, 5 Apr 2011 06:52:49 +0000 (06:52 +0000)]
smsc911x: fix mac_lock acquision before calling smsc911x_mac_read
When SMSC911X_SAVE_MAC_ADDRESS flag is enabled the driver calls
smsc911x_mac_read and smsc911x_mac_read function without acquiring mac_lock
spinlock
This patch fixes following warning
smsc911x: Driver version 2008-10-21.
------------[ cut here ]------------
WARNING: at drivers/net/smsc911x.c:261 smsc911x_mac_read+0x24/0x220()
Modules linked in:
[<
c0060858>] (unwind_backtrace+0x0/0xe0) from [<
c009322c>] (warn_slowpath_common+0x4c/0x64)
[<
c009322c>] (warn_slowpath_common+0x4c/0x64) from [<
c009325c>] (warn_slowpath_null+0x18/0x1c)
[<
c009325c>] (warn_slowpath_null+0x18/0x1c) from [<
c0324bec>] (smsc911x_mac_read+0x24/0x220)
[<
c0324bec>] (smsc911x_mac_read+0x24/0x220) from [<
c0434788>] (smsc911x_read_mac_address+0x18/0x6c)
[<
c0434788>] (smsc911x_read_mac_address+0x18/0x6c) from [<
c0434c74>] (smsc911x_drv_probe+0x498/0x1788)
[<
c0434c74>] (smsc911x_drv_probe+0x498/0x1788) from [<
c02d3e54>] (platform_drv_probe+0x14/0x18)
[<
c02d3e54>] (platform_drv_probe+0x14/0x18) from [<
c02d2d60>] (driver_probe_device+0xc8/0x184)
[<
c02d2d60>] (driver_probe_device+0xc8/0x184) from [<
c02d2e84>] (__driver_attach+0x68/0x8c)
[<
c02d2e84>] (__driver_attach+0x68/0x8c) from [<
c02d1fc8>] (bus_for_each_dev+0x48/0x74)
[<
c02d1fc8>] (bus_for_each_dev+0x48/0x74) from [<
c02d2660>] (bus_add_driver+0x9c/0x228)
[<
c02d2660>] (bus_add_driver+0x9c/0x228) from [<
c02d3598>] (driver_register+0xa0/0x124)
[<
c02d3598>] (driver_register+0xa0/0x124) from [<
c0050668>] (do_one_initcall+0x94/0x168)
[<
c0050668>] (do_one_initcall+0x94/0x168) from [<
c0008984>] (kernel_init+0xa0/0x154)
[<
c0008984>] (kernel_init+0xa0/0x154) from [<
c005afac>] (kernel_thread_exit+0x0/0x8)
---[ end trace
2c931a35b7885770 ]---
Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Mundt [Wed, 6 Apr 2011 18:42:01 +0000 (11:42 -0700)]
sh: select ARCH_NO_SYSDEV_OPS.
Now that everything that was using these interfaces has been converted to
the syscore ops, prevent new code from using the old API.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Kuninori Morimoto [Tue, 5 Apr 2011 01:22:33 +0000 (01:22 +0000)]
ARM: arch-shmobile: only run FSI init on respective boards
If several boards are enabled in the kernel configuration,
fsi_init_pm_clock() functions from board-ap4evb.c
will run on any of them. Prevent this by calling these functions from the
.init_machine() callback instead of using device_initcall().
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Guennadi Liakhovetski [Mon, 4 Apr 2011 15:08:05 +0000 (17:08 +0200)]
ARM: arch-shmobile: only run HDMI init on respective boards
If several boards are enabled in the kernel configuration,
hdmi_init_pm_clock() functions from board-ap4evb.c and board-mackerel.c
will run on any of them. Prevent this by calling these functions from the
.init_machine() callback instead of using device_initcall().
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Magnus Damm <damm@opensource.se>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Trond Myklebust [Wed, 6 Apr 2011 17:13:32 +0000 (10:13 -0700)]
Revert "net/sunrpc: Use static const char arrays"
This reverts commit
411b5e05617593efebc06241dbc56f42150f2abe.
Olga Kornievskaia reports:
Problem: linux client mounting linux server using rc4-hmac-md5
enctype. gssd fails with create a context after receiving a reply from
the server.
Diagnose: putting printout statements in the server kernel and
kerberos libraries revealed that client and server derived different
integrity keys.
Server kernel code was at fault due the the commit
[aglo@skydive linux-pnfs]$ git show
411b5e05617593efebc06241dbc56f42150f2abe
Trond: The problem is that since it relies on virt_to_page(), you cannot
call sg_set_buf() for data in the const section.
Reported-by: Olga Kornievskaia <aglo@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org [2.6.36+]
Simon Horman [Mon, 4 Apr 2011 06:45:21 +0000 (06:45 +0000)]
ARM: mach-shmobile: Correctly check for CONFIG_MACH_MACKEREL
I made a bit of a thinko when adding Mackerel to the boards
that support zboot using MMCIF.
Reported-by: Magnus Damm <magnus.damm@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Matthew Garrett [Wed, 6 Apr 2011 17:34:59 +0000 (17:34 +0000)]
efifb: Add override for 11" Macbook Air 3,1
The 11" Macbook Air appears to claim that its stride is 1366, when it's
actually 2048. Override it.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Peter Jones [Wed, 6 Apr 2011 17:34:58 +0000 (17:34 +0000)]
efifb: Support overriding fields FW tells us with the DMI data.
Some machines apparently give us bogus linelength/stride/pitch data, so
we need to support letting the DMI table override the supplied data.
I bet you can't guess whose machines I'm talking about.
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Matthew Garrett [Mon, 4 Apr 2011 21:39:54 +0000 (21:39 +0000)]
fb: Reduce priority of resource conflict message
It's expected that efifb will conflict with a native driver, so the
handover message should be informational rather than an error.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Tormod Volden [Sun, 3 Apr 2011 12:54:06 +0000 (12:54 +0000)]
savagefb: Remove obsolete else clause in savage_setup_i2c_bus
The else clause was not needed after the cleanup in commit
b8901b091db260b0f0101d6395ce5c6016835a47
Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Tormod Volden [Sun, 3 Apr 2011 12:54:05 +0000 (12:54 +0000)]
savagefb: Set up I2C based on chip family instead of card id
In practice this means enabling I2C (for DDC2) on all prosavage cards,
like the xorg ddx does. The savage4 and savage2000 families have only
one member each, so there is no change for those.
Tested on TwisterK.
Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Tormod Volden [Sun, 3 Apr 2011 12:54:04 +0000 (12:54 +0000)]
savagefb: Replace magic register address with define
MM_SERIAL1 was already defined, but not used.
Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Julia Lawall [Fri, 1 Apr 2011 14:23:47 +0000 (14:23 +0000)]
drivers/video/bfin-lq035q1-fb.c: introduce missing kfree
Error handling code following a kmalloc should free the allocated data.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...x...+> }
(
x->f1 = E
|
(x->f1 == NULL || ...)
|
f(...,x->f1,...)
)
...>
(
return \(0\|<+...x...+>\|ptr\);
|
return@p2 ...;
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Jingoo Han [Fri, 1 Apr 2011 07:17:27 +0000 (07:17 +0000)]
video: s3c-fb: fix checkpatch errors and warning
This patch fixes the checkpatch errors listed below:
ERROR: space required before the open parenthesis '('
ERROR: need consistent spacing around '+' (ctx:WxV)
ERROR: space prohibited before that close parenthesis ')'
Also, following warning is fixed by adding 'platid' variable
which can reduce number of lines exceeding 80 characters.
WARNING: line over 80 characters
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Jiri Kosina [Wed, 6 Apr 2011 14:12:32 +0000 (07:12 -0700)]
HID: Add support for CH Pro Throttle
CH Pro Throttle needs NOGET the same way as other products from
the same vendor require.
Reported-by: Unavowed <unavowed@vexillium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Chase Douglas [Fri, 1 Apr 2011 21:03:39 +0000 (17:03 -0400)]
HID: hid-magicmouse: Increase evdev buffer size
The evdev buffer isn't big enough when you get many fingers on the
device. Bump up the buffer to a reasonable size, matching what other
multitouch devices use. Without this change, events may be discarded in
the evdev buffer before they are read.
Reported-by: Simon Budig <simon@budig.de>
Cc: Henrik Rydberg <rydberg@euromail.se>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: stable@kernel.org
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Acked-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Ingo Molnar [Wed, 6 Apr 2011 11:09:00 +0000 (13:09 +0200)]
Merge branch 'perf/urgent' of git://git./linux/kernel/git/acme/linux-2.6 into perf/urgent
Andre Przywara [Thu, 31 Mar 2011 14:58:49 +0000 (16:58 +0200)]
KVM: move and fix substitue search for missing CPUID entries
If KVM cannot find an exact match for a requested CPUID leaf, the
code will try to find the closest match instead of simply confessing
it's failure.
The implementation was meant to satisfy the CPUID specification, but
did not properly check for extended and standard leaves and also
didn't account for the index subleaf.
Beside that this rule only applies to CPUID intercepts, which is not
the only user of the kvm_find_cpuid_entry() function.
So fix this algorithm and call it from kvm_emulate_cpuid().
This fixes a crash of newer Linux kernels as KVM guests on
AMD Bulldozer CPUs, where bogus values were returned in response to
a CPUID intercept.
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Andre Przywara [Wed, 30 Mar 2011 13:01:45 +0000 (15:01 +0200)]
KVM: fix XSAVE bit scanning
When KVM scans the 0xD CPUID leaf for propagating the XSAVE save area
leaves, it assumes that the leaves are contigious and stops at the
first zero one. On AMD hardware there is a gap, though, as LWP uses
leaf 62 to announce it's state save area.
So lets iterate through all 64 possible leaves and simply skip zero
ones to also cover later features.
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>