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Linus Torvalds [Tue, 18 May 2010 14:22:37 +0000 (07:22 -0700)]
Merge branch 'core-iommu-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86/amd-iommu: Add amd_iommu=off command line option
iommu-api: Remove iommu_{un}map_range functions
x86/amd-iommu: Implement ->{un}map callbacks for iommu-api
x86/amd-iommu: Make amd_iommu_iova_to_phys aware of multiple page sizes
x86/amd-iommu: Make iommu_unmap_page and fetch_pte aware of page sizes
x86/amd-iommu: Make iommu_map_page and alloc_pte aware of page sizes
kvm: Change kvm_iommu_map_pages to map large pages
VT-d: Change {un}map_range functions to implement {un}map interface
iommu-api: Add ->{un}map callbacks to iommu_ops
iommu-api: Add iommu_map and iommu_unmap functions
iommu-api: Rename ->{un}map function pointers to ->{un}map_range
Linus Torvalds [Tue, 18 May 2010 14:20:19 +0000 (07:20 -0700)]
Merge branch 'core-debugobjects-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'core-debugobjects-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
debugobjects: Section mismatch cleanup
Linus Torvalds [Tue, 18 May 2010 14:18:38 +0000 (07:18 -0700)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (23 commits)
cifs: fix noserverino handling when unix extensions are enabled
cifs: don't update uniqueid in cifs_fattr_to_inode
cifs: always revalidate hardlinked inodes when using noserverino
[CIFS] drop quota operation stubs
cifs: propagate cifs_new_fileinfo() error back to the caller
cifs: add comments explaining cifs_new_fileinfo behavior
cifs: remove unused parameter from cifs_posix_open_inode_helper()
[CIFS] Remove unused cifs_oplock_cachep
cifs: have decode_negTokenInit set flags in server struct
cifs: break negotiate protocol calls out of cifs_setup_session
cifs: eliminate "first_time" parm to CIFS_SessSetup
[CIFS] Fix lease break for writes
cifs: save the dialect chosen by server
cifs: change && to ||
cifs: rename "extended_security" to "global_secflags"
cifs: move tcon find/create into separate function
cifs: move SMB session creation code into separate function
cifs: track local_nls in volume info
[CIFS] Allow null nd (as nfs server uses) on create
[CIFS] Fix losing locks during fork()
...
Jeff Layton [Mon, 17 May 2010 11:18:58 +0000 (07:18 -0400)]
cifs: fix noserverino handling when unix extensions are enabled
The uniqueid field sent by the server when unix extensions are enabled
is currently used sometimes when it shouldn't be. The readdir codepath
is correct, but most others are not. Fix it.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Jeff Layton [Mon, 17 May 2010 11:18:57 +0000 (07:18 -0400)]
cifs: don't update uniqueid in cifs_fattr_to_inode
We use this value to find an inode within the hash bucket, so we can't
change this without re-hashing the inode. For now, treat this value
as immutable.
Eventually, we should probably use an inode number change on a path
based operation to indicate that the lookup cache is invalid, but that's
a bit more code to deal with.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Jeff Layton [Mon, 17 May 2010 18:51:49 +0000 (14:51 -0400)]
cifs: always revalidate hardlinked inodes when using noserverino
The old cifs_revalidate logic always revalidated hardlinked inodes.
This hack allowed CIFS to pass some connectathon tests when server inode
numbers aren't used (basic test7, in particular).
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Linus Torvalds [Mon, 17 May 2010 20:54:29 +0000 (13:54 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: amiga - Floppy platform device conversion
m68k: amiga - Sound platform device conversion
m68k: amiga - Frame buffer platform device conversion
m68k: amiga - Zorro host bridge platform device conversion
m68k: amiga - Zorro bus modalias support
platform: Make platform resource input parameters const
m68k: invoke oom-killer from page fault
serial167: Kill unused variables
m68k: Implement generic_find_next_{zero_,}le_bit()
m68k: hp300 - Checkpatch cleanup
m68k: Remove trailing spaces in messages
m68k: Simplify param.h by using <asm-generic/param.h>
m68k: Remove BKL from rtc implementations
Linus Torvalds [Mon, 17 May 2010 20:53:35 +0000 (13:53 -0700)]
Merge git://git./linux/kernel/git/joern/logfs
* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs:
logfs: handle powerfail on NAND flash
logfs: handle errors from get_mtd_device()
logfs: remove unused variable
logfs: fix sync
logfs: fix compile failure
logfs: initialize li->li_refcount
logfs: commit reservations under space pressure
logfs: survive logfs_buf_recover read errors
logfs: Close i_ino reuse race
logfs: fix logfs_seek_hole()
logfs: Return -EINVAL if filesystem image doesn't match
LogFS: Fix typo in
b6349ac8
logfs: testing the wrong variable
Linus Torvalds [Mon, 17 May 2010 20:48:10 +0000 (13:48 -0700)]
Merge branch 'bkl/core' of git://git./linux/kernel/git/frederic/random-tracing
* 'bkl/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing:
ptrace: Cleanup useless header
ptrace: kill BKL in ptrace syscall
Geert Uytterhoeven [Sun, 5 Apr 2009 11:02:13 +0000 (13:02 +0200)]
m68k: amiga - Floppy platform device conversion
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Geert Uytterhoeven [Sun, 5 Apr 2009 10:59:54 +0000 (12:59 +0200)]
m68k: amiga - Sound platform device conversion
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Geert Uytterhoeven [Sun, 5 Apr 2009 10:45:56 +0000 (12:45 +0200)]
m68k: amiga - Frame buffer platform device conversion
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Geert Uytterhoeven [Sun, 5 Apr 2009 10:40:41 +0000 (12:40 +0200)]
m68k: amiga - Zorro host bridge platform device conversion
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Geert Uytterhoeven [Tue, 18 Nov 2008 20:13:53 +0000 (21:13 +0100)]
m68k: amiga - Zorro bus modalias support
Add Amiga Zorro bus modalias and uevent support
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Geert Uytterhoeven [Wed, 28 Jan 2009 20:01:02 +0000 (21:01 +0100)]
platform: Make platform resource input parameters const
Make the platform resource input parameters of platform_device_add_resources()
and platform_device_register_simple() const, as the resources are copied and
never modified.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Nick Piggin [Thu, 22 Apr 2010 16:06:20 +0000 (02:06 +1000)]
m68k: invoke oom-killer from page fault
As explained in commit
1c0fe6e3bd, we want to call the architecture independent
oom killer when getting an unexplained OOM from handle_mm_fault, rather than
simply killing current.
Cc: linux-m68k@lists.linux-m68k.org
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
[Geert] Kill 2 introduced compiler warnings
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Geert Uytterhoeven [Wed, 14 Apr 2010 16:48:50 +0000 (18:48 +0200)]
serial167: Kill unused variables
commits
638157bc1461f6718eeca06bedd9a09cf1f35c36 ("serial167: prepare to push
BKL down into drivers") and
4165fe4ef7305609a96c7f248cefb9c414d0ede5 ("tty:
Fix up char drivers request_room usage") removed code without removing the
corresponding variables:
| drivers/char/serial167.c: In function 'cd2401_rx_interrupt':
| drivers/char/serial167.c:630: warning: unused variable 'len'
| drivers/char/serial167.c: In function 'cy_ioctl':
| drivers/char/serial167.c:1531: warning: unused variable 'val'
Remove the variables to kill the warnings.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Geert Uytterhoeven [Sun, 28 Feb 2010 12:06:27 +0000 (13:06 +0100)]
m68k: Implement generic_find_next_{zero_,}le_bit()
linux-next:
fs/udf/balloc.c: In function 'udf_bitmap_new_block':
fs/udf/balloc.c:274: error: implicit declaration of function 'generic_find_next_le_bit'
Convert ext2_find_next_{zero_,}bit() into generic_find_next_{zero_,}le_bit(),
and wrap the ext2_find_next_{zero_,}bit() around the latter.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Andrea Gelmini [Sat, 27 Feb 2010 16:51:33 +0000 (17:51 +0100)]
m68k: hp300 - Checkpatch cleanup
arch/m68k/hp300/time.h:2: WARNING: space prohibited between function name and open parenthesis '('
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Frans Pop [Sat, 6 Feb 2010 17:47:11 +0000 (18:47 +0100)]
m68k: Remove trailing spaces in messages
Signed-off-by: Frans Pop <elendil@planet.nl>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Robert P. J. Day [Thu, 31 Dec 2009 20:35:44 +0000 (15:35 -0500)]
m68k: Simplify param.h by using <asm-generic/param.h>
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Thomas Gleixner [Thu, 15 Oct 2009 08:42:21 +0000 (08:42 +0000)]
m68k: Remove BKL from rtc implementations
m68k does not support SMP. The access to the rtc is already serialized
with local_irq_save/restore which is sufficient on UP.
The open() protection in arch/m68k/mvme16x/rtc.c is not pretty but
sufficient on UP and safe w/o the BKL.
open() in arch/m68k/bvme6000/rtc.c can do with the same atomic logic
as arch/m68k/mvme16x/rtc.c
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Anton Blanchard [Mon, 17 May 2010 04:34:57 +0000 (14:34 +1000)]
atomic_t: Remove volatile from atomic_t definition
When looking at a performance problem on PowerPC, I noticed some awful code
generation:
c00000000051fc98: 3b 60 00 01 li r27,1
...
c00000000051fca0: 3b 80 00 00 li r28,0
...
c00000000051fcdc: 93 61 00 70 stw r27,112(r1)
c00000000051fce0: 93 81 00 74 stw r28,116(r1)
c00000000051fce4: 81 21 00 70 lwz r9,112(r1)
c00000000051fce8: 80 01 00 74 lwz r0,116(r1)
c00000000051fcec: 7d 29 07 b4 extsw r9,r9
c00000000051fcf0: 7c 00 07 b4 extsw r0,r0
c00000000051fcf4: 7c 20 04 ac lwsync
c00000000051fcf8: 7d 60 f8 28 lwarx r11,0,r31
c00000000051fcfc: 7c 0b 48 00 cmpw r11,r9
c00000000051fd00: 40 c2 00 10 bne-
c00000000051fd10
c00000000051fd04: 7c 00 f9 2d stwcx. r0,0,r31
c00000000051fd08: 40 c2 ff f0 bne+
c00000000051fcf8
c00000000051fd0c: 4c 00 01 2c isync
We create two constants, write them out to the stack, read them straight back
in and sign extend them. What a mess.
It turns out this bad code is a result of us defining atomic_t as a
volatile int.
We removed the volatile attribute from the powerpc atomic_t definition years
ago, but commit
ea435467500612636f8f4fb639ff6e76b2496e4b (atomic_t: unify all
arch definitions) added it back in.
To dig up an old quote from Linus:
> The fact is, volatile on data structures is a bug. It's a wart in the C
> language. It shouldn't be used.
>
> Volatile accesses in *code* can be ok, and if we have "atomic_read()"
> expand to a "*(volatile int *)&(x)->value", then I'd be ok with that.
>
> But marking data structures volatile just makes the compiler screw up
> totally, and makes code for initialization sequences etc much worse.
And screw up it does :)
With the volatile removed, we see much more reasonable code generation:
c00000000051f5b8: 3b 60 00 01 li r27,1
...
c00000000051f5c0: 3b 80 00 00 li r28,0
...
c00000000051fc7c: 7c 20 04 ac lwsync
c00000000051fc80: 7c 00 f8 28 lwarx r0,0,r31
c00000000051fc84: 7c 00 d8 00 cmpw r0,r27
c00000000051fc88: 40 c2 00 10 bne-
c00000000051fc98
c00000000051fc8c: 7f 80 f9 2d stwcx. r28,0,r31
c00000000051fc90: 40 c2 ff f0 bne+
c00000000051fc80
c00000000051fc94: 4c 00 01 2c isync
Six instructions less.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anton Blanchard [Mon, 17 May 2010 04:33:53 +0000 (14:33 +1000)]
atomic_t: Cast to volatile when accessing atomic variables
In preparation for removing volatile from the atomic_t definition, this
patch adds a volatile cast to all the atomic read functions.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 16 May 2010 21:17:36 +0000 (14:17 -0700)]
Linus 2.6.34
Linus Torvalds [Sun, 16 May 2010 18:11:53 +0000 (11:11 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
rtnetlink: make SR-IOV VF interface symmetric
sctp: delete active ICMP proto unreachable timer when free transport
tcp: fix MD5 (RFC2385) support
Linus Torvalds [Sun, 16 May 2010 18:11:31 +0000 (11:11 -0700)]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
MIPS: Oprofile: Fix Loongson irq handler
MIPS: N32: Use compat version for sys_ppoll.
MIPS FPU emulator: allow Cause bits of FCSR to be writeable by ctc1
Chris Wright [Sun, 16 May 2010 08:05:45 +0000 (01:05 -0700)]
rtnetlink: make SR-IOV VF interface symmetric
Now we have a set of nested attributes:
IFLA_VFINFO_LIST (NESTED)
IFLA_VF_INFO (NESTED)
IFLA_VF_MAC
IFLA_VF_VLAN
IFLA_VF_TX_RATE
This allows a single set to operate on multiple attributes if desired.
Among other things, it means a dump can be replayed to set state.
The current interface has yet to be released, so this seems like
something to consider for 2.6.34.
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Sun, 9 May 2010 16:56:07 +0000 (16:56 +0000)]
sctp: delete active ICMP proto unreachable timer when free transport
transport may be free before ICMP proto unreachable timer expire, so
we should delete active ICMP proto unreachable timer when transport
is going away.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sun, 16 May 2010 07:34:04 +0000 (00:34 -0700)]
tcp: fix MD5 (RFC2385) support
TCP MD5 support uses percpu data for temporary storage. It currently
disables preemption so that same storage cannot be reclaimed by another
thread on same cpu.
We also have to make sure a softirq handler wont try to use also same
context. Various bug reports demonstrated corruptions.
Fix is to disable preemption and BH.
Reported-by: Bhaskar Dutta <bhaskie@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wu Zhangjin [Thu, 6 May 2010 16:59:46 +0000 (00:59 +0800)]
MIPS: Oprofile: Fix Loongson irq handler
The interrupt enable bit for the performance counters is in the Control
Register $24, not in the counter register.
loongson2_perfcount_handler(), we need to use
Reported-by: Xu Hengyang <hengyang@mail.ustc.edu.cn>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1198/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
Chandrakala Chavva [Tue, 11 May 2010 00:11:54 +0000 (17:11 -0700)]
MIPS: N32: Use compat version for sys_ppoll.
The sys_ppoll() takes struct 'struct timespec'. This is different for the
N32 and N64 ABIs. Use the compat version to do the proper conversions.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1210/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
Shane McDonald [Fri, 7 May 2010 05:26:57 +0000 (23:26 -0600)]
MIPS FPU emulator: allow Cause bits of FCSR to be writeable by ctc1
In the FPU emulator code of the MIPS, the Cause bits of the FCSR register
are not currently writeable by the ctc1 instruction. In odd corner cases,
this can cause problems. For example, a case existed where a divide-by-zero
exception was generated by the FPU, and the signal handler attempted to
restore the FPU registers to their state before the exception occurred. In
this particular setup, writing the old value to the FCSR register would
cause another divide-by-zero exception to occur immediately. The solution
is to change the ctc1 instruction emulator code to allow the Cause bits of
the FCSR register to be writeable. This is the behaviour of the hardware
that the code is emulating.
This problem was found by Shane McDonald, but the credit for the fix goes
to Kevin Kissell. In Kevin's words:
I submit that the bug is indeed in that ctc_op: case of the emulator. The
Cause bits (17:12) are supposed to be writable by that instruction, but the
CTC1 emulation won't let them be updated by the instruction. I think that
actually if you just completely removed lines 387-388 [...] things would
work a good deal better. At least, it would be a more accurate emulation of
the architecturally defined FPU. If I wanted to be really, really pedantic
(which I sometimes do), I'd also protect the reserved bits that aren't
necessarily writable.
Signed-off-by: Shane McDonald <mcdonald.shane@gmail.com>
To: anemo@mba.ocn.ne.jp
To: kevink@paralogos.com
To: sshtylyov@mvista.com
Patchwork: http://patchwork.linux-mips.org/patch/1205/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
Linus Torvalds [Sat, 15 May 2010 19:55:31 +0000 (12:55 -0700)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: check for read permission on src file in the clone ioctl
kirjanov@gmail.com [Sat, 15 May 2010 16:32:34 +0000 (12:32 -0400)]
lib/btree: fix possible NULL pointer dereference
mempool_alloc() can return null in atomic case.
Signed-off-by: Denis Kirjanov <kirjanov@gmail.com>
Cc: Joern Engel <joern@logfs.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nicolas Ferre [Sat, 15 May 2010 16:32:31 +0000 (12:32 -0400)]
mmc: at91_mci: modify cache flush routines
As we were using an internal dma flushing routine, this patch changes to
the DMA API flush_kernel_dcache_page(). Driver is able to compile now.
[akpm@linux-foundation.org: flush_kernel_dcache_page() comes before kunmap_atomic()]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Rosenberg [Sat, 15 May 2010 15:27:37 +0000 (11:27 -0400)]
Btrfs: check for read permission on src file in the clone ioctl
The existing code would have allowed you to clone a file that was
only open for writing
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Linus Torvalds [Sat, 15 May 2010 16:03:15 +0000 (09:03 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
JFS: Free sbi memory in error path
fs/sysv: dereferencing ERR_PTR()
Fix double-free in logfs
Fix the regression created by "set S_DEAD on unlink()..." commit
Linus Torvalds [Sat, 15 May 2010 16:03:02 +0000 (09:03 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf record: Add a fallback to the reference relocation symbol
Jan Blunck [Mon, 12 Apr 2010 23:44:08 +0000 (16:44 -0700)]
JFS: Free sbi memory in error path
I spotted the missing kfree() while removing the BKL.
[akpm@linux-foundation.org: avoid multiple returns so it doesn't happen again]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Dan Carpenter [Wed, 21 Apr 2010 10:30:32 +0000 (12:30 +0200)]
fs/sysv: dereferencing ERR_PTR()
I moved the dir_put_page() inside the if condition so we don't dereference
"page", if it's an ERR_PTR().
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Thu, 29 Apr 2010 00:57:02 +0000 (20:57 -0400)]
Fix double-free in logfs
iput() is needed *until* we'd done successful d_alloc_root()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Fri, 30 Apr 2010 21:17:09 +0000 (17:17 -0400)]
Fix the regression created by "set S_DEAD on unlink()..." commit
1) i_flags simply doesn't work for mount/unlink race prevention;
we may have many links to file and rm on one of those obviously
shouldn't prevent bind on top of another later on. To fix it
right way we need to mark _dentry_ as unsuitable for mounting
upon; new flag (DCACHE_CANT_MOUNT) is protected by d_flags and
i_mutex on the inode in question. Set it (with dont_mount(dentry))
in unlink/rmdir/etc., check (with cant_mount(dentry)) in places
in namespace.c that used to check for S_DEAD. Setting S_DEAD
is still needed in places where we used to set it (for directories
getting killed), since we rely on it for readdir/rmdir race
prevention.
2) rename()/mount() protection has another bogosity - we unhash
the target before we'd checked that it's not a mountpoint. Fixed.
3) ancient bogosity in pivot_root() - we locked i_mutex on the
right directory, but checked S_DEAD on the different (and wrong)
one. Noticed and fixed.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Sat, 15 May 2010 04:28:42 +0000 (21:28 -0700)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 6126/1: ARM mpcore_wdt: fix build failure and other fixes
ARM: 6125/1: ARM TWD: move TWD registers to common header
ARM: 6110/1: Fix Thumb-2 kernel builds when UACCESS_WITH_MEMCPY is enabled
ARM: 6112/1: Use the Inner Shareable I-cache and BTB ops on ARMv7 SMP
ARM: 6111/1: Implement read/write for ownership in the ARMv6 DMA cache ops
ARM: 6106/1: Implement copy_to_user_page() for noMMU
ARM: 6105/1: Fix the __arm_ioremap_caller() definition in nommu.c
Linus Torvalds [Sat, 15 May 2010 04:28:23 +0000 (21:28 -0700)]
Merge branch 'x86-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, mrst: Don't blindly access extended config space
Hugh Dickins [Sat, 15 May 2010 02:44:10 +0000 (19:44 -0700)]
profile: fix stats and data leakage
If the kernel is large or the profiling step small, /proc/profile
leaks data and readprofile shows silly stats, until readprofile -r
has reset the buffer: clear the prof_buffer when it is vmalloc()ed.
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Sat, 15 May 2010 02:40:35 +0000 (19:40 -0700)]
hughd: update email address
My old address will shut down in a couple of weeks: update the tree.
Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
H. Peter Anvin [Fri, 14 May 2010 20:55:57 +0000 (13:55 -0700)]
x86, mrst: Don't blindly access extended config space
Do not blindly access extended configuration space unless we actively
know we're on a Moorestown platform. The fixed-size BAR capability
lives in the extended configuration space, and thus is not applicable
if the configuration space isn't appropriately sized.
This fixes booting certain VMware configurations with CONFIG_MRST=y.
Moorestown will add a fake PCI-X 266 capability to advertise the
presence of extended configuration space.
Reported-and-tested-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Acked-by: Jacob Pan <jacob.jun.pan@intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
LKML-Reference: <AANLkTiltKUa3TrKR1M51eGw8FLNoQJSLT0k0_K5X3-OJ@mail.gmail.com>
Linus Torvalds [Fri, 14 May 2010 19:20:09 +0000 (12:20 -0700)]
Merge branch 'x86-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, cacheinfo: Turn off L3 cache index disable feature in virtualized environments
x86, k8: Fix build error when K8_NB is disabled
x86, amd: Check X86_FEATURE_OSVW bit before accessing OSVW MSRs
x86: Fix fake apicid to node mapping for numa emulation
Frank Arnold [Thu, 22 Apr 2010 14:06:59 +0000 (16:06 +0200)]
x86, cacheinfo: Turn off L3 cache index disable feature in virtualized environments
When running a quest kernel on xen we get:
BUG: unable to handle kernel NULL pointer dereference at
0000000000000038
IP: [<
ffffffff8142f2fb>] cpuid4_cache_lookup_regs+0x2ca/0x3df
PGD 0
Oops: 0000 [#1] SMP
last sysfs file:
CPU 0
Modules linked in:
Pid: 0, comm: swapper Tainted: G W 2.6.34-rc3 #1 /HVM domU
RIP: 0010:[<
ffffffff8142f2fb>] [<
ffffffff8142f2fb>] cpuid4_cache_lookup_regs+0x
2ca/0x3df
RSP: 0018:
ffff880002203e08 EFLAGS:
00010046
RAX:
0000000000000000 RBX:
0000000000000003 RCX:
0000000000000060
RDX:
0000000000000000 RSI:
0000000000000040 RDI:
0000000000000000
RBP:
ffff880002203ed8 R08:
00000000000017c0 R09:
ffff880002203e38
R10:
ffff8800023d5d40 R11:
ffffffff81a01e28 R12:
ffff880187e6f5c0
R13:
ffff880002203e34 R14:
ffff880002203e58 R15:
ffff880002203e68
FS:
0000000000000000(0000) GS:
ffff880002200000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
000000008005003b
CR2:
0000000000000038 CR3:
0000000001a3c000 CR4:
00000000000006f0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000ffff0ff0 DR7:
0000000000000400
Process swapper (pid: 0, threadinfo
ffffffff81a00000, task
ffffffff81a44020)
Stack:
ffffffff810d7ecb ffff880002203e20 ffffffff81059140 ffff880002203e30
<0>
ffffffff810d7ec9 0000000002203e40 000000000050d140 ffff880002203e70
<0>
0000000002008140 0000000000000086 ffff880040020140 ffffffff81068b8b
Call Trace:
<IRQ>
[<
ffffffff810d7ecb>] ? sync_supers_timer_fn+0x0/0x1c
[<
ffffffff81059140>] ? mod_timer+0x23/0x25
[<
ffffffff810d7ec9>] ? arm_supers_timer+0x34/0x36
[<
ffffffff81068b8b>] ? hrtimer_get_next_event+0xa7/0xc3
[<
ffffffff81058e85>] ? get_next_timer_interrupt+0x19a/0x20d
[<
ffffffff8142fa23>] get_cpu_leaves+0x5c/0x232
[<
ffffffff8106a7b1>] ? sched_clock_local+0x1c/0x82
[<
ffffffff8106a9a0>] ? sched_clock_tick+0x75/0x7a
[<
ffffffff8107748c>] generic_smp_call_function_single_interrupt+0xae/0xd0
[<
ffffffff8101f6ef>] smp_call_function_single_interrupt+0x18/0x27
[<
ffffffff8100a773>] call_function_single_interrupt+0x13/0x20
<EOI>
[<
ffffffff8143c468>] ? notifier_call_chain+0x14/0x63
[<
ffffffff810295c6>] ? native_safe_halt+0xc/0xd
[<
ffffffff810114eb>] ? default_idle+0x36/0x53
[<
ffffffff81008c22>] cpu_idle+0xaa/0xe4
[<
ffffffff81423a9a>] rest_init+0x7e/0x80
[<
ffffffff81b10dd2>] start_kernel+0x40e/0x419
[<
ffffffff81b102c8>] x86_64_start_reservations+0xb3/0xb7
[<
ffffffff81b103c4>] x86_64_start_kernel+0xf8/0x107
Code: 14 d5 40 ff ae 81 8b 14 02 31 c0 3b 15 47 1c 8b 00 7d 0e 48 8b 05 36 1c 8b
00 48 63 d2 48 8b 04 d0 c7 85 5c ff ff ff 00 00 00 00 <8b> 70 38 48 8d 8d 5c ff
ff ff 48 8b 78 10 ba c4 01 00 00 e8 eb
RIP [<
ffffffff8142f2fb>] cpuid4_cache_lookup_regs+0x2ca/0x3df
RSP <
ffff880002203e08>
CR2:
0000000000000038
---[ end trace
a7919e7f17c0a726 ]---
The L3 cache index disable feature of AMD CPUs has to be disabled if the
kernel is running as guest on top of a hypervisor because northbridge
devices are not available to the guest. Currently, this fixes a boot
crash on top of Xen. In the future this will become an issue on KVM as
well.
Check if northbridge devices are present and do not enable the feature
if there are none.
[ hpa: backported to 2.6.34 ]
Signed-off-by: Frank Arnold <frank.arnold@amd.com>
LKML-Reference: <
1271945222-5283-3-git-send-email-bp@amd64.org>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@kernel.org>
Borislav Petkov [Sat, 24 Apr 2010 07:56:53 +0000 (09:56 +0200)]
x86, k8: Fix build error when K8_NB is disabled
K8_NB depends on PCI and when the last is disabled (allnoconfig) we fail
at the final linking stage due to missing exported num_k8_northbridges.
Add a header stub for that.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <
20100503183036.GJ26107@aftab>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@kernel.org>
Linus Torvalds [Fri, 14 May 2010 18:49:42 +0000 (11:49 -0700)]
Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify
* 'for-linus' of git://git.infradead.org/users/eparis/notify:
inotify: don't leak user struct on inotify release
inotify: race use after free/double free in inotify inode marks
inotify: clean up the inotify_add_watch out path
Inotify: undefined reference to `anon_inode_getfd'
Manual merge to remove duplicate "select ANON_INODES" from Kconfig file
Linus Torvalds [Fri, 14 May 2010 18:43:52 +0000 (11:43 -0700)]
Merge branch 'davinci-fixes-for-linus-2' of git://git./linux/kernel/git/khilman/linux-davinci
* 'davinci-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci:
DA830: fix USB 2.0 clock entry
Sergei Shtylyov [Thu, 13 May 2010 18:51:51 +0000 (22:51 +0400)]
DA830: fix USB 2.0 clock entry
DA8xx OHCI driver fails to load due to failing clk_get() call for the USB 2.0
clock. Arrange matching USB 2.0 clock by the clock name instead of the device.
(Adding another CLK() entry for "ohci.0" device won't do -- in the future I'll
also have to enable USB 2.0 clock to configure CPPI 4.1 module, in which case
I won't have any device at all.)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Steve French [Fri, 14 May 2010 17:11:48 +0000 (17:11 +0000)]
Merge branch 'master' of /linux/kernel/git/torvalds/linux-2.6
Pavel Emelyanov [Wed, 12 May 2010 22:34:07 +0000 (15:34 -0700)]
inotify: don't leak user struct on inotify release
inotify_new_group() receives a get_uid-ed user_struct and saves the
reference on group->inotify_data.user. The problem is that free_uid() is
never called on it.
Issue seem to be introduced by
63c882a0 (inotify: reimplement inotify
using fsnotify) after 2.6.30.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Eric Paris <eparis@parisplace.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Eric Paris <eparis@redhat.com>
Eric Paris [Tue, 11 May 2010 21:17:40 +0000 (17:17 -0400)]
inotify: race use after free/double free in inotify inode marks
There is a race in the inotify add/rm watch code. A task can find and
remove a mark which doesn't have all of it's references. This can
result in a use after free/double free situation.
Task A Task B
------------ -----------
inotify_new_watch()
allocate a mark (refcnt == 1)
add it to the idr
inotify_rm_watch()
inotify_remove_from_idr()
fsnotify_put_mark()
refcnt hits 0, free
take reference because we are on idr
[at this point it is a use after free]
[time goes on]
refcnt may hit 0 again, double free
The fix is to take the reference BEFORE the object can be found in the
idr.
Signed-off-by: Eric Paris <eparis@redhat.com>
Cc: <stable@kernel.org>
Eric Paris [Tue, 11 May 2010 21:16:23 +0000 (17:16 -0400)]
inotify: clean up the inotify_add_watch out path
inotify_add_watch explictly frees the unused inode mark, but it can just
use the generic code. Just do that.
Signed-off-by: Eric Paris <eparis@redhat.com>
Steve French [Fri, 14 May 2010 15:15:28 +0000 (15:15 +0000)]
Merge branch 'master' of /linux/kernel/git/torvalds/linux-2.6
Linus Torvalds [Fri, 14 May 2010 14:56:45 +0000 (07:56 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
vhost: fix barrier pairing
Linus Torvalds [Fri, 14 May 2010 14:55:42 +0000 (07:55 -0700)]
Merge branch 'for-linus' of git://git./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:
mmap_min_addr check CAP_SYS_RAWIO only for write
Linus Torvalds [Fri, 14 May 2010 14:29:29 +0000 (07:29 -0700)]
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Fix module loading on system with WB cache
microblaze: export assembly functions used by modules
microblaze: Remove powerpc code from Microblaze port
microblaze: Remove compilation warnings in cache macro
microblaze: export assembly functions used by modules
microblaze: fix get_user/put_user side-effects
microblaze: re-enable interrupts before calling schedule
David S. Miller [Fri, 14 May 2010 10:42:49 +0000 (03:42 -0700)]
Merge branch 'net-2.6' of git://git./linux/kernel/git/mst/vhost
Kees Cook [Thu, 22 Apr 2010 19:19:17 +0000 (12:19 -0700)]
mmap_min_addr check CAP_SYS_RAWIO only for write
Redirecting directly to lsm, here's the patch discussed on lkml:
http://lkml.org/lkml/2010/4/22/219
The mmap_min_addr value is useful information for an admin to see without
being root ("is my system vulnerable to kernel NULL pointer attacks?") and
its setting is trivially easy for an attacker to determine by calling
mmap() in PAGE_SIZE increments starting at 0, so trying to keep it private
has no value.
Only require CAP_SYS_RAWIO if changing the value, not reading it.
Comment from Serge :
Me, I like to write my passwords with light blue pen on dark blue
paper, pasted on my window - if you're going to get my password, you're
gonna get a headache.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
(cherry picked from commit
822cceec7248013821d655545ea45d1c6a9d15b3)
Michal Simek [Fri, 14 May 2010 05:40:46 +0000 (07:40 +0200)]
microblaze: Fix module loading on system with WB cache
There is necessary to flush whole dcache. Icache work should be
done in kernel/module.c.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Andreas Herrmann [Tue, 27 Apr 2010 10:13:48 +0000 (12:13 +0200)]
x86, amd: Check X86_FEATURE_OSVW bit before accessing OSVW MSRs
If host CPU is exposed to a guest the OSVW MSRs are not guaranteed
to be present and a GP fault occurs. Thus checking the feature flag is
essential.
Cc: <stable@kernel.org> # .32.x .33.x
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <
20100427101348.GC4489@alberich.amd.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Steve French [Thu, 13 May 2010 22:19:32 +0000 (22:19 +0000)]
Merge branch 'master' of /linux/kernel/git/torvalds/linux-2.6
Conflicts:
fs/cifs/inode.c
Linus Torvalds [Thu, 13 May 2010 21:48:10 +0000 (14:48 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sameo/mfd-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
mfd: Clean up after WM83xx AUXADC interrupt if it arrives late
Linus Torvalds [Thu, 13 May 2010 21:36:19 +0000 (14:36 -0700)]
Merge branch 'kvm-updates/2.6.34' of git://git./virt/kvm/kvm
* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: PPC: Keep index within boundaries in kvmppc_44x_emul_tlbwe()
KVM: VMX: blocked-by-sti must not defer NMI injections
KVM: x86: Call vcpu_load and vcpu_put in cpuid_update
KVM: SVM: Fix wrong intercept masks on 32 bit
KVM: convert ioapic lock to spinlock
Linus Torvalds [Thu, 13 May 2010 19:21:44 +0000 (12:21 -0700)]
Merge git://git./linux/kernel/git/gregkh/tty-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
serial: imx.c: fix CTS trigger level lower to avoid lost chars
tty: Fix unbalanced BKL handling in error path
serial: mpc52xx_uart: fix null pointer dereference
Valentin Longchamp [Wed, 5 May 2010 09:47:07 +0000 (11:47 +0200)]
serial: imx.c: fix CTS trigger level lower to avoid lost chars
The imx CTS trigger level is left at its reset value that is 32
chars. Since the RX FIFO has 32 entries, when CTS is raised, the
FIFO already is full. However, some serial port devices first empty
their TX FIFO before stopping when CTS is raised, resulting in lost
chars.
This patch sets the trigger level lower so that other chars arrive
after CTS is raised, there is still room for 16 of them.
Signed-off-by: Valentin Longchamp<valentin.longchamp@epfl.ch>
Tested-by: Philippe Rétornaz<philippe.retornaz@epfl.ch>
Acked-by: Wolfram Sang<w.sang@pengutronix.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Tue, 4 May 2010 19:42:36 +0000 (20:42 +0100)]
tty: Fix unbalanced BKL handling in error path
Arnd noted:
After the "retry_open:" label, we first get the tty_mutex
and then the BKL. However a the end of tty_open, we jump
back to retry_open with the BKL still held. If we run into
this case, the tty_open function will be left with the BKL
still held.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Anatolij Gustschin [Tue, 4 May 2010 22:18:59 +0000 (00:18 +0200)]
serial: mpc52xx_uart: fix null pointer dereference
Commit
6acc6833510db8f72b5ef343296d97480555fda9
introduced NULL pointer dereference and kernel crash
on ppc32 machines while booting. Fix this bug now.
Reported-by: Leonardo Chiquitto <leonardo.lists@gmail.com>
Tested-by: Leonardo Chiquitto <leonardo.lists@gmail.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Linus Torvalds [Thu, 13 May 2010 17:36:16 +0000 (10:36 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sfrench/cifs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: guard against hardlinking directories
Jan Kara [Thu, 13 May 2010 10:52:57 +0000 (12:52 +0200)]
vfs: Fix O_NOFOLLOW behavior for paths with trailing slashes
According to specification
mkdir d; ln -s d a; open("a/", O_NOFOLLOW | O_RDONLY)
should return success but currently it returns ELOOP. This is a
regression caused by path lookup cleanup patch series.
Fix the code to ignore O_NOFOLLOW in case the provided path has trailing
slashes.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Marius Tolzmann <tolzmann@molgen.mpg.de>
Acked-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 13 May 2010 14:35:26 +0000 (07:35 -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: ice1724 - Fix ESI Maya44 capture source control
ALSA: pcm - Use pgprot_noncached() for MIPS non-coherent archs
ALSA: virtuoso: fix Xonar D1/DX front panel microphone
ALSA: hda - Add hp-dv4 model for IDT 92HD71bx
ALSA: hda - Fix mute-LED GPIO pin for HP dv series
ALSA: hda: Fix 0 dB for Lenovo models using Conexant CX20549 (Venice)
Linus Torvalds [Thu, 13 May 2010 14:28:43 +0000 (07:28 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: ad7877 - keep dma rx buffers in seperate cache lines
Input: psmouse - reset all types of mice before reconnecting
Input: elantech - use all 3 bytes when checking version
Input: iforce - fix Guillemot Jet Leader 3D entry
Input: iforce - add Guillemot Jet Leader Force Feedback
Mark Brown [Fri, 2 Apr 2010 12:08:39 +0000 (13:08 +0100)]
mfd: Clean up after WM83xx AUXADC interrupt if it arrives late
In certain circumstances, especially under heavy load, the AUXADC
completion interrupt may be detected after we've timed out waiting for
it. That conversion would still succeed but the next conversion will
see the completion that was signalled by the interrupt for the previous
conversion and therefore not wait for the AUXADC conversion to run,
causing it to report failure.
Provide a simple, non-invasive cleanup by using try_wait_for_completion()
to ensure that the completion is not signalled before we wait. Since
the AUXADC is run within a mutex we know there can only have been at
most one AUXADC interrupt outstanding. A more involved change should
follow for the next merge window.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Michal Simek [Thu, 13 May 2010 10:11:42 +0000 (12:11 +0200)]
microblaze: export assembly functions used by modules
Export __strncpy_user, memory_size, ioremap_bot for modules.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Michal Simek [Thu, 13 May 2010 10:09:54 +0000 (12:09 +0200)]
microblaze: Remove powerpc code from Microblaze port
Remove eeh_add_device_tree_late which is powerpc specific code.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Michal Simek [Thu, 13 May 2010 08:55:47 +0000 (10:55 +0200)]
microblaze: Remove compilation warnings in cache macro
CC arch/microblaze/kernel/cpu/cache.o
arch/microblaze/kernel/cpu/cache.c: In function '__invalidate_dcache_range_wb':
arch/microblaze/kernel/cpu/cache.c:398: warning: ISO C90 forbids mixed declarations and code
arch/microblaze/kernel/cpu/cache.c: In function '__flush_dcache_range_wb':
arch/microblaze/kernel/cpu/cache.c:509: warning: ISO C90 forbids mixed declara
Signed-off-by: Michal Simek <monstr@monstr.eu>
Steven J. Magnani [Tue, 27 Apr 2010 18:00:35 +0000 (13:00 -0500)]
microblaze: export assembly functions used by modules
Modules that use copy_{to,from}_user(), memcpy(), and memset() fail to build
in certain circumstances.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
Takashi Iwai [Thu, 13 May 2010 08:07:15 +0000 (10:07 +0200)]
Merge branch 'fix/hda' into for-linus
Oskar Schirmer [Thu, 13 May 2010 07:42:23 +0000 (00:42 -0700)]
Input: ad7877 - keep dma rx buffers in seperate cache lines
With dma based spi transmission, data corruption is observed
occasionally. With dma buffers located right next to msg and
xfer fields, cache lines correctly flushed in preparation for
dma usage may be polluted again when writing to fields in the
same cache line.
Make sure cache fields used with dma do not share cache lines
with fields changed during dma handling. As both fields are part
of a struct that is allocated via kzalloc, thus cache aligned,
moving the fields to the 1st position and insert padding for
alignment does the job.
Signed-off-by: Oskar Schirmer <os@emlix.com>
Signed-off-by: Daniel Glöckner <dg@emlix.com>
Signed-off-by: Oliver Schneidewind <osw@emlix.com>
Signed-off-by: Johannes Weiner <jw@emlix.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
[dtor@mail.ru - changed to use ___cacheline_aligned as suggested
by akpm]
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Dmitry Torokhov [Thu, 13 May 2010 07:42:23 +0000 (00:42 -0700)]
Input: psmouse - reset all types of mice before reconnecting
Synaptics hardware requires resetting device after suspend to ram
in order for the device to be operational. The reset lives in
synaptics-specific reconnect handler, but it is not being invoked
if synaptics support is disabled and the device is handled as a
standard PS/2 device (bare or IntelliMouse protocol).
Let's add reset into generic reconnect handler as well.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Dmitry Torokhov [Thu, 13 May 2010 07:41:15 +0000 (00:41 -0700)]
Input: elantech - use all 3 bytes when checking version
Apparently all 3 bytes returned by ETP_FW_VERSION_QUERY are significant
and should be taken into account when matching hardware version/features.
Tested-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Steven J. Magnani [Thu, 6 May 2010 21:38:33 +0000 (16:38 -0500)]
microblaze: fix get_user/put_user side-effects
The Microblaze implementations of get_user() and (MMU) put_user() evaluate
the address argument more than once. This causes unexpected side-effects for
invocations that include increment operators, i.e. get_user(foo, bar++).
This patch also removes the distinction between MMU and noMMU put_user().
Without the patch:
$ echo
1234567890 > /proc/sys/kernel/core_pattern
$ cat /proc/sys/kernel/core_pattern
12345
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Steven J. Magnani [Tue, 27 Apr 2010 18:00:23 +0000 (13:00 -0500)]
microblaze: re-enable interrupts before calling schedule
schedule() should not be called with interrupts disabled.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
Arnaldo Carvalho de Melo [Tue, 30 Mar 2010 21:27:39 +0000 (18:27 -0300)]
perf record: Add a fallback to the reference relocation symbol
Usually "_text" is enough, but I received reports that its not always
available, so fallback to "_stext" for the symbol we use to check if we
need to apply any relocation to all the symbols in the kernel symtab,
for when, for instance, kexec is being used.
Reported-by: Darren Hart <dvhltc@us.ibm.com>
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Roel Kluin [Sun, 9 May 2010 15:26:47 +0000 (17:26 +0200)]
KVM: PPC: Keep index within boundaries in kvmppc_44x_emul_tlbwe()
An index of KVM44x_GUEST_TLB_SIZE is already one too large.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Jan Kiszka [Tue, 11 May 2010 13:16:46 +0000 (15:16 +0200)]
KVM: VMX: blocked-by-sti must not defer NMI injections
As the processor may not consider GUEST_INTR_STATE_STI as a reason for
blocking NMI, it could return immediately with EXIT_REASON_NMI_WINDOW
when we asked for it. But as we consider this state as NMI-blocking, we
can run into an endless loop.
Resolve this by allowing NMI injection if just GUEST_INTR_STATE_STI is
active (originally suggested by Gleb). Intel confirmed that this is
safe, the processor will never complain about NMI injection in this
state.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
KVM-Stable-Tag
Acked-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Dongxiao Xu [Tue, 11 May 2010 10:21:33 +0000 (18:21 +0800)]
KVM: x86: Call vcpu_load and vcpu_put in cpuid_update
cpuid_update may operate VMCS, so vcpu_load() and vcpu_put()
should be called to ensure correctness.
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Joerg Roedel [Wed, 5 May 2010 14:04:43 +0000 (16:04 +0200)]
KVM: SVM: Fix wrong intercept masks on 32 bit
This patch makes KVM on 32 bit SVM working again by
correcting the masks used for iret interception. With the
wrong masks the upper 32 bits of the intercepts are masked
out which leaves vmrun unintercepted. This is not legal on
svm and the vmrun fails.
Bug was introduced by commits
95ba827313 and
3cfc3092.
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Marcelo Tosatti [Fri, 23 Apr 2010 17:03:38 +0000 (14:03 -0300)]
KVM: convert ioapic lock to spinlock
kvm_set_irq is used from non sleepable contexes, so convert ioapic from
mutex to spinlock.
KVM-Stable-Tag.
Tested-by: Ralf Bonenkamp <ralf.bonenkamp@swyx.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Linus Torvalds [Thu, 13 May 2010 01:48:26 +0000 (18:48 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/perf_event: Fix oops due to perf_event_do_pending call
powerpc/swiotlb: Fix off by one in determining boundary of which ops to use
Linus Torvalds [Thu, 13 May 2010 01:47:55 +0000 (18:47 -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] correct address of _stext with CONFIG_SHARED_KERNEL=y
[S390] ptrace: fix return value of do_syscall_trace_enter()
[S390] dasd: fix race between tasklet and dasd_sleep_on
Linus Torvalds [Thu, 13 May 2010 01:47:29 +0000 (18:47 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: preserve seq # on requeued messages after transient transport errors
ceph: fix cap removal races
ceph: zero unused message header, footer fields
ceph: fix locking for waking session requests after reconnect
ceph: resubmit requests on pg mapping change (not just primary change)
ceph: fix open file counting on snapped inodes when mds returns no caps
ceph: unregister osd request on failure
ceph: don't use writeback_control in writepages completion
ceph: unregister bdi before kill_anon_super releases device name
Benjamin Herrenschmidt [Thu, 13 May 2010 01:42:40 +0000 (11:42 +1000)]
Merge commit 'kumar/merge' into merge
Linus Torvalds [Thu, 13 May 2010 01:39:45 +0000 (18:39 -0700)]
Revert "PCI: update bridge resources to get more big ranges in PCI assign unssigned"
This reverts commit
977d17bb1749517b353874ccdc9b85abc7a58c2a, because it
can cause problems with some devices not getting any resources at all
when the resource tree is re-allocated.
For an example of this, see
https://bugzilla.kernel.org/show_bug.cgi?id=15960
(originally https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4982)
(lkml thread: http://lkml.org/lkml/2010/4/19/20)
where Peter Henriksson reported his Xonar DX sound card gone, because
the IO port region was no longer allocated.
Reported-bisected-and-tested-by: Peter Henriksson <peter.henriksson@gmail.com>
Requested-by: Andrew Morton <akpm@linux-foundation.org>
Requested-by: Clemens Ladisch <clemens@ladisch.de>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Wed, 12 May 2010 14:34:03 +0000 (15:34 +0100)]
CacheFiles: Fix error handling in cachefiles_determine_cache_security()
cachefiles_determine_cache_security() is expected to return with a
security override in place. However, if set_create_files_as() fails, we
fail to do this. In this case, we should just reinstate the security
override that was set by the caller.
Furthermore, if set_create_files_as() fails, we should dispose of the
new credentials we were in the process of creating.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>