Akinobu Mita [Sat, 27 Jun 2009 06:35:15 +0000 (15:35 +0900)]
x86: Clean up dump_pagetable()
Use pgtable access helpers for 32-bit version dump_pagetable()
and get rid of __typeof__() operators. This needs to make
pmd_pfn() available for 2-level pgtable.
Also, remove some casts for 64-bit version dump_pagetable().
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090627063514.GA2834@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Linus Torvalds [Sun, 28 Jun 2009 18:12:52 +0000 (11:12 -0700)]
Merge branch 'kvm-updates/2.6.31' of git://git.kernel.org/pub/scm/virt/kvm/kvm
* 'kvm-updates/2.6.31' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: shut up uninit compiler warning in paging_tmpl.h
KVM: Ignore reads to K7 EVNTSEL MSRs
KVM: VMX: Handle vmx instruction vmexits
KVM: s390: Allow stfle instruction in the guest
KVM: kvm/x86_emulate.c toggle_interruptibility() should be static
KVM: ia64: fix ia64 build due to missing kallsyms_lookup() and double export
KVM: protect concurrent make_all_cpus_request
KVM: MMU: Allow 4K ptes with bit 7 (PAT) set
KVM: Fix dirty bit tracking for slots with large pages
Linus Torvalds [Sun, 28 Jun 2009 18:05:28 +0000 (11:05 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, delay: tsc based udelay should have rdtsc_barrier
x86, setup: correct include file in <asm/boot.h>
x86, setup: Fix typo "CONFIG_x86_64" in <asm/boot.h>
x86, mce: percpu mcheck_timer should be pinned
x86: Add sysctl to allow panic on IOCK NMI error
x86: Fix uv bau sending buffer initialization
x86, mce: Fix mce resume on 32bit
x86: Move init_gbpages() to setup_arch()
x86: ensure percpu lpage doesn't consume too much vmalloc space
x86: implement percpu_alloc kernel parameter
x86: fix pageattr handling for lpage percpu allocator and re-enable it
x86: reorganize cpa_process_alias()
x86: prepare setup_pcpu_lpage() for pageattr fix
x86: rename remap percpu first chunk allocator to lpage
x86: fix duplicate free in setup_pcpu_remap() failure path
percpu: fix too lazy vunmap cache flushing
x86: Set cpu_llc_id on AMD CPUs
Linus Torvalds [Sun, 28 Jun 2009 18:05:16 +0000 (11:05 -0700)]
Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
timer stats: Optimize by adding quick check to avoid function calls
timers: Fix timer_migration interface which accepts any number as input
Linus Torvalds [Sun, 28 Jun 2009 18:05:04 +0000 (11:05 -0700)]
Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
ftrace: Fix the output of profile
ring-buffer: Make it generally available
ftrace: Remove duplicate newline
tracing: Fix trace_buf_size boot option
ftrace: Fix t_hash_start()
ftrace: Don't manipulate @pos in t_start()
ftrace: Don't increment @pos in g_start()
tracing: Reset iterator in t_start()
trace_stat: Don't increment @pos in seq start()
tracing_bprintk: Don't increment @pos in t_start()
tracing/events: Don't increment @pos in s_start()
Linus Torvalds [Sun, 28 Jun 2009 18:02:32 +0000 (11:02 -0700)]
Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
leds: Futher document blink_set
leds: Add options to have GPIO LEDs start on or keep their state
leds: LED driver for National Semiconductor LP3944 Funlight Chip
leds: pca9532 - Indent using tabs, not spaces.
leds: Remove an orphan Kconfig entry
leds: Further document parameters for blink_set()
leds: alix-leds2 fixed for Award BIOS
leds: leds-gpio - fix a section mismatch
leds: add the sysfs interface into the leds-bd2802 driver for changing wave pattern and led current.
leds: change the license information
leds: fix led-bd2802 errors while resuming
KVM: shut up uninit compiler warning in paging_tmpl.h
Dixes compilation warning:
CC arch/x86/kernel/io_delay.o
arch/x86/kvm/paging_tmpl.h: In function ‘paging64_fetch’:
arch/x86/kvm/paging_tmpl.h:279: warning: ‘sptep’ may be used uninitialized in this function
arch/x86/kvm/paging_tmpl.h: In function ‘paging32_fetch’:
arch/x86/kvm/paging_tmpl.h:279: warning: ‘sptep’ may be used uninitialized in this function
warning is bogus (always have a least one level), but need to shut the compiler
up.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2.6.31-rc introduced an architecture level set checker based on facility
bits. e.g. if the kernel is compiled to run only on z9, several facility
bits are checked very early and the kernel refuses to boot if a z9 specific
facility is missing.
Until now kvm on s390 did not implement the store facility extended (STFLE)
instruction. A 2.6.31-rc kernel that was compiled for z9 or higher did not
boot in kvm. This patch implements stfle.
This patch should go in before 2.6.31.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
When this lock was converted to a mutex, the locks were turned into
unlocks and vice-versa.
Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
Linus Torvalds [Fri, 26 Jun 2009 16:39:40 +0000 (09:39 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
amd64_edac: misc small cleanups
amd64_edac: fix ecc_enable_override handling
amd64_edac: check only ECC bit in amd64_determine_edac_cap
Linus Torvalds [Fri, 26 Jun 2009 16:39:02 +0000 (09:39 -0700)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (29 commits)
powerpc/rtas: Fix watchdog driver temperature read functionality
powerpc/mm: Fix potential access to freed pages when using hugetlbfs
powerpc/440: Fix warning early debug code
powerpc/of: Fix usage of dev_set_name() in of_device_alloc()
powerpc/pasemi: Use raw spinlock in SMP TB sync
powerpc: Use one common impl. of RTAS timebase sync and use raw spinlock
powerpc/rtas: Turn rtas lock into a raw spinlock
powerpc: Add irqtrace support for 32-bit powerpc
powerpc/BSR: Fix BSR to allow mmap of small BSR on 64k kernel
powerpc/BSR: add 4096 byte BSR size
powerpc: Map more memory early on 601 processors
powerpc/pmac: Fix DMA ops for MacIO devices
powerpc/mm: Make k(un)map_atomic out of line
powerpc: Fix mpic alloc warning
powerpc: Fix output from show_regs
powerpc/pmac: Fix issues with PowerMac "PowerSurge" SMP
powerpc/amigaone: Limit ISA I/O range to 4k in the device tree
powerpc/warp: Platform fix for i2c change
powerpc: Have git ignore generated files from dtc compile
powerpc/mpic: Fix mapping of "DCR" based MPIC variants
...
Linus Torvalds [Fri, 26 Jun 2009 16:37:52 +0000 (09:37 -0700)]
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI: video: prevent NULL deref in acpi_get_pci_dev()
eeepc-laptop: add rfkill support for the 3G modem in Eee PC 901 Go
eeepc-laptop: get the right value for CMSG
eeepc-laptop: makes get_acpi() returns -ENODEV
eeepc-laptop: right parent device
eeepc-laptop: rfkill refactoring
eeepc-laptop.c: use pr_fmt and pr_<level>
eeepc-laptop: Register as a pci-hotplug device
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
[CIFS] remove unknown mount option warning message
[CIFS] remove bkl usage from umount begin
cifs: Fix incorrect return code being printed in cFYI messages
[CIFS] cleanup asn handling for ntlmssp
[CIFS] Copy struct *after* setting the port, instead of before.
cifs: remove rw/ro options
cifs: fix problems with earlier patches
cifs: have cifs parse scope_id out of IPv6 addresses and use it
[CIFS] Do not send tree disconnect if session is already disconnected
[CIFS] Fix build break
cifs: display scopeid in /proc/mounts
cifs: add new routine for converting AF_INET and AF_INET6 addrs
cifs: have cifs_show_options show forceuid/forcegid options
cifs: remove unneeded NULL checks from cifs_show_options
Borislav Petkov [Mon, 22 Jun 2009 17:42:24 +0000 (19:42 +0200)]
amd64_edac: fix ecc_enable_override handling
amd64_check_ecc_enabled() returns non-zero status when ECC
checking/correcting is disabled and this fails further loading of the
driver even when 'ecc_enable_override' boot param is used.
Borislav Petkov [Wed, 10 Jun 2009 16:29:54 +0000 (18:29 +0200)]
amd64_edac: check only ECC bit in amd64_determine_edac_cap
Checking whether the machine is using ECC enabled DRAM is done through
testing the DimmEccEn bit in the DRAM Cfg Low register (F2x[1,0]90). Do
that instead of testing all bits from the DimmEccEn upwards.
Also, remove mci->edac_cap assignment and use value returned from
amd64_determine_edac_cap().
Adrian Reber [Thu, 26 Mar 2009 02:05:42 +0000 (02:05 +0000)]
powerpc/rtas: Fix watchdog driver temperature read functionality
Using the RTAS watchdog driver to read out the temperature crashes
on a PXCAB:
Unable to handle kernel paging request for data at address 0xfe347b50
Faulting instruction address: 0xc00000000001af64
Oops: Kernel access of bad area, sig: 11 [#1]
The wrong usage of "(void *)__pa(&temperature)" in rtas_call() is
removed by using the function rtas_get_sensor() which does the
right thing.
Signed-off-by: Adrian Reber <adrian@lisas.de> Acked-by: Utz Bacher <utz.bacher@de.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc/mm: Fix potential access to freed pages when using hugetlbfs
When using 64k page sizes, our PTE pages are split in two halves,
the second half containing the "extension" used to keep track of
individual 4k pages when not using HW 64k pages.
However, our page tables used for hugetlb have a slightly different
format and don't carry that "second half".
Our code that batched PTEs to be invalidated unconditionally reads
the "second half" (to put it into the batch), which means that when
called to invalidate hugetlb PTEs, it will access unrelated memory.
It breaks when CONFIG_DEBUG_PAGEALLOC is enabled.
This fixes it by only accessing the second half when the _PAGE_COMBO
bit is set in the first half, which indicates that we are dealing with
a "combo" page which represents 16x4k subpages. Anything else shouldn't
have this bit set and thus not require loading from the second half.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc: Use one common impl. of RTAS timebase sync and use raw spinlock
Several platforms use their own copy of what is essentially the same code,
using RTAS to synchronize the timebases when bringing up new CPUs. This
moves it all into a single common implementation and additionally
turns the spinlock into a raw spinlock since the former can rely on
the timebase not being frozen when spinlock debugging is enabled, and finally
masks interrupts while the timebase is disabled.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
RTAS currently uses a normal spinlock. However it can be called from
contexts where this is not necessarily a good idea. For example, it
can be called while syncing timebases, with the core timebase being
frozen. Unfortunately, that will deadlock in case of lock contention
when spinlock debugging is enabled as the spin lock debugging code
will try to use __delay() which ... relies on the timebase being
enabled.
Also RTAS can be used in some low level IRQ handling code path so it
may as well be a raw spinlock for -rt sake.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Based on initial work from: Dale Farnsworth <dale@farnsworth.org>
Add the low level irq tracing hooks for 32-bit powerpc needed
to enable full lockdep functionality.
The approach taken to deal with the code in entry_32.S is that
we don't trace all the transitions of MSR:EE when we just turn
it off to peek at TI_FLAGS without races. Only when we are
calling into C code or returning from exceptions with a state
that have changed from what lockdep thinks.
There's a little bugger though: If we take an exception that
keeps interrupts enabled (such as an alignment exception) while
interrupts are enabled, we will call trace_hardirqs_on() on the
way back spurriously. Not a big deal, but to get rid of it would
require remembering in pt_regs that the exception was one of the
type that kept interrupts enabled which we don't know at this
stage. (Well, we could test all cases for regs->trap but that
sucks too much).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Tested-by: Kumar Gala <galak@kernel.crashing.org>
Sonny Rao [Thu, 18 Jun 2009 15:13:04 +0000 (15:13 +0000)]
powerpc/BSR: Fix BSR to allow mmap of small BSR on 64k kernel
On Mon, Nov 17, 2008 at 01:26:13AM -0600, Sonny Rao wrote:
> On Fri, Nov 07, 2008 at 04:28:29PM +1100, Paul Mackerras wrote:
> > Sonny Rao writes:
> >
> > > Fix the BSR driver to allow small BSR devices, which are limited to a
> > > single 4k space, on a 64k page kernel. Previously the driver would
> > > reject the mmap since the size was smaller than PAGESIZE (or because
> > > the size was greater than the size of the device). Now, we check for
> > > this case use remap_4k_pfn(). Also, take out code to set vm_flags,
> > > as the remap_pfn functions will do this for us.
> >
> > Thanks.
> >
> > Do we know that the BSR size will always be 4k if it's not a multiple
> > of 64k? Is it possible that we could get 8k, 16k or 32k or BSRs?
> > If it is possible, what does the user need to be able to do? Do they
> > just want to map 4k, or might then want to map the whole thing?
>
>
> Hi Paul, I took a look at changing the driver to reject a request for
> mapping more than a single 4k page, however the only indication we get
> of the requested size in the mmap function is the vma size, and this
> is always one page at minimum. So, it's not possible to determine if
> the user wants one 4k page or more. As I noted in my first response,
> there is only one case where this is even possible and I don't think
> it is a significant concern.
>
> I did notice that I left out the check to see if the user is trying to
> map more than the device length, so I fixed that. Here's the revised
> patch.
Alright, I've reworked this now so that if we get one of these cases
where there's a bsr that's > 4k and < 64k on a 64k kernel we'll only
advertise that it is a 4k BSR to userspace. I think this is the best
solution since user programs are only supposed to look at sysfs to
determine how much can be mapped, and libbsr does this as well.
Please consider for 2.6.31 as a fix, thanks.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Sonny Rao [Thu, 18 Jun 2009 15:14:36 +0000 (15:14 +0000)]
powerpc/BSR: add 4096 byte BSR size
Add a 4096 byte BSR size which will be used on new machines. Also, remove
the warning when we run into an unknown size, as this can spam the kernel
log excessively.
Signed-off-by: Sonny Rao <sonnyrao@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The 32-bit kernel relies on some memory being mapped covering
the kernel text,data and bss at least, early during boot before
the full MMU setup is done. On 32-bit "classic" processors, this
is done using BAT registers.
On 601, the size of BATs is limited to 8M and we use 2 of them
for that initial mapping. This can become quite tight when enabling
features like lockdep, so let's use a 3rd one to bump that mapping
from 16M to 24M. We keep the 4th BAT free as it can be useful for
debugging early boot code to map things like serial ports.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The macio_dev's created to map devices inside the MacIO ASICs
don't have proper dma_ops. This causes crashes on some machines
since the SCSI code calls dma_map_* on our behalf using the
device we hang from.
This fixes it by copying the parent PCI device dma_ops into
the macio_dev when creating it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Those functions are way too big to be inline, besides, kmap_atomic()
wants to call debug_kmap_atomic() which isn't exported for modules
and causes module link failures.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Kumar Gala [Thu, 18 Jun 2009 22:01:20 +0000 (22:01 +0000)]
powerpc: Fix mpic alloc warning
Since we can use kmalloc earlier we are getting the following since the
mpic_alloc() code calls alloc_bootmem(). Move to using kzalloc() to
remove the warning.
powerpc/pmac: Fix issues with PowerMac "PowerSurge" SMP
The old PowerSurge SMP (ie, dual or quad 604 machines) code has
numerous issues in modern world.
One is cpu_possible_map is set too late (the device-tree is bogus)
so we fail to allocate the interrupt stacks and crash. Another
problem is the fact the timebase is frozen by the bringup of the
second CPU so the delays in the generic code will hang, we need
to move some of the calling procedure to inside the powermac code.
This makes it boot again for me
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Gerhard Pircher [Fri, 19 Jun 2009 11:42:36 +0000 (11:42 +0000)]
powerpc/amigaone: Limit ISA I/O range to 4k in the device tree
The kernel reserves the I/O address space from 0x0 to 0xfff for legacy
ISA devices. Change the ranges property for the PCI2ISA bridge to match
the kernels behavior, even if the ranges property isn't used for now.
Signed-off-by: Gerhard Pircher <gerhard_pircher@gmx.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Sean MacLennan [Fri, 19 Jun 2009 19:43:59 +0000 (19:43 +0000)]
powerpc/warp: Platform fix for i2c change
A change to the i2c subsystem breaks the warp platform code. The patch
is cleaner anyway, the old way was a bit crufty.
For those with keen eyes, the gratuitous change in the string from
PIKA to Warp is just so the logs look a bit nicer. The following two
lines tend to be printed one after another.
Warp POST OK
Warp DTM thread running.
Yeah, this will be the third patch to warp.c submitted in this
release....
Cheers,
Sean
The i2c_client struct changed, breaking the code that looked for the ad7414
chip. Use the new of_find_i2c_device_by_node function added in 2.6.29.
Signed-off-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Jon Smirl [Sun, 21 Jun 2009 15:28:00 +0000 (15:28 +0000)]
powerpc: Have git ignore generated files from dtc compile
Have git ignore generated files from dtc compile
Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc/mpic: Fix mapping of "DCR" based MPIC variants
Commit 31207dab7d2e63795eb15823947bd2f7025b08e2
"Fix incorrect allocation of interrupt rev-map"
introduced a regression crashing on boot on machines using
a "DCR" based MPIC, such as the Cell blades.
The reason is that the irq host data structure is initialized
much later as a result of that patch, causing our calls to
mpic_map() do be done before we have a host setup.
Unfortunately, this breaks _mpic_map_dcr() which uses the
mpic->irqhost to get to the device node.
This fixes it by, instead, passing the device node explicitely
to mpic_map().
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Akira Tsukamoto <akirat@rd.scei.sony.co.jp>
Michael Ellerman [Mon, 22 Jun 2009 23:13:48 +0000 (23:13 +0000)]
powerpc: Swiotlb breaks pseries
Turning on SWIOTLB selects or enables PPC_NEED_DMA_SYNC_OPS, which means
we get the non empty versions of dma_sync_* in asm/dma-mapping.h
On my pseries machine the dma_ops have no such routines and we die with
a null pointer - this patch gets it booting, is there a more elegant way
to do it?
Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
When the ACPI video driver initializes, it does a namespace walk
looking for for supported devices. When we find an appropriate
handle, we walk up the ACPI tree looking for a PCI root bus, and
then walk back down the PCI bus, assuming that every device
inbetween is a P2P bridge.
This assumption is not correct, and is reported broken on at
least:
Dell Latitude E6400
ThinkPad X61
Dell XPS M1330
Add a NULL deref check to prevent boot panics.
Reported-by: Alessandro Suardi <alessandro.suardi@gmail.com> Signed-off-by: Troy Moure <twmoure@szypr.net> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
Corentin Chary [Thu, 25 Jun 2009 11:25:36 +0000 (13:25 +0200)]
eeepc-laptop: Register as a pci-hotplug device
The eee contains a logically (but not physically) hotpluggable PCIe slot.
Currently this is handled by adding or removing the PCI device in response
to rfkill events, but if a user has forced pciehp to bind to it (with the
force=1 argument) then both drivers will try to handle the event and
hilarity (in the form of oopses) will ensue. This can be avoided by having
eee-laptop register the slot as a hotplug slot. Only one of pciehp and
eee-laptop will successfully register this, avoiding the problem.
Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Corentin Chary <corentincj@iksaif.net> Tested-by: Darren Salt <linux@youmustbejoking.demon.co.uk> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Len Brown <len.brown@intel.com>
Steve French [Fri, 26 Jun 2009 04:07:18 +0000 (04:07 +0000)]
[CIFS] remove unknown mount option warning message
Jeff's previous patch which removed the unneeded rw/ro
parsing can cause a minor warning in dmesg (about the
unknown rw or ro mount option) at mount time. This
patch makes cifs ignore them in kernel to remove the warning
(they are already handled in the mount helper and VFS).
Steve French [Fri, 26 Jun 2009 03:25:49 +0000 (03:25 +0000)]
[CIFS] remove bkl usage from umount begin
The lock_kernel call moved into the fs for umount_begin
is not needed. This adds a check to make sure we don't
call umount_begin twice on the same fs.
umount_begin for cifs is probably not needed and
may eventually be able to be removed, but in
the meantime this smaller patch is safe and
gets rid of the bkl from this path which provides
some benefit.
Acked-by: Jeff Layton <redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Julian Calaby [Tue, 23 Jun 2009 01:45:46 +0000 (01:45 +0000)]
sparc32: Fix makefile not generating required files
The tftpboot build was failing with missing file errors.
It turns out that $(obj)/image wasn't being generated which was causing the a.out conversion to be skipped and hence piggyback to be called with nonexistent files.
Signed-off-by: Julian Calaby <julian.calaby@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Kjetil Oftedal <oftedal@gmail.com> Cc: Robert Reif <reif@earthlink.net> Signed-off-by: Julian Calaby <julian.calaby@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Julian Calaby [Sun, 21 Jun 2009 16:44:13 +0000 (16:44 +0000)]
sparc64: Fix build warnings in piggyback_64.c
This patch fixes the following build warnings:
arch/sparc/boot/piggyback_64.c: In function 'main':
arch/sparc/boot/piggyback_64.c:44: warning: 'end' may be used uninitialized in this function
arch/sparc/boot/piggyback_64.c:44: warning: 'start' may be used uninitialized in this function
Signed-off-by: Julian Calaby <julian.calaby@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 26 Jun 2009 00:04:37 +0000 (17:04 -0700)]
Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (28 commits)
drm: remove unused #include <linux/version.h>'s
drm/radeon: fix driver initialization order so radeon kms can be builtin
drm: Fix shifts which were miscalculated when converting from bitfields.
drm/radeon: Clear surface registers at initialization time.
drm/radeon: Don't initialize acceleration related fields of struct fb_info.
drm/radeon: fix radeon kms framebuffer device
drm/i915: initialize fence registers to zero when loading GEM
drm/i915: Fix HDMI regression introduced in new chipset support
drm/i915: fix LFP data fetch
drm/i915: set TV detection mode when tv is already connected
drm/i915: Catch up to obj_priv->page_list rename in disabled debug code.
drm/i915: Fix size_t handling in off-by-default debug printfs
drm/i915: Don't change the blank/sync width when calculating scaled modes
drm/i915: Add support for changing LVDS panel fitting using an output property.
drm/i915: correct suspend/resume ordering
drm/i915: Add missing dependency on Intel AGP support.
drm/i915: Generate 2MHz clock for display port aux channel I/O. Retry I/O.
drm/i915: Clarify error returns from display port aux channel I/O
drm/i915: Add CLKCFG register definition
drm/i915: Split array of DAC limits into separate structures.
...
H. Peter Anvin [Thu, 25 Jun 2009 22:16:06 +0000 (15:16 -0700)]
x86, setup: correct include file in <asm/boot.h>
<asm/boot.h> needs <asm/pgtable_types.h>, not <asm/page_types.h> in
order to resolve PMD_SHIFT. Also, correct a +1 which really should be
+ THREAD_ORDER.
This is a build error which was masked by a typoed #ifdef.
Robert P. J. Day [Thu, 25 Jun 2009 20:20:48 +0000 (16:20 -0400)]
x86, setup: Fix typo "CONFIG_x86_64" in <asm/boot.h>
CONFIG_X86_64 was misspelled (wrong case), which caused the x86-64
kernel to advertise itself as more relocatable than it really is.
This could in theory cause boot failures once bootloaders start
support the new relocation fields.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Hidetoshi Seto [Wed, 24 Jun 2009 00:21:10 +0000 (09:21 +0900)]
x86, mce: percpu mcheck_timer should be pinned
If CONFIG_NO_HZ + CONFIG_SMP, timer added via add_timer() might
be migrated on other cpu. Use add_timer_on() instead.
Avoids the following failure:
Maciej Rutecki wrote:
> > After normal boot I try:
> >
> > echo 1 > /sys/devices/system/machinecheck/machinecheck0/check_interval
> >
> > I found this in dmesg:
> >
> > [ 141.704025] ------------[ cut here ]------------
> > [ 141.704039] WARNING: at arch/x86/kernel/cpu/mcheck/mce.c:1102
> > mcheck_timer+0xf5/0x100()
Reported-by: Maciej Rutecki <maciej.rutecki@gmail.com> Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Tested-by: Maciej Rutecki <maciej.rutecki@gmail.com> Acked-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Kurt Garloff [Wed, 24 Jun 2009 21:32:11 +0000 (14:32 -0700)]
x86: Add sysctl to allow panic on IOCK NMI error
This patch introduces a new sysctl:
/proc/sys/kernel/panic_on_io_nmi
which defaults to 0 (off).
When enabled, the kernel panics when the kernel receives an NMI
caused by an IO error.
The IO error triggered NMI indicates a serious system
condition, which could result in IO data corruption. Rather
than contiuing, panicing and dumping might be a better choice,
so one can figure out what's causing the IO error.
This could be especially important to companies running IO
intensive applications where corruption must be avoided, e.g. a
bank's databases.
[ SuSE has been shipping it for a while, it was done at the
request of a large database vendor, for their users. ]
Suresh Jayaraman [Thu, 25 Jun 2009 12:42:34 +0000 (18:12 +0530)]
cifs: Fix incorrect return code being printed in cFYI messages
FreeXid() along with freeing Xid does add a cifsFYI debug message that
prints rc (return code) as well. In some code paths where we set/return
error code after calling FreeXid(), incorrect error code is being
printed when cifsFYI is enabled.
This could be misleading in few cases. For eg.
In cifs_open() if cifs_fill_filedata() returns a valid pointer to
cifsFileInfo, FreeXid() prints rc=-13 whereas 0 is actually being
returned. Fix this by setting rc before calling FreeXid().
[Note that Christoph would like to replace the GetXid/FreeXid
calls, which are primarily used for debugging. This seems
like a good longer term goal, but although there is an
alternative tracing facility, there are no examples yet
available that I know of that we can use (yet) to
convert this cifs function entry/exit logging, and for
creating an identifier that we can use to correlate
all dmesg log entries for a particular vfs operation
(ie identify all log entries for a particular vfs
request to cifs: e.g. a particular close or read or write
or byte range lock call ... and just using the thread id
is harder). Eventually when a replacement
for this is available (e.g. when NFS switches over and various
samples to look at in other file systems) we can remove the
GetXid/FreeXid macro but in the meantime multiple people
use this run time configurable logging all the time
for debugging, and Suresh's patch fixes a problem
which made it harder to notice some low
memory problems in the log so it is worthwhile
to fix this problem until a better logging
approach is able to be used]
Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
usb_serial: Fix oops when unexisting usb serial device is opened.
This commit 335f8514f200e63d689113d29cb7253a5c282967 has stopped
properly checking if there is any usb serial associated with the tty in
the close function. It happens the close function is called by releasing
the terminal right after opening the device fails.
As an example, open fails with a non-existing device, when probe has
never been called, because the device has never been plugged. This is
common in systems with static modules and no udev.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
acm: Fix oops when closing ACM tty device right after open has failed.
This commit 10077d4a6674f535abdbe25cdecb1202af7948f1 has stopped
checking if there was a valid acm device associated to the tty, which is
not true right after open fails and tty subsystem tries to close the
device.
As an example, open fails with a non-existing device, when probe has
never been called, because the device has never been plugged. This is
common in systems with static modules and no udev.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
acm: Return ENODEV instead of EINVAL when trying to open ACM device.
This is required, otherwise a user will get a EINVAL while opening a
non-existing device, instead of ENODEV.
This is what I get with this patch applied now instead of an "Invalid
argument".
cascardo@vespa:~$ cat /dev/ttyACM0
cat: /dev/ttyACM0: No such device
cascardo@vespa:~$
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Menage [Thu, 25 Jun 2009 07:17:15 +0000 (00:17 -0700)]
UML: Fix some apparent bitrot
UML: Fix some apparent bitrot
- migration of net_device methods into net_device_ops
- dma_sync_single() changes
Signed-off-by: Paul Menage <menage@google.com> Acked-by: Amerigo Wang <xiyou.wangcong@gmail.com>
--
This version is split from my earlier patch, including just the
portions that ar required for Linus' tree.
Fixes the following compile errors:
include/linux/dma-mapping.h:113: error: redefinition of 'dma_sync_single'
arch/um/include/asm/dma-mapping.h:84: error: previous definition of 'dma_sync_single' was here
include/linux/dma-mapping.h: In function 'dma_sync_single':
include/linux/dma-mapping.h:117: error: implicit declaration of function 'dma_sync_single_for_cpu'
include/linux/dma-mapping.h: At top level:
include/linux/dma-mapping.h:120: error: redefinition of 'dma_sync_sg'
arch/um/include/asm/dma-mapping.h:91: error: previous definition of 'dma_sync_sg' was here
include/linux/dma-mapping.h: In function 'dma_sync_sg':
include/linux/dma-mapping.h:124: error: implicit declaration of function 'dma_sync_sg_for_cpu'
arch/um/drivers/slirp_kern.c: In function 'slirp_init':
arch/um/drivers/slirp_kern.c:35: error: 'struct net_device' has no member named 'init' Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ingo Molnar [Thu, 25 Jun 2009 06:27:14 +0000 (08:27 +0200)]
i2c: fix build bug in i2c-designware.c
This build error triggers on x86:
drivers/built-in.o: In function `i2c_dw_init':
i2c-designware.c:(.text+0x4e37ca): undefined reference to `clk_get_rate'
drivers/built-in.o: In function `dw_i2c_probe':
i2c-designware.c:(.devinit.text+0x51f5e): undefined reference to `clk_get'
i2c-designware.c:(.devinit.text+0x51f76): undefined reference to `clk_enable'
i2c-designware.c:(.devinit.text+0x520ff): undefined reference to `clk_disable'
i2c-designware.c:(.devinit.text+0x52108): undefined reference to `clk_put'
Because this new driver uses the clk_*() facilities which is an
ARM-only thing currently.
Thomas Gleixner [Thu, 25 Jun 2009 12:27:58 +0000 (14:27 +0200)]
futex: request only one page from get_user_pages()
Yanmin noticed that fault_in_user_writeable() requests 4 pages instead
of one.
That's the result of blindly trusting Linus' proposal :) I even looked
up the prototype to verify the correctness: the argument in question
is confusingly enough named "len" while in reality it means number of
pages.
Pointed-out-by: Yanmin Zhang <yanmin_zhang@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Paul Mundt [Thu, 25 Jun 2009 05:30:12 +0000 (14:30 +0900)]
ring-buffer: Make it generally available
In hunting down the cause for the hwlat_detector ring buffer spew in
my failed -next builds it became obvious that folks are now treating
ring_buffer as something that is generic independent of tracing and thus,
suitable for public driver consumption.
Given that there are only a few minor areas in ring_buffer that have any
reliance on CONFIG_TRACING or CONFIG_FUNCTION_TRACER, provide stubs for
those and make it generally available.
Signed-off-by: Paul Mundt <lethal@linux-sh.org> Cc: Jon Masters <jcm@jonmasters.org> Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20090625053012.GB19944@linux-sh.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Steve French [Thu, 25 Jun 2009 03:04:20 +0000 (03:04 +0000)]
[CIFS] cleanup asn handling for ntlmssp
Also removes obsolete distinction between rawntlmssp and ntlmssp (in asn/SPNEGO)
since as jra noted we can always send raw ntlmssp in session setup now.
remove check for experimental runtime flag (/proc/fs/cifs/Experimental) in
ntlmssp path.
Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Jeff Layton [Thu, 11 Jun 2009 14:27:31 +0000 (10:27 -0400)]
cifs: have cifs parse scope_id out of IPv6 addresses and use it
This patch has CIFS look for a '%' in an IPv6 address. If one is
present then it will try to treat that value as a numeric interface
index suitable for stuffing into the sin6_scope_id field.
This should allow people to mount servers on IPv6 link-local addresses.
Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: David Holder <david@erion.co.uk> Signed-off-by: Steve French <sfrench@us.ibm.com>
Steve French [Thu, 25 Jun 2009 00:29:21 +0000 (00:29 +0000)]
[CIFS] Do not send tree disconnect if session is already disconnected
Noticed this when tree connect timed out (due to Samba server crash) -
we try to send a tree disconnect for a tid that does not exist
since we don't have a valid tree id yet. This checks that the
session is valid before sending the tree disconnect to handle
this case.
Linus Torvalds [Wed, 24 Jun 2009 21:35:57 +0000 (14:35 -0700)]
Merge git://git.infradead.org/battery-2.6
* git://git.infradead.org/battery-2.6:
da9030_battery: Fix race between event handler and monitor
Add MAX17040 Fuel Gauge driver
w1: ds2760_battery: add support for sleep mode feature
w1: ds2760: add support for EEPROM read and write
ds2760_battery: cleanups in ds2760_battery_probe()
Linus Torvalds [Wed, 24 Jun 2009 21:17:14 +0000 (14:17 -0700)]
Merge branches 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/{vfs-2.6,audit-current}
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
another race fix in jfs_check_acl()
Get "no acls for this inode" right, fix shmem breakage
inline functions left without protection of ifdef (acl)
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
audit: inode watches depend on CONFIG_AUDIT not CONFIG_AUDIT_SYSCALL
Eric Paris [Wed, 24 Jun 2009 20:09:01 +0000 (16:09 -0400)]
audit: inode watches depend on CONFIG_AUDIT not CONFIG_AUDIT_SYSCALL
Even though one cannot make use of the audit watch code without
CONFIG_AUDIT_SYSCALL the spaghetti nature of the audit code means that
the audit rule filtering requires that it at least be compiled.
Thomas Gleixner [Thu, 11 Jun 2009 21:15:43 +0000 (23:15 +0200)]
futex: Fix the write access fault problem for real
commit 64d1304a64 (futex: setup writeable mapping for futex ops which
modify user space data) did address only half of the problem of write
access faults.
The patch was made on two wrong assumptions:
1) access_ok(VERIFY_WRITE,...) would actually check write access.
On x86 it does _NOT_. It's a pure address range check.
2) a RW mapped region can not go away under us.
That's wrong as well. Nobody can prevent another thread to call
mprotect(PROT_READ) on that region where the futex resides. If that
call hits between the get_user_pages_fast() verification and the
actual write access in the atomic region we are toast again.
The solution is to not rely on access_ok and get_user() for any write
access related fault on private and shared futexes. Instead we need to
fault it in with verification of write access.
There is no generic non destructive write mechanism which would fault
the user page in trough a #PF, but as we already know that we will
fault we can as well call get_user_pages() directly and avoid the #PF
overhead.
If get_user_pages() returns -EFAULT we know that we can not fix it
anymore and need to bail out to user space.
Remove a bunch of confusing comments on this issue as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@kernel.org
projects / linux-beck.git / log