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Jeremy Fitzhardinge [Sat, 31 May 2008 00:33:04 +0000 (01:33 +0100)]
xen: add new Xen elfnote types and use them appropriately
Define recently added XEN_ELFNOTEs, and use them appropriately.
Most significantly, this enables domain checkpointing (xm save -c).
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jeremy Fitzhardinge [Sat, 31 May 2008 00:33:03 +0000 (01:33 +0100)]
xen: resume timers on all vcpus
On resume, the vcpu timer modes will not be restored. The timer
infrastructure doesn't do this for us, since it assumes the cpus
are offline. We can just poke the other vcpus into the right mode
directly though.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jeremy Fitzhardinge [Sat, 31 May 2008 00:33:02 +0000 (01:33 +0100)]
xen: restore vcpu_info mapping
If we're using vcpu_info mapping, then make sure its restored on all
processors before relasing them from stop_machine.
The only complication is that if this fails, we can't continue because
we've already made assumptions that the mapping is available (baked in
calls to the _direct versions of the functions, for example).
Fortunately this can only happen with a 32-bit hypervisor, which may
possibly run out of mapping space. On a 64-bit hypervisor, this is a
non-issue.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jeremy Fitzhardinge [Sat, 31 May 2008 00:24:27 +0000 (01:24 +0100)]
xen: avoid hypercalls when updating unpinned pud/pmd
When operating on an unpinned pagetable (ie, one under construction or
destruction), it isn't necessary to use a hypercall to update a
pud/pmd entry. Jan Beulich observed that a similar optimisation
avoided many thousands of hypercalls while doing a kernel build.
One tricky part is that early in the kernel boot there's no page
structure, so we can't check to see if the page is pinned. In that
case, we just always use the hypercall.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Mon, 2 Jun 2008 11:20:11 +0000 (13:20 +0200)]
xen: export get_phys_to_machine
-tip testing found the following xen-console symbols trouble:
ERROR: "get_phys_to_machine" [drivers/video/xen-fbfront.ko] undefined!
ERROR: "get_phys_to_machine" [drivers/net/xen-netfront.ko] undefined!
ERROR: "get_phys_to_machine" [drivers/input/xen-kbdfront.ko] undefined!
with:
http://redhat.com/~mingo/misc/config-Mon_Jun__2_12_25_13_CEST_2008.bad
Jeremy Fitzhardinge [Thu, 29 May 2008 08:02:19 +0000 (09:02 +0100)]
CONFIG_PM_SLEEP fix: xen: fix compilation when CONFIG_PM_SLEEP is disabled
Xen save/restore depends on CONFIG_PM_SLEEP being set for device_power_up/down.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Thu, 29 May 2008 07:31:50 +0000 (09:31 +0200)]
xen: fix "xen: implement save/restore"
-tip testing found the following build breakage:
drivers/built-in.o: In function `xen_suspend':
manage.c:(.text+0x4390f): undefined reference to `xen_console_resume'
with this config:
http://redhat.com/~mingo/misc/config-Thu_May_29_09_23_16_CEST_2008.bad
i have bisected it down to:
| commit
0e91398f2a5d4eb6b07df8115917d0d1cf3e9b58
| Author: Jeremy Fitzhardinge <jeremy@goop.org>
| Date: Mon May 26 23:31:27 2008 +0100
|
| xen: implement save/restore
the problem is that drivers/xen/manage.c is built unconditionally if
CONFIG_XEN is enabled and makes use of xen_suspend(), but
drivers/char/hvc_xen.c, where the xen_suspend() method is implemented,
is only build if CONFIG_HVC_XEN=y as well.
i have solved this by providing a NOP implementation for xen_suspend()
in the !CONFIG_HVC_XEN case.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Wed, 28 May 2008 12:24:38 +0000 (14:24 +0200)]
xen: fix early bootup crash on native hardware
-tip tree auto-testing found the following early bootup hang:
-------------->
get_memcfg_from_srat: assigning address to rsdp
RSD PTR v0 [Nvidia]
BUG: Int 14: CR2
ffd00040
EDI
8092fbfe ESI
ffd00040 EBP
80b0aee8 ESP
80b0aed0
EBX
000f76f0 EDX
0000000e ECX
00000003 EAX
ffd00040
err
00000000 EIP
802c055a CS
00000060 flg
00010006
Stack:
ffd00040 80bc78d0 80b0af6c 80b1dbfe 8093d8ba 00000008 80b42810 80b4ddb4
80b42842 00000000 80b0af1c 801079c8 808e724e 00000000 80b42871 802c0531
00000100 00000000 0003fff0 80b0af40 80129999 00040100 00040100 00000000
Pid: 0, comm: swapper Not tainted 2.6.26-rc4-sched-devel.git #570
[<
802c055a>] ? strncmp+0x11/0x25
[<
80b1dbfe>] ? get_memcfg_from_srat+0xb4/0x568
[<
801079c8>] ? mcount_call+0x5/0x9
[<
802c0531>] ? strcmp+0xa/0x22
[<
80129999>] ? printk+0x38/0x3a
[<
80129999>] ? printk+0x38/0x3a
[<
8011b122>] ? memory_present+0x66/0x6f
[<
80b216b4>] ? setup_memory+0x13/0x40c
[<
80b16b47>] ? propagate_e820_map+0x80/0x97
[<
80b1622a>] ? setup_arch+0x248/0x477
[<
80129999>] ? printk+0x38/0x3a
[<
80b11759>] ? start_kernel+0x6e/0x2eb
[<
80b110fc>] ? i386_start_kernel+0xeb/0xf2
=======================
<------
with this config:
http://redhat.com/~mingo/misc/config-Wed_May_28_01_33_33_CEST_2008.bad
The thing is, the crash makes little sense at first sight. We crash on a
benign-looking printk. The code around it got changed in -tip but
checking those topic branches individually did not reproduce the bug.
Bisection led to this commit:
|
d5edbc1f75420935b1ec7e65df10c8f81cea82de is first bad commit
| commit
d5edbc1f75420935b1ec7e65df10c8f81cea82de
| Author: Jeremy Fitzhardinge <jeremy@goop.org>
| Date: Mon May 26 23:31:22 2008 +0100
|
| xen: add p2m mfn_list_list
Which is somewhat surprising, as on native hardware Xen client side
should have little to no side-effects.
After some head scratching, it turns out the following happened:
randconfig enabled the following Xen options:
CONFIG_XEN=y
CONFIG_XEN_MAX_DOMAIN_MEMORY=8
# CONFIG_XEN_BLKDEV_FRONTEND is not set
# CONFIG_XEN_NETDEV_FRONTEND is not set
CONFIG_HVC_XEN=y
# CONFIG_XEN_BALLOON is not set
which activated this piece of code in arch/x86/xen/mmu.c:
> @@ -69,6 +69,13 @@
> __attribute__((section(".data.page_aligned"))) =
> { [ 0 ... TOP_ENTRIES - 1] = &p2m_missing[0] };
>
> +/* Arrays of p2m arrays expressed in mfns used for save/restore */
> +static unsigned long p2m_top_mfn[TOP_ENTRIES]
> + __attribute__((section(".bss.page_aligned")));
> +
> +static unsigned long p2m_top_mfn_list[TOP_ENTRIES / P2M_ENTRIES_PER_PAGE]
> + __attribute__((section(".bss.page_aligned")));
The problem is, you must only put variables into .bss.page_aligned that
have a _size_ that is _exactly_ page aligned. In this case the size of
p2m_top_mfn_list is not page aligned:
80b8d000 b p2m_top_mfn
80b8f000 b p2m_top_mfn_list
80b8f008 b softirq_stack
80b97008 b hardirq_stack
80b9f008 b bm_pte
So all subsequent variables get unaligned which, depending on luck,
breaks the kernel in various funny ways. In this case what killed the
kernel first was the misaligned bootmap pte page, resulting in that
creative crash above.
Anyway, this was a fun bug to track down :-)
I think the moral is that .bss.page_aligned is a dangerous construct in
its current form, and the symptoms of breakage are very non-trivial, so
i think we need build-time checks to make sure all symbols in
.bss.page_aligned are truly page aligned.
The Xen fix below gets the kernel booting again.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:28 +0000 (23:31 +0100)]
xen: maintain clock offset over save/restore
Hook into the device model to make sure that timekeeping's resume handler
is called. This deals with our clocksource's non-monotonicity over the
save/restore. Explicitly call clock_has_changed() to make sure that
all the timers get retriggered properly.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:27 +0000 (23:31 +0100)]
xen: implement save/restore
This patch implements Xen save/restore and migration.
Saving is triggered via xenbus, which is polled in
drivers/xen/manage.c. When a suspend request comes in, the kernel
prepares itself for saving by:
1 - Freeze all processes. This is primarily to prevent any
partially-completed pagetable updates from confusing the suspend
process. If CONFIG_PREEMPT isn't defined, then this isn't necessary.
2 - Suspend xenbus and other devices
3 - Stop_machine, to make sure all the other vcpus are quiescent. The
Xen tools require the domain to run its save off vcpu0.
4 - Within the stop_machine state, it pins any unpinned pgds (under
construction or destruction), performs canonicalizes various other
pieces of state (mostly converting mfns to pfns), and finally
5 - Suspend the domain
Restore reverses the steps used to save the domain, ending when all
the frozen processes are thawed.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:26 +0000 (23:31 +0100)]
xenbus: rebind irq on restore
When restoring, rebind the existing xenbus irq to the new xenbus event
channel. (It turns out in practice that this is always the same, and
is never updated on restore. That's a bug, but Xeno-linux has been
like this for a long time, so it can't really be fixed.)
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:25 +0000 (23:31 +0100)]
xen-console: add save/restore
Add code to:
1. Deal with the console page being canonicalized. During save, the
console's mfn in the start_info structure is canonicalized to a pfn.
In order to deal with that, we always use a copy of the pfn and
indirect off that all the time. However, we fall back to using the
mfn if the pfn hasn't been initialized yet.
2. Restore the console event channel, and rebind it to the existing irq.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:24 +0000 (23:31 +0100)]
xen: fix unbind_from_irq()
Rearrange the tests in unbind_from_irq() so that we can still unbind
an irq even if the underlying event channel is bad. This allows a
device driver to shuffle its irqs on save/restore before the
underlying event channels have been fixed up.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:23 +0000 (23:31 +0100)]
xen: add rebind_evtchn_irq
Add rebind_evtchn_irq(), which will rebind an device driver's existing
irq to a new event channel on restore. Since the new event channel
will be masked and bound to vcpu0, we update the state accordingly and
unmask the irq once everything is set up.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:22 +0000 (23:31 +0100)]
xen: add p2m mfn_list_list
When saving a domain, the Xen tools need to remap all our mfns to
portable pfns. In order to remap our p2m table, it needs to know
where all its pages are, so maintain the references to the p2m table
for it to use.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:21 +0000 (23:31 +0100)]
xen: make dummy_shared_info non-static
Rename dummy_shared_info to xen_dummy_shared_info and make it
non-static, in anticipation of users outside of enlighten.c
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:20 +0000 (23:31 +0100)]
xen: efficiently support a holey p2m table
When using sparsemem and memory hotplug, the kernel's pseudo-physical
address space can be discontigious. Previously this was dealt with by
having the upper parts of the radix tree stubbed off. Unfortunately,
this is incompatible with save/restore, which requires a complete p2m
table.
The solution is to have a special distinguished all-invalid p2m leaf
page, which we can point all the hole areas at. This allows the tools
to see a complete p2m table, but it only costs a page for all memory
holes.
It also simplifies the code since it removes a few special cases.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:19 +0000 (23:31 +0100)]
xen: add configurable max domain size
Add a config option to set the max size of a Xen domain. This is used
to scale the size of the physical-to-machine array; it ends up using
around 1 page/GByte, so there's no reason to be very restrictive.
For a 32-bit guest, the default value of 8GB is probably sufficient;
there's not much point in giving a 32-bit machine much more memory
than that.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:18 +0000 (23:31 +0100)]
xen: make phys_to_machine structure dynamic
We now support the use of memory hotplug, so the physical to machine
page mapping structure must be dynamic. This is implemented as a
two-level radix tree structure, which allows us to efficiently
incrementally allocate memory for the p2m table as new pages are
added.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Adrian Bunk [Mon, 26 May 2008 22:31:17 +0000 (23:31 +0100)]
xen: drivers/xen/balloon.c: make a function static
Make the needlessly global balloon_set_new_target() static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:16 +0000 (23:31 +0100)]
xen: count resched interrupts properly
Make sure resched interrupts appear in /proc/interrupts in the proper
place.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Isaku Yamahata [Mon, 26 May 2008 22:31:15 +0000 (23:31 +0100)]
xen: add missing definitions in include/xen/interface/memory.h which ia64/xen needs
Add xen handles realted definitions for xen memory which ia64/xen needs.
Pointer argumsnts for ia64/xen hypercall are passed in pseudo physical
address (guest physical address) so that it is required to convert
guest kernel virtual address into pseudo physical address.
The xen guest handle represents such arguments.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Isaku Yamahata [Mon, 26 May 2008 22:31:14 +0000 (23:31 +0100)]
xen: compilation fix to balloon driver for ia64 support
fix compilation error of ballon driver on ia64.
extent_start member is pointer argument. On x86 pointer argument for
xen hypercall is passed as virtual address.
On the other hand, ia64 and ppc, pointer argument is passed in pseudo
physical address. (guest physicall address.)
So they must be passed as handle and convert right before issuing hypercall.
CC drivers/xen/balloon.o
linux-2.6-x86/drivers/xen/balloon.c: In function 'increase_reservation':
linux-2.6-x86/drivers/xen/balloon.c:228: error: incompatible types in assignment
linux-2.6-x86/drivers/xen/balloon.c: In function 'decrease_reservation':
linux-2.6-x86/drivers/xen/balloon.c:324: error: incompatible types in assignment
linux-2.6-x86/drivers/xen/balloon.c: In function 'dealloc_pte_fn':
linux-2.6-x86/drivers/xen/balloon.c:486: error: incompatible types in assignment
linux-2.6-x86/drivers/xen/balloon.c: In function 'alloc_empty_pages_and_pagevec':
linux-2.6-x86/drivers/xen/balloon.c:522: error: incompatible types in assignment
make[2]: *** [drivers/xen/balloon.o] Error 1
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Isaku Yamahata [Mon, 26 May 2008 22:31:13 +0000 (23:31 +0100)]
xen: Move manage.c to drivers/xen for ia64/xen support
move arch/x86/xen/manage.c under drivers/xen/to share codes
with x86 and ia64.
ia64/xen also uses manage.c
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:12 +0000 (23:31 +0100)]
xen: make earlyprintk=xen work again
For some perverse reason, if you call add_preferred_console() it prevents
setup_early_printk() from successfully enabling the boot console -
unless you make it a preferred console too...
Also, make xenboot console output distinct from normal console output,
since it gets repeated when the console handover happens, and the
duplicated output is confusing without disambiguation.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Markus Armbruster [Mon, 26 May 2008 22:31:11 +0000 (23:31 +0100)]
xen pvfb: Dynamic mode support (screen resizing)
The pvfb backend indicates dynamic mode support by creating node
feature_resize with a non-zero value in its xenstore directory.
xen-fbfront sends a resize notification event on mode change. Fully
backwards compatible both ways.
Framebuffer size and initial resolution can be controlled through
kernel parameter xen_fbfront.video. The backend enforces a separate
size limit, which it advertises in node videoram in its xenstore
directory.
xen-kbdfront gets the maximum screen resolution from nodes width and
height in the backend's xenstore directory instead of hardcoding it.
Additional goodie: support for larger framebuffers (512M on a 64-bit
system with 4K pages).
Changing the number of bits per pixels dynamically is not supported,
yet.
Ported from
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/
92f7b3144f41
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/
bfc040135633
Signed-off-by: Pat Campbell <plc@novell.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Markus Armbruster [Mon, 26 May 2008 22:31:10 +0000 (23:31 +0100)]
xen pvfb: Zero unused bytes in events sent to backend
This isn't a security flaw (the backend can see all our memory
anyway). But it's the right thing to do all the same.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Markus Armbruster [Mon, 26 May 2008 22:31:09 +0000 (23:31 +0100)]
xen pvfb: Module aliases to support module autoloading
These are mostly for completeness and consistency with the other
frontends, as PVFB is typically compiled in rather than a module.
Derived from
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/
5e294e29a43e
While there, add module descriptions.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Markus Armbruster [Mon, 26 May 2008 22:31:08 +0000 (23:31 +0100)]
xen pvfb: Pointer z-axis (mouse wheel) support
Add z-axis motion to pointer events. Backward compatible, because
there's space for the z-axis in union xenkbd_in_event, and old
backends zero it.
Derived from
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/
57dfe0098000
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/
1edfea26a2a9
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/
c3ff0b26f664
Signed-off-by: Pat Campbell <plc@novell.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Markus Armbruster [Mon, 26 May 2008 22:31:07 +0000 (23:31 +0100)]
xen: Enable console tty by default in domU if it's not a dummy
Without console= arguments on the kernel command line, the first
console to register becomes enabled and the preferred console (the one
behind /dev/console). This is normally tty (assuming
CONFIG_VT_CONSOLE is enabled, which it commonly is).
This is okay as long tty is a useful console. But unless we have the
PV framebuffer, and it is enabled for this domain, tty0 in domU is
merely a dummy. In that case, we want the preferred console to be the
Xen console hvc0, and we want it without having to fiddle with the
kernel command line. Commit
b8c2d3dfbc117dff26058fbac316b8acfc2cb5f7
did that for us.
Since we now have the PV framebuffer, we want to enable and prefer tty
again, but only when PVFB is enabled. But even then we still want to
enable the Xen console as well.
Problem: when tty registers, we can't yet know whether the PVFB is
enabled. By the time we can know (xenstore is up), the console setup
game is over.
Solution: enable console tty by default, but keep hvc as the preferred
console. Change the preferred console to tty when PVFB probes
successfully, unless we've been given console kernel parameters.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:06 +0000 (23:31 +0100)]
x86/paravirt: add pte_flags to just get pte flags
Add pte_flags() to extract the flags from a pte. This is a special
case of pte_val() which is only guaranteed to return the pte's flags
correctly; the page number may be corrupted or missing.
The intent is to allow paravirt implementations to return pte flags
without having to do any translation of the page number (most notably,
Xen).
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:05 +0000 (23:31 +0100)]
xen: don't worry about preempt during xen_irq_enable()
When enabling interrupts, we don't need to worry about preemption,
because we either enter with interrupts disabled - so no preemption -
or the caller is confused and is re-enabling interrupts on some
indeterminate processor.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:04 +0000 (23:31 +0100)]
xen: allow some cr4 updates
The guest can legitimately change things like cr4.OSFXSR and
OSXMMEXCPT, so let it.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:02 +0000 (23:31 +0100)]
xen: use new sched_op
Use the new sched_op hypercall, mainly because xenner doesn't support
the old one.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:01 +0000 (23:31 +0100)]
xen: use hypercall rather than clts
Xen will trap and emulate clts, but its better to use a hypercall.
Also, xenner doesn't handle clts.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:31:00 +0000 (23:31 +0100)]
xen: make early console also write to debug console
When using "earlyprintk=xen", also write the console output to the raw
debug console. This will appear on dom0's console if the hypervisor
has been compiled to allow it.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Mon, 26 May 2008 22:30:59 +0000 (23:30 +0100)]
xen: add raw console write functions for debug
Add a couple of functions which can write directly to the Xen console
for debugging. This output ends up on the host's dom0 console
(assuming it allows the domain to write there).
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jeremy Fitzhardinge [Fri, 9 May 2008 11:05:57 +0000 (12:05 +0100)]
xen: remove support for non-PAE 32-bit
Non-PAE operation has been deprecated in Xen for a while, and is
rarely tested or used. xen-unstable has now officially dropped
non-PAE support. Since Xen/pvops' non-PAE support has also been
broken for a while, we may as well completely drop it altogether.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
HTC_EGPIO is ARM-only
driver uses symbols defined only on ARM
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
provide out-of-line strcat() for m68k
Whether we sidestep it in init/main.c or not, such situations
will arise again; compiler does generate calls of strcat()
on optimizations, so we really ought to have an out-of-line
version...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
caiaq endianness fix
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
MODULE_LICENSE expects "GPL v2", not "GPLv2"
... and we have few enough places using the latter to make it
simpler to do search and replace...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
msnd_* is ISA-only
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
missing dependencies on HAS_DMA
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
ocfs2 endianness fixes
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
irda-usb endianness annotations and fixes
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
sbus bpp: instances missed in s/dev_name/bpp_dev_name/
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
ecryptfs fixes
memcpy() from userland pointer is a Bad Thing(tm)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
misc drivers/net endianness noise
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
thanks to net/mac80211 we need to pull drivers/leds/Kconfig on uml
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
missing export of csum_partial() on uml/amd64
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
uml: add missing exports for UML_RANDOM=m
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
fix hppfs Makefile breakage
Fallout from commit
46d7b522ebf486edbd096965d534cc6465e9e309 ("uml: move
hppfs_kern.c to hppfs.c")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
fix include order in sys-i386/registers.c
We want sys/ptrace.h before any includes of linux/ptrace.h and
asm/user.h pulls the latter.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Al Viro [Wed, 21 May 2008 05:32:11 +0000 (06:32 +0100)]
missed kmalloc() in pcap_user.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Wed, 21 May 2008 04:12:14 +0000 (21:12 -0700)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (21 commits)
[CIFS] Remove debug statement
Fix possible access to undefined memory region.
[CIFS] Enable DFS support for Windows query path info
[CIFS] Enable DFS support for Unix query path info
[CIFS] add missing seq_printf to cifs_show_options for hard mount option
[CIFS] add more complete mount options to cifs_show_options
[CIFS] Add missing defines for DFS
CIFSGetDFSRefer cleanup + dfs_referral_level_3 fixed to conform REFERRAL_V3 the MS-DFSC spec.
Fixed DFS code to work with new 'build_path_from_dentry', that returns full path if share in the dfs, now.
[CIFS] enable parsing for transport encryption mount parm
[CIFS] Finishup DFS code
[CIFS] BKL-removal: convert CIFS over to unlocked_ioctl
[CIFS] suppress duplicate warning
[CIFS] Fix paths when share is in DFS to include proper prefix
add function to convert access flags to legacy open mode
clarify return value of cifs_convert_flags()
[CIFS] don't explicitly do a FindClose on rewind when directory search has ended
[CIFS] cleanup old checkpatch warnings
[CIFS] CIFSSMBPosixLock should return -EINVAL on error
fix memory leak in CIFSFindNext
...
Steve French [Wed, 21 May 2008 03:49:46 +0000 (03:49 +0000)]
[CIFS] Remove debug statement
Signed-off-by: Steve French <sfrench@us.ibm.com>
Igor Mammedov [Tue, 20 May 2008 09:02:01 +0000 (13:02 +0400)]
Fix possible access to undefined memory region.
Signed-off-by: Igor Mammedov <niallain@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Linus Torvalds [Wed, 21 May 2008 02:30:54 +0000 (19:30 -0700)]
Merge branch 'for-2.6.26' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.26' of git://linux-nfs.org/~bfields/linux: (25 commits)
svcrdma: Verify read-list fits within RPCSVC_MAXPAGES
svcrdma: Change svc_rdma_send_error return type to void
svcrdma: Copy transport address and arm CQ before calling rdma_accept
svcrdma: Set rqstp transport address in rdma_read_complete function
svcrdma: Use ib verbs version of dma_unmap
svcrdma: Cleanup queued, but unprocessed I/O in svc_rdma_free
svcrdma: Move the QP and cm_id destruction to svc_rdma_free
svcrdma: Add reference for each SQ/RQ WR
svcrdma: Move destroy to kernel thread
svcrdma: Shrink scope of spinlock on RQ CQ
svcrdma: Use standard Linux lists for context cache
svcrdma: Simplify RDMA_READ deferral buffer management
svcrdma: Remove unused READ_DONE context flags bit
svcrdma: Return error from rdma_read_xdr so caller knows to free context
svcrdma: Fix error handling during listening endpoint creation
svcrdma: Free context on post_recv error in send_reply
svcrdma: Free context on ib_post_recv error
svcrdma: Add put of connection ESTABLISHED reference in rdma_cma_handler
svcrdma: Fix return value in svc_rdma_send
svcrdma: Fix race with dto_tasklet in svc_rdma_send
...
Linus Torvalds [Wed, 21 May 2008 00:23:03 +0000 (17:23 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
pktgen: make sure that pktgen_thread_worker has been executed
[VLAN]: Propagate selected feature bits to VLAN devices
drivers/atm/: remove CVS keywords
vlan: Correctly handle device notifications for layered VLAN devices
net: Fix call to ->change_rx_flags(dev, IFF_MULTICAST) in dev_change_flags()
net_sched: cls_api: fix return value for non-existant classifiers
ipsec: Use the correct ip_local_out function
ipv6 addrconf: Allow infinite prefix lifetime.
ipv6 route: Fix lifetime in netlink.
ipv6 addrconf: Fix route lifetime setting in corner case.
ndisc: Add missing strategies for per-device retrans timer/reachable time settings.
ipv6: Move <linux/in6.h> from header-y to unifdef-y.
l2tp: avoid skb truesize bug if headroom is increased
wireless: Create 'device' symlink in sysfs
wireless, airo: waitbusy() won't delay
libertas: fix command timeout after firmware failure
mac80211: Add RTNL version of ieee80211_iterate_active_interfaces
mac80211 : Association with 11n hidden ssid ap.
hostap: fix "registers" registration in procfs
isdn/capi: Return proper errnos on module init.
...
Linus Torvalds [Wed, 21 May 2008 00:21:32 +0000 (17:21 -0700)]
Merge git://git./linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Add global register dumping facility.
sparc: remove CVS keywords
sparc64: remove CVS keywords
Linus Torvalds [Wed, 21 May 2008 00:20:49 +0000 (17:20 -0700)]
Merge git://git./linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: CDC WDM driver
USB: ehci-orion: the Orion EHCI root hub does have a Transaction Translator
USB: serial: ch341: New VID/PID for CH341 USB-serial
USB: build fix
USB: pxa27x_udc - Fix Oops
USB: OPTION: fix name of Onda MSA501HS HSDPA modem
USB: add TELIT HDSPA UC864-E modem to option driver
usb-serial: Use ftdi_sio driver for RATOC REX-USB60F
Linus Torvalds [Wed, 21 May 2008 00:20:23 +0000 (17:20 -0700)]
Merge git://git./linux/kernel/git/gregkh/driver-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6:
SCSI: fix race in device_create
USB: Core: fix race in device_create
USB: Phidget: fix race in device_create
s390: fix race in device_create
SOUND: fix race in device_create
UIO: fix race in device_create
Power Supply: fix race in device_create
LEDS: fix race in device_create
IB: fix race in device_create
ide: fix race in device_create
fbdev: fix race in device_create
mm: bdi: fix race in bdi_class device creation
Driver core: add device_create_vargs and device_create_drvdata
J. Bruce Fields [Tue, 20 May 2008 23:57:38 +0000 (19:57 -0400)]
Merge branch 'from-tomtucker' into for-2.6.26
Denis V. Lunev [Tue, 20 May 2008 22:12:44 +0000 (15:12 -0700)]
pktgen: make sure that pktgen_thread_worker has been executed
The following courruption can happen during pktgen stop:
list_del corruption. prev->next should be
ffff81007e8a5e70, but was
6b6b6b6b6b6b6b6b
kernel BUG at lib/list_debug.c:67!
:pktgen:pktgen_thread_worker+0x374/0x10b0
? autoremove_wake_function+0x0/0x40
? _spin_unlock_irqrestore+0x42/0x80
? :pktgen:pktgen_thread_worker+0x0/0x10b0
kthread+0x4d/0x80
child_rip+0xa/0x12
? restore_args+0x0/0x30
? kthread+0x0/0x80
? child_rip+0x0/0x12
RIP list_del+0x48/0x70
The problem is that pktgen_thread_worker can not be executed if kthread_stop
has been called too early. Insert a completion on the normal initialization
path to make sure that pktgen_thread_worker will gain the control for sure.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Patrick McHardy [Tue, 20 May 2008 21:54:50 +0000 (14:54 -0700)]
[VLAN]: Propagate selected feature bits to VLAN devices
Propagate feature bits from the NETDEV_FEAT_CHANGE notifier. For now
only TSO is propagated for devices that announce their ability to
support TSO in combination with VLAN accel by setting the NETIF_F_VLAN_TSO
flag.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve French [Tue, 20 May 2008 21:52:32 +0000 (21:52 +0000)]
[CIFS] Enable DFS support for Windows query path info
Final piece for handling DFS in query_path_info, constructing a
fake inode for the junction directory which the submount will cover.
This handles the non-Unix (Windows etc.) code path.
Signed-off-by: Steve French <sfrench@us.ibm.com>
Adrian Bunk [Tue, 20 May 2008 21:52:25 +0000 (14:52 -0700)]
drivers/atm/: remove CVS keywords
This patch removes CVS keywords that weren't updated for a long time.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
Patrick McHardy [Tue, 20 May 2008 21:37:36 +0000 (14:37 -0700)]
vlan: Correctly handle device notifications for layered VLAN devices
Commit
30688a9 ([VLAN]: Handle vlan devices net namespace changing)
changed the device notifier to special-case notifications for VLAN
devices, effectively disabling state propagation to underlying VLAN
devices. This is needed for layered VLANs though, so restore the
original behaviour.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Woodhouse [Tue, 20 May 2008 21:36:14 +0000 (14:36 -0700)]
net: Fix call to ->change_rx_flags(dev, IFF_MULTICAST) in dev_change_flags()
Am I just being particularly dim today, or can the call to
dev->change_rx_flags(dev, IFF_MULTICAST) in dev_change_flags() never
happen?
We've just set dev->flags = flags & IFF_MULTICAST, effectively. So the
condition '(dev->flags ^ flags) & IFF_MULTICAST' is _never_ going to be
true.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Patrick McHardy [Tue, 20 May 2008 21:34:46 +0000 (14:34 -0700)]
net_sched: cls_api: fix return value for non-existant classifiers
cls_api should return ENOENT when the requested classifier doesn't
exist.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 20 May 2008 21:32:14 +0000 (14:32 -0700)]
ipsec: Use the correct ip_local_out function
Because the IPsec output function xfrm_output_resume does its
own dst_output call it should always call __ip_local_output
instead of ip_local_output as the latter may invoke dst_output
directly. Otherwise the return values from nf_hook and dst_output
may clash as they both use the value 1 but for different purposes.
When that clash occurs this can cause a packet to be used after
it has been freed which usually leads to a crash. Because the
offending value is only returned from dst_output with qdiscs
such as HTB, this bug is normally not visible.
Thanks to Marco Berizzi for his perseverance in tracking this
down.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 20 May 2008 21:28:34 +0000 (14:28 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/djbw/async_tx
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
iop-adma: fixup some kzalloc/memset confusions
fsldma: update the fsldma driver MAINTAINERS info
Oliver Neukum [Tue, 13 May 2008 15:01:25 +0000 (17:01 +0200)]
USB: CDC WDM driver
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Lennert Buytenhek [Tue, 20 May 2008 17:08:53 +0000 (19:08 +0200)]
USB: ehci-orion: the Orion EHCI root hub does have a Transaction Translator
Commit
7329e211b987a493cbcfca0e98c60eb108ab42df ("USB: root hubs don't
lie about their number of TTs") requires the various platform EHCI
glue modules to set ->has_tt if the root hub has a Transaction
Translator.
The Orion EHCI root hub does have a Transaction Translator, so set
->has_tt in ehci_orion_setup(). This fixes oopsing on plugging in a
low speed device.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Nicolas Pitre <nico@marvell.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Michael F. Robbins [Sat, 17 May 2008 03:48:42 +0000 (23:48 -0400)]
USB: serial: ch341: New VID/PID for CH341 USB-serial
Recent USB-serial devices using the WinChipHead CH340/CH341 chipset are
being shipped with a new vendor/product ID code pair, but an otherwise
identical device. (This is confirmed by looking at INF for the included
Windows driver.)
Patch is tested and working, both with new and old devices.
Signed-off-by: Michael F. Robbins <mrobbins@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Ingo Molnar [Fri, 16 May 2008 07:30:14 +0000 (09:30 +0200)]
USB: build fix
this config:
http://redhat.com/~mingo/misc/config-Wed_Apr_30_15_12_48_CEST_2008.bad
fails to build due to an #error. Turn that into a #warning instead
to not break randconfig builds unnecessarily.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
karl beldan [Fri, 16 May 2008 09:30:22 +0000 (11:30 +0200)]
USB: pxa27x_udc - Fix Oops
udc_disable oopses dereferencing udc_command.
Signed-off-by: Karl Beldan <karl.beldan@gmail.com>
Acked-by: Robert Jarzmik <rjarzmik@free.fr>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Arnaldo Carvalho de Melo [Fri, 16 May 2008 18:41:40 +0000 (15:41 -0300)]
USB: OPTION: fix name of Onda MSA501HS HSDPA modem
This fixes the name of the onda MSA501HS device, I guess it is called
different things in different countries.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 15 May 2008 17:07:44 +0000 (10:07 -0700)]
USB: add TELIT HDSPA UC864-E modem to option driver
This adds the Telit UC864-E HDSPA modem support to the option driver.
This lets their customers comply with the GPL instead of having to use a
binary driver from the manufacturer.
Cc: Simon Kissel <kissel@viprinet.com>
Cc: Nico Erfurth <ne@nicoerfurth.de>
Cc: Andrea Ghezzo <TS-EMEA@telit.com>
Cc: Dietmar Staps <Dietmar.Staps@telit.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Atsushi Nemoto [Fri, 16 May 2008 15:13:56 +0000 (00:13 +0900)]
usb-serial: Use ftdi_sio driver for RATOC REX-USB60F
This patch reverts
57833ea6b95a3995149f1f6d1a8d8862ab7a0ba2
("usb-serial: pl2303: add support for RATOC REX-USB60F") and adds
support for the device to ftdi_sio driver.
Cc: Akira Tsukamoto <akirat@rd.scei.sony.co.jp>
Cc: stable <stable@kernel.org>
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Christophe Jaillet [Tue, 20 May 2008 23:33:06 +0000 (16:33 -0700)]
iop-adma: fixup some kzalloc/memset confusions
1) Remove an explicit memset(.., 0, ...) to a variable allocated with
kzalloc (i.e. 'dest').
2) Allocate 'src' with kmalloc instead of kzalloc as all elements of the
'src' buffer are initialized in a 'for(...)' loop just after.
3) remove useless 'sizeof(u8)', which always returns 1, when computing the
size of the memory to be allocated.
Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Zhang Wei [Tue, 13 May 2008 21:44:59 +0000 (14:44 -0700)]
fsldma: update the fsldma driver MAINTAINERS info
Add Li Yang as the new maintainer for fsldma driver and update
my email address.
Acked-by: Li Yang <leoli@freescale.com>
Signed-off-by: Zhang Wei <zw@zh-kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
SCSI: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata(). It fixes the problem in all of the scsi
drivers that need it.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Doug Gilbert <dgilbert@interlog.com>
Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
USB: Core: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
USB: Phidget: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata(). It fixes all 3 phidget drivers, which all have
the same problem.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Sean Young <sean@mess.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
s390: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
SOUND: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
UIO: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
Power Supply: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Anton Vorontsov <cbou@mail.ru>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
LEDS: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
IB: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org>
Reviewed-by: Roland Dreier <rolandd@cisco.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Sat, 17 May 2008 00:55:12 +0000 (17:55 -0700)]
ide: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 15 May 2008 20:44:08 +0000 (13:44 -0700)]
fbdev: fix race in device_create
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_drvdata().
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 15 May 2008 20:44:08 +0000 (13:44 -0700)]
mm: bdi: fix race in bdi_class device creation
There is a race from when a device is created with device_create() and
then the drvdata is set with a call to dev_set_drvdata() in which a
sysfs file could be open, yet the drvdata will be NULL, causing all
sorts of bad things to happen.
This patch fixes the problem by using the new function,
device_create_vargs().
Many thanks to Arthur Jones <ajones@riverbed.com> for reporting the bug,
and testing patches out.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Arthur Jones <ajones@riverbed.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 15 May 2008 20:44:08 +0000 (13:44 -0700)]
Driver core: add device_create_vargs and device_create_drvdata
We want to have the drvdata field set properly when creating the device
as sysfs callbacks can assume it is present and it can race the later
setting of this field.
So, create two new functions, deviec_create_vargs() and
device_create_drvdata() that take this new field.
device_create_drvdata() will go away in 2.6.27 as the drvdata field will
just be moved to the device_create() call as it should be.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Steve French [Tue, 20 May 2008 19:50:46 +0000 (19:50 +0000)]
[CIFS] Enable DFS support for Unix query path info
Final piece for handling DFS in unix_query_path_info, constructing a
fake inode for the junction directory which the submount will cover.
Acked-by: Igor Mammedov <niallain@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Linus Torvalds [Tue, 20 May 2008 17:55:04 +0000 (10:55 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: correct mailing list address
PCI: Correct last two HP entries in the bfsort whitelist
Linus Torvalds [Tue, 20 May 2008 17:12:48 +0000 (10:12 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
firewire: prevent userspace from accessing shut down devices
ieee1394: sbp2: use correct size of command descriptor block
Arjan van de Ven [Tue, 20 May 2008 16:53:52 +0000 (09:53 -0700)]
Fix a deadlock in the bttv driver
vidiocgmbuf() does this:
mutex_lock(&fh->cap.vb_lock);
retval = videobuf_mmap_setup(&fh->cap, gbuffers, gbufsize,
V4L2_MEMORY_MMAP);
and videobuf_mmap_setup() then just does
mutex_lock(&q->vb_lock);
ret = __videobuf_mmap_setup(q, bcount, bsize, memory);
mutex_unlock(&q->vb_lock);
which is an obvious double-take deadlock.
This patch fixes this by having vidiocgmbuf() just call the
__videobuf_mmap_setup function instead.
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Reported-by: Koos Vriezen <koos.vriezen@gmail.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>