The Mio A701 support features :
- GSM support
- Bluetooth support
- GPS support
- LED/Vibrator support
- Suspend/Resume support (very dependant on Mio FlashRam)
- Screen/Backlight support
- Keys/Keyboard support
- USB udc support
- MMC/SDIO support
- Flash Memory support
- Battery/AC plugin support
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Jaya Kumar [Sat, 16 Aug 2008 03:07:18 +0000 (04:07 +0100)]
[ARM] 5197/1: gumstix: conversion to MFP support and add bluetooth support
This patch converts gumstix over to the MFP configuration system and adds
bluetooth support.
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Jaya Kumar [Sun, 17 Aug 2008 04:59:32 +0000 (05:59 +0100)]
[ARM] 5200/1: am200epd: use fb notifiers and gpio api
The original am200epd driver was designed with bad assumptions. It
manipulated GPSR/GPLR registers directly. It relied on direct access to the
pxa LCDC registers which have since conflicted with commit ce4fb7b892a6d6c6a0f87366b26fd834d2923dd7 . This patch moves it into mach-pxa
and overhauls it to use a fb obtained through fb notifiers. It now uses the
generic GPIO api.
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Jaya Kumar [Tue, 19 Aug 2008 10:17:55 +0000 (11:17 +0100)]
[ARM] 5209/1: metronomefb: changes to use platform framebuffer
These changes are used in order to support the use of the framebuffer
provided by the platform device driver rather than to directly allocate one.
Other changes are cleanup to error handling and order of release.
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Jaya Kumar [Tue, 5 Aug 2008 12:52:14 +0000 (13:52 +0100)]
[ARM] 5186/1: metronomefb: convert printk to dev_dbg/err messages
This patch converts the printk messages in metronomefb to dev_dbg/err type
messages.
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Mark Brown [Tue, 26 Aug 2008 12:30:03 +0000 (13:30 +0100)]
[ARM] 5225/1: zaurus: Register I2C controller for audio codecs
corgi, spitz and poodle have audio codecs on their primary I2C bus so
need to call pxa_set_i2c_info() to set it up during init. Tested on
spitz by Stanislav.
Reported-by: Stanislav Brabec <utx@penguin.cz> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Jarkko Nikula [Tue, 26 Aug 2008 10:32:57 +0000 (13:32 +0300)]
ALSA: ASoC: Fix error paths in N810 machine driver init and release clocks at exit
Thanks to Felipe Balbi <felipe.balbi@nokia.com> by noticing that if clk_get
to sys_clkout2_src fails, then n810_snd_device is never released.
Add also sys_clkout2_src release into error path, error code return and
release the clocks at exit.
Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Joe Korty [Mon, 25 Aug 2008 21:15:33 +0000 (17:15 -0400)]
lockstat: fix numerical output rounding error
Fix rounding error in /proc/lock_stat numerical output.
On occasion the two digit fractional part contains the three
digit value '100'. This is due to a bug in the rounding algorithm
which pushes values in the range '95..99' to '100' rather than
to '00' + an increment to the integer part. For example,
[MIPS] emma2rh: Fix build error by header file inclusion weeding.
CC arch/mips/emma2rh/markeins/setup.o
In file included from arch/mips/emma2rh/markeins/setup.c:30:
include/linux/ide.h:645: error: ‘CONFIG_IDE_MAX_HWIFS’ undeclared here (not in a function)
make[1]: *** [arch/mips/emma2rh/markeins/setup.o] Error 1
H. Peter Anvin [Tue, 26 Aug 2008 00:44:03 +0000 (17:44 -0700)]
x86: msr-on-cpu: remove unnecessary level of abstraction
Remove an unnecessary level of abstraction in the msr-on-cpu library.
Although this duplicates some code, the duplicated code is less than
the additional code, and this way should be faster.
Additionally, change the order of the functions to make the regular
structure of this file more obvious.
H. Peter Anvin [Tue, 26 Aug 2008 05:39:15 +0000 (22:39 -0700)]
x86: msr: fix bogus return values from rdmsr_safe/wrmsr_safe
Impact: bogus error codes (+other?) on x86-64
The rdmsr_safe/wrmsr_safe routines have macros for the handling of the
edx:eax arguments. Those macros take a variable number of assembly
arguments. This is rather inherently incompatible with using
%digit-style escapes in the inline assembly; replace those with
%[name]-style escapes.
This fixes miscompilation on x86-64, which at the very least caused
bogus return values. It is possible that this could also corrupt the
return value; I am not sure.
H. Peter Anvin [Tue, 26 Aug 2008 00:35:25 +0000 (17:35 -0700)]
x86: cpuid: correct return value on partial operations
Return the correct return value when the CPUID driver partially
completes a request (we should return the number of bytes actually
read or written, instead of the error code.)
H. Peter Anvin [Tue, 26 Aug 2008 00:34:27 +0000 (17:34 -0700)]
x86: msr: correct return value on partial operations
Return the correct return value when the MSR driver partially
completes a request (we should return the number of bytes actually
read or written, instead of the error code.)
H. Peter Anvin [Tue, 26 Aug 2008 00:07:14 +0000 (17:07 -0700)]
smp: have smp_call_function_single() detect invalid CPUs
Have smp_call_function_single() return invalid CPU indicies and return
-ENXIO. This function is already executed inside a
get_cpu()..put_cpu() which locks out CPU removal, so rather than
having the higher layers doing another layer of locking to guard
against unplugged CPUs do the test here.
Steve French [Tue, 26 Aug 2008 00:37:14 +0000 (00:37 +0000)]
[CIFS] check version in spnego upcall response
Currently, we don't check the version in the SPNEGO upcall response
even though one is provided. Jeff and Q have made the corresponding
change to the Samba client (cifs.upcall).
Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Masakazu Mokuno [Wed, 20 Aug 2008 20:18:56 +0000 (06:18 +1000)]
powerpc/ps3: Fix ioremap of spu shadow regs
Fix the ioremap of the spu shadow regs on the PS3.
The current PS3 hypervisor requires the spu shadow regs to be
mapped with the PTE page protection bits set as read-only (PP=3).
This implementation uses the low level __ioremap() to bypass the
page protection settings inforced by ioremap_flags() to get the
needed PTE bits set for the shadow regs.
This fixes a runtime failure on the PS3 introduced by the powerpc
ioremap_prot rework of commit a1f242ff460e4b50a045fa237c3c56cce9eabf83
("powerpc ioremap_prot").
Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Masakazu Mokuno [Wed, 20 Aug 2008 20:18:51 +0000 (06:18 +1000)]
powerpc/ps3: Rework htab code to remove ioremap
Rework the PS3 MMU hash table code to remove the need to ioremap the
hash table by using the HV calls lv1_insert_htab_entry() and
lv1_read_htab_entries().
This fixes a runtime failure on the PS3 introduced by the powerpc
ioremap_prot rework of commit a1f242ff460e4b50a045fa237c3c56cce9eabf83
("powerpc ioremap_prot").
Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Carl Love [Mon, 11 Aug 2008 07:25:43 +0000 (17:25 +1000)]
powerpc/cell/oprofile: Avoid double vfree of profile buffer
If an error occurs on opcontrol start, the event and per cpu buffers
are released. If later opcontrol shutdown is called then the free
function will be called again to free buffers that no longer
exist. This results in a kernel oops. The following changes
prevent the call to delete buffers that don't exist.
Signed-off-by: Carl Love <carll@us.ibm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Yitchak Gertner [Mon, 25 Aug 2008 22:27:06 +0000 (15:27 -0700)]
bnx2x: Multi Queue
The multi queue support is still disabled by default for the bnx2x
(needs some more testing and validation), but there are 2 obvious bug in
it which are fixed in this patch
Signed-off-by: Yitchak Gertner <gertner@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yitchak Gertner [Mon, 25 Aug 2008 22:26:24 +0000 (15:26 -0700)]
bnx2x: NAPI and interrupts enable/disable
Fixing the order of enabling and disabling NAPI and the interrupts
Signed-off-by: Yitchak Gertner <gertner@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yitchak Gertner [Mon, 25 Aug 2008 22:25:45 +0000 (15:25 -0700)]
bnx2x: NIC load failure cleanup
Load failures were not handled correctly
Signed-off-by: Yitchak Gertner <gertner@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yitchak Gertner [Mon, 25 Aug 2008 22:24:21 +0000 (15:24 -0700)]
bnx2x: Initialization structure
The TPA initialization is part of the FW internal memory initialization
and so it is moved to the appropriate function
Signed-off-by: Yitchak Gertner <gertner@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eilon Greenstein [Mon, 25 Aug 2008 22:19:17 +0000 (15:19 -0700)]
bnx2x: Rx work check
The has Rx work check was wrong: when the FW was at the end of the page,
the driver was already at the beginning of the next page. Since the
check only validated that both driver and FW are pointing to the same
place, it concluded that there is still work to be done. This caused
some serious issues including long latency results on ping-pong test and
lockups while unloading the driver in that condition.
Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 25 Aug 2008 22:16:19 +0000 (15:16 -0700)]
sctp: add verification checks to SCTP_AUTH_KEY option
The structure used for SCTP_AUTH_KEY option contains a
length that needs to be verfied to prevent buffer overflow
conditions. Spoted by Eugene Teo <eteo@redhat.com>.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The header file for use by (in-kernel) PCMCIA sockets deserved a major
cleanup. Some stuff only used by the pcmcia core modules was moved to
cs_internal.h
cs_internal.h is meant for definitions internal to the PCMCIA core modules.
It must not be included by PCMCIA socket drivers or by PCMCIA device drivers.
Allowing 4k CPU's is not practical at this time, because we still have a
number of places that have several 'cpumask_t's on the stack, and a
4k-bit cpumask is 512 bytes of stack-space for each such variable. This
literally caused functions like 'smp_call_function_mask' to have a 2.5kB
stack frame, and several functions to have 2kB stackframes.
With an 8kB stack total, smashing the stack was simply much too likely.
At least bugzilla entry
http://bugzilla.kernel.org/show_bug.cgi?id=11342
was due to this.
The earlier commit to not inline load_module() into sys_init_module()
fixed the particular symptoms of this that Alan Brunelle saw in that
bugzilla entry, but the huge stack waste by cpumask_t's was the more
direct cause.
Some day we'll have allocation helpers that allocate large CPU masks
dynamically, but in the meantime we simply cannot allow cpumasks this
large.
Cc: Alan D. Brunelle <Alan.Brunelle@hp.com> Cc: Mike Travis <travis@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 25 Aug 2008 18:26:33 +0000 (11:26 -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: add X86_FEATURE_XMM4_2 definitions
x86: fix cpufreq + sched_clock() regression
x86: fix HPET regression in 2.6.26 versus 2.6.25, check hpet against BAR, v3
x86: do not enable TSC notifier if we don't need it
x86 MCE: Fix CPU hotplug problem with multiple multicore AMD CPUs
x86: fix: make PCI ECS for AMD CPUs hotplug capable
x86: fix: do not run code in amd_bus.c on non-AMD CPUs
Linus Torvalds [Mon, 25 Aug 2008 18:25:10 +0000 (11:25 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: fix reference leak in pci_get_dev_by_id()
PCI: shpchp: Rename duplicate slot name N as N-1, N-2, N-M...
PCI: pciehp: Rename duplicate slot name N as N-1, N-2, N-M...
Linus Torvalds [Mon, 25 Aug 2008 18:24:51 +0000 (11:24 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: ASoC: Fix double free and memory leak in many codec drivers
ALSA: CA0106 on MSI K8N Diamond PLUS Motherboard
James Bottomley [Fri, 22 Aug 2008 21:15:22 +0000 (16:15 -0500)]
[IA64] Fix __{in,out}s{w,l} to handle unaligned data
Some ia64 systems produce several repeats of kernel messages like this:
kernel unaligned access to 0xe000000644220466, ip=0xa000000100516fa1
This was tracked to ide code using the __cmd[] field in "struct request"
via the __outsw() function. __cmd[] is a char array, so is not guaranteed
to be properly aligned when accessed as words.
Tested-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Linus Torvalds [Mon, 25 Aug 2008 18:19:53 +0000 (11:19 -0700)]
Merge branch 'kvm-updates-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
KVM: fix userspace ABI breakage
KVM: MMU: Fix torn shadow pte
KVM: Use .fixup instead of .text.fixup on __kvm_handle_fault_on_reboot
Linus Torvalds [Mon, 25 Aug 2008 18:10:26 +0000 (11:10 -0700)]
[module] Don't let gcc inline load_module()
'load_module()' is a complex function that contains all the ELF section
logic, and inlining it is utterly insane. But gcc will do it, simply
because there is only one call-site. As a result, all the stack space
that is allocated for all the work to load the module will still be
active when we actually call the module init sequence, and the deep call
chain makes stack overflows happen.
And stack overflows are really hard to debug, because they not only
corrupt random pages below the stack, but also corrupt the thread_info
structure that is allocated under the stack.
In this case, Alan Brunelle reported some crazy oopses at bootup, after
loading the processor module that ends up doing complex ACPI stuff and
has quite a deep callchain. This should fix it, and is the sane thing
to do regardless.
Cc: Alan D. Brunelle <Alan.Brunelle@hp.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Robin Holt [Tue, 29 Jul 2008 01:36:50 +0000 (20:36 -0500)]
[IA64] Fix ia64 build failure when CONFIG_SFC=m
CONFIG_SFC=m uses topology_core_siblings() which, for ia64, expects
cpu_core_map to be exported. It is not. This patch exports the needed
symbol.
Maintainers note: This really looks like the wrong thing to do ... it
would be much better for the kernel to export an API to provide
drivers like this with data they need (which in the case of this
driver seems to be an estimate of the effective parallelism available
on the platform). But x86 has exported this forever ... so go with
the flow until such an API is defined.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Heiko Carstens [Mon, 25 Aug 2008 16:13:27 +0000 (18:13 +0200)]
[S390] dcss: fix build bug.
Fix this compile bug:
CC drivers/s390/block/dcssblk.o
drivers/s390/block/dcssblk.c: In function 'dcssblk_add_store':
drivers/s390/block/dcssblk.c:387: error: implicit declaration of function 'dcssblk_get_segment_by_name'
drivers/s390/block/dcssblk.c:389: error: label 'release_gd' used but not defined
make[1]: *** [drivers/s390/block/dcssblk.o] Error 1
make: *** [drivers/s390/block/] Error 2
Peter Zijlstra [Mon, 25 Aug 2008 15:15:34 +0000 (17:15 +0200)]
sched_clock: fix cpu_clock()
This patch fixes 3 issues:
a) it removes the dependency on jiffies, because jiffies are incremented
by a single CPU, and the tick is not synchronized between CPUs. Therefore
relying on it to calculate a window to clip whacky TSC values doesn't work
as it can drift around.
So instead use [GTOD, GTOD+TICK_NSEC) as the window.
Joel Becker [Fri, 22 Aug 2008 21:30:10 +0000 (14:30 -0700)]
ocfs2: Increment the reference count of an already-active stack.
The ocfs2_stack_driver_request() function failed to increment the
refcount of an already-active stack. It only did the increment on the
first reference. Whoops.
Signed-off-by: Joel Becker <joel.becker@oracle.com> Tested-by: Marcos Matsunaga <marcos.matsunaga@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Adrian Bunk [Tue, 5 Aug 2008 22:36:09 +0000 (01:36 +0300)]
KVM: fix userspace ABI breakage
The following part of commit 9ef621d3be56e1188300476a8102ff54f7b6793f
(KVM: Support mixed endian machines) changed on the size of a struct
that is exported to userspace:
Eduardo Habkost [Tue, 19 Aug 2008 23:00:08 +0000 (20:00 -0300)]
KVM: Use .fixup instead of .text.fixup on __kvm_handle_fault_on_reboot
vmlinux.lds expects the fixup code to be on a section named .fixup. The
.text.fixup section is not mentioned on vmlinux.lds, and is included on
the resulting vmlinux (just after .text) only because of ld heuristics on
placing orphan sections.
However, placing .text.fixup outside .text breaks the definition of
_etext, making it exclude the .text.fixup contents. That makes .text.fixup
be ignored by the kernel initialization code that needs to know about
section locations, such as the code setting page protection bits.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Anthony Liguori [Mon, 18 Aug 2008 22:15:31 +0000 (17:15 -0500)]
virtio_balloon: fix towards_target when deflating balloon
Both v and vb->num_pages are u32 and unsigned int respectively. If v is less
than vb->num_pages (and it is, when deflating the balloon), the result is a
very large 32-bit number. Since we're returning a s64, instead of getting the
same negative number we desire, we get a very large positive number.
This handles the case where v < vb->num_pages and ensures we get a small,
negative, s64 as the result.
Rusty: please push this for 2.6.27-rc4. It's probably appropriate for the
stable tree too as it will cause an unexpected OOM when ballooning.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (simplified)
Jean Delvare [Mon, 25 Aug 2008 10:49:20 +0000 (11:49 +0100)]
ALSA: ASoC: Fix double free and memory leak in many codec drivers
Many SoC audio codec drivers have improper freeing of memory in error
paths.
* codec is allocated in the platform device probe function, but is not
freed there in case of error. Instead it is freed in the i2c device
probe function's error path. However the success or failure of both
functions is not linked, so this could result in a double free (if
the platform device is successfully probed, the i2c device probing
fails and then the platform driver is unregistered.)
* codec->private_data is allocated in many platform device probe
functions but not freed in their error paths.
This patch hopefully solves all these problems.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Adrian Hunter [Fri, 22 Aug 2008 11:23:35 +0000 (14:23 +0300)]
UBIFS: allow for racing between GC and TNC
The TNC mutex is unlocked prematurely when reading leaf nodes
with non-hashed keys. This is unsafe because the node may be
moved by garbage collection and the eraseblock unmapped, although
that has never actually happened during stress testing.
This patch fixes the flaw by detecting the race and retrying with
the TNC mutex locked.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Adrian Hunter [Wed, 20 Aug 2008 13:32:40 +0000 (16:32 +0300)]
UBIFS: always read hashed-key nodes under TNC mutex
Leaf-nodes that have a hashed key are stored in the
leaf-node-cache (LNC) which is protected by the TNC
mutex. Consequently, when reading a leaf node with
a hashed key (i.e. directory entries, xattr entries)
the TNC mutex is always required.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Bernd Schmidt [Mon, 25 Aug 2008 10:41:15 +0000 (18:41 +0800)]
Blackfin arch: fix bug - MPU crashes under stress
Bug Description:
a customer reported under IRQ stress, running applications may
wrongly trigger an ICPLB miss and be killed. after playing a
bit more, here's a test case that may be triggering the same bug.
Fixing:
After modifying page protections, only modify the active CPLBs if the
protection change was made for the active mm.
Avi Kivity [Mon, 25 Aug 2008 10:11:27 +0000 (13:11 +0300)]
x86: default to reboot via ACPI
Triple-fault and keyboard reset may assert INIT instead of RESET; however
INIT is blocked when Intel VT is enabled. This leads to a partially reset
machine when invoking emergency_restart via sysrq-b: the processor is still
working but other parts of the system are dead.
Default to rebooting via ACPI, which correctly asserts RESET and reboots the
machine.
This is safe since we will fall back to keyboard reset and triple fault if
acpi is not enabled or if the reset is not successful.
Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Bjorn Helgaas [Fri, 22 Aug 2008 15:47:17 +0000 (09:47 -0600)]
PNPACPI: ignore the producer/consumer bit for extended IRQ descriptors
The Extended Interrupt descriptor has a producer/consumer bit, but
it's not clear what that would mean, and existing BIOSes use the bit
inconsistently. This patch makes Linux PNPACPI ignore the bit.
The ACPI spec contains examples of PCI Interrupt Link devices marked
as ResourceProducers, but many BIOSes mark them as ResourceConsumers.
I also checked with a Windows contact, who said:
Windows uses only "resource consumer" when dealing with
interrupts. There's no useful way of looking at a resource
producer of interrupts.
... NT-based Windows largely infers the producer/consumer stuff
from the device type and ignores the bits in the namespace. This
was necessary because Windows 98 ignored them and early namespaces
contained random junk.
The reason I want to change this is because if PNPACPI devices exclude
ResourceProducer IRQ resources, we can't write PNP drivers for those
devices.
For example, on machines such as the the HP rx7620, rx7640, rx8620,
rx8640, and Superdome, HPET interrupts are ResourceProducers. The
HPET driver currently has to use acpi_bus_register_driver() and do its
own _CRS parsing, even though it requires absolutely no ACPI-specific
functionality.
It would be better if the HPET driver were a PNP driver and took
advantage of the _CRS parsing built into PNPACPI.
This producer/consumer check was originally added here:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=2b8de5f50e4a302b83ebcd5b0120621336d50bd6
to fix this bug:
http://bugzilla.kernel.org/show_bug.cgi?id=6292
However, the bug was related only to memory and I/O port resources,
where the distinction is sensible and important to Linux. Given that
the distinction is muddled for IRQ resources, I think it was a mistake
to add the check there.
Alex Nixon [Fri, 22 Aug 2008 10:52:15 +0000 (11:52 +0100)]
xen: implement CPU hotplugging
Note the changes from 2.6.18-xen CPU hotplugging:
A vcpu_down request from the remote admin via Xenbus both hotunplugs the
CPU, and disables it by removing it from the cpu_present map, and removing
its entry in /sys.
A vcpu_up request from the remote admin only re-enables the CPU, and does
not immediately bring the CPU up. A udev event is emitted, which can be
caught by the user if he wishes to automatically re-up CPUs when available,
or implement a more complex policy.
Signed-off-by: Alex Nixon <alex.nixon@citrix.com> Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
projects / linux-2.6-omap-h63xx.git / log