Przemo Firszt [Sat, 5 Nov 2011 11:28:22 +0000 (11:28 +0000)]
HID: wacom: Initial driver for Wacom Intuos4 Wireless (Bluetooth)
This is very basic driver for Wacom Intuos4 Wireless tablet. It supports only
position, pressure and pen buttons. More features will be added in the future.
Przemo Firszt [Sat, 5 Nov 2011 11:28:21 +0000 (11:28 +0000)]
HID: wacom: Move parsing to a separate function
This patch doesn't change the way driver works. Parsing logic is now in a
separate function. It's a first step to add Intuos4 Wireless support to
hid-wacom driver.
The accidental loss of CONFIG_DIO in commit 0e152d80507b75c00aac60f2ffc586360687cd52 ("m68k: reorganize Kconfig options
to improve mmu/non-mmu selections") exposed a missing symbol export in
m68k allmodconfig. If CONFIG_HP300=y but CONFIG_HPLANCE (which is bool,
and depends on CONFIG_DIO) is not set, and CONFIG_MVME147=y and
CONFIG_MVME147_NET=m, 7990.c is compiled as a module, giving:
Finn Thain [Sun, 23 Oct 2011 14:11:21 +0000 (01:11 +1100)]
mac_scsi: fix mac_scsi on some powerbooks
Fix the mac_scsi interrupt edge trigger on non-RBV PowerBooks. This doesn't appear to help my PowerBook 520 but the NetBSD source reveals that the PowerBook 500 series is different than the others.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Finn Thain [Sun, 23 Oct 2011 14:11:19 +0000 (01:11 +1100)]
m68k/mac: fix baboon irq disable and shutdown
The baboon_disabled hack is broken because it is missing an irq shutdown method. So releasing a Baboon irq kills the other Baboon irqs. But we don't really need this hack because we don't have media bay support and TREX uses a NuBus IRQ. Remove it.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Finn Thain [Sun, 23 Oct 2011 14:11:18 +0000 (01:11 +1100)]
m68k/mac: oss irq fixes
The IOP driver calls into the OSS driver to enable its IRQ. This undesirable coupling between drivers only exists because the OSS driver doesn't correctly handle all of its machspec IRQs.
Fix OSS handling of enable/disable for VIA1 IRQs (8 thru 15) which includes MAC_IRQ_ADB.
Back when I implemented pmac_zilog support I redefined IRQ_MAC_SCC incorrectly. Change this to a machspec IRQ so that it works on OSS.
Clean up the unused OSS audio IRQ and OSS_IRQLEV_* cruft that only confuses things.
Fix the OSS description in macints.c and remove an obsolete comment.
Don't enable the VIA1 irq before registering the handler.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Finn Thain [Sun, 23 Oct 2011 14:11:16 +0000 (01:11 +1100)]
m68k/mac: enable via_alt_mapping on performa 580
Enable via_alt_mapping on the Performa 588 and tidy up related documentation.
I'm betting that remapped IRQs work just fine on the Performa 580 series since it works on the LC 630 and the logic board part numbers are reputedly the same.
And the consensus seems to be that the Mac TV is essentially a Performa 550, not dissimilar to the Performa 520, so set the via_type accordingly.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Finn Thain [Sun, 23 Oct 2011 14:11:14 +0000 (01:11 +1100)]
m68k/mac: cleanup mac_irq_pending
mac_irq_pending() has only one caller (mac_esp.c). Nothing tests for Baboon, PSC or OSS pending interrupts. Until that need arises, let's keep it simple and remove all the unused abstraction. Replace it with a routine to check for SCSI DRQ.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Finn Thain [Sun, 23 Oct 2011 14:11:13 +0000 (01:11 +1100)]
m68k/mac: cleanup mac_clear_irq
mac_clear_irq() is dead code and has been dead for as long as I can recall. On certain Mac models, certain irqs can't be cleared this way. Outside of irq dispatch, this code appears be unusable without busy loops or worse, and for irq dispatch we duplicate the same logic. Remove mac_clear_irq() and supporting code.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Finn Thain [Sun, 23 Oct 2011 14:11:12 +0000 (01:11 +1100)]
m68k/mac: early console
Revive the old mac_serial_print() routine as mac_early_print(). mac_serial_print() did not function because it did not use the right offsets for its stack arguments. Fix this and make compilation conditional on CONFIG_EARLY_PRINTK instead of the obscure MAC_SERIAL_DEBUG macro.
Give mac_early_print() a new string length parameter to fit the early console API.
Send output to the framebuffer as well as serial ports.
Change the line rate to 38400 baud to match the default for the real (pmac_zilog) serial console.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
After commit e978aa7d7d57 ("cpuidle: Move dev->last_residency update to
driver enter routine; remove dev->last_state") setting acpi_idle_suspend
to 1 by acpi_processor_suspend() causes the ACPI cpuidle routines to
return error codes continuously, which in turn causes cpuidle to lock up
(hard).
However, acpi_idle_suspend doesn't appear to be useful for any
particular purpose (it's racy and doesn't really provide any real
protection), so it can be removed, which makes the problem go away.
Reported-and-tested-by: Tomas M. <tmezzadra@gmail.com> Reported-and-tested-by: Ferenc Wagner <wferi@niif.hu> Tested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nick Bowler [Thu, 10 Nov 2011 09:01:27 +0000 (09:01 +0000)]
ah: Don't return NET_XMIT_DROP on input.
When the ahash driver returns -EBUSY, AH4/6 input functions return
NET_XMIT_DROP, presumably copied from the output code path. But
returning transmit codes on input doesn't make a lot of sense.
Since NET_XMIT_DROP is a positive int, this gets interpreted as
the next header type (i.e., success). As that can only end badly,
remove the check.
Signed-off-by: Nick Bowler <nbowler@elliptictech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Will Deacon [Fri, 11 Nov 2011 10:35:58 +0000 (11:35 +0100)]
ARM: 7160/1: setup: avoid overflowing {elf,arch}_name from proc_info_list
setup_processor copies the arch_name and elf_name fields out of the
selected proc_info_list into two fixed size buffers.
Since the proc_info_list structure is defined in a proc_*.S assembly
file, this can lead to subtle errors if the strings defined there are
too long (for example, corrupting the machine ID).
This patch uses snprintf instead of sprintf to ensure that these buffers
are not overrun.
Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Olof Johansson [Wed, 9 Nov 2011 21:10:00 +0000 (22:10 +0100)]
ARM: 7156/1: l2x0: fix compile error on !CONFIG_USE_OF
fae2b89ab1 (ARM: l2x0: add empty l2x0_of_init) adds a static inline
function that returns -ENODEV, but at least on tegra cache-l2x0.h is
included without errno.h being pulled in first, resulting in compile
errors if OF isn't enabled:
In file included from arch/arm/mach-tegra/common.c:26:
arch/arm/include/asm/hardware/cache-l2x0.h: In function 'l2x0_of_init':
arch/arm/include/asm/hardware/cache-l2x0.h:110: error: 'ENODEV' undeclared (first use in this function)
arch/arm/include/asm/hardware/cache-l2x0.h:110: error: (Each undeclared identifier is reported only once
arch/arm/include/asm/hardware/cache-l2x0.h:110: error: for each function it appears in.)
Add errno.h to the include file to make it self-contained.
Signed-off-by: Olof Johansson <olof@lixom.net> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Axel Lin [Fri, 4 Nov 2011 12:04:41 +0000 (20:04 +0800)]
[CPUFREQ] db8500: fix build error due to undeclared i variable
The variable i is removed by commit ded8433
"[CPUFREQ] db8500: remove unneeded for loop iteration over freq_table",
but current code to print available frequencies still uses the i variable.
Thus add the i variable back to fix below buld error:
CC drivers/cpufreq/db8500-cpufreq.o
drivers/cpufreq/db8500-cpufreq.c: In function 'db8500_cpufreq_init':
drivers/cpufreq/db8500-cpufreq.c:123: error: 'i' undeclared (first use in this function)
drivers/cpufreq/db8500-cpufreq.c:123: error: (Each undeclared identifier is reported only once
drivers/cpufreq/db8500-cpufreq.c:123: error: for each function it appears in.)
make[2]: *** [drivers/cpufreq/db8500-cpufreq.o] Error 1
make[1]: *** [drivers/cpufreq] Error 2
make: *** [drivers] Error 2
This patch also fixes using uninitialized i variable as array index.
Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dave Jones <davej@redhat.com>
Linus Torvalds [Sat, 12 Nov 2011 02:04:51 +0000 (00:04 -0200)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: (29 commits)
m68k/mac: Remove mac_irq_{en,dis}able() wrappers
m68k/irq: Remove obsolete support for user vector interrupt fixups
m68k/irq: Remove obsolete m68k irq framework
m68k/q40: Convert Q40/Q60 to genirq
m68k/sun3: Convert Sun3/3x to genirq
m68k/sun3: Use the kstat_irqs_cpu() wrapper
m68k/apollo: Convert Apollo to genirq
m68k/vme: Convert VME to genirq
m68k/hp300: Convert HP9000/300 and HP9000/400 to genirq
m68k/mac: Optimize interrupts using chain handlers
m68k/mac: Convert Mac to genirq
m68k/amiga: Optimize interrupts using chain handlers
m68k/amiga: Convert Amiga to genirq
m68k/amiga: Refactor amiints.c
m68k/atari: Remove code and comments about different irq types
m68k/atari: Convert Atari to genirq
m68k/irq: Add genirq support
m68k/irq: Remove obsolete IRQ_FLG_* users
m68k/irq: Rename {,__}m68k_handle_int()
m68k/irq: Add m68k_setup_irq_controller()
...
Linus Torvalds [Sat, 12 Nov 2011 02:03:50 +0000 (00:03 -0200)]
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] v4l2-ctrl: Send change events to all fh for auto cluster slave controls
[media] v4l2-event: Don't set sev->fh to NULL on unsubscribe
[media] v4l2-event: Remove pending events from fh event queue when unsubscribing
[media] v4l2-event: Deny subscribing with a type of V4L2_EVENT_ALL
[media] MAINTAINERS: add a maintainer for s5p-mfc driver
[media] v4l: s5p-mfc: fix reported capabilities
[media] media: vb2: reset queued list on REQBUFS(0) call
[media] media: vb2: set buffer length correctly for all buffer types
[media] media: vb2: add a check for uninitialized buffer
[media] mxl111sf: fix build warning
[media] mxl111sf: remove pointless if condition in mxl111sf_config_spi
[media] mxl111sf: check for errors after mxl111sf_write_reg in mxl111sf_idac_config
[media] mxl111sf: fix return value of mxl111sf_idac_config
[media] uvcvideo: GET_RES should only be checked for BITMAP type menu controls
Linus Torvalds [Sat, 12 Nov 2011 02:01:51 +0000 (00:01 -0200)]
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:
powerpc/kvm: Fix build failure with HV KVM and CBE
powerpc/ps3: Fix lv1_gpu_attribute hcall
powerpc/ps3: Fix PS3 repository build warnings
powerpc/ps3: irq: Remove IRQF_DISABLED
powerpc/irq: Remove IRQF_DISABLED
powerpc/numa: NUMA topology support for PowerNV
powerpc: Add System RAM to /proc/iomem
powerpc: Add KVM as module to defconfigs
powerpc/kvm: Fix build with older toolchains
powerpc, tqm5200: update tqm5200_defconfig to fit for charon board.
powerpc/5200: add support for charon board
William Douglas [Thu, 10 Nov 2011 13:50:38 +0000 (13:50 +0000)]
bma023: Add SFI translation for this device
This needed the sfi IRQ 0xFF fix to go in first. It simply plumbs in the
bma023 driver with the firmware naming of it.
Signed-off-by: William Douglas <william.douglas@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Feng Tang [Thu, 10 Nov 2011 13:23:39 +0000 (13:23 +0000)]
vrtc: change its year offset from 1960 to 1972
Real world year equals the value in vrtc YEAR register plus an offset.
We used 1960 as the offset to make leap year consistent, but for a
device's first use, its YEAR register is 0 and the system year will
be parsed as 1960 which is not a valid UNIX time and will cause many
applications to fail mysteriously. So we use 1972 instead to fix this
issue.
Updated patch which adds a sanity check suggested by Mathias
This isn't a change in behaviour for systems, because 1972 is the one we
actually use. It's the old version in upstream which is out of sync with
all devices.
Linus Torvalds [Sat, 12 Nov 2011 01:47:06 +0000 (23:47 -0200)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: rename the option to nospace_cache
Btrfs: handle bio_add_page failure gracefully in scrub
Btrfs: fix deadlock caused by the race between relocation
Btrfs: only map pages if we know we need them when reading the space cache
Btrfs: fix orphan backref nodes
Btrfs: Abstract similar code for btrfs_block_rsv_add{, _noflush}
Btrfs: fix unreleased path in btrfs_orphan_cleanup()
Btrfs: fix no reserved space for writing out inode cache
Btrfs: fix nocow when deleting the item
Btrfs: tweak the delayed inode reservations again
Btrfs: rework error handling in btrfs_mount()
Btrfs: close devices on all error paths in open_ctree()
Btrfs: avoid null dereference and leaks when bailing from open_ctree()
Btrfs: fix subvol_name leak on error in btrfs_mount()
Btrfs: fix memory leak in btrfs_parse_early_options()
Btrfs: fix our reservations for updating an inode when completing io
Btrfs: fix oops on NULL trans handle in btrfs_truncate
btrfs: fix double-free 'tree_root' in 'btrfs_mount()'
Linus Torvalds [Sat, 12 Nov 2011 01:45:42 +0000 (23:45 -0200)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: usb-audio: Use kmemdup rather than duplicating its implementation
ALSA: hda - Re-enable the check NO_PRESENCE misc bit
ALSA: vmaster - Free slave-links when freeing the master element
ALSA: hda - Don't add elements of other codecs to vmaster slave
ALSA: intel8x0: improve virtual environment detection
ALSA: intel8x0: move virtual environment detection code into one place
ALSA: snd_usb_audio: add Logitech HD Webcam c510 to quirk-384
ALSA: hda - fix internal mic on Dell Vostro 3500 laptop
ALSA: HDA: Remove quirk for Toshiba T110
ALSA: usb-audio - Fix the missing volume quirks at delayed init
ALSA: hda - Mute unused capture sources for Realtek codecs
ALSA: intel8x0: Improve comments for VM optimization
ASoC: Ensure we get an impedence reported for WM8958 jack detect
ASoC: Don't use wm8994->control_data when requesting IRQs
ASoC: Don't use wm8994->control_data in wm8994_readable_register()
ASoC: Update git repository URL
Linus Torvalds [Sat, 12 Nov 2011 01:43:51 +0000 (23:43 -0200)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (42 commits)
drm/radeon/kms/pm: switch to dynamically allocating clock mode array
drm/radeon/kms: optimize r600_pm_profile_init
drm/radeon/kms/pm: add a proper pm profile init function for fusion
drm/radeon/kms: remove extraneous calls to radeon_pm_compute_clocks()
drm/exynos: added padding to be 64-bit align.
drm: fix kconfig unmet dependency warning
drm: add some comments to drm_wait_vblank and drm_queue_vblank_event
drm/radeon/benchmark: signedness bug in radeon_benchmark_move()
drm: do not sleep on vblank while holding a mutex
MAINTAINERS: exynos: Add EXYNOS DRM maintainer entry
drm: try to restore previous CRTC config if mode set fails
drm/radeon/kms: make an aux failure debug only
drm: drop select of SLOW_WORK
drm: serialize access to list of debugfs files
drm/radeon/kms: fix use of vram scratch page on evergreen/ni
drm/radeon: Make sure CS mutex is held across GPU reset.
drm: Ensure string is null terminated.
vmwgfx: Only allow 64x64 cursors
vmwgfx: Initialize clip rect loop correctly in surface dirty
vmwgfx: Close screen object system
...
Linus Torvalds [Sat, 12 Nov 2011 01:37:17 +0000 (23:37 -0200)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: fix force shutdown handling in xfs_end_io
xfs: constify xfs_item_ops
xfs: Fix possible memory corruption in xfs_readlink
Manuel Lauss [Thu, 10 Nov 2011 19:09:38 +0000 (20:09 +0100)]
MIPS: Alchemy: merge Au1000 and Au1300-style IRQ controller code.
With a generic plat_irq_dispatch (for Alchemy at least) code for both
interrupt controller types can coexist in a single kernel image and be
autodetected at runtime.
PCI: msi: Disable msi interrupts when we initialize a pci device
I traced a nasty kexec on panic boot failure to the fact that we had
screaming msi interrupts and we were not disabling the msi messages at
kernel startup. The booting kernel had not enabled those interupts so
was not prepared to handle them.
I can see no reason why we would ever want to leave the msi interrupts
enabled at boot if something else has enabled those interrupts. The pci
spec specifies that msi interrupts should be off by default. Drivers
are expected to enable the msi interrupts if they want to use them. Our
interrupt handling code reprograms the interrupt handlers at boot and
will not be be able to do anything useful with an unexpected interrupt.
This patch applies cleanly all of the way back to 2.6.32 where I noticed
the problem.
Cc: stable@kernel.org Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
PCI/ACPI/PM: Avoid resuming devices that don't signal PME
Modify pci_acpi_wake_dev() to avoid resuming PME-capable devices
whose PME Status bits are not set, which may happen currently if
several devices are associated with the same wakeup GPE and all
of them are notified whenever at least one of them signals PME.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
PCI/ACPI: Make acpiphp ignore root bridges using SHPC native hotplug
If the kernel has requested control of the SHPC native hotplug
feature for a given root bridge, the acpiphp driver should not try
to handle that root bridge and it should leave it to shpchp.
Failing to do so causes problems to happen if shpchp is loaded
and unloaded before loading acpiphp (ACPI-based hotplug won't work
in that case anyway).
To address this issue make find_root_bridges() ignore PCI root
bridges with SHPC native hotplug enabled and make add_bridge()
return error code if SHPC native hotplug is enabled for the given
root bridge. This causes acpiphp to refuse to load if SHPC native
hotplug is enabled for all root bridges and to refuse binding to
the root bridges with SHPC native hotplug enabled.
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Use non-ordered workqueue for attention button events.
Attention button events on each slot can be handled asynchronously. So
we should use non-ordered workqueue. This patch also removes ordered
workqueue in pciehp as a result.
Kenji Kaneshige [Mon, 7 Nov 2011 11:55:46 +0000 (20:55 +0900)]
PCI: pciehp: Fix wrong workqueue cleanup
Fix improper workqueue cleanup.
In the current pciehp, pcied_cleanup() calls destroy_workqueue()
before calling pcie_port_service_unregister(). This causes kernel oops
because flush_workqueue() is called in the pcie_port_service_unregister()
code path after the workqueue was destroyed. So pcied_cleanup() must call
pcie_port_service_unregister() first before calling destroy_workqueue().
Matthew Garrett [Thu, 10 Nov 2011 21:38:33 +0000 (16:38 -0500)]
PCI: Rework ASPM disable code
Right now we forcibly clear ASPM state on all devices if the BIOS indicates
that the feature isn't supported. Based on the Microsoft presentation
"PCI Express In Depth for Windows Vista and Beyond", I'm starting to think
that this may be an error. The implication is that unless the platform
grants full control via _OSC, Windows will not touch any PCIe features -
including ASPM. In that case clearing ASPM state would be an error unless
the platform has granted us that control.
This patch reworks the ASPM disabling code such that the actual clearing
of state is triggered by a successful handoff of PCIe control to the OS.
The general ASPM code undergoes some changes in order to ensure that the
ability to clear the bits isn't overridden by ASPM having already been
disabled. Further, this theoretically now allows for situations where
only a subset of PCIe roots hand over control, leaving the others in the
BIOS state.
It's difficult to know for sure that this is the right thing to do -
there's zero public documentation on the interaction between all of these
components. But enough vendors enable ASPM on platforms and then set this
bit that it seems likely that they're expecting the OS to leave them alone.
Measured to save around 5W on an idle Thinkpad X220.
Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Neil Horman [Thu, 6 Oct 2011 18:08:18 +0000 (14:08 -0400)]
PCI/sysfs: add per pci device msi[x] irq listing (v5)
This patch adds a per-pci-device subdirectory in sysfs called:
/sys/bus/pci/devices/<device>/msi_irqs
This sub-directory exports the set of msi vectors allocated by a given
pci device, by creating a numbered sub-directory for each vector beneath
msi_irqs. For each vector various attributes can be exported.
Currently the only attribute is called mode, which tracks the
operational mode of that vector (msi vs. msix)
Kenji Kaneshige [Thu, 10 Nov 2011 07:40:37 +0000 (16:40 +0900)]
PCI: pciehp: wait 1000 ms before Link Training check
We need to wait for 1000 ms after Data Link Layer Link Active (DLLLA)
bit reads 1b before sending configuration request. Currently pciehp
does this wait after checking Link Training (LT) bit. But we need it
before checking LT bit because LT is still set even after DLLLA bit is
set on some platforms.
Acked-by: Yinghai Lu <yinghai@kernel.org> Tested-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Currently, when smp_switch_to_ipl_cpu() is done, the backchain in the dump
analysis tool crash looks like the following:
#0 [1f746e70] __machine_kexec at 11dd92
#1 [1f746eb8] smp_restart_cpu at 11820e
#0 [00907eb0] cpu_idle at 10602e
#1 [00907ef8] start_kernel at 979a08
It would be good to see the registers of the interrupted function.
To achieve this, the backchain on the new stack has to be set to zero.
This looks then like the following:
The kernel address space of a 64 bit kernel currently uses a three level
page table and the vmemmap array has a fixed address and a fixed maximum
size. A three level page table is good enough for systems with less than
3.8TB of memory, for bigger systems four page table levels need to be
used. Each page table level costs a bit of performance, use 3 levels for
normal systems and 4 levels only for the really big systems.
To avoid bloating sparse.o too much set MAX_PHYSMEM_BITS to 46 for a
maximum of 64TB of memory.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
projects / karo-tx-linux.git / log