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Currently, snd_hdac_power_up()/down() helpers checks whether the codec
is being in pm (suspend/resume), and skips the call of runtime get/put
during it. This is needed as there are lots of power up/down
sequences called in the paths that are also used in the PM itself. An
example is found in hda_codec.c::codec_exec_verb(), where this can
power up the codec while it may be called again in its power up
sequence, too.
The above works in most cases, but sometimes we really want to wait
for the real power up. For example, the control element get/put may
want explicit power up so that the value change is assured to reach to
the hardware. Using the current snd_hdac_power_up(), however,
results in a race, e.g. when it's called during the runtime suspend is
being performed. In the worst case, as found in patch_ca0132.c, it
can even lead to the deadlock because the code assumes the power up
while it was skipped due to the check above.
For dealing with such cases, this patch makes snd_hdac_power_up() and
_down() to two variants: with and without in_pm flag check. The
version with pm flag check is named as snd_hdac_power_up_pm() while
the version without pm flag check is still kept as
snd_hdac_power_up(). (Just because the usage of the former is fewer.)
Then finally, the patch replaces each call potentially done in PM with
the new _pm() variant.
In theory, we can implement a unified version -- if we can distinguish
the current context whether it's in the pm path. But such an
implementation is cumbersome, so leave the code like this a bit messy
way for now...
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=96271
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Back merge HD-audio quirks to for-next branch, so that we can apply
a couple of more quirks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Use const to reduce data by ~3Kb.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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So far we assumed that the node attributes like amp values remain
during the power state transition of the node itself. While this is
true for IDT/STAC codecs I've tested, but some other codecs don't seem
behaving in that way.
This patch implements a partial sync mechanism specific to the given
widget node. Now we've merged the regmap support, and it can be
easily written with regcache_sync_region().
Tested-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Dave Chinner reported the following on https://lkml.org/lkml/2015/3/1/226
Across the board the 4.0-rc1 numbers are much slower, and the degradation
is far worse when using the large memory footprint configs. Perf points
straight at the cause - this is from 4.0-rc1 on the "-o bhash=101073" config:
- 56.07% 56.07% [kernel] [k] default_send_IPI_mask_sequence_phys
- default_send_IPI_mask_sequence_phys
- 99.99% physflat_send_IPI_mask
- 99.37% native_send_call_func_ipi
smp_call_function_many
- native_flush_tlb_others
- 99.85% flush_tlb_page
ptep_clear_flush
try_to_unmap_one
rmap_walk
try_to_unmap
migrate_pages
migrate_misplaced_page
- handle_mm_fault
- 99.73% __do_page_fault
trace_do_page_fault
do_async_page_fault
+ async_page_fault
0.63% native_send_call_func_single_ipi
generic_exec_single
smp_call_function_single
This is showing excessive migration activity even though excessive
migrations are meant to get throttled. Normally, the scan rate is tuned
on a per-task basis depending on the locality of faults. However, if
migrations fail for any reason then the PTE scanner may scan faster if
the faults continue to be remote. This means there is higher system CPU
overhead and fault trapping at exactly the time we know that migrations
cannot happen. This patch tracks when migration failures occur and
slows the PTE scanner.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reported-by: Dave Chinner <david@fromorbit.com>
Tested-by: Dave Chinner <david@fromorbit.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fix from Tejun Heo:
"One patch to fix a regression from the recent switch to blk-mq tag
allocation which can cause oops on SAS-attached SATA drives"
* 'for-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
ata: Add a new flag to destinguish sas controller
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Two fixes here, one typo fix in the documentation and one fix for a
system hang with one of the Palmas chips caused by the use of an
incorrect offset being provided for one of the registers"
* tag 'regulator-fix-v4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: Fix documentation for regmap in the config
regulator: palmas: Correct TPS659038 register definition for REGEN2
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fix from Mark Brown:
"This patch fixes a bad interaction between the support that was added
for having regmaps without devices for early system controller
initialization and the trace support.
There's a very good analysis of the actual issue in the commit message
for the change"
* tag 'regmap-fix-v4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: introduce regmap_name to fix syscon regmap trace events
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'regulator/fix/palmas' into regulator-linus
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Pull networking fixes from David Miller:
1) Validate iov ranges before feeding them into iov_iter_init(), from
Al Viro.
2) We changed copy_from_msghdr_from_user() to zero out the msg_namelen
is a NULL pointer is given for the msg_name. Do the same in the
compat code too. From Catalin Marinas.
3) Fix partially initialized tuples in netfilter conntrack helper, from
Ian Wilson.
4) Missing continue; statement in nft_hash walker can lead to crashes,
from Herbert Xu.
5) tproxy_tg6_check looks for IP6T_INV_PROTO in ->flags instead of
->invflags, fix from Pablo Neira Ayuso.
6) Incorrect memory account of TCP FINs can result in negative socket
memory accounting values. Fix from Josh Hunt.
7) Don't allow virtual functions to enable VLAN promiscuous mode in
be2net driver, from Vasundhara Volam.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
netfilter: nft_compat: set IP6T_F_PROTO flag if protocol is set
cx82310_eth: wait for firmware to become ready
net: validate the range we feed to iov_iter_init() in sys_sendto/sys_recvfrom
net: compat: Update get_compat_msghdr() to match copy_msghdr_from_user() behaviour
be2net: use PCI MMIO read instead of config read for errors
be2net: restrict MODIFY_EQ_DELAY cmd to a max of 8 EQs
be2net: Prevent VFs from enabling VLAN promiscuous mode
tcp: fix tcp fin memory accounting
ipv6: fix backtracking for throw routes
net: ethernet: pcnet32: Setup the SRAM and NOUFLO on Am79C97{3, 5}
ipv6: call ipv6_proxy_select_ident instead of ipv6_select_ident in udp6_ufo_fragment
netfilter: xt_TPROXY: fix invflags check in tproxy_tg6_check()
netfilter: restore rule tracing via nfnetlink_log
netfilter: nf_tables: allow to change chain policy without hook if it exists
netfilter: Fix potential crash in nft_hash walker
netfilter: Zero the tuple in nfnl_cthelper_parse_tuple()
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The 16bit COEF read/write is pretty standard for many codecs, and they
can be cached in most cases -- more importantly, they need to be
restored at resume. For making this easier, add the cache support to
regmap. If the codec driver wants to cache the COEF access, set
codec->cache_coef flag and issue AC_VERB_GET_PROC_COEF with the coef
index in LSB 8 bits.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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HD-audio spec is inconvenient regarding the handling of stereo volume
controls. It can set and get only single channel at once (although
there is a special option to set the same value to both channels).
This patch provides a fake pseudo-register via the regmap access so
that the stereo channels can be read and written by a single call.
It'd be useful, for example, for implementing DAPM widgets.
A stereo amp pseudo register consists of the encoding like the normal
amp verbs but it has both SET_LEFT (bit 13) and SET_RIGHT (bit 12)
bits set. The regmap reads and writes a 16bit value for this pseudo
register where the upper 8bit is for the right chanel and the lower
8bit for the left channel.
Note that the driver doesn't recognize conflicts when both stereo and
mono channel registers are mixed. Mixing them would certainly confuse
the operation. So, use carefully.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Codecs may have own vendor-specific verbs, and we need to allow each
driver to give such verbs for cached accesses. Here a verb can be put
into a single array and looked through it at readable and writeable
callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The amp hash table was used for recording the cached reads of some
capability values like pin caps or amp caps. Now all these are moved
to regmap as well.
One addition to the regmap helper is codec->caps_overwriting flag.
This is set in snd_hdac_override_parm(), and the regmap helper accepts
any register while this flag is set, so that it can overwrite even the
read-only verb like AC_VERB_PARAMETERS. The flag is cleared
immediately in snd_hdac_override_parm(), as it's a once-off flag.
Along with these changes, the no longer needed amp hash and relevant
fields are removed from hda_codec struct now.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Sometimes we need the uncached reads, e.g. for refreshing the tree.
This patch provides the helper function for that and uses it for
refreshing widgets, reading subtrees and the whole proc reads.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Let's start converting the access functions to regmap.
The first one is the simplest, just converting the codec parameter
read helper function snd_hda_param_read().
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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This patch adds an infrastructure to support regmap-based verb
accesses. Because o the asymmetric nature of HD-audio verbs,
especially the amp verbs, we need to translate the verbs as a sort of
pseudo registers to be mapped uniquely in regmap.
In this patch, a pseudo register is built from the NID, the
AC_VERB_GET_* and 8bit parameters, i.e. almost in the form to be sent
to HD-audio bus but without codec address field. OTOH, for writing,
the same pseudo register is translated to AC_VERB_SET_* automatically.
The AC_VERB_SET_AMP_* verb is re-encoded from the corresponding
AC_VERB_GET_AMP_* verb and parameter at writing.
Some verbs has a single command for read but multiple for writes. A
write for such a verb is split automatically to multiple verbs.
The patch provides also a few handy helper functions. They are
designed to be accessible even without regmap. When no regmap is set
up (e.g. before the codec device instantiation), the direct hardware
access is used. Also, it tries to avoid the unnecessary power-up.
The power up/down sequence is performed only on demand.
The codec driver needs to call snd_hdac_regmap_exit() and
snd_hdac_regmap_exit() at probe and remove if it wants the regmap
access.
There is one flag added to hdac_device. When the flag lazy_cache is
set, regmap helper ignores a write for a suspended device and returns
as if it was actually written. It reduces the hardware access pretty
much, e.g. when adjusting the mixer volume while in idle. This
assumes that the driver will sync the cache later at resume properly,
so use it carefully.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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This will be used by the regmap support.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Add an overriding exec_verb op to struct hdac_device so that the call
via snd_hdac_exec_verb() can switch to a different route depending on
the setup. The codec driver sets this field so that it can handle the
errors or applying quirks appropriately. Furthermore, this mechanism
will be used for smooth transition for the regmap support in later
patches.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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This patch changes the sysfs files assigned to the codec device on the
bus which were formerly identical with hwdep sysfs files. Now it
shows only a few core parameter, vendor_id, subsystem_id, revision_id,
afg, mfg, vendor_name and chip_name.
In addition, now a widget tree is added to the bus device sysfs
directory for showing the widget topology and attributes. It's just a
flat tree consisting of subdirectories named as the widget NID
including various attributes like widget capability bits. The AFG
(usually NID 0x01) is always found there, and it contains always
amp_in_caps, amp_out_caps and power_caps files. Each of these
attributes show a single value. The rest are the widget nodes
belonging to that AFG. Note that the child node might not start from
0x02 but from another value like 0x0a.
Each child node may contain caps, pin_caps, amp_in_caps, amp_out_caps,
power_caps and connections files. The caps (representing the widget
capability bits) always contain a value. The rest may contain
value(s) if the attribute exists on the node. Only connections file
show multiple values while other attributes have zero or one single
value.
An example of ls -R output is like below:
% ls -R /sys/bus/hdaudio/devices/hdaudioC0D0/
/sys/bus/hdaudio/devices/hdaudioC0D0/widgets/:
01/ 04/ 07/ 0a/ 0d/ 10/ 13/ 16/ 19/ 1c/ 1f/ 22/
02/ 05/ 08/ 0b/ 0e/ 11/ 14/ 17/ 1a/ 1d/ 20/ 23/
03/ 06/ 09/ 0c/ 0f/ 12/ 15/ 18/ 1b/ 1e/ 21/
/sys/bus/hdaudio/devices/hdaudioC0D0/widgets/01:
amp_in_caps amp_out_caps power_caps
/sys/bus/hdaudio/devices/hdaudioC0D0/widgets/02:
amp_in_caps amp_out_caps caps connections pin_caps pin_cfg
power_caps
/sys/bus/hdaudio/devices/hdaudioC0D0/widgets/03:
.....
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Now some codes and functionalities of hda_codec struct are moved to
hdac_device struct. A few basic attributes like the codec address,
vendor ID number, FG numbers, etc are moved to hdac_device, and they
are accessed like codec->core.addr. The basic verb exec functions are
moved, too.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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A few basic codes for communicating over HD-audio bus are moved to
struct hdac_bus now. It has only command and get_response ops in
addition to the unsolicited event handling.
Note that the codec-side tracing support is disabled temporarily
during this transition due to the code shuffling. It will be
re-enabled later once when all pieces are settled down.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Define the common hd-audio driver and device types to bind over
snd_hda_bus_type publicly. This allows to implement other type of
device and driver code over hd-audio bus.
Now both struct hda_codec and struct hda_codec_driver inherit these
new struct hdac_device and struct hdac_driver, respectively.
The bus registration is done in subsys_initcall() to assure it
before any other driver registrations.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for your net tree,
they are:
1) Fix missing initialization of tuple structure in nfnetlink_cthelper
to avoid mismatches when looking up to attach userspace helpers to
flows, from Ian Wilson.
2) Fix potential crash in nft_hash when we hit -EAGAIN in
nft_hash_walk(), from Herbert Xu.
3) We don't need to indicate the hook information to update the
basechain default policy in nf_tables.
4) Restore tracing over nfnetlink_log due to recent rework to
accomodate logging infrastructure into nf_tables.
5) Fix wrong IP6T_INV_PROTO check in xt_TPROXY.
6) Set IP6T_F_PROTO flag in nft_compat so we can use SYNPROXY6 and
REJECT6 from xt over nftables.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull SCSI target fixes from Nicholas Bellinger:
"Here are current target-pending fixes for v4.0-rc5 code that have made
their way into the queue over the last weeks.
The fixes this round include:
- Fix long-standing iser-target logout bug related to early
conn_logout_comp completion, resulting in iscsi_conn use-after-tree
OOpsen. (Sagi + nab)
- Fix long-standing tcm_fc bug in ft_invl_hw_context() failure
handing for DDP hw offload. (DanC)
- Fix incorrect use of unprotected __transport_register_session() in
tcm_qla2xxx + other single local se_node_acl fabrics. (Bart)
- Fix reference leak in target_submit_cmd() -> target_get_sess_cmd()
for ack_kref=1 failure path. (Bart)
- Fix pSCSI backend ->get_device_type() statistics OOPs with
un-configured device. (Olaf + nab)
- Fix virtual LUN=0 target_configure_device failure OOPs at modprobe
time. (Claudio + nab)
- Fix FUA write false positive failure regression in v4.0-rc1 code.
(Christophe Vu-Brugier + HCH)"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: do not reject FUA CDBs when write cache is enabled but emulate_write_cache is 0
target: Fix virtual LUN=0 target_configure_device failure OOPs
target/pscsi: Fix NULL pointer dereference in get_device_type
tcm_fc: missing curly braces in ft_invl_hw_context()
target: Fix reference leak in target_get_sess_cmd() error path
loop/usb/vhost-scsi/xen-scsiback: Fix use of __transport_register_session
tcm_qla2xxx: Fix incorrect use of __transport_register_session
iscsi-target: Avoid early conn_logout_comp for iser connections
Revert "iscsi-target: Avoid IN_LOGOUT failure case for iser-target"
target: Disallow changing of WRITE cache/FUA attrs after export
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull devicemapper fixes from Mike Snitzer:
"A handful of stable fixes for DM:
- fix thin target to always zero-fill reads to unprovisioned blocks
- fix to interlock device destruction's suspend from internal
suspends
- fix 2 snapshot exception store handover bugs
- fix dm-io to cope with DISCARD and WRITE_SAME capabilities changing"
* tag 'dm-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm io: deal with wandering queue limits when handling REQ_DISCARD and REQ_WRITE_SAME
dm snapshot: suspend merging snapshot when doing exception handover
dm snapshot: suspend origin when doing exception handover
dm: hold suspend_lock while suspending device during device deletion
dm thin: fix to consistently zero-fill reads to unprovisioned blocks
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emulate_write_cache is 0
A check that rejects a CDB with FUA bit set if no write cache is
emulated was added by the following commit:
fde9f50 target: Add sanity checks for DPO/FUA bit usage
The condition is as follows:
if (!dev->dev_attrib.emulate_fua_write ||
!dev->dev_attrib.emulate_write_cache)
However, this check is wrong if the backend device supports WCE but
"emulate_write_cache" is disabled.
This patch uses se_dev_check_wce() (previously named
spc_check_dev_wce) to invoke transport->get_write_cache() if the
device has a write cache or check the "emulate_write_cache" attribute
otherwise.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christophe Vu-Brugier <cvubrugier@fastmail.fm>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Here is a slew of pin control fixes I've accumulated for the v4.0
kernel. Nothing special, just driver fixes (mainly embedded Intel it
seems) and a misunderstanding regarding the stub functions was
reverted:
- Fix up consumer return values on pin control stubs.
- Four patches fixing up the interrupt handling and sleep context
save in the Baytrail driver.
- Make default output directions work properly in the Cherryview
driver.
- Fix interrupt locking in the AT91 driver.
- Fix setting interrupt generating lines as input in the sunxi
driver"
* tag 'pinctrl-v4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: sun4i: GPIOs configured as irq must be set to input before reading
pinctrl: at91: move lock/unlock_as_irq calls into request/release
pinctrl: update direction_output function of cherryview driver
pinctrl: baytrail: Save pin context over system sleep
pinctrl: baytrail: Rework interrupt handling
pinctrl: baytrail: Clear interrupt triggering from pins that are in GPIO mode
pinctrl: baytrail: Relax GPIO request rules
Revert "pinctrl: consumer: use correct retval for placeholder functions"
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This patch fixes a NULL pointer dereference when enabling regmap event
tracing in the presence of a syscon regmap, introduced by commit bdb0066df96e
("mfd: syscon: Decouple syscon interface from platform devices").
That patch introduced syscon regmaps that have their dev field set to NULL.
The regmap trace events expect it to point to a valid struct device and feed
it to dev_name():
$ echo 1 > /sys/kernel/debug/tracing/events/regmap/enable
Unable to handle kernel NULL pointer dereference at virtual address 0000002c
pgd = 80004000
[0000002c] *pgd=00000000
Internal error: Oops: 17 [#1] SMP ARM
Modules linked in: coda videobuf2_vmalloc
CPU: 0 PID: 304 Comm: kworker/0:2 Not tainted 4.0.0-rc2+ #9197
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
Workqueue: events_freezable thermal_zone_device_check
task: 9f25a200 ti: 9f1ee000 task.ti: 9f1ee000
PC is at ftrace_raw_event_regmap_block+0x3c/0xe4
LR is at _regmap_raw_read+0x1bc/0x1cc
pc : [<803636e8>] lr : [<80365f2c>] psr: 600f0093
sp : 9f1efd78 ip : 9f1efdb8 fp : 9f1efdb4
r10: 00000004 r9 : 00000001 r8 : 00000001
r7 : 00000180 r6 : 00000000 r5 : 9f00e3c0 r4 : 00000003
r3 : 00000001 r2 : 00000180 r1 : 00000000 r0 : 9f00e3c0
Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 10c5387d Table: 2d91004a DAC: 00000015
Process kworker/0:2 (pid: 304, stack limit = 0x9f1ee210)
Stack: (0x9f1efd78 to 0x9f1f0000)
fd60: 9f1efda4 9f1efd88
fd80: 800708c0 805f9510 80927140 800f0013 9f1fc800 9eb2f490 00000000 00000180
fda0: 808e3840 00000001 9f1efdfc 9f1efdb8 80365f2c 803636b8 805f8958 800708e0
fdc0: a00f0013 803636ac 9f16de00 00000180 80927140 9f1fc800 9f1fc800 9f1efe6c
fde0: 9f1efe6c 9f732400 00000000 00000000 9f1efe1c 9f1efe00 80365f70 80365d7c
fe00: 80365f3c 9f1fc800 9f1fc800 00000180 9f1efe44 9f1efe20 803656a4 80365f48
fe20: 9f1fc800 00000180 9f1efe6c 9f1efe6c 9f732400 00000000 9f1efe64 9f1efe48
fe40: 803657bc 80365634 00000001 9e95f910 9f1fc800 9f1efeb4 9f1efe8c 9f1efe68
fe60: 80452ac0 80365778 9f1efe8c 9f1efe78 9e93d400 9e93d5e8 9f1efeb4 9f72ef40
fe80: 9f1efeac 9f1efe90 8044e11c 80452998 8045298c 9e93d608 9e93d400 808e1978
fea0: 9f1efecc 9f1efeb0 8044fd14 8044e0d0 ffffffff 9f25a200 9e93d608 9e481380
fec0: 9f1efedc 9f1efed0 8044fde8 8044fcec 9f1eff1c 9f1efee0 80038d50 8044fdd8
fee0: 9f1ee020 9f72ef40 9e481398 00000000 00000008 9f72ef54 9f1ee020 9f72ef40
ff00: 9e481398 9e481380 00000008 9f72ef40 9f1eff5c 9f1eff20 80039754 80038bfc
ff20: 00000000 9e481380 80894100 808e1662 00000000 9e4f2ec0 00000000 9e481380
ff40: 800396f8 00000000 00000000 00000000 9f1effac 9f1eff60 8003e020 80039704
ff60: ffffffff 00000000 ffffffff 9e481380 00000000 00000000 9f1eff78 9f1eff78
ff80: 00000000 00000000 9f1eff88 9f1eff88 9e4f2ec0 8003df30 00000000 00000000
ffa0: 00000000 9f1effb0 8000eb60 8003df3c 00000000 00000000 00000000 00000000
ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 ffffffff ffffffff
Backtrace:
[<803636ac>] (ftrace_raw_event_regmap_block) from [<80365f2c>] (_regmap_raw_read+0x1bc/0x1cc)
r9:00000001 r8:808e3840 r7:00000180 r6:00000000 r5:9eb2f490 r4:9f1fc800
[<80365d70>] (_regmap_raw_read) from [<80365f70>] (_regmap_bus_read+0x34/0x6c)
r10:00000000 r9:00000000 r8:9f732400 r7:9f1efe6c r6:9f1efe6c r5:9f1fc800
r4:9f1fc800
[<80365f3c>] (_regmap_bus_read) from [<803656a4>] (_regmap_read+0x7c/0x144)
r6:00000180 r5:9f1fc800 r4:9f1fc800 r3:80365f3c
[<80365628>] (_regmap_read) from [<803657bc>] (regmap_read+0x50/0x70)
r9:00000000 r8:9f732400 r7:9f1efe6c r6:9f1efe6c r5:00000180 r4:9f1fc800
[<8036576c>] (regmap_read) from [<80452ac0>] (imx_get_temp+0x134/0x1a4)
r6:9f1efeb4 r5:9f1fc800 r4:9e95f910 r3:00000001
[<8045298c>] (imx_get_temp) from [<8044e11c>] (thermal_zone_get_temp+0x58/0x74)
r7:9f72ef40 r6:9f1efeb4 r5:9e93d5e8 r4:9e93d400
[<8044e0c4>] (thermal_zone_get_temp) from [<8044fd14>] (thermal_zone_device_update+0x34/0xec)
r6:808e1978 r5:9e93d400 r4:9e93d608 r3:8045298c
[<8044fce0>] (thermal_zone_device_update) from [<8044fde8>] (thermal_zone_device_check+0x1c/0x20)
r5:9e481380 r4:9e93d608
[<8044fdcc>] (thermal_zone_device_check) from [<80038d50>] (process_one_work+0x160/0x3d4)
[<80038bf0>] (process_one_work) from [<80039754>] (worker_thread+0x5c/0x4f4)
r10:9f72ef40 r9:00000008 r8:9e481380 r7:9e481398 r6:9f72ef40 r5:9f1ee020
r4:9f72ef54
[<800396f8>] (worker_thread) from [<8003e020>] (kthread+0xf0/0x108)
r10:00000000 r9:00000000 r8:00000000 r7:800396f8 r6:9e481380 r5:00000000
r4:9e4f2ec0
[<8003df30>] (kthread) from [<8000eb60>] (ret_from_fork+0x14/0x34)
r7:00000000 r6:00000000 r5:8003df30 r4:9e4f2ec0
Code: e3140040 1a00001a e3140020 1a000016 (e596002c)
---[ end trace 193c15c2494ec960 ]---
Fixes: bdb0066df96e (mfd: syscon: Decouple syscon interface from platform devices)
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
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Pull networking fixes from David Miller:
1) Fix packet header offset calculation in _decode_session6(), from
Hajime Tazaki.
2) Fix route leak in error paths of xfrm_lookup(), from Huaibin Wang.
3) Be sure to clear state properly when scans fail in iwlwifi mvm code,
from Luciano Coelho.
4) iwlwifi tries to stop scans that aren't actually running, also from
Luciano Coelho.
5) mac80211 should drop mesh frames that are not encrypted, fix from
Bob Copeland.
6) Add new device ID to b43 wireless driver for BCM432228 chips, from
Rafał Miłecki.
7) Fix accidental addition of members after variable sized array in
struct tc_u_hnode, from WANG Cong.
8) Don't re-enable interrupts until after we call napi_complete() in
ibmveth and WIZnet drivers, frm Yongbae Park.
9) Fix regression in vlan tag handling of fec driver, from Fugang Duan.
10) If a network namespace change fails during rtnl_newlink(), we don't
unwind the device registry properly.
11) Fix two TCP regressions, from Neal Cardwell:
- Don't allow snd_cwnd_cnt to accumulate huge values due to missing
test in tcp_cong_avoid_ai().
- Restore CUBIC back to advancing cwnd by 1.5x packets per RTT.
12) Fix performance regression in xne-netback involving push TX
notifications, from David Vrabel.
13) __skb_tstamp_tx() can be called with a NULL sk pointer, do not
dereference blindly. From Willem de Bruijn.
14) Fix potential stack overflow in RDS protocol stack, from Arnd
Bergmann.
15) VXLAN_VID_MASK used incorrectly in new remote checksum offload
support of VXLAN driver. Fix from Alexey Kodanev.
16) Fix too small netlink SKB allocation in inet_diag layer, from Eric
Dumazet.
17) ieee80211_check_combinations() does not count interfaces correctly,
from Andrei Otcheretianski.
18) Hardware feature determination in bxn2x driver references a piece of
software state that actually isn't initialized yet, fix from Michal
Schmidt.
19) inet_csk_wait_for_connect() needs a sched_annotate_sleep()
annoation, from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (56 commits)
Revert "net: cx82310_eth: use common match macro"
net/mlx4_en: Set statistics bitmap at port init
IB/mlx4: Saturate RoCE port PMA counters in case of overflow
net/mlx4_en: Fix off-by-one in ethtool statistics display
IB/mlx4: Verify net device validity on port change event
act_bpf: allow non-default TC_ACT opcodes as BPF exec outcome
Revert "smc91x: retrieve IRQ and trigger flags in a modern way"
inet: Clean up inet_csk_wait_for_connect() vs. might_sleep()
ip6_tunnel: fix error code when tunnel exists
netdevice.h: fix ndo_bridge_* comments
bnx2x: fix encapsulation features on 57710/57711
mac80211: ignore CSA to same channel
nl80211: ignore HT/VHT capabilities without QoS/WMM
mac80211: ask for ECSA IE to be considered for beacon parse CRC
mac80211: count interfaces correctly for combination checks
isdn: icn: use strlcpy() when parsing setup options
rxrpc: bogus MSG_PEEK test in rxrpc_recvmsg()
caif: fix MSG_OOB test in caif_seqpkt_recvmsg()
bridge: reset bridge mtu after deleting an interface
can: kvaser_usb: Fix tx queue start/stop race conditions
...
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SAS controller has its own tag allocation, which doesn't directly match to ATA
tag, so SAS and SATA have different code path for ata tags. Originally we use
port->scsi_host (98bd4be1) to destinguish SAS controller, but libsas set
->scsi_host too, so we can't use it for the destinguish, we add a new flag for
this purpose.
Without this patch, the following oops can happen because scsi-mq uses
a host-wide tag map shared among all devices with some integer tag
values >= ATA_MAX_QUEUE. These unexpectedly high tag values cause
__ata_qc_from_tag() to return NULL, which is then dereferenced in
ata_qc_new_init().
BUG: unable to handle kernel NULL pointer dereference at 0000000000000058
IP: [<ffffffff804fd46e>] ata_qc_new_init+0x3e/0x120
PGD 32adf0067 PUD 32adf1067 PMD 0
Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
Modules linked in: iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi igb
i2c_algo_bit ptp pps_core pm80xx libsas scsi_transport_sas sg coretemp
eeprom w83795 i2c_i801
CPU: 4 PID: 1450 Comm: cydiskbench Not tainted 4.0.0-rc3 #1
Hardware name: Supermicro X8DTH-i/6/iF/6F/X8DTH, BIOS 2.1b 05/04/12
task: ffff8800ba86d500 ti: ffff88032a064000 task.ti: ffff88032a064000
RIP: 0010:[<ffffffff804fd46e>] [<ffffffff804fd46e>] ata_qc_new_init+0x3e/0x120
RSP: 0018:ffff88032a067858 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8800ba0d2230 RCX: 000000000000002a
RDX: ffffffff80505ae0 RSI: 0000000000000020 RDI: ffff8800ba0d2230
RBP: ffff88032a067868 R08: 0000000000000201 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800ba0d0000
R13: ffff8800ba0d2230 R14: ffffffff80505ae0 R15: ffff8800ba0d0000
FS: 0000000041223950(0063) GS:ffff88033e480000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000058 CR3: 000000032a0a3000 CR4: 00000000000006e0
Stack:
ffff880329eee758 ffff880329eee758 ffff88032a0678a8 ffffffff80502dad
ffff8800ba167978 ffff880329eee758 ffff88032bf9c520 ffff8800ba167978
ffff88032bf9c520 ffff88032bf9a290 ffff88032a0678b8 ffffffff80506909
Call Trace:
[<ffffffff80502dad>] ata_scsi_translate+0x3d/0x1b0
[<ffffffff80506909>] ata_sas_queuecmd+0x149/0x2a0
[<ffffffffa0046650>] sas_queuecommand+0xa0/0x1f0 [libsas]
[<ffffffff804ea544>] scsi_dispatch_cmd+0xd4/0x1a0
[<ffffffff804eb50f>] scsi_queue_rq+0x66f/0x7f0
[<ffffffff803e5098>] __blk_mq_run_hw_queue+0x208/0x3f0
[<ffffffff803e54b8>] blk_mq_run_hw_queue+0x88/0xc0
[<ffffffff803e5c74>] blk_mq_insert_request+0xc4/0x130
[<ffffffff803e0b63>] blk_execute_rq_nowait+0x73/0x160
[<ffffffffa0023fca>] sg_common_write+0x3da/0x720 [sg]
[<ffffffffa0025100>] sg_new_write+0x250/0x360 [sg]
[<ffffffffa0025feb>] sg_write+0x13b/0x450 [sg]
[<ffffffff8032ec91>] vfs_write+0xd1/0x1b0
[<ffffffff8032ee54>] SyS_write+0x54/0xc0
[<ffffffff80689932>] system_call_fastpath+0x12/0x17
tj: updated description.
Fixes: 12cb5ce101ab ("libata: use blk taging")
Reported-and-tested-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
|
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Since fab4085 ("netfilter: log: nf_log_packet() as real unified
interface"), the loginfo structure that is passed to nf_log_packet() is
used to explicitly indicate the logger type you want to use.
This is a problem for people tracing rules through nfnetlink_log since
packets are always routed to the NF_LOG_TYPE logger after the
aforementioned patch.
We can fix this by removing the trace loginfo structures, but that still
changes the log level from 4 to 5 for tracing messages and there may be
someone relying on this outthere. So let's just introduce a new
nf_log_trace() function that restores the former behaviour.
Reported-by: Markus Kötter <koetter@rrzn.uni-hannover.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching
Pull livepatching fix from Jiri Kosina:
- fix for potential race with module loading, from Petr Mladek.
The race is very unlikely to be seen in real world and has been found
by code inspection, but should be fixed for 4.0 anyway.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: Fix subtle race with coming and going modules
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dev_get_regulator() does not exist, fix the typo.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The argument 'flags' was missing in ndo_bridge_setlink().
ndo_bridge_dellink() was missing.
Fixes: 407af3299ef1 ("bridge: Add netlink interface to configure vlans on bridge ports")
Fixes: add511b38266 ("bridge: add flags argument to ndo_bridge_setlink and ndo_bridge_dellink")
CC: Vlad Yasevich <vyasevic@redhat.com>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull virtio fixes from Rusty Russell:
"Not entirely surprising: the ongoing QEMU work on virtio 1.0 has
revealed more minor issues with our virtio 1.0 drivers just introduced
in the kernel.
(I would normally use my fixes branch for this, but there were a batch
of them...)"
* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
virtio_mmio: fix access width for mmio
uapi/virtio_scsi: allow overriding CDB/SENSE size
virtio_mmio: generation support
virtio_rpmsg: set DRIVER_OK before using device
9p/trans_virtio: fix hot-unplug
virtio-balloon: do not call blocking ops when !TASK_RUNNING
virtio_blk: fix comment for virtio 1.0
virtio_blk: typo fix
virtio_balloon: set DRIVER_OK before using device
virtio_console: avoid config access from irq
virtio_console: init work unconditionally
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Pull kvm fixes from Marcelo Tosatti:
"KVM bug fixes (ARM and x86)"
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
arm/arm64: KVM: Keep elrsr/aisr in sync with software model
KVM: VMX: Set msr bitmap correctly if vcpu is in guest mode
arm/arm64: KVM: fix missing unlock on error in kvm_vgic_create()
kvm: x86: i8259: return initialized data on invalid-size read
arm64: KVM: Fix outdated comment about VTCR_EL2.PS
arm64: KVM: Do not use pgd_index to index stage-2 pgd
arm64: KVM: Fix stage-2 PGD allocation to have per-page refcounting
kvm: move advertising of KVM_CAP_IRQFD to common code
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The register offset for REGEN2_CTRL in different for TPS659038 chip as when
compared with other Palmas family PMICs. In the case of TPS659038 the wrong
offset pointed to PLLEN_CTRL and was causing a hang. Correcting the same.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
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There is a notifier that handles live patches for coming and going modules.
It takes klp_mutex lock to avoid races with coming and going patches but
it does not keep the lock all the time. Therefore the following races are
possible:
1. The notifier is called sometime in STATE_MODULE_COMING. The module
is visible by find_module() in this state all the time. It means that
new patch can be registered and enabled even before the notifier is
called. It might create wrong order of stacked patches, see below
for an example.
2. New patch could still see the module in the GOING state even after
the notifier has been called. It will try to initialize the related
object structures but the module could disappear at any time. There
will stay mess in the structures. It might even cause an invalid
memory access.
This patch solves the problem by adding a boolean variable into struct module.
The value is true after the coming and before the going handler is called.
New patches need to be applied when the value is true and they need to ignore
the module when the value is false.
Note that we need to know state of all modules on the system. The races are
related to new patches. Therefore we do not know what modules will get
patched.
Also note that we could not simply ignore going modules. The code from the
module could be called even in the GOING state until mod->exit() finishes.
If we start supporting patches with semantic changes between function
calls, we need to apply new patches to any still usable code.
See below for an example.
Finally note that the patch solves only the situation when a new patch is
registered. There are no such problems when the patch is being removed.
It does not matter who disable the patch first, whether the normal
disable_patch() or the module notifier. There is nothing to do
once the patch is disabled.
Alternative solutions:
======================
+ reject new patches when a patched module is coming or going; this is ugly
+ wait with adding new patch until the module leaves the COMING and GOING
states; this might be dangerous and complicated; we would need to release
kgr_lock in the middle of the patch registration to avoid a deadlock
with the coming and going handlers; also we might need a waitqueue for
each module which seems to be even bigger overhead than the boolean
+ stop modules from entering COMING and GOING states; wait until modules
leave these states when they are already there; looks complicated; we would
need to ignore the module that asked to stop the others to avoid a deadlock;
also it is unclear what to do when two modules asked to stop others and
both are in COMING state (situation when two new patches are applied)
+ always register/enable new patches and fix up the potential mess (registered
patches order) in klp_module_init(); this is nasty and prone to regressions
in the future development
+ add another MODULE_STATE where the kallsyms are visible but the module is not
used yet; this looks too complex; the module states are checked on "many"
locations
Example of patch stacking breakage:
===================================
The notifier could _not_ _simply_ ignore already initialized module objects.
For example, let's have three patches (P1, P2, P3) for functions a() and b()
where a() is from vmcore and b() is from a module M. Something like:
a() b()
P1 a1() b1()
P2 a2() b2()
P3 a3() b3(3)
If you load the module M after all patches are registered and enabled.
The ftrace ops for function a() and b() has listed the functions in this
order:
ops_a->func_stack -> list(a3,a2,a1)
ops_b->func_stack -> list(b3,b2,b1)
, so the pointer to b3() is the first and will be used.
Then you might have the following scenario. Let's start with state when patches
P1 and P2 are registered and enabled but the module M is not loaded. Then ftrace
ops for b() does not exist. Then we get into the following race:
CPU0 CPU1
load_module(M)
complete_formation()
mod->state = MODULE_STATE_COMING;
mutex_unlock(&module_mutex);
klp_register_patch(P3);
klp_enable_patch(P3);
# STATE 1
klp_module_notify(M)
klp_module_notify_coming(P1);
klp_module_notify_coming(P2);
klp_module_notify_coming(P3);
# STATE 2
The ftrace ops for a() and b() then looks:
STATE1:
ops_a->func_stack -> list(a3,a2,a1);
ops_b->func_stack -> list(b3);
STATE2:
ops_a->func_stack -> list(a3,a2,a1);
ops_b->func_stack -> list(b2,b1,b3);
therefore, b2() is used for the module but a3() is used for vmcore
because they were the last added.
Example of the race with going modules:
=======================================
CPU0 CPU1
delete_module() #SYSCALL
try_stop_module()
mod->state = MODULE_STATE_GOING;
mutex_unlock(&module_mutex);
klp_register_patch()
klp_enable_patch()
#save place to switch universe
b() # from module that is going
a() # from core (patched)
mod->exit();
Note that the function b() can be called until we call mod->exit().
If we do not apply patch against b() because it is in MODULE_STATE_GOING,
it will call patched a() with modified semantic and things might get wrong.
[jpoimboe@redhat.com: use one boolean instead of two]
Signed-off-by: Petr Mladek <pmladek@suse.cz>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
|
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm
Fixes for KVM/ARM for 4.0-rc5.
Fixes page refcounting issues in our Stage-2 page table management code,
fixes a missing unlock in a gicv3 error path, and fixes a race that can
cause lost interrupts if signals are pending just prior to entering the
guest.
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:
====================
pull request (net): ipsec 2015-03-16
1) Fix the network header offset in _decode_session6
when multiple IPv6 extension headers are present.
From Hajime Tazaki.
2) Fix an interfamily tunnel crash. We set outer mode
protocol too early and may dispatch to the wrong
address family. Move the setting of the outer mode
protocol behind the last accessing of the inner mode
to fix the crash.
3) Most callers of xfrm_lookup() expect that dst_orig
is released on error. But xfrm_lookup_route() may
need dst_orig to handle certain error cases. So
introduce a flag that tells what should be done in
case of error. From Huaibin Wang.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clock framework fixes from Michael Turquette:
"The clk fixes for 4.0-rc4 comprise three themes.
First are the usual driver fixes for new regressions since v3.19.
Second are fixes to the common clock divider type caused by recent
changes to how we round clock rates. This affects many clock drivers
that use this common code.
Finally there are fixes for drivers that improperly compared struct
clk pointers (drivers must not deref these pointers). While some of
these drivers have done this for a long time, this did not cause a
problem until we started generating unique struct clk pointers for
every consumer. A new function, clk_is_match was introduced to get
these drivers working again and they are fixed up to no longer deref
the pointers themselves"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
ASoC: kirkwood: fix struct clk pointer comparing
ASoC: fsl_spdif: fix struct clk pointer comparing
ARM: imx: fix struct clk pointer comparing
clk: introduce clk_is_match
clk: don't export static symbol
clk: divider: fix calculation of initial best divider when rounding to closest
clk: divider: fix selection of divider when rounding to closest
clk: divider: fix calculation of maximal parent rate for a given divider
clk: divider: return real rate instead of divider value
clk: qcom: fix platform_no_drv_owner.cocci warnings
clk: qcom: fix platform_no_drv_owner.cocci warnings
clk: qcom: Add PLL4 vote clock
clk: qcom: lcc-msm8960: Fix PLL rate detection
clk: qcom: Fix slimbus n and m val offsets
clk: ti: Fix FAPLL parent enable bit handling
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"This is a rather unpleasantly large set of bug fixes for arm-soc, Most
of them because of cross-tree dependencies for Exynos where we should
have figured out the right path to merge things before the merge
window, and then the maintainer being unable to sort things out in
time during a business trip.
The other changes contained here are the usual collection:
MAINTAINERS file updates
- Gregory Clement is now a co-maintainer for the legacy Marvell EBU
platforms
- A MAINTAINERS entry for the Freescale Vybrid platform that was
added last year
- Matt Porter no longer works as a maintainer on Broadcom SoCs
Build-time issues
- A compile-time error for at91
- Several minor DT fixes on at91, imx, exynos, socfpga, and omap
- The new digicolor platform was not correctly enabled at all
Configuration issues
- Two defconfig fix for regressions using USB on versatile express
and on OMAP3
- Enabling all 8 CPUs on Allwinner/SUNxi
- Enabling the new STiH410 platform to be usable
Bug fixes in platform code
- A missing barrier for socfpga
- Fixing LPDDR1 self-refresh mode on at91
- Fixing RTC interrupt numbers on Exynos3250
- Fixing a cache-coherency issues in CPU power-down on Exynos5
- Multiple small OMAP power management fixes"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (69 commits)
MAINTAINERS: Add myself as co-maintainer to the legacy support of the mvebu SoCs
ARM: at91: pm_slowclock: fix the compilation error
ARM: at91/dt: fix USB high-speed clock to select UTMI
ARM: at91/dt: fix at91 udc compatible strings
ARM: at91/dt: declare matrix node as a syscon device
ARM: vexpress: update CONFIG_USB_ISP1760 option
ARM: digicolor: add the machine directory to Makefile
ARM: STi: Add STiH410 SoC support
MAINTAINERS: add Freescale Vybrid SoC
MAINTAINERS: Remove self as ARM mach-bcm co-maintainer
ARM: imx6sl-evk: set swbst_reg as vbus's parent reg
ARM: imx6qdl-sabresd: set swbst_reg as vbus's parent reg
ARM: at91/dt: at91sam9261: fix clocks and clock-names in udc definition
ARM: OMAP2+: Fix wl12xx on dm3730-evm with mainline u-boot
ARM: OMAP: enable TWL4030_USB in omap2plus_defconfig
ARM: dts: dra7x-evm: avoid possible contention while muxing on CAN lines
ARM: dts: dra7x-evm: Don't use dcan1_rx.gpio1_15 in DCAN pinctrl
ARM: dts: am43xx: fix SLEWCTRL_FAST pinctrl binding
ARM: dts: am33xx: fix SLEWCTRL_FAST pinctrl binding
ARM: dts: OMAP5: fix polling intervals for thermal zones
...
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Pull irqchip fixes from Jason Cooper:
"armada-370-xp:
- Chained per-cpu interrupts
gic{,-v3,v3-its}"
- Various fixes for safer operation"
* tag 'irqchip-fixes-4.0' of git://git.infradead.org/users/jcooper/linux:
irqchip: gicv3-its: Support safe initialization
irqchip: gicv3-its: Define macros for GITS_CTLR fields
irqchip: gicv3-its: Add limitation to page order
irqchip: gicv3-its: Use 64KB page as default granule
irqchip: gicv3-its: Zero itt before handling to hardware
irqchip: gic-v3: Fix out of bounds access to cpu_logical_map
irqchip: gic: Fix unsafe locking reported by lockdep
irqchip: gicv3-its: Fix unsafe locking reported by lockdep
irqchip: gicv3-its: Iterate over PCI aliases to generate ITS configuration
irqchip: gicv3-its: Allocate enough memory for the full range of DeviceID
irqchip: gicv3-its: Fix ITS CPU init
irqchip: armada-370-xp: Fix chained per-cpu interrupts
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There is an interesting bug in the vgic code, which manifests itself
when the KVM run loop has a signal pending or needs a vmid generation
rollover after having disabled interrupts but before actually switching
to the guest.
In this case, we flush the vgic as usual, but we sync back the vgic
state and exit to userspace before entering the guest. The consequence
is that we will be syncing the list registers back to the software model
using the GICH_ELRSR and GICH_EISR from the last execution of the guest,
potentially overwriting a list register containing an interrupt.
This showed up during migration testing where we would capture a state
where the VM has masked the arch timer but there were no interrupts,
resulting in a hung test.
Cc: Marc Zyngier <marc.zyngier@arm.com>
Reported-by: Alex Bennee <alex.bennee@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen bug fixes from David Vrabel:
- fix a PV regression in 3.19.
- fix a dom0 crash on hosts with large numbers of PIRQs.
- prevent pcifront from disabling memory or I/O port access, which may
trigger host crashes.
* tag 'stable/for-linus-4.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen-pciback: limit guest control of command register
xen/events: avoid NULL pointer dereference in dom0 on large machines
xen: Remove trailing semicolon from xenbus_register_frontend() definition
x86/xen: correct bug in p2m list initialization
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree fixes from Rob Herring:
- fix for stdout-path option parsing with added unittest
- fix for stdout-path interaction with earlycon
- several DT unittest fixes
- fix Sparc allmodconfig build error on of_platform_register_reconfig_notifier
- several DT overlay kconfig and build warning fixes
- several DT binding documentation updates
* tag 'devicetree-fixes-for-4.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of/platform: Fix sparc:allmodconfig build
of: unittest: Add options string testcase variants
of: fix handling of '/' in options for of_find_node_by_path()
of/unittest: Fix the wrong expected value in of_selftest_property_string
of/unittest: remove the duplicate of_changeset_init
dt: submitting-patches: clarify that DT maintainers are to be cced on bindings
of: unittest: fix I2C dependency
of/overlay: Remove unused variable
Documentation: DT: Renamed of-serial.txt to 8250.txt
of: Fix premature bootconsole disable with 'stdout-path'
serial: add device tree binding documentation for ETRAX FS UART
of/overlay: Directly include idr.h
of: Drop superfluous dependance for OF_OVERLAY
of: Add vendor prefix for Arasan
of: Add prompt for OF_OVERLAY config
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