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Merge branch 'sched/urgent' into sched/core, to pick up fixes

Browse Source 
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2016-09-05 13:24:11 +02:00
commit 62cc20bcf2
809 changed files with 8939 additions and 4608 deletions
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2
.mailmap
View File

@ -158,6 +158,8 @@ Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Viresh Kumar <vireshk@kernel.org> <viresh.kumar@st.com>
Viresh Kumar <vireshk@kernel.org> <viresh.linux@gmail.com>
Viresh Kumar <vireshk@kernel.org> <viresh.kumar2@arm.com>
Vladimir Davydov <vdavydov.dev@gmail.com> <vdavydov@virtuozzo.com>
Vladimir Davydov <vdavydov.dev@gmail.com> <vdavydov@parallels.com>
Takashi YOSHII <takashi.yoshii.zj@renesas.com>
Yusuke Goda <goda.yusuke@renesas.com>
Gustavo Padovan <gustavo@las.ic.unicamp.br>

2
Documentation/ABI/stable/sysfs-devices
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@ -1,7 +1,7 @@
# Note: This documents additional properties of any device beyond what
# is documented in Documentation/sysfs-rules.txt
What: /sys/devices/*/of_path
What: /sys/devices/*/of_node
Date: February 2015
Contact: Device Tree mailing list <devicetree@vger.kernel.org>
Description:

24
Documentation/PCI/MSI-HOWTO.txt
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@ -94,14 +94,11 @@ has a requirements for a minimum number of vectors the driver can pass a
min_vecs argument set to this limit, and the PCI core will return -ENOSPC
if it can't meet the minimum number of vectors.
The flags argument should normally be set to 0, but can be used to pass the
PCI_IRQ_NOMSI and PCI_IRQ_NOMSIX flag in case a device claims to support
MSI or MSI-X, but the support is broken, or to pass PCI_IRQ_NOLEGACY in
case the device does not support legacy interrupt lines.
By default this function will spread the interrupts around the available
CPUs, but this feature can be disabled by passing the PCI_IRQ_NOAFFINITY
flag.
The flags argument is used to specify which type of interrupt can be used
by the device and the driver (PCI_IRQ_LEGACY, PCI_IRQ_MSI, PCI_IRQ_MSIX).
A convenient short-hand (PCI_IRQ_ALL_TYPES) is also available to ask for
any possible kind of interrupt. If the PCI_IRQ_AFFINITY flag is set,
pci_alloc_irq_vectors() will spread the interrupts around the available CPUs.
To get the Linux IRQ numbers passed to request_irq() and free_irq() and the
vectors, use the following function:
@ -131,7 +128,7 @@ larger than the number supported by the device it will automatically be
capped to the supported limit, so there is no need to query the number of
vectors supported beforehand:
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, 0);
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_ALL_TYPES)
if (nvec < 0)
goto out_err;
@ -140,7 +137,7 @@ interrupts it can request a particular number of interrupts by passing that
number to pci_alloc_irq_vectors() function as both 'min_vecs' and
'max_vecs' parameters:
ret = pci_alloc_irq_vectors(pdev, nvec, nvec, 0);
ret = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_ALL_TYPES);
if (ret < 0)
goto out_err;
@ -148,15 +145,14 @@ The most notorious example of the request type described above is enabling
the single MSI mode for a device. It could be done by passing two 1s as
'min_vecs' and 'max_vecs':
ret = pci_alloc_irq_vectors(pdev, 1, 1, 0);
ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
if (ret < 0)
goto out_err;
Some devices might not support using legacy line interrupts, in which case
the PCI_IRQ_NOLEGACY flag can be used to fail the request if the platform
can't provide MSI or MSI-X interrupts:
the driver can specify that only MSI or MSI-X is acceptable:
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_NOLEGACY);
nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_MSI | PCI_IRQ_MSIX);
if (nvec < 0)
goto out_err;

1
Documentation/PCI/pci.txt
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@ -124,7 +124,6 @@ initialization with a pointer to a structure describing the driver
The ID table is an array of struct pci_device_id entries ending with an
all-zero entry. Definitions with static const are generally preferred.
Use of the deprecated macro DEFINE_PCI_DEVICE_TABLE should be avoided.
Each entry consists of:

1
Documentation/arm64/silicon-errata.txt
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@ -53,6 +53,7 @@ stable kernels.
| ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_832075 |
| ARM | Cortex-A57 | #852523 | N/A |
| ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_834220 |
| ARM | Cortex-A72 | #853709 | N/A |
| ARM | MMU-500 | #841119,#826419 | N/A |
| | | | |
| Cavium | ThunderX ITS | #22375, #24313 | CAVIUM_ERRATUM_22375 |

2
Documentation/conf.py
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@ -131,7 +131,7 @@ pygments_style = 'sphinx'
todo_include_todos = False
primary_domain = 'C'
highlight_language = 'C'
highlight_language = 'guess'
# -- Options for HTML output ----------------------------------------------

7
Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
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@ -16,6 +16,11 @@ Required properties:
- vref-supply: The regulator supply ADC reference voltage.
- #io-channel-cells: Should be 1, see ../iio-bindings.txt
Optional properties:
- resets: Must contain an entry for each entry in reset-names if need support
this option. See ../reset/reset.txt for details.
- reset-names: Must include the name "saradc-apb".
Example:
saradc: saradc@2006c000 {
compatible = "rockchip,saradc";
@ -23,6 +28,8 @@ Example:
interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
clock-names = "saradc", "apb_pclk";
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
#io-channel-cells = <1>;
vref-supply = <&vcc18>;
};

19
Documentation/devicetree/bindings/serial/8250.txt
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@ -42,9 +42,6 @@ Optional properties:
- auto-flow-control: one way to enable automatic flow control support. The
driver is allowed to detect support for the capability even without this
property.
- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD
line respectively. It will use specified GPIO instead of the peripheral
function pin for the UART feature. If unsure, don't specify this property.
Note:
* fsl,ns16550:
@ -66,19 +63,3 @@ Example:
interrupts = <10>;
reg-shift = <2>;
};
Example for OMAP UART using GPIO-based modem control signals:
uart4: serial@49042000 {
compatible = "ti,omap3-uart";
reg = <0x49042000 0x400>;
interrupts = <80>;
ti,hwmods = "uart4";
clock-frequency = <48000000>;
cts-gpios = <&gpio3 5 GPIO_ACTIVE_LOW>;
rts-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>;
dtr-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
dsr-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>;
dcd-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
rng-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
};

10
Documentation/devicetree/bindings/sound/omap-mcpdm.txt
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@ -8,8 +8,6 @@ Required properties:
- interrupts: Interrupt number for McPDM
- interrupt-parent: The parent interrupt controller
- ti,hwmods: Name of the hwmod associated to the McPDM
- clocks: phandle for the pdmclk provider, likely <&twl6040>
- clock-names: Must be "pdmclk"
Example:
@ -21,11 +19,3 @@ mcpdm: mcpdm@40132000 {
interrupt-parent = <&gic>;
ti,hwmods = "mcpdm";
};
In board DTS file the pdmclk needs to be added:
&mcpdm {
clocks = <&twl6040>;
clock-names = "pdmclk";
status = "okay";
};

10
Documentation/devicetree/bindings/thermal/thermal.txt
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@ -62,7 +62,7 @@ For more examples of cooling devices, refer to the example sections below.
Required properties:
- #cooling-cells: Used to provide cooling device specific information
Type: unsigned while referring to it. Must be at least 2, in order
Size: one cell to specify minimum and maximum cooling state used
Size: one cell to specify minimum and maximum cooling state used
in the reference. The first cell is the minimum
cooling state requested and the second cell is
the maximum cooling state requested in the reference.
@ -119,7 +119,7 @@ Required properties:
Optional property:
- contribution: The cooling contribution to the thermal zone of the
Type: unsigned referred cooling device at the referred trip point.
Size: one cell The contribution is a ratio of the sum
Size: one cell The contribution is a ratio of the sum
of all cooling contributions within a thermal zone.
Note: Using the THERMAL_NO_LIMIT (-1UL) constant in the cooling-device phandle
@ -145,7 +145,7 @@ Required properties:
Size: one cell
- thermal-sensors: A list of thermal sensor phandles and sensor specifier
Type: list of used while monitoring the thermal zone.
Type: list of used while monitoring the thermal zone.
phandles + sensor
specifier
@ -473,7 +473,7 @@ thermal-zones {
<&adc>; /* pcb north */
/* hotspot = 100 * bandgap - 120 * adc + 484 */
coefficients = <100 -120 484>;
coefficients = <100 -120 484>;
trips {
...
@ -502,7 +502,7 @@ from the ADC sensor. The binding would be then:
thermal-sensors = <&adc>;
/* hotspot = 1 * adc + 6000 */
coefficients = <1 6000>;
coefficients = <1 6000>;
(d) - Board thermal

8
Documentation/filesystems/overlayfs.txt
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@ -183,12 +183,10 @@ The copy_up operation essentially creates a new, identical file and
moves it over to the old name. The new file may be on a different
filesystem, so both st_dev and st_ino of the file may change.
Any open files referring to this inode will access the old data and
metadata. Similarly any file locks obtained before copy_up will not
apply to the copied up file.
Any open files referring to this inode will access the old data.
On a file opened with O_RDONLY fchmod(2), fchown(2), futimesat(2) and
fsetxattr(2) will fail with EROFS.
Any file locks (and leases) obtained before copy_up will not apply
to the copied up file.
If a file with multiple hard links is copied up, then this will
"break" the link. Changes will not be propagated to other names

4
Documentation/hwmon/ftsteutates
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@ -19,5 +19,5 @@ enhancements. It can monitor up to 4 voltages, 16 temperatures and
implemented in this driver.
Specification of the chip can be found here:
ftp:///pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/BMC-Teutates_Specification_V1.21.pdf
ftp:///pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/Fujitsu_mainboards-1-Sensors_HowTo-en-US.pdf
ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/BMC-Teutates_Specification_V1.21.pdf
ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/Fujitsu_mainboards-1-Sensors_HowTo-en-US.pdf

6
Documentation/kernel-documentation.rst
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@ -366,8 +366,6 @@ Domain`_ references.
Cross-referencing from reStructuredText
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. highlight:: none
To cross-reference the functions and types defined in the kernel-doc comments
from reStructuredText documents, please use the `Sphinx C Domain`_
references. For example::
@ -390,8 +388,6 @@ For further details, please refer to the `Sphinx C Domain`_ documentation.
Function documentation
----------------------
.. highlight:: c
The general format of a function and function-like macro kernel-doc comment is::
/**
@ -572,8 +568,6 @@ DocBook XML [DEPRECATED]
Converting DocBook to Sphinx
----------------------------
.. highlight:: none
Over time, we expect all of the documents under ``Documentation/DocBook`` to be
converted to Sphinx and reStructuredText. For most DocBook XML documents, a good
enough solution is to use the simple ``Documentation/sphinx/tmplcvt`` script,

4
Documentation/kernel-parameters.txt
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@ -3032,6 +3032,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
PAGE_SIZE is used as alignment.
PCI-PCI bridge can be specified, if resource
windows need to be expanded.
To specify the alignment for several
instances of a device, the PCI vendor,
device, subvendor, and subdevice may be
specified, e.g., 4096@pci:8086:9c22:103c:198f
ecrc= Enable/disable PCIe ECRC (transaction layer
end-to-end CRC checking).
bios: Use BIOS/firmware settings. This is the

20
Documentation/networking/dsa/dsa.txt
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@ -587,26 +587,6 @@ of DSA, would be the its port-based VLAN, used by the associated bridge device.
TODO
====
The platform device problem
---------------------------
DSA is currently implemented as a platform device driver which is far from ideal
as was discussed in this thread:
http://permalink.gmane.org/gmane.linux.network/329848
This basically prevents the device driver model to be properly used and applied,
and support non-MDIO, non-MMIO Ethernet connected switches.
Another problem with the platform device driver approach is that it prevents the
use of a modular switch drivers build due to a circular dependency, illustrated
here:
http://comments.gmane.org/gmane.linux.network/345803
Attempts of reworking this has been done here:
https://lwn.net/Articles/643149/
Making SWITCHDEV and DSA converge towards an unified codebase
-------------------------------------------------------------

21
Documentation/networking/rxrpc.txt
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@ -790,13 +790,12 @@ The kernel interface functions are as follows:
Data messages can have their contents extracted with the usual bunch of
socket buffer manipulation functions. A data message can be determined to
be the last one in a sequence with rxrpc_kernel_is_data_last(). When a
data message has been used up, rxrpc_kernel_data_delivered() should be
called on it..
data message has been used up, rxrpc_kernel_data_consumed() should be
called on it.
Non-data messages should be handled to rxrpc_kernel_free_skb() to dispose
of. It is possible to get extra refs on all types of message for later
freeing, but this may pin the state of a call until the message is finally
freed.
Messages should be handled to rxrpc_kernel_free_skb() to dispose of. It
is possible to get extra refs on all types of message for later freeing,
but this may pin the state of a call until the message is finally freed.
(*) Accept an incoming call.
@ -821,12 +820,14 @@ The kernel interface functions are as follows:
Other errors may be returned if the call had been aborted (-ECONNABORTED)
or had timed out (-ETIME).
(*) Record the delivery of a data message and free it.
(*) Record the delivery of a data message.
void rxrpc_kernel_data_delivered(struct sk_buff *skb);
void rxrpc_kernel_data_consumed(struct rxrpc_call *call,
struct sk_buff *skb);
This is used to record a data message as having been delivered and to
update the ACK state for the call. The socket buffer will be freed.
This is used to record a data message as having been consumed and to
update the ACK state for the call. The message must still be passed to
rxrpc_kernel_free_skb() for disposal by the caller.
(*) Free a message.

27
Documentation/power/basic-pm-debugging.txt
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@ -164,7 +164,32 @@ load n/2 modules more and try again.
Again, if you find the offending module(s), it(they) must be unloaded every time
before hibernation, and please report the problem with it(them).
c) Advanced debugging
c) Using the "test_resume" hibernation option
/sys/power/disk generally tells the kernel what to do after creating a
hibernation image. One of the available options is "test_resume" which
causes the just created image to be used for immediate restoration. Namely,
after doing:
# echo test_resume > /sys/power/disk
# echo disk > /sys/power/state
a hibernation image will be created and a resume from it will be triggered
immediately without involving the platform firmware in any way.
That test can be used to check if failures to resume from hibernation are
related to bad interactions with the platform firmware. That is, if the above
works every time, but resume from actual hibernation does not work or is
unreliable, the platform firmware may be responsible for the failures.
On architectures and platforms that support using different kernels to restore
hibernation images (that is, the kernel used to read the image from storage and
load it into memory is different from the one included in the image) or support
kernel address space randomization, it also can be used to check if failures
to resume may be related to the differences between the restore and image
kernels.
d) Advanced debugging
In case that hibernation does not work on your system even in the minimal
configuration and compiling more drivers as modules is not practical or some

117
Documentation/power/interface.txt
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@ -1,75 +1,76 @@
Power Management Interface
Power Management Interface for System Sleep
Copyright (c) 2016 Intel Corp., Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The power management subsystem provides a unified sysfs interface to
userspace, regardless of what architecture or platform one is
running. The interface exists in /sys/power/ directory (assuming sysfs
is mounted at /sys).
The power management subsystem provides userspace with a unified sysfs interface
for system sleep regardless of the underlying system architecture or platform.
The interface is located in the /sys/power/ directory (assuming that sysfs is
mounted at /sys).
/sys/power/state controls system power state. Reading from this file
returns what states are supported, which is hard-coded to 'freeze',
'standby' (Power-On Suspend), 'mem' (Suspend-to-RAM), and 'disk'
(Suspend-to-Disk).
/sys/power/state is the system sleep state control file.
Writing to this file one of those strings causes the system to
transition into that state. Please see the file
Documentation/power/states.txt for a description of each of those
states.
Reading from it returns a list of supported sleep states, encoded as:
'freeze' (Suspend-to-Idle)
'standby' (Power-On Suspend)
'mem' (Suspend-to-RAM)
'disk' (Suspend-to-Disk)
/sys/power/disk controls the operating mode of the suspend-to-disk
mechanism. Suspend-to-disk can be handled in several ways. We have a
few options for putting the system to sleep - using the platform driver
(e.g. ACPI or other suspend_ops), powering off the system or rebooting the
system (for testing).
Suspend-to-Idle is always supported. Suspend-to-Disk is always supported
too as long the kernel has been configured to support hibernation at all
(ie. CONFIG_HIBERNATION is set in the kernel configuration file). Support
for Suspend-to-RAM and Power-On Suspend depends on the capabilities of the
platform.
Additionally, /sys/power/disk can be used to turn on one of the two testing
modes of the suspend-to-disk mechanism: 'testproc' or 'test'. If the
suspend-to-disk mechanism is in the 'testproc' mode, writing 'disk' to
/sys/power/state will cause the kernel to disable nonboot CPUs and freeze
tasks, wait for 5 seconds, unfreeze tasks and enable nonboot CPUs. If it is
in the 'test' mode, writing 'disk' to /sys/power/state will cause the kernel
to disable nonboot CPUs and freeze tasks, shrink memory, suspend devices, wait
for 5 seconds, resume devices, unfreeze tasks and enable nonboot CPUs. Then,
we are able to look in the log messages and work out, for example, which code
is being slow and which device drivers are misbehaving.
If one of the strings listed in /sys/power/state is written to it, the system
will attempt to transition into the corresponding sleep state. Refer to
Documentation/power/states.txt for a description of each of those states.
Reading from this file will display all supported modes and the currently
selected one in brackets, for example
/sys/power/disk controls the operating mode of hibernation (Suspend-to-Disk).
Specifically, it tells the kernel what to do after creating a hibernation image.
[shutdown] reboot test testproc
Reading from it returns a list of supported options encoded as:
Writing to this file will accept one of
'platform' (put the system into sleep using a platform-provided method)
'shutdown' (shut the system down)
'reboot' (reboot the system)
'suspend' (trigger a Suspend-to-RAM transition)
'test_resume' (resume-after-hibernation test mode)
'platform' (only if the platform supports it)
'shutdown'
'reboot'
'testproc'
'test'
The currently selected option is printed in square brackets.
/sys/power/image_size controls the size of the image created by
the suspend-to-disk mechanism. It can be written a string
representing a non-negative integer that will be used as an upper
limit of the image size, in bytes. The suspend-to-disk mechanism will
do its best to ensure the image size will not exceed that number. However,
if this turns out to be impossible, it will try to suspend anyway using the
smallest image possible. In particular, if "0" is written to this file, the
suspend image will be as small as possible.
The 'platform' option is only available if the platform provides a special
mechanism to put the system to sleep after creating a hibernation image (ACPI
does that, for example). The 'suspend' option is available if Suspend-to-RAM
is supported. Refer to Documentation/power/basic_pm_debugging.txt for the
description of the 'test_resume' option.
Reading from this file will display the current image size limit, which
is set to 2/5 of available RAM by default.
To select an option, write the string representing it to /sys/power/disk.
/sys/power/pm_trace controls the code which saves the last PM event point in
the RTC across reboots, so that you can debug a machine that just hangs
during suspend (or more commonly, during resume). Namely, the RTC is only
used to save the last PM event point if this file contains '1'. Initially it
contains '0' which may be changed to '1' by writing a string representing a
nonzero integer into it.
/sys/power/image_size controls the size of hibernation images.
To use this debugging feature you should attempt to suspend the machine, then
reboot it and run
It can be written a string representing a non-negative integer that will be
used as a best-effort upper limit of the image size, in bytes. The hibernation
core will do its best to ensure that the image size will not exceed that number.
However, if that turns out to be impossible to achieve, a hibernation image will
still be created and its size will be as small as possible. In particular,
writing '0' to this file will enforce hibernation images to be as small as
possible.
dmesg -s 1000000 | grep 'hash matches'
Reading from this file returns the current image size limit, which is set to
around 2/5 of available RAM by default.
CAUTION: Using it will cause your machine's real-time (CMOS) clock to be
set to a random invalid time after a resume.
/sys/power/pm_trace controls the PM trace mechanism saving the last suspend
or resume event point in the RTC across reboots.
It helps to debug hard lockups or reboots due to device driver failures that
occur during system suspend or resume (which is more common) more effectively.
If /sys/power/pm_trace contains '1', the fingerprint of each suspend/resume
event point in turn will be stored in the RTC memory (overwriting the actual
RTC information), so it will survive a system crash if one occurs right after
storing it and it can be used later to identify the driver that caused the crash
to happen (see Documentation/power/s2ram.txt for more information).
Initially it contains '0' which may be changed to '1' by writing a string
representing a nonzero integer into it.

2
Documentation/powerpc/transactional_memory.txt
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@ -167,6 +167,8 @@ signal will be rolled back anyway.
For signals taken in non-TM or suspended mode, we use the
normal/non-checkpointed stack pointer.
Any transaction initiated inside a sighandler and suspended on return
from the sighandler to the kernel will get reclaimed and discarded.
Failure cause codes used by kernel
==================================

4
Documentation/rapidio/mport_cdev.txt
View File

@ -80,6 +80,10 @@ functionality of their platform when planning to use this driver:
III. Module parameters
- 'dma_timeout' - DMA transfer completion timeout (in msec, default value 3000).
This parameter set a maximum completion wait time for SYNC mode DMA
transfer requests and for RIO_WAIT_FOR_ASYNC ioctl requests.
- 'dbg_level' - This parameter allows to control amount of debug information
generated by this device driver. This parameter is formed by set of
bit masks that correspond to the specific functional blocks.

3
Documentation/sphinx-static/theme_overrides.css
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@ -42,11 +42,12 @@
caption a.headerlink { opacity: 0; }
caption a.headerlink:hover { opacity: 1; }
/* inline literal: drop the borderbox and red color */
/* inline literal: drop the borderbox, padding and red color */
code, .rst-content tt, .rst-content code {
color: inherit;
border: none;
padding: unset;
background: inherit;
font-size: 85%;
}

28
MAINTAINERS
View File

@ -798,6 +798,7 @@ M: Laura Abbott <labbott@redhat.com>
M: Sumit Semwal <sumit.semwal@linaro.org>
L: devel@driverdev.osuosl.org
S: Supported
F: Documentation/devicetree/bindings/staging/ion/
F: drivers/staging/android/ion
F: drivers/staging/android/uapi/ion.h
F: drivers/staging/android/uapi/ion_test.h
@ -881,6 +882,15 @@ S: Supported
F: drivers/gpu/drm/arc/
F: Documentation/devicetree/bindings/display/snps,arcpgu.txt
ARM ARCHITECTED TIMER DRIVER
M: Mark Rutland <mark.rutland@arm.com>
M: Marc Zyngier <marc.zyngier@arm.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: arch/arm/include/asm/arch_timer.h
F: arch/arm64/include/asm/arch_timer.h
F: drivers/clocksource/arm_arch_timer.c
ARM HDLCD DRM DRIVER
M: Liviu Dudau <liviu.dudau@arm.com>
S: Supported
@ -3238,7 +3248,7 @@ F: kernel/cpuset.c
CONTROL GROUP - MEMORY RESOURCE CONTROLLER (MEMCG)
M: Johannes Weiner <hannes@cmpxchg.org>
M: Michal Hocko <mhocko@kernel.org>
M: Vladimir Davydov <vdavydov@virtuozzo.com>
M: Vladimir Davydov <vdavydov.dev@gmail.com>
L: cgroups@vger.kernel.org
L: linux-mm@kvack.org
S: Maintained
@ -4525,6 +4535,12 @@ L: linux-edac@vger.kernel.org
S: Maintained
F: drivers/edac/sb_edac.c
EDAC-SKYLAKE
M: Tony Luck <tony.luck@intel.com>
L: linux-edac@vger.kernel.org
S: Maintained
F: drivers/edac/skx_edac.c
EDAC-XGENE
APPLIED MICRO (APM) X-GENE SOC EDAC
M: Loc Ho <lho@apm.com>
@ -7655,7 +7671,7 @@ L: linux-rdma@vger.kernel.org
S: Supported
W: https://github.com/SoftRoCE/rxe-dev/wiki/rxe-dev:-Home
Q: http://patchwork.kernel.org/project/linux-rdma/list/
F: drivers/infiniband/hw/rxe/
F: drivers/infiniband/sw/rxe/
F: include/uapi/rdma/rdma_user_rxe.h
MEMBARRIER SUPPORT
@ -11217,12 +11233,8 @@ S: Odd Fixes
F: drivers/staging/vt665?/
STAGING - WILC1000 WIFI DRIVER
M: Johnny Kim <johnny.kim@atmel.com>
M: Austin Shin <austin.shin@atmel.com>
M: Chris Park <chris.park@atmel.com>
M: Tony Cho <tony.cho@atmel.com>
M: Glen Lee <glen.lee@atmel.com>
M: Leo Kim <leo.kim@atmel.com>
M: Aditya Shankar <aditya.shankar@microchip.com>
M: Ganesh Krishna <ganesh.krishna@microchip.com>
L: linux-wireless@vger.kernel.org
S: Supported
F: drivers/staging/wilc1000/

2
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 4
PATCHLEVEL = 8
SUBLEVEL = 0
EXTRAVERSION = -rc2
EXTRAVERSION = -rc5
NAME = Psychotic Stoned Sheep
# *DOCUMENTATION*

4
arch/arc/include/asm/entry.h
View File

@ -142,7 +142,7 @@
#ifdef CONFIG_ARC_CURR_IN_REG
; Retrieve orig r25 and save it with rest of callee_regs
ld.as r12, [r12, PT_user_r25]
ld r12, [r12, PT_user_r25]
PUSH r12
#else
PUSH r25
@ -198,7 +198,7 @@
; SP is back to start of pt_regs
#ifdef CONFIG_ARC_CURR_IN_REG
st.as r12, [sp, PT_user_r25]
st r12, [sp, PT_user_r25]
#endif
.endm

2
arch/arc/include/asm/irqflags-compact.h
View File

@ -188,10 +188,10 @@ static inline int arch_irqs_disabled(void)
.endm
.macro IRQ_ENABLE scratch
TRACE_ASM_IRQ_ENABLE
lr \scratch, [status32]
or \scratch, \scratch, (STATUS_E1_MASK | STATUS_E2_MASK)
flag \scratch
TRACE_ASM_IRQ_ENABLE
.endm
#endif /* __ASSEMBLY__ */

2
arch/arc/include/asm/pgtable.h
View File

@ -280,7 +280,7 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
#define pte_page(pte) pfn_to_page(pte_pfn(pte))
#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot)
#define pfn_pte(pfn, prot) (__pte(((pte_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot)))
#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
/* Don't use virt_to_pfn for macros below: could cause truncations for PAE40*/
#define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT)

11
arch/arc/include/uapi/asm/elf.h
View File

@ -13,8 +13,15 @@
/* Machine specific ELF Hdr flags */
#define EF_ARC_OSABI_MSK 0x00000f00
#define EF_ARC_OSABI_ORIG 0x00000000 /* MUST be zero for back-compat */
#define EF_ARC_OSABI_CURRENT 0x00000300 /* v3 (no legacy syscalls) */
#define EF_ARC_OSABI_V3 0x00000300 /* v3 (no legacy syscalls) */
#define EF_ARC_OSABI_V4 0x00000400 /* v4 (64bit data any reg align) */
#if __GNUC__ < 6
#define EF_ARC_OSABI_CURRENT EF_ARC_OSABI_V3
#else
#define EF_ARC_OSABI_CURRENT EF_ARC_OSABI_V4
#endif
typedef unsigned long elf_greg_t;
typedef unsigned long elf_fpregset_t;

2
arch/arc/kernel/arcksyms.c
View File

@ -28,6 +28,7 @@ extern void __muldf3(void);
extern void __divdf3(void);
extern void __floatunsidf(void);
extern void __floatunsisf(void);
extern void __udivdi3(void);
EXPORT_SYMBOL(__ashldi3);
EXPORT_SYMBOL(__ashrdi3);
@ -45,6 +46,7 @@ EXPORT_SYMBOL(__muldf3);
EXPORT_SYMBOL(__divdf3);
EXPORT_SYMBOL(__floatunsidf);
EXPORT_SYMBOL(__floatunsisf);
EXPORT_SYMBOL(__udivdi3);
/* ARC optimised assembler routines */
EXPORT_SYMBOL(memset);

2
arch/arc/kernel/process.c
View File

@ -199,7 +199,7 @@ int elf_check_arch(const struct elf32_hdr *x)
}
eflags = x->e_flags;
if ((eflags & EF_ARC_OSABI_MSK) < EF_ARC_OSABI_CURRENT) {
if ((eflags & EF_ARC_OSABI_MSK) != EF_ARC_OSABI_CURRENT) {
pr_err("ABI mismatch - you need newer toolchain\n");
force_sigsegv(SIGSEGV, current);
return 0;

6
arch/arc/kernel/setup.c
View File

@ -291,8 +291,10 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
cpu->dccm.base_addr, TO_KB(cpu->dccm.sz),
cpu->iccm.base_addr, TO_KB(cpu->iccm.sz));
n += scnprintf(buf + n, len - n,
"OS ABI [v3]\t: no-legacy-syscalls\n");
n += scnprintf(buf + n, len - n, "OS ABI [v%d]\t: %s\n",
EF_ARC_OSABI_CURRENT >> 8,
EF_ARC_OSABI_CURRENT == EF_ARC_OSABI_V3 ?
"no-legacy-syscalls" : "64-bit data any register aligned");
return buf;
}

9
arch/arc/mm/cache.c
View File

@ -921,6 +921,15 @@ void arc_cache_init(void)
printk(arc_cache_mumbojumbo(0, str, sizeof(str)));
/*
* Only master CPU needs to execute rest of function:
* - Assume SMP so all cores will have same cache config so
* any geomtry checks will be same for all
* - IOC setup / dma callbacks only need to be setup once
*/
if (cpu)
return;
if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) {
struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache;

1
arch/arc/mm/highmem.c
View File

@ -61,6 +61,7 @@ void *kmap(struct page *page)
return kmap_high(page);
}
EXPORT_SYMBOL(kmap);
void *kmap_atomic(struct page *page)
{

2
arch/arm/boot/dts/rk3066a.dtsi
View File

@ -197,6 +197,8 @@ tsadc: tsadc@20060000 {
clock-names = "saradc", "apb_pclk";
interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
#io-channel-cells = <1>;
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
status = "disabled";
};

2
arch/arm/boot/dts/rk3288.dtsi
View File

@ -279,6 +279,8 @@ saradc: saradc@ff100000 {
#io-channel-cells = <1>;
clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
clock-names = "saradc", "apb_pclk";
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
status = "disabled";
};

2
arch/arm/boot/dts/rk3xxx.dtsi
View File

@ -399,6 +399,8 @@ saradc: saradc@2006c000 {
#io-channel-cells = <1>;
clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
clock-names = "saradc", "apb_pclk";
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
status = "disabled";
};

1
arch/arm/kernel/entry-armv.S
View File

@ -295,6 +295,7 @@ __und_svc_fault:
bl __und_fault
__und_svc_finish:
get_thread_info tsk
ldr r5, [sp, #S_PSR] @ Get SVC cpsr
svc_exit r5 @ return from exception
UNWIND(.fnend )

2
arch/arm/kvm/mmu.c
View File

@ -1309,7 +1309,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
smp_rmb();
pfn = gfn_to_pfn_prot(kvm, gfn, write_fault, &writable);
if (is_error_pfn(pfn))
if (is_error_noslot_pfn(pfn))
return -EFAULT;
if (kvm_is_device_pfn(pfn)) {

6
arch/arm/mach-imx/gpc.c
View File

@ -271,6 +271,12 @@ static int __init imx_gpc_init(struct device_node *node,
for (i = 0; i < IMR_NUM; i++)
writel_relaxed(~0, gpc_base + GPC_IMR1 + i * 4);
/*
* Clear the OF_POPULATED flag set in of_irq_init so that
* later the GPC power domain driver will not be skipped.
*/
of_node_clear_flag(node, OF_POPULATED);
return 0;
}
IRQCHIP_DECLARE(imx_gpc, "fsl,imx6q-gpc", imx_gpc_init);

3
arch/arm/mach-pxa/idp.c
View File

@ -83,7 +83,8 @@ static struct resource smc91x_resources[] = {
};
static struct smc91x_platdata smc91x_platdata = {
.flags = SMC91X_USE_32BIT | SMC91X_USE_DMA | SMC91X_NOWAIT,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_USE_DMA | SMC91X_NOWAIT,
};
static struct platform_device smc91x_device = {

3
arch/arm/mach-pxa/xcep.c
View File

@ -120,7 +120,8 @@ static struct resource smc91x_resources[] = {
};
static struct smc91x_platdata xcep_smc91x_info = {
.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_NOWAIT | SMC91X_USE_DMA,
};
static struct platform_device smc91x_device = {

3
arch/arm/mach-realview/core.c
View File

@ -93,7 +93,8 @@ static struct smsc911x_platform_config smsc911x_config = {
};
static struct smc91x_platdata smc91x_platdata = {
.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_NOWAIT,
};
static struct platform_device realview_eth_device = {

2
arch/arm/mach-sa1100/pleb.c
View File

@ -45,7 +45,7 @@ static struct resource smc91x_resources[] = {
};
static struct smc91x_platdata smc91x_platdata = {
.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
.flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT,
};
static struct platform_device smc91x_device = {

21
arch/arm/mm/mmu.c
View File

@ -728,7 +728,8 @@ static void *__init late_alloc(unsigned long sz)
{
void *ptr = (void *)__get_free_pages(PGALLOC_GFP, get_order(sz));
BUG_ON(!ptr);
if (!ptr || !pgtable_page_ctor(virt_to_page(ptr)))
BUG();
return ptr;
}
@ -1155,10 +1156,19 @@ void __init sanity_check_meminfo(void)
{
phys_addr_t memblock_limit = 0;
int highmem = 0;
phys_addr_t vmalloc_limit = __pa(vmalloc_min - 1) + 1;
u64 vmalloc_limit;
struct memblock_region *reg;
bool should_use_highmem = false;
/*
* Let's use our own (unoptimized) equivalent of __pa() that is
* not affected by wrap-arounds when sizeof(phys_addr_t) == 4.
* The result is used as the upper bound on physical memory address
* and may itself be outside the valid range for which phys_addr_t
* and therefore __pa() is defined.
*/
vmalloc_limit = (u64)(uintptr_t)vmalloc_min - PAGE_OFFSET + PHYS_OFFSET;
for_each_memblock(memory, reg) {
phys_addr_t block_start = reg->base;
phys_addr_t block_end = reg->base + reg->size;
@ -1183,10 +1193,11 @@ void __init sanity_check_meminfo(void)
if (reg->size > size_limit) {
phys_addr_t overlap_size = reg->size - size_limit;
pr_notice("Truncating RAM at %pa-%pa to -%pa",
&block_start, &block_end, &vmalloc_limit);
memblock_remove(vmalloc_limit, overlap_size);
pr_notice("Truncating RAM at %pa-%pa",
&block_start, &block_end);
block_end = vmalloc_limit;
pr_cont(" to -%pa", &block_end);
memblock_remove(vmalloc_limit, overlap_size);
should_use_highmem = true;
}
}

2
arch/arm/xen/enlighten.c
View File

@ -50,7 +50,7 @@ DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
static struct vcpu_info __percpu *xen_vcpu_info;
/* Linux <-> Xen vCPU id mapping */
DEFINE_PER_CPU(int, xen_vcpu_id) = -1;
DEFINE_PER_CPU(uint32_t, xen_vcpu_id);
EXPORT_PER_CPU_SYMBOL(xen_vcpu_id);
/* These are unused until we support booting "pre-ballooned" */

2
arch/arm64/boot/dts/rockchip/rk3368.dtsi
View File

@ -270,6 +270,8 @@ saradc: saradc@ff100000 {
#io-channel-cells = <1>;
clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
clock-names = "saradc", "apb_pclk";
resets = <&cru SRST_SARADC>;
reset-names = "saradc-apb";
status = "disabled";
};

3
arch/arm64/kernel/head.S
View File

@ -757,6 +757,9 @@ ENTRY(__enable_mmu)
isb
bl __create_page_tables // recreate kernel mapping
tlbi vmalle1 // Remove any stale TLB entries
dsb nsh
msr sctlr_el1, x19 // re-enable the MMU
isb
ic iallu // flush instructions fetched

10
arch/arm64/kernel/sleep.S
View File

@ -101,12 +101,20 @@ ENTRY(cpu_resume)
bl el2_setup // if in EL2 drop to EL1 cleanly
/* enable the MMU early - so we can access sleep_save_stash by va */
adr_l lr, __enable_mmu /* __cpu_setup will return here */
ldr x27, =_cpu_resume /* __enable_mmu will branch here */
adr_l x27, _resume_switched /* __enable_mmu will branch here */
adrp x25, idmap_pg_dir
adrp x26, swapper_pg_dir
b __cpu_setup
ENDPROC(cpu_resume)
.pushsection ".idmap.text", "ax"
_resume_switched:
ldr x8, =_cpu_resume
br x8
ENDPROC(_resume_switched)
.ltorg
.popsection
ENTRY(_cpu_resume)
mrs x1, mpidr_el1
adrp x8, mpidr_hash

2
arch/arm64/kvm/hyp/switch.c
View File

@ -256,7 +256,7 @@ static int __hyp_text __guest_run(struct kvm_vcpu *vcpu)
/*
* We must restore the 32-bit state before the sysregs, thanks
* to Cortex-A57 erratum #852523.
* to erratum #852523 (Cortex-A57) or #853709 (Cortex-A72).
*/
__sysreg32_restore_state(vcpu);
__sysreg_restore_guest_state(guest_ctxt);

10
arch/arm64/kvm/sys_regs.c
View File

@ -823,14 +823,6 @@ static bool access_pmuserenr(struct kvm_vcpu *vcpu, struct sys_reg_params *p,
* Architected system registers.
* Important: Must be sorted ascending by Op0, Op1, CRn, CRm, Op2
*
* We could trap ID_DFR0 and tell the guest we don't support performance
* monitoring. Unfortunately the patch to make the kernel check ID_DFR0 was
* NAKed, so it will read the PMCR anyway.
*
* Therefore we tell the guest we have 0 counters. Unfortunately, we
* must always support PMCCNTR (the cycle counter): we just RAZ/WI for
* all PM registers, which doesn't crash the guest kernel at least.
*
* Debug handling: We do trap most, if not all debug related system
* registers. The implementation is good enough to ensure that a guest
* can use these with minimal performance degradation. The drawback is
@ -1360,7 +1352,7 @@ static const struct sys_reg_desc cp15_regs[] = {
{ Op1( 0), CRn(10), CRm( 3), Op2( 1), access_vm_reg, NULL, c10_AMAIR1 },
/* ICC_SRE */
{ Op1( 0), CRn(12), CRm(12), Op2( 5), trap_raz_wi },
{ Op1( 0), CRn(12), CRm(12), Op2( 5), access_gic_sre },
{ Op1( 0), CRn(13), CRm( 0), Op2( 1), access_vm_reg, NULL, c13_CID },

6
arch/arm64/mm/dump.c
View File

@ -242,7 +242,7 @@ static void note_page(struct pg_state *st, unsigned long addr, unsigned level,
static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start)
{
pte_t *pte = pte_offset_kernel(pmd, 0);
pte_t *pte = pte_offset_kernel(pmd, 0UL);
unsigned long addr;
unsigned i;
@ -254,7 +254,7 @@ static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start)
static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
{
pmd_t *pmd = pmd_offset(pud, 0);
pmd_t *pmd = pmd_offset(pud, 0UL);
unsigned long addr;
unsigned i;
@ -271,7 +271,7 @@ static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
{
pud_t *pud = pud_offset(pgd, 0);
pud_t *pud = pud_offset(pgd, 0UL);
unsigned long addr;
unsigned i;

2
arch/arm64/mm/numa.c
View File

@ -23,6 +23,8 @@
#include <linux/module.h>
#include <linux/of.h>
#include <asm/acpi.h>
struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
EXPORT_SYMBOL(node_data);
nodemask_t numa_nodes_parsed __initdata;

9
arch/arm64/mm/proc.S
View File

@ -100,7 +100,16 @@ ENTRY(cpu_do_resume)
msr tcr_el1, x8
msr vbar_el1, x9
/*
* __cpu_setup() cleared MDSCR_EL1.MDE and friends, before unmasking
* debug exceptions. By restoring MDSCR_EL1 here, we may take a debug
* exception. Mask them until local_dbg_restore() in cpu_suspend()
* resets them.
*/
disable_dbg
msr mdscr_el1, x10
msr sctlr_el1, x12
/*
* Restore oslsr_el1 by writing oslar_el1

3
arch/blackfin/mach-bf561/boards/cm_bf561.c
View File

@ -146,7 +146,8 @@ static struct platform_device hitachi_fb_device = {
#include <linux/smc91x.h>
static struct smc91x_platdata smc91x_info = {
.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_NOWAIT,
.leda = RPC_LED_100_10,
.ledb = RPC_LED_TX_RX,
};

3
arch/blackfin/mach-bf561/boards/ezkit.c
View File

@ -134,7 +134,8 @@ static struct platform_device net2272_bfin_device = {
#include <linux/smc91x.h>
static struct smc91x_platdata smc91x_info = {
.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT,
.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
SMC91X_NOWAIT,
.leda = RPC_LED_100_10,
.ledb = RPC_LED_TX_RX,
};

4
arch/mips/include/asm/page.h
View File

@ -164,7 +164,7 @@ typedef struct { unsigned long pgprot; } pgprot_t;
*/
static inline unsigned long ___pa(unsigned long x)
{
if (config_enabled(CONFIG_64BIT)) {
if (IS_ENABLED(CONFIG_64BIT)) {
/*
* For MIPS64 the virtual address may either be in one of
* the compatibility segements ckseg0 or ckseg1, or it may
@ -173,7 +173,7 @@ static inline unsigned long ___pa(unsigned long x)
return x < CKSEG0 ? XPHYSADDR(x) : CPHYSADDR(x);
}
if (!config_enabled(CONFIG_EVA)) {
if (!IS_ENABLED(CONFIG_EVA)) {
/*
* We're using the standard MIPS32 legacy memory map, ie.
* the address x is going to be in kseg0 or kseg1. We can

2
arch/mips/kvm/mmu.c
View File

@ -40,7 +40,7 @@ static int kvm_mips_map_page(struct kvm *kvm, gfn_t gfn)
srcu_idx = srcu_read_lock(&kvm->srcu);
pfn = gfn_to_pfn(kvm, gfn);
if (is_error_pfn(pfn)) {
if (is_error_noslot_pfn(pfn)) {
kvm_err("Couldn't get pfn for gfn %#llx!\n", gfn);
err = -EFAULT;
goto out;

1
arch/parisc/Kconfig
View File

@ -1,6 +1,5 @@
config PARISC
def_bool y
select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
select ARCH_MIGHT_HAVE_PC_PARPORT
select HAVE_IDE
select HAVE_OPROFILE

1
arch/parisc/configs/c8000_defconfig
View File

@ -245,7 +245,6 @@ CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_PROVE_RCU_DELAY=y
CONFIG_DEBUG_BLOCK_EXT_DEVT=y
CONFIG_LATENCYTOP=y
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
CONFIG_KEYS=y
# CONFIG_CRYPTO_HW is not set
CONFIG_FONTS=y

1
arch/parisc/configs/generic-64bit_defconfig
View File

@ -291,7 +291,6 @@ CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y
# CONFIG_SCHED_DEBUG is not set
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_ECB=m
CONFIG_CRYPTO_PCBC=m

22
arch/parisc/include/asm/uaccess.h
View File

@ -208,13 +208,13 @@ unsigned long copy_in_user(void __user *dst, const void __user *src, unsigned lo
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
extern void copy_from_user_overflow(void)
#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
__compiletime_error("copy_from_user() buffer size is not provably correct")
#else
__compiletime_warning("copy_from_user() buffer size is not provably correct")
#endif
;
extern void __compiletime_error("usercopy buffer size is too small")
__bad_copy_user(void);
static inline void copy_user_overflow(int size, unsigned long count)
{
WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count);
}
static inline unsigned long __must_check copy_from_user(void *to,
const void __user *from,
@ -223,10 +223,12 @@ static inline unsigned long __must_check copy_from_user(void *to,
int sz = __compiletime_object_size(to);
int ret = -EFAULT;
if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n))
if (likely(sz == -1 || sz >= n))
ret = __copy_from_user(to, from, n);
else
copy_from_user_overflow();
else if (!__builtin_constant_p(n))
copy_user_overflow(sz, n);
else
__bad_copy_user();
return ret;
}

4
arch/parisc/include/uapi/asm/errno.h
View File

@ -97,10 +97,10 @@
#define ENOTCONN 235 /* Transport endpoint is not connected */
#define ESHUTDOWN 236 /* Cannot send after transport endpoint shutdown */
#define ETOOMANYREFS 237 /* Too many references: cannot splice */
#define EREFUSED ECONNREFUSED /* for HP's NFS apparently */
#define ETIMEDOUT 238 /* Connection timed out */
#define ECONNREFUSED 239 /* Connection refused */
#define EREMOTERELEASE 240 /* Remote peer released connection */
#define EREFUSED ECONNREFUSED /* for HP's NFS apparently */
#define EREMOTERELEASE 240 /* Remote peer released connection */
#define EHOSTDOWN 241 /* Host is down */
#define EHOSTUNREACH 242 /* No route to host */

8
arch/parisc/kernel/processor.c
View File

@ -51,8 +51,6 @@ EXPORT_SYMBOL(_parisc_requires_coherency);
DEFINE_PER_CPU(struct cpuinfo_parisc, cpu_data);
extern int update_cr16_clocksource(void); /* from time.c */
/*
** PARISC CPU driver - claim "device" and initialize CPU data structures.
**
@ -228,12 +226,6 @@ static int processor_probe(struct parisc_device *dev)
}
#endif
/* If we've registered more than one cpu,
* we'll use the jiffies clocksource since cr16
* is not synchronized between CPUs.
*/
update_cr16_clocksource();
return 0;
}

12
arch/parisc/kernel/time.c
View File

@ -221,18 +221,6 @@ static struct clocksource clocksource_cr16 = {
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
int update_cr16_clocksource(void)
{
/* since the cr16 cycle counters are not synchronized across CPUs,
we'll check if we should switch to a safe clocksource: */
if (clocksource_cr16.rating != 0 && num_online_cpus() > 1) {
clocksource_change_rating(&clocksource_cr16, 0);
return 1;
}
return 0;
}
void __init start_cpu_itimer(void)
{
unsigned int cpu = smp_processor_id();

1
arch/powerpc/include/asm/cputhreads.h
View File

@ -3,6 +3,7 @@
#ifndef __ASSEMBLY__
#include <linux/cpumask.h>
#include <asm/cpu_has_feature.h>
/*
* Mapping of threads to cores

2
arch/powerpc/include/asm/hmi.h
View File

@ -21,7 +21,7 @@
#ifndef __ASM_PPC64_HMI_H__
#define __ASM_PPC64_HMI_H__
#ifdef CONFIG_PPC_BOOK3S_64
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
#define CORE_TB_RESYNC_REQ_BIT 63
#define MAX_SUBCORE_PER_CORE 4

12
arch/powerpc/include/asm/paca.h
View File

@ -183,11 +183,6 @@ struct paca_struct {
*/
u16 in_mce;
u8 hmi_event_available; /* HMI event is available */
/*
* Bitmap for sibling subcore status. See kvm/book3s_hv_ras.c for
* more details
*/
struct sibling_subcore_state *sibling_subcore_state;
#endif
/* Stuff for accurate time accounting */
@ -202,6 +197,13 @@ struct paca_struct {
struct kvmppc_book3s_shadow_vcpu shadow_vcpu;
#endif
struct kvmppc_host_state kvm_hstate;
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
/*
* Bitmap for sibling subcore status. See kvm/book3s_hv_ras.c for
* more details
*/
struct sibling_subcore_state *sibling_subcore_state;
#endif
#endif
};

1
arch/powerpc/include/asm/pci-bridge.h
View File

@ -301,6 +301,7 @@ extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
/* Allocate & free a PCI host bridge structure */
extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev);
extern void pcibios_free_controller(struct pci_controller *phb);
extern void pcibios_free_controller_deferred(struct pci_host_bridge *bridge);
#ifdef CONFIG_PCI
extern int pcibios_vaddr_is_ioport(void __iomem *address);

2
arch/powerpc/kernel/Makefile
View File

@ -41,7 +41,7 @@ obj-$(CONFIG_VDSO32) += vdso32/
obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_ppc970.o cpu_setup_pa6t.o
obj-$(CONFIG_PPC_BOOK3S_64) += cpu_setup_power.o
obj-$(CONFIG_PPC_BOOK3S_64) += mce.o mce_power.o hmi.o
obj-$(CONFIG_PPC_BOOK3S_64) += mce.o mce_power.o
obj-$(CONFIG_PPC_BOOK3E_64) += exceptions-64e.o idle_book3e.o
obj-$(CONFIG_PPC64) += vdso64/
obj-$(CONFIG_ALTIVEC) += vecemu.o

12
arch/powerpc/kernel/entry_64.S
View File

@ -368,13 +368,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
tabort_syscall:
/* Firstly we need to enable TM in the kernel */
mfmsr r10
li r13, 1
rldimi r10, r13, MSR_TM_LG, 63-MSR_TM_LG
li r9, 1
rldimi r10, r9, MSR_TM_LG, 63-MSR_TM_LG
mtmsrd r10, 0
/* tabort, this dooms the transaction, nothing else */
li r13, (TM_CAUSE_SYSCALL|TM_CAUSE_PERSISTENT)
TABORT(R13)
li r9, (TM_CAUSE_SYSCALL|TM_CAUSE_PERSISTENT)
TABORT(R9)
/*
* Return directly to userspace. We have corrupted user register state,
@ -382,8 +382,8 @@ tabort_syscall:
* resume after the tbegin of the aborted transaction with the
* checkpointed register state.
*/
li r13, MSR_RI
andc r10, r10, r13
li r9, MSR_RI
andc r10, r10, r9
mtmsrd r10, 1
mtspr SPRN_SRR0, r11
mtspr SPRN_SRR1, r12

29
arch/powerpc/kernel/exceptions-64s.S
View File

@ -485,7 +485,23 @@ machine_check_fwnmi:
EXCEPTION_PROLOG_0(PACA_EXMC)
machine_check_pSeries_0:
EXCEPTION_PROLOG_1(PACA_EXMC, KVMTEST, 0x200)
EXCEPTION_PROLOG_PSERIES_1(machine_check_common, EXC_STD)
/*
* The following is essentially EXCEPTION_PROLOG_PSERIES_1 with the
* difference that MSR_RI is not enabled, because PACA_EXMC is being
* used, so nested machine check corrupts it. machine_check_common
* enables MSR_RI.
*/
ld r12,PACAKBASE(r13)
ld r10,PACAKMSR(r13)
xori r10,r10,MSR_RI
mfspr r11,SPRN_SRR0
LOAD_HANDLER(r12, machine_check_common)
mtspr SPRN_SRR0,r12
mfspr r12,SPRN_SRR1
mtspr SPRN_SRR1,r10
rfid
b . /* prevent speculative execution */
KVM_HANDLER_SKIP(PACA_EXMC, EXC_STD, 0x200)
KVM_HANDLER_SKIP(PACA_EXGEN, EXC_STD, 0x300)
KVM_HANDLER_SKIP(PACA_EXSLB, EXC_STD, 0x380)
@ -969,14 +985,17 @@ ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
machine_check_common:
mfspr r10,SPRN_DAR
std r10,PACA_EXGEN+EX_DAR(r13)
std r10,PACA_EXMC+EX_DAR(r13)
mfspr r10,SPRN_DSISR
stw r10,PACA_EXGEN+EX_DSISR(r13)
stw r10,PACA_EXMC+EX_DSISR(r13)
EXCEPTION_PROLOG_COMMON(0x200, PACA_EXMC)
FINISH_NAP
RECONCILE_IRQ_STATE(r10, r11)
ld r3,PACA_EXGEN+EX_DAR(r13)
lwz r4,PACA_EXGEN+EX_DSISR(r13)
ld r3,PACA_EXMC+EX_DAR(r13)
lwz r4,PACA_EXMC+EX_DSISR(r13)
/* Enable MSR_RI when finished with PACA_EXMC */
li r10,MSR_RI
mtmsrd r10,1
std r3,_DAR(r1)
std r4,_DSISR(r1)
bl save_nvgprs

2
arch/powerpc/kernel/kprobes.c
View File

@ -29,7 +29,7 @@
#include <linux/kprobes.h>
#include <linux/ptrace.h>
#include <linux/preempt.h>
#include <linux/module.h>
#include <linux/extable.h>
#include <linux/kdebug.h>
#include <linux/slab.h>
#include <asm/code-patching.h>

36
arch/powerpc/kernel/pci-common.c
View File

@ -153,6 +153,42 @@ void pcibios_free_controller(struct pci_controller *phb)
}
EXPORT_SYMBOL_GPL(pcibios_free_controller);
/*
* This function is used to call pcibios_free_controller()
* in a deferred manner: a callback from the PCI subsystem.
*
* _*DO NOT*_ call pcibios_free_controller() explicitly if
* this is used (or it may access an invalid *phb pointer).
*
* The callback occurs when all references to the root bus
* are dropped (e.g., child buses/devices and their users).
*
* It's called as .release_fn() of 'struct pci_host_bridge'
* which is associated with the 'struct pci_controller.bus'
* (root bus) - it expects .release_data to hold a pointer
* to 'struct pci_controller'.
*
* In order to use it, register .release_fn()/release_data
* like this:
*
* pci_set_host_bridge_release(bridge,
* pcibios_free_controller_deferred
* (void *) phb);
*
* e.g. in the pcibios_root_bridge_prepare() callback from
* pci_create_root_bus().
*/
void pcibios_free_controller_deferred(struct pci_host_bridge *bridge)
{
struct pci_controller *phb = (struct pci_controller *)
bridge->release_data;
pr_debug("domain %d, dynamic %d\n", phb->global_number, phb->is_dynamic);
pcibios_free_controller(phb);
}
EXPORT_SYMBOL_GPL(pcibios_free_controller_deferred);
/*
* The function is used to return the minimal alignment
* for memory or I/O windows of the associated P2P bridge.

9
arch/powerpc/kernel/prom_init.c
View File

@ -695,7 +695,7 @@ unsigned char ibm_architecture_vec[] = {
OV4_MIN_ENT_CAP, /* minimum VP entitled capacity */
/* option vector 5: PAPR/OF options */
VECTOR_LENGTH(18), /* length */
VECTOR_LENGTH(21), /* length */
0, /* don't ignore, don't halt */
OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) |
OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) |
@ -726,8 +726,11 @@ unsigned char ibm_architecture_vec[] = {
0,
0,
OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) |
OV5_FEAT(OV5_PFO_HW_842),
OV5_FEAT(OV5_SUB_PROCESSORS),
OV5_FEAT(OV5_PFO_HW_842), /* Byte 17 */
0, /* Byte 18 */
0, /* Byte 19 */
0, /* Byte 20 */
OV5_FEAT(OV5_SUB_PROCESSORS), /* Byte 21 */
/* option vector 6: IBM PAPR hints */
VECTOR_LENGTH(3), /* length */

14
arch/powerpc/kernel/signal_32.c
View File

@ -1226,7 +1226,21 @@ long sys_rt_sigreturn(int r3, int r4, int r5, int r6, int r7, int r8,
(regs->gpr[1] + __SIGNAL_FRAMESIZE + 16);
if (!access_ok(VERIFY_READ, rt_sf, sizeof(*rt_sf)))
goto bad;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
/*
* If there is a transactional state then throw it away.
* The purpose of a sigreturn is to destroy all traces of the
* signal frame, this includes any transactional state created
* within in. We only check for suspended as we can never be
* active in the kernel, we are active, there is nothing better to
* do than go ahead and Bad Thing later.
* The cause is not important as there will never be a
* recheckpoint so it's not user visible.
*/
if (MSR_TM_SUSPENDED(mfmsr()))
tm_reclaim_current(0);
if (__get_user(tmp, &rt_sf->uc.uc_link))
goto bad;
uc_transact = (struct ucontext __user *)(uintptr_t)tmp;

14
arch/powerpc/kernel/signal_64.c
View File

@ -676,7 +676,21 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
if (__copy_from_user(&set, &uc->uc_sigmask, sizeof(set)))
goto badframe;
set_current_blocked(&set);
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
/*
* If there is a transactional state then throw it away.
* The purpose of a sigreturn is to destroy all traces of the
* signal frame, this includes any transactional state created
* within in. We only check for suspended as we can never be
* active in the kernel, we are active, there is nothing better to
* do than go ahead and Bad Thing later.
* The cause is not important as there will never be a
* recheckpoint so it's not user visible.
*/
if (MSR_TM_SUSPENDED(mfmsr()))
tm_reclaim_current(0);
if (__get_user(msr, &uc->uc_mcontext.gp_regs[PT_MSR]))
goto badframe;
if (MSR_TM_ACTIVE(msr)) {

2
arch/powerpc/kernel/smp.c
View File

@ -830,7 +830,7 @@ int __cpu_disable(void)
/* Update sibling maps */
base = cpu_first_thread_sibling(cpu);
for (i = 0; i < threads_per_core; i++) {
for (i = 0; i < threads_per_core && base + i < nr_cpu_ids; i++) {
cpumask_clear_cpu(cpu, cpu_sibling_mask(base + i));
cpumask_clear_cpu(base + i, cpu_sibling_mask(cpu));
cpumask_clear_cpu(cpu, cpu_core_mask(base + i));

3
arch/powerpc/kernel/traps.c
View File

@ -25,7 +25,8 @@
#include <linux/user.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/extable.h>
#include <linux/module.h> /* print_modules */
#include <linux/prctl.h>
#include <linux/delay.h>
#include <linux/kprobes.h>

1
arch/powerpc/kvm/Makefile
View File

@ -78,6 +78,7 @@ kvm-book3s_64-builtin-xics-objs-$(CONFIG_KVM_XICS) := \
ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
kvm-book3s_64-builtin-objs-$(CONFIG_KVM_BOOK3S_64_HANDLER) += \
book3s_hv_hmi.o \
book3s_hv_rmhandlers.o \
book3s_hv_rm_mmu.o \
book3s_hv_ras.o \

0
arch/powerpc/kernel/hmi.c → arch/powerpc/kvm/book3s_hv_hmi.c
View File

2
arch/powerpc/mm/fault.c
View File

@ -26,7 +26,7 @@
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/highmem.h>
#include <linux/module.h>
#include <linux/extable.h>
#include <linux/kprobes.h>
#include <linux/kdebug.h>
#include <linux/perf_event.h>

1
arch/powerpc/platforms/512x/mpc512x_lpbfifo.c
View File

@ -528,7 +528,6 @@ static struct platform_driver mpc512x_lpbfifo_driver = {
.remove = mpc512x_lpbfifo_remove,
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
.of_match_table = mpc512x_lpbfifo_match,
},
};

1
arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c
View File

@ -222,7 +222,6 @@ static const struct of_device_id mcu_of_match_table[] = {
static struct i2c_driver mcu_driver = {
.driver = {
.name = "mcu-mpc8349emitx",
.owner = THIS_MODULE,
.of_match_table = mcu_of_match_table,
},
.probe = mcu_probe,

2
arch/powerpc/platforms/embedded6xx/holly.c
View File

@ -26,7 +26,7 @@
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <linux/of_platform.h>
#include <linux/module.h>
#include <linux/extable.h>
#include <asm/time.h>
#include <asm/machdep.h>

2
arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
View File

@ -23,7 +23,7 @@
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/console.h>
#include <linux/module.h>
#include <linux/extable.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/seq_file.h>

7
arch/powerpc/platforms/powernv/opal-dump.c
View File

@ -370,6 +370,7 @@ static irqreturn_t process_dump(int irq, void *data)
uint32_t dump_id, dump_size, dump_type;
struct dump_obj *dump;
char name[22];
struct kobject *kobj;
rc = dump_read_info(&dump_id, &dump_size, &dump_type);
if (rc != OPAL_SUCCESS)
@ -381,8 +382,12 @@ static irqreturn_t process_dump(int irq, void *data)
* that gracefully and not create two conflicting
* entries.
*/
if (kset_find_obj(dump_kset, name))
kobj = kset_find_obj(dump_kset, name);
if (kobj) {
/* Drop reference added by kset_find_obj() */
kobject_put(kobj);
return 0;
}
dump = create_dump_obj(dump_id, dump_size, dump_type);
if (!dump)

7
arch/powerpc/platforms/powernv/opal-elog.c
View File

@ -247,6 +247,7 @@ static irqreturn_t elog_event(int irq, void *data)
uint64_t elog_type;
int rc;
char name[2+16+1];
struct kobject *kobj;
rc = opal_get_elog_size(&id, &size, &type);
if (rc != OPAL_SUCCESS) {
@ -269,8 +270,12 @@ static irqreturn_t elog_event(int irq, void *data)
* that gracefully and not create two conflicting
* entries.
*/
if (kset_find_obj(elog_kset, name))
kobj = kset_find_obj(elog_kset, name);
if (kobj) {
/* Drop reference added by kset_find_obj() */
kobject_put(kobj);
return IRQ_HANDLED;
}
create_elog_obj(log_id, elog_size, elog_type);

2
arch/powerpc/platforms/powernv/pci-ioda.c
View File

@ -149,7 +149,7 @@ static void pnv_ioda_reserve_pe(struct pnv_phb *phb, int pe_no)
static struct pnv_ioda_pe *pnv_ioda_alloc_pe(struct pnv_phb *phb)
{
unsigned long pe = phb->ioda.total_pe_num - 1;
long pe;
for (pe = phb->ioda.total_pe_num - 1; pe >= 0; pe--) {
if (!test_and_set_bit(pe, phb->ioda.pe_alloc))

4
arch/powerpc/platforms/pseries/pci.c
View File

@ -119,6 +119,10 @@ int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
bus = bridge->bus;
/* Rely on the pcibios_free_controller_deferred() callback. */
pci_set_host_bridge_release(bridge, pcibios_free_controller_deferred,
(void *) pci_bus_to_host(bus));
dn = pcibios_get_phb_of_node(bus);
if (!dn)
return 0;

7
arch/powerpc/platforms/pseries/pci_dlpar.c
View File

@ -106,8 +106,11 @@ int remove_phb_dynamic(struct pci_controller *phb)
release_resource(res);
}
/* Free pci_controller data structure */
pcibios_free_controller(phb);
/*
* The pci_controller data structure is freed by
* the pcibios_free_controller_deferred() callback;
* see pseries_root_bridge_prepare().
*/
return 0;
}

6
arch/powerpc/sysdev/cpm1.c
View File

@ -534,7 +534,8 @@ struct cpm1_gpio16_chip {
static void cpm1_gpio16_save_regs(struct of_mm_gpio_chip *mm_gc)
{
struct cpm1_gpio16_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
struct cpm1_gpio16_chip *cpm1_gc =
container_of(mm_gc, struct cpm1_gpio16_chip, mm_gc);
struct cpm_ioport16 __iomem *iop = mm_gc->regs;
cpm1_gc->cpdata = in_be16(&iop->dat);
@ -649,7 +650,8 @@ struct cpm1_gpio32_chip {
static void cpm1_gpio32_save_regs(struct of_mm_gpio_chip *mm_gc)
{
struct cpm1_gpio32_chip *cpm1_gc = gpiochip_get_data(&mm_gc->gc);
struct cpm1_gpio32_chip *cpm1_gc =
container_of(mm_gc, struct cpm1_gpio32_chip, mm_gc);
struct cpm_ioport32b __iomem *iop = mm_gc->regs;
cpm1_gc->cpdata = in_be32(&iop->dat);

3
arch/powerpc/sysdev/cpm_common.c
View File

@ -94,7 +94,8 @@ struct cpm2_gpio32_chip {
static void cpm2_gpio32_save_regs(struct of_mm_gpio_chip *mm_gc)
{
struct cpm2_gpio32_chip *cpm2_gc = gpiochip_get_data(&mm_gc->gc);
struct cpm2_gpio32_chip *cpm2_gc =
container_of(mm_gc, struct cpm2_gpio32_chip, mm_gc);
struct cpm2_ioports __iomem *iop = mm_gc->regs;
cpm2_gc->cpdata = in_be32(&iop->dat);

2
arch/powerpc/sysdev/fsl_rio.c
View File

@ -23,7 +23,7 @@
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/extable.h>
#include <linux/types.h>
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>

1
arch/s390/Kconfig
View File

@ -68,7 +68,6 @@ config DEBUG_RODATA
config S390
def_bool y
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_GCOV_PROFILE_ALL

11
arch/s390/boot/compressed/head.S
View File

@ -21,16 +21,21 @@ ENTRY(startup_continue)
lg %r15,.Lstack-.LPG1(%r13)
aghi %r15,-160
brasl %r14,decompress_kernel
# setup registers for memory mover & branch to target
# Set up registers for memory mover. We move the decompressed image to
# 0x11000, starting at offset 0x11000 in the decompressed image so
# that code living at 0x11000 in the image will end up at 0x11000 in
# memory.
lgr %r4,%r2
lg %r2,.Loffset-.LPG1(%r13)
la %r4,0(%r2,%r4)
lg %r3,.Lmvsize-.LPG1(%r13)
lgr %r5,%r3
# move the memory mover someplace safe
# Move the memory mover someplace safe so it doesn't overwrite itself.
la %r1,0x200
mvc 0(mover_end-mover,%r1),mover-.LPG1(%r13)
# decompress image is started at 0x11000
# When the memory mover is done we pass control to
# arch/s390/kernel/head64.S:startup_continue which lives at 0x11000 in
# the decompressed image.
lgr %r6,%r2
br %r1
mover:

3
arch/s390/configs/default_defconfig
View File

@ -602,7 +602,6 @@ CONFIG_FAIL_FUTEX=y
CONFIG_FAULT_INJECTION_DEBUG_FS=y
CONFIG_FAULT_INJECTION_STACKTRACE_FILTER=y
CONFIG_LATENCYTOP=y
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
CONFIG_IRQSOFF_TRACER=y
CONFIG_PREEMPT_TRACER=y
CONFIG_SCHED_TRACER=y
@ -678,7 +677,7 @@ CONFIG_CRYPTO_SHA512_S390=m
CONFIG_CRYPTO_DES_S390=m
CONFIG_CRYPTO_AES_S390=m
CONFIG_CRYPTO_GHASH_S390=m
CONFIG_CRYPTO_CRC32_S390=m
CONFIG_CRYPTO_CRC32_S390=y
CONFIG_ASYMMETRIC_KEY_TYPE=y
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=m
CONFIG_X509_CERTIFICATE_PARSER=m

3
arch/s390/configs/gcov_defconfig
View File

@ -552,7 +552,6 @@ CONFIG_NOTIFIER_ERROR_INJECTION=m
CONFIG_CPU_NOTIFIER_ERROR_INJECT=m
CONFIG_PM_NOTIFIER_ERROR_INJECT=m
CONFIG_LATENCYTOP=y
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_KPROBE_EVENT is not set
CONFIG_TRACE_ENUM_MAP_FILE=y
@ -616,7 +615,7 @@ CONFIG_CRYPTO_SHA512_S390=m
CONFIG_CRYPTO_DES_S390=m
CONFIG_CRYPTO_AES_S390=m
CONFIG_CRYPTO_GHASH_S390=m
CONFIG_CRYPTO_CRC32_S390=m
CONFIG_CRYPTO_CRC32_S390=y
CONFIG_ASYMMETRIC_KEY_TYPE=y
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=m
CONFIG_X509_CERTIFICATE_PARSER=m

3
arch/s390/configs/performance_defconfig
View File

@ -549,7 +549,6 @@ CONFIG_TIMER_STATS=y
CONFIG_RCU_TORTURE_TEST=m
CONFIG_RCU_CPU_STALL_TIMEOUT=60
CONFIG_LATENCYTOP=y
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
CONFIG_SCHED_TRACER=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_STACK_TRACER=y
@ -615,7 +614,7 @@ CONFIG_CRYPTO_SHA512_S390=m
CONFIG_CRYPTO_DES_S390=m
CONFIG_CRYPTO_AES_S390=m
CONFIG_CRYPTO_GHASH_S390=m
CONFIG_CRYPTO_CRC32_S390=m
CONFIG_CRYPTO_CRC32_S390=y
CONFIG_ASYMMETRIC_KEY_TYPE=y
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=m
CONFIG_X509_CERTIFICATE_PARSER=m

6
arch/s390/crypto/crc32-vx.c
View File

@ -51,6 +51,9 @@ u32 crc32c_le_vgfm_16(u32 crc, unsigned char const *buf, size_t size);
struct kernel_fpu vxstate; \
unsigned long prealign, aligned, remaining; \
\
if (datalen < VX_MIN_LEN + VX_ALIGN_MASK) \
return ___crc32_sw(crc, data, datalen); \
\
if ((unsigned long)data & VX_ALIGN_MASK) { \
prealign = VX_ALIGNMENT - \
((unsigned long)data & VX_ALIGN_MASK); \
@ -59,9 +62,6 @@ u32 crc32c_le_vgfm_16(u32 crc, unsigned char const *buf, size_t size);
data = (void *)((unsigned long)data + prealign); \
} \
\
if (datalen < VX_MIN_LEN) \
return ___crc32_sw(crc, data, datalen); \
\
aligned = datalen & ~VX_ALIGN_MASK; \
remaining = datalen & VX_ALIGN_MASK; \
\

3
arch/s390/defconfig
View File

@ -172,7 +172,6 @@ CONFIG_DEBUG_NOTIFIERS=y
CONFIG_RCU_CPU_STALL_TIMEOUT=60
CONFIG_RCU_TRACE=y
CONFIG_LATENCYTOP=y
CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
CONFIG_SCHED_TRACER=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_TRACER_SNAPSHOT_PER_CPU_SWAP=y
@ -234,7 +233,7 @@ CONFIG_CRYPTO_SHA256_S390=m
CONFIG_CRYPTO_SHA512_S390=m
CONFIG_CRYPTO_DES_S390=m
CONFIG_CRYPTO_AES_S390=m
CONFIG_CRYPTO_CRC32_S390=m
CONFIG_CRYPTO_CRC32_S390=y
CONFIG_CRC7=m
# CONFIG_XZ_DEC_X86 is not set
# CONFIG_XZ_DEC_POWERPC is not set

19
arch/s390/include/asm/uaccess.h
View File

@ -311,6 +311,14 @@ int __get_user_bad(void) __attribute__((noreturn));
#define __put_user_unaligned __put_user
#define __get_user_unaligned __get_user
extern void __compiletime_error("usercopy buffer size is too small")
__bad_copy_user(void);
static inline void copy_user_overflow(int size, unsigned long count)
{
WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count);
}
/**
* copy_to_user: - Copy a block of data into user space.
* @to: Destination address, in user space.
@ -332,12 +340,6 @@ copy_to_user(void __user *to, const void *from, unsigned long n)
return __copy_to_user(to, from, n);
}
void copy_from_user_overflow(void)
#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
__compiletime_warning("copy_from_user() buffer size is not provably correct")
#endif
;
/**
* copy_from_user: - Copy a block of data from user space.
* @to: Destination address, in kernel space.
@ -362,7 +364,10 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
might_fault();
if (unlikely(sz != -1 && sz < n)) {
copy_from_user_overflow();
if (!__builtin_constant_p(n))
copy_user_overflow(sz, n);
else
__bad_copy_user();
return n;
}
return __copy_from_user(to, from, n);

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