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Merge remote-tracking branch 'torvalds/master' into perf/core
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To pick up fixes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo committed Jan 27, 2021
2 parents cd07e53 + 76c057c commit 70f0ba9
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5 changes: 2 additions & 3 deletions .mailmap
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Expand Up @@ -9,9 +9,6 @@
#
# Please keep this list dictionary sorted.
#
# This comment is parsed by git-shortlog:
# repo-abbrev: /pub/scm/linux/kernel/git/
#
Aaron Durbin <adurbin@google.com>
Adam Oldham <oldhamca@gmail.com>
Adam Radford <aradford@gmail.com>
Expand Down Expand Up @@ -55,6 +52,8 @@ Bart Van Assche <bvanassche@acm.org> <bart.vanassche@wdc.com>
Ben Gardner <bgardner@wabtec.com>
Ben M Cahill <ben.m.cahill@intel.com>
Björn Steinbrink <B.Steinbrink@gmx.de>
Björn Töpel <bjorn@kernel.org> <bjorn.topel@gmail.com>
Björn Töpel <bjorn@kernel.org> <bjorn.topel@intel.com>
Boris Brezillon <bbrezillon@kernel.org> <b.brezillon.dev@gmail.com>
Boris Brezillon <bbrezillon@kernel.org> <b.brezillon@overkiz.com>
Boris Brezillon <bbrezillon@kernel.org> <boris.brezillon@bootlin.com>
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4 changes: 2 additions & 2 deletions Documentation/ABI/testing/sysfs-class-devlink
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Expand Up @@ -5,8 +5,8 @@ Description:
Provide a place in sysfs for the device link objects in the
kernel at any given time. The name of a device link directory,
denoted as ... above, is of the form <supplier>--<consumer>
where <supplier> is the supplier device name and <consumer> is
the consumer device name.
where <supplier> is the supplier bus:device name and <consumer>
is the consumer bus:device name.

What: /sys/class/devlink/.../auto_remove_on
Date: May 2020
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5 changes: 3 additions & 2 deletions Documentation/ABI/testing/sysfs-devices-consumer
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Expand Up @@ -4,5 +4,6 @@ Contact: Saravana Kannan <saravanak@google.com>
Description:
The /sys/devices/.../consumer:<consumer> are symlinks to device
links where this device is the supplier. <consumer> denotes the
name of the consumer in that device link. There can be zero or
more of these symlinks for a given device.
name of the consumer in that device link and is of the form
bus:device name. There can be zero or more of these symlinks
for a given device.
5 changes: 3 additions & 2 deletions Documentation/ABI/testing/sysfs-devices-supplier
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Expand Up @@ -4,5 +4,6 @@ Contact: Saravana Kannan <saravanak@google.com>
Description:
The /sys/devices/.../supplier:<supplier> are symlinks to device
links where this device is the consumer. <supplier> denotes the
name of the supplier in that device link. There can be zero or
more of these symlinks for a given device.
name of the supplier in that device link and is of the form
bus:device name. There can be zero or more of these symlinks
for a given device.
36 changes: 22 additions & 14 deletions Documentation/ABI/testing/sysfs-driver-ufs
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Expand Up @@ -916,21 +916,25 @@ Date: September 2014
Contact: Subhash Jadavani <subhashj@codeaurora.org>
Description: This entry could be used to set or show the UFS device
runtime power management level. The current driver
implementation supports 6 levels with next target states:
implementation supports 7 levels with next target states:

== ====================================================
0 an UFS device will stay active, an UIC link will
0 UFS device will stay active, UIC link will
stay active
1 an UFS device will stay active, an UIC link will
1 UFS device will stay active, UIC link will
hibernate
2 an UFS device will moved to sleep, an UIC link will
2 UFS device will be moved to sleep, UIC link will
stay active
3 an UFS device will moved to sleep, an UIC link will
3 UFS device will be moved to sleep, UIC link will
hibernate
4 an UFS device will be powered off, an UIC link will
4 UFS device will be powered off, UIC link will
hibernate
5 an UFS device will be powered off, an UIC link will
5 UFS device will be powered off, UIC link will
be powered off
6 UFS device will be moved to deep sleep, UIC link
will be powered off. Note, deep sleep might not be
supported in which case this value will not be
accepted
== ====================================================

What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_dev_state
Expand All @@ -954,21 +958,25 @@ Date: September 2014
Contact: Subhash Jadavani <subhashj@codeaurora.org>
Description: This entry could be used to set or show the UFS device
system power management level. The current driver
implementation supports 6 levels with next target states:
implementation supports 7 levels with next target states:

== ====================================================
0 an UFS device will stay active, an UIC link will
0 UFS device will stay active, UIC link will
stay active
1 an UFS device will stay active, an UIC link will
1 UFS device will stay active, UIC link will
hibernate
2 an UFS device will moved to sleep, an UIC link will
2 UFS device will be moved to sleep, UIC link will
stay active
3 an UFS device will moved to sleep, an UIC link will
3 UFS device will be moved to sleep, UIC link will
hibernate
4 an UFS device will be powered off, an UIC link will
4 UFS device will be powered off, UIC link will
hibernate
5 an UFS device will be powered off, an UIC link will
5 UFS device will be powered off, UIC link will
be powered off
6 UFS device will be moved to deep sleep, UIC link
will be powered off. Note, deep sleep might not be
supported in which case this value will not be
accepted
== ====================================================

What: /sys/bus/platform/drivers/ufshcd/*/spm_target_dev_state
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12 changes: 9 additions & 3 deletions Documentation/admin-guide/device-mapper/dm-integrity.rst
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Expand Up @@ -177,14 +177,20 @@ bitmap_flush_interval:number
The bitmap flush interval in milliseconds. The metadata buffers
are synchronized when this interval expires.

allow_discards
Allow block discard requests (a.k.a. TRIM) for the integrity device.
Discards are only allowed to devices using internal hash.

fix_padding
Use a smaller padding of the tag area that is more
space-efficient. If this option is not present, large padding is
used - that is for compatibility with older kernels.

allow_discards
Allow block discard requests (a.k.a. TRIM) for the integrity device.
Discards are only allowed to devices using internal hash.
legacy_recalculate
Allow recalculating of volumes with HMAC keys. This is disabled by
default for security reasons - an attacker could modify the volume,
set recalc_sector to zero, and the kernel would not detect the
modification.

The journal mode (D/J), buffer_sectors, journal_watermark, commit_time and
allow_discards can be changed when reloading the target (load an inactive
Expand Down
27 changes: 6 additions & 21 deletions Documentation/dev-tools/kasan.rst
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Expand Up @@ -160,29 +160,14 @@ intended for use in production as a security mitigation. Therefore it supports
boot parameters that allow to disable KASAN competely or otherwise control
particular KASAN features.

The things that can be controlled are:
- ``kasan=off`` or ``=on`` controls whether KASAN is enabled (default: ``on``).

1. Whether KASAN is enabled at all.
2. Whether KASAN collects and saves alloc/free stacks.
3. Whether KASAN panics on a detected bug or not.
- ``kasan.stacktrace=off`` or ``=on`` disables or enables alloc and free stack
traces collection (default: ``on`` for ``CONFIG_DEBUG_KERNEL=y``, otherwise
``off``).

The ``kasan.mode`` boot parameter allows to choose one of three main modes:

- ``kasan.mode=off`` - KASAN is disabled, no tag checks are performed
- ``kasan.mode=prod`` - only essential production features are enabled
- ``kasan.mode=full`` - all KASAN features are enabled

The chosen mode provides default control values for the features mentioned
above. However it's also possible to override the default values by providing:

- ``kasan.stacktrace=off`` or ``=on`` - enable alloc/free stack collection
(default: ``on`` for ``mode=full``,
otherwise ``off``)
- ``kasan.fault=report`` or ``=panic`` - only print KASAN report or also panic
(default: ``report``)

If ``kasan.mode`` parameter is not provided, it defaults to ``full`` when
``CONFIG_DEBUG_KERNEL`` is enabled, and to ``prod`` otherwise.
- ``kasan.fault=report`` or ``=panic`` controls whether to only print a KASAN
report or also panic the kernel (default: ``report``).

For developers
~~~~~~~~~~~~~~
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57 changes: 57 additions & 0 deletions Documentation/dev-tools/kunit/usage.rst
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Expand Up @@ -522,6 +522,63 @@ There's more boilerplate involved, but it can:
* E.g. if we wanted to also test ``sha256sum``, we could add a ``sha256``
field and reuse ``cases``.

* be converted to a "parameterized test", see below.

Parameterized Testing
~~~~~~~~~~~~~~~~~~~~~

The table-driven testing pattern is common enough that KUnit has special
support for it.

Reusing the same ``cases`` array from above, we can write the test as a
"parameterized test" with the following.

.. code-block:: c
// This is copy-pasted from above.
struct sha1_test_case {
const char *str;
const char *sha1;
};
struct sha1_test_case cases[] = {
{
.str = "hello world",
.sha1 = "2aae6c35c94fcfb415dbe95f408b9ce91ee846ed",
},
{
.str = "hello world!",
.sha1 = "430ce34d020724ed75a196dfc2ad67c77772d169",
},
};
// Need a helper function to generate a name for each test case.
static void case_to_desc(const struct sha1_test_case *t, char *desc)
{
strcpy(desc, t->str);
}
// Creates `sha1_gen_params()` to iterate over `cases`.
KUNIT_ARRAY_PARAM(sha1, cases, case_to_desc);
// Looks no different from a normal test.
static void sha1_test(struct kunit *test)
{
// This function can just contain the body of the for-loop.
// The former `cases[i]` is accessible under test->param_value.
char out[40];
struct sha1_test_case *test_param = (struct sha1_test_case *)(test->param_value);
sha1sum(test_param->str, out);
KUNIT_EXPECT_STREQ_MSG(test, (char *)out, test_param->sha1,
"sha1sum(%s)", test_param->str);
}
// Instead of KUNIT_CASE, we use KUNIT_CASE_PARAM and pass in the
// function declared by KUNIT_ARRAY_PARAM.
static struct kunit_case sha1_test_cases[] = {
KUNIT_CASE_PARAM(sha1_test, sha1_gen_params),
{}
};
.. _kunit-on-non-uml:

KUnit on non-UML architectures
Expand Down
4 changes: 2 additions & 2 deletions Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml
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Expand Up @@ -16,8 +16,8 @@ description:
properties:
compatible:
enum:
- bosch,bmc150
- bosch,bmi055
- bosch,bmc150_accel
- bosch,bmi055_accel
- bosch,bma255
- bosch,bma250e
- bosch,bma222
Expand Down
3 changes: 3 additions & 0 deletions Documentation/networking/tls-offload.rst
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Expand Up @@ -534,3 +534,6 @@ offload. Hence, TLS TX device feature flag requires TX csum offload being set.
Disabling the latter implies clearing the former. Disabling TX checksum offload
should not affect old connections, and drivers should make sure checksum
calculation does not break for them.
Similarly, device-offloaded TLS decryption implies doing RXCSUM. If the user
does not want to enable RX csum offload, TLS RX device feature is disabled
as well.
21 changes: 11 additions & 10 deletions Documentation/virt/kvm/api.rst
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Expand Up @@ -360,10 +360,9 @@ since the last call to this ioctl. Bit 0 is the first page in the
memory slot. Ensure the entire structure is cleared to avoid padding
issues.

If KVM_CAP_MULTI_ADDRESS_SPACE is available, bits 16-31 specifies
the address space for which you want to return the dirty bitmap.
They must be less than the value that KVM_CHECK_EXTENSION returns for
the KVM_CAP_MULTI_ADDRESS_SPACE capability.
If KVM_CAP_MULTI_ADDRESS_SPACE is available, bits 16-31 of slot field specifies
the address space for which you want to return the dirty bitmap. See
KVM_SET_USER_MEMORY_REGION for details on the usage of slot field.

The bits in the dirty bitmap are cleared before the ioctl returns, unless
KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2 is enabled. For more information,
Expand Down Expand Up @@ -1281,6 +1280,9 @@ field userspace_addr, which must point at user addressable memory for
the entire memory slot size. Any object may back this memory, including
anonymous memory, ordinary files, and hugetlbfs.

On architectures that support a form of address tagging, userspace_addr must
be an untagged address.

It is recommended that the lower 21 bits of guest_phys_addr and userspace_addr
be identical. This allows large pages in the guest to be backed by large
pages in the host.
Expand Down Expand Up @@ -1333,7 +1335,7 @@ documentation when it pops into existence).

:Capability: KVM_CAP_ENABLE_CAP_VM
:Architectures: all
:Type: vcpu ioctl
:Type: vm ioctl
:Parameters: struct kvm_enable_cap (in)
:Returns: 0 on success; -1 on error

Expand Down Expand Up @@ -4432,7 +4434,7 @@ to I/O ports.
:Capability: KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2
:Architectures: x86, arm, arm64, mips
:Type: vm ioctl
:Parameters: struct kvm_dirty_log (in)
:Parameters: struct kvm_clear_dirty_log (in)
:Returns: 0 on success, -1 on error

::
Expand All @@ -4459,10 +4461,9 @@ in KVM's dirty bitmap, and dirty tracking is re-enabled for that page
(for example via write-protection, or by clearing the dirty bit in
a page table entry).

If KVM_CAP_MULTI_ADDRESS_SPACE is available, bits 16-31 specifies
the address space for which you want to return the dirty bitmap.
They must be less than the value that KVM_CHECK_EXTENSION returns for
the KVM_CAP_MULTI_ADDRESS_SPACE capability.
If KVM_CAP_MULTI_ADDRESS_SPACE is available, bits 16-31 of slot field specifies
the address space for which you want to clear the dirty status. See
KVM_SET_USER_MEMORY_REGION for details on the usage of slot field.

This ioctl is mostly useful when KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2
is enabled; for more information, see the description of the capability.
Expand Down
24 changes: 17 additions & 7 deletions MAINTAINERS
Original file line number Diff line number Diff line change
Expand Up @@ -3334,7 +3334,7 @@ F: arch/riscv/net/
X: arch/riscv/net/bpf_jit_comp64.c

BPF JIT for RISC-V (64-bit)
M: Björn Töpel <bjorn.topel@gmail.com>
M: Björn Töpel <bjorn@kernel.org>
L: netdev@vger.kernel.org
L: bpf@vger.kernel.org
S: Maintained
Expand Down Expand Up @@ -3879,7 +3879,7 @@ F: Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt
F: drivers/mtd/nand/raw/cadence-nand-controller.c

CADENCE USB3 DRD IP DRIVER
M: Peter Chen <peter.chen@nxp.com>
M: Peter Chen <peter.chen@kernel.org>
M: Pawel Laszczak <pawell@cadence.com>
R: Roger Quadros <rogerq@kernel.org>
R: Aswath Govindraju <a-govindraju@ti.com>
Expand Down Expand Up @@ -4161,7 +4161,7 @@ S: Maintained
F: Documentation/translations/zh_CN/

CHIPIDEA USB HIGH SPEED DUAL ROLE CONTROLLER
M: Peter Chen <Peter.Chen@nxp.com>
M: Peter Chen <peter.chen@kernel.org>
L: linux-usb@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git
Expand Down Expand Up @@ -4311,7 +4311,9 @@ W: https://clangbuiltlinux.github.io/
B: https://github.com/ClangBuiltLinux/linux/issues
C: irc://chat.freenode.net/clangbuiltlinux
F: Documentation/kbuild/llvm.rst
F: include/linux/compiler-clang.h
F: scripts/clang-tools/
F: scripts/clang-version.sh
F: scripts/lld-version.sh
K: \b(?i:clang|llvm)\b

Expand Down Expand Up @@ -14504,10 +14506,18 @@ S: Supported
F: drivers/crypto/qat/

QCOM AUDIO (ASoC) DRIVERS
M: Patrick Lai <plai@codeaurora.org>
M: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
M: Banajit Goswami <bgoswami@codeaurora.org>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Supported
F: sound/soc/codecs/lpass-va-macro.c
F: sound/soc/codecs/lpass-wsa-macro.*
F: sound/soc/codecs/msm8916-wcd-analog.c
F: sound/soc/codecs/msm8916-wcd-digital.c
F: sound/soc/codecs/wcd9335.*
F: sound/soc/codecs/wcd934x.c
F: sound/soc/codecs/wcd-clsh-v2.*
F: sound/soc/codecs/wsa881x.c
F: sound/soc/qcom/

QCOM IPA DRIVER
Expand Down Expand Up @@ -16959,7 +16969,7 @@ M: Olivier Moysan <olivier.moysan@st.com>
M: Arnaud Pouliquen <arnaud.pouliquen@st.com>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/sound/st,stm32-*.txt
F: Documentation/devicetree/bindings/iio/adc/st,stm32-*.yaml
F: sound/soc/stm/

STM32 TIMER/LPTIMER DRIVERS
Expand Down Expand Up @@ -18412,7 +18422,7 @@ F: Documentation/usb/ohci.rst
F: drivers/usb/host/ohci*

USB OTG FSM (Finite State Machine)
M: Peter Chen <Peter.Chen@nxp.com>
M: Peter Chen <peter.chen@kernel.org>
L: linux-usb@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb.git
Expand Down Expand Up @@ -19416,7 +19426,7 @@ F: drivers/net/ethernet/*/*/*xdp*
K: (?:\b|_)xdp(?:\b|_)

XDP SOCKETS (AF_XDP)
M: Björn Töpel <bjorn.topel@intel.com>
M: Björn Töpel <bjorn@kernel.org>
M: Magnus Karlsson <magnus.karlsson@intel.com>
R: Jonathan Lemon <jonathan.lemon@gmail.com>
L: netdev@vger.kernel.org
Expand Down
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