Four bigger things:
1. The implementation of the STHYI opcode in the kernel. This is used
in libraries like qclib [1] to provide enough information for a
capacity and usage based software licence pricing. The STHYI content
is defined by the related z/VM documentation [2]. Its data can be
composed by accessing several other interfaces provided by LPAR or
the machine. This information is partially sensitive or root-only
so the kernel does the necessary filtering.
2. Preparation for nested virtualization (VSIE). KVM should query the
proper sclp interfaces for the availability of some features before
using it. In the past we have been sloppy and simply assumed that
several features are available. With this we should be able to handle
most cases of a missing feature.
3. CPU model interfaces extended by some additional features that are
not covered by a facility bit in STFLE. For example all the crypto
instructions of the coprocessor provide a query function. As reality
tends to be more complex (e.g. export regulations might block some
algorithms) we have to provide additional interfaces to query or
set these non-stfle features.
4. Several fixes and changes detected and fixed when doing 1-3.
All features change base s390 code. All relevant patches have an ACK
from the s390 or component maintainers.
The next pull request for 4.8 (part2) will contain the implementation
of VSIE.
[1] http://www.ibm.com/developerworks/linux/linux390/qclib.html
[2] https://www.ibm.com/support/knowledgecenter/SSB27U_6.3.0/com.ibm.zvm.v630.hcpb4/hcpb4sth.htm
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Merge tag 'kvm-s390-next-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: Features and fixes for 4.8 part1
Four bigger things:
1. The implementation of the STHYI opcode in the kernel. This is used
in libraries like qclib [1] to provide enough information for a
capacity and usage based software licence pricing. The STHYI content
is defined by the related z/VM documentation [2]. Its data can be
composed by accessing several other interfaces provided by LPAR or
the machine. This information is partially sensitive or root-only
so the kernel does the necessary filtering.
2. Preparation for nested virtualization (VSIE). KVM should query the
proper sclp interfaces for the availability of some features before
using it. In the past we have been sloppy and simply assumed that
several features are available. With this we should be able to handle
most cases of a missing feature.
3. CPU model interfaces extended by some additional features that are
not covered by a facility bit in STFLE. For example all the crypto
instructions of the coprocessor provide a query function. As reality
tends to be more complex (e.g. export regulations might block some
algorithms) we have to provide additional interfaces to query or
set these non-stfle features.
4. Several fixes and changes detected and fixed when doing 1-3.
All features change base s390 code. All relevant patches have an ACK
from the s390 or component maintainers.
The next pull request for 4.8 (part2) will contain the implementation
of VSIE.
[1] http://www.ibm.com/developerworks/linux/linux390/qclib.html
[2] https://www.ibm.com/support/knowledgecenter/SSB27U_6.3.0/com.ibm.zvm.v630.hcpb4/hcpb4sth.htm
Intel Edison board has 4 GPIO expanders PCA9555a connected to I2C bus. Add an
ID to support them.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This function is just ->init(), rename it to make it obvious.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
These should be gone when we removed CONFIG_NET_CLS_POLICE.
We can not totally remove them since they are exposed
to userspace.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'linux-4.7' of git://github.com/skeggsb/linux:
drm/nouveau/iccsense: fix memory leak
drm/nouveau/Revert "drm/nouveau/device/pci: set as non-CPU-coherent on ARM64"
Sowmini Varadhan says:
====================
RDS: multiple connection paths for scaling
Today RDS-over-TCP is implemented by demux-ing multiple PF_RDS sockets
between any 2 endpoints (where endpoint == [IP address, port]) over a
single TCP socket between the 2 IP addresses involved. This has the
limitation that it ends up funneling multiple RDS flows over a single
TCP flow, thus the rds/tcp connection is
(a) upper-bounded to the single-flow bandwidth,
(b) suffers from head-of-line blocking for the RDS sockets.
Better throughput (for a fixed small packet size, MTU) can be achieved
by having multiple TCP/IP flows per rds/tcp connection, i.e., multipathed
RDS (mprds). Each such TCP/IP flow constitutes a path for the rds/tcp
connection. RDS sockets will be attached to a path based on some hash
(e.g., of local address and RDS port number) and packets for that RDS
socket will be sent over the attached path using TCP to segment/reassemble
RDS datagrams on that path.
The table below, generated using a prototype that implements mprds,
shows that this is significant for scaling to 40G. Packet sizes
used were: 8K byte req, 256 byte resp. MTU: 1500. The parameters for
RDS-concurrency used below are described in the rds-stress(1) man page-
the number listed is proportional to the number of threads at which max
throughput was attained.
-------------------------------------------------------------------
RDS-concurrency Num of tx+rx K/s (iops) throughput
(-t N -d N) TCP paths
-------------------------------------------------------------------
16 1 600K - 700K 4 Gbps
28 8 5000K - 6000K 32 Gbps
-------------------------------------------------------------------
FAQ: what is the relation between mprds and mptcp?
mprds is orthogonal to mptcp. Whereas mptcp creates
sub-flows for a single TCP connection, mprds parallelizes tx/rx
at the RDS layer. MPRDS with N paths will allow N datagrams to
be sent in parallel; each path will continue to send one
datagram at a time, with sender and receiver keeping track of
the retransmit and dgram-assembly state based on the RDS header.
If desired, mptcp can additionally be used to speed up each TCP
path. That acceleration is orthogonal to the parallelization benefits
of mprds.
This patch series lays down the foundational data-structures to support
mprds in the kernel. It implements the changes to split up the
rds_connection structure into a common (to all paths) part,
and a per-path rds_conn_path. All I/O workqs are driven from
the rds_conn_path.
Note that this patchset does not (yet) actually enable multipathing
for any of the transports; all transports will continue to use a
single path with the refactored data-structures. A subsequent patchset
will add the changes to the rds-tcp module to actually use mprds
in rds-tcp.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Refactor rds_conn_destroy() so that the per-path dismantling
is done in rds_conn_path_destroy, and then iterate as needed
over rds_conn_path_destroy().
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit changes rds_conn_shutdown to take a rds_conn_path *
argument, allowing it to shutdown paths other than c_path[0] for
MP-capable transports.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a for() loop in __rds_conn_create to initialize all the
conn_paths, in preparate for MP capable transports.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rds_conn_path_error() is the MP-aware analog of rds_conn_error,
to be used by multipath-capable callers.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit updates the callbacks related to the rds-info command
so that they walk through all the rds_conn_path structures and
report the requested info.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rds_conn_path_connect_if_down() works on the rds_conn_path
that it is passed. Callers who are not t_m_capable may continue
calling rds_conn_connect_if_down, which will invoke
rds_conn_path_connect_if_down() with the default c_path[0].
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit allows rds_send_pong() callers to send back
the rds pong message on some path other than c_path[0] by
passing in a struct rds_conn_path * argument. It also
removes the last dependency on the #defines in rds_single.h
from send.c
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Explicitly set up rds_conn_path, either from i_conn_path (for
MP capable transpots) or as c_path[0], and use this in
rds_send_drop_to()
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pass a struct rds_conn_path to rds_send_xmit so that MP capable
transports can transmit packets on something other than c_path[0].
The eventual goal for MP capable transports is to hash the rds
socket to a path based on the bound local address/port, and use
this path as the argument to rds_send_xmit()
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pass the rds_conn_path to rds_send_queue_rm, and use it to initialize
the i_conn_path field in struct rds_incoming. This commit also makes
rds_send_queue_rm() MP capable, because it now takes locks
specific to the rds_conn_path passed in, instead of defaulting to
the c_path[0] based defines from rds_single_path.h
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The only caller of rds_send_get_message() was
rds_iw_send_cq_comp_handler() which was removed as part of
commit dcdede0406 ("RDS: Drop stale iWARP RDMA transport"),
so remove rds_send_get_message() for the same reason.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rds_send_path_drop_acked() is the path-specific version of
rds_send_drop_acked() to be invoked by MP capable callers.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rds_send_path_reset() is the path specific version of rds_send_reset()
intended for MP capable callers.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
t_mp_capable transports can use rds_inc_path_init to initialize
all fields in struct rds_incoming, including the i_conn_path.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Transports that are t_mp_capable should set the rds_conn_path
on which the datagram was recived in the ->i_conn_path field
of struct rds_incoming.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The t_mp_capable bit will be used in the core rds module
to support multipathing logic when the transport supports it.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation for multipath RDS, split the rds_connection
structure into a base structure, and a per-path struct rds_conn_path.
The base structure tracks information and locks common to all
paths. The workqs for send/recv/shutdown etc are tracked per
rds_conn_path. Thus the workq callbacks now work with rds_conn_path.
This commit allows for one rds_conn_path per rds_connection, and will
be extended into multiple conn_paths in subsequent commits.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
On Acer One 10, the ACPI battery driver can not be probed because
it depends on the GPIO controller as well as the I2C controller to work,
Device (BATC)
{
Name (_HID, EisaId ("PNP0C0A") /* Control Method Battery */)
...
Name (_DEP, Package (0x03) // _DEP: Dependencies
{
I2C1,
GPO2,
GPO0
})
...
}
The I2C dependency also exists on other platforms and has been fixed by commit
40e7fcb192 ("ACPI: Add _DEP support to fix battery issue on Asus T100TA"),
this patch resolves the GPIO dependency for Acer One 10.
Link:https://bugzilla.kernel.org/show_bug.cgi?id=115191
Tested-by: Stace A. Zacharov <stace75@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Make sure that dctcp_get_info() returns only the size of the
info->dctcp struct that it zeroes out and fills in. Previously it had
been returning the size of the enclosing tcp_cc_info union,
sizeof(*info). There is no problem yet, but that union that may one
day be larger than struct tcp_dctcp_info, in which case the
TCP_CC_INFO code might accidentally copy uninitialized bytes from the
stack.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is to cater the need for non-ACPI system whereby
a platform device has to be created in order to bind
with the Apollo Lake Pinctrl GPIO platform driver.
Signed-off-by: Tan Jui Nee <jui.nee.tan@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The recently added max77620 driver fails to build when CONFIG_PINMUX
is not set:
pinctrl/pinctrl-max77620.c:272:21: error: variable 'max77620_pinmux_ops' has initializer but incomplete type
static const struct pinmux_ops max77620_pinmux_ops = {
^~~~~~~~~~
pinctrl/pinctrl-max77620.c:273:2: error: unknown field 'get_functions_count' specified in initializer
This adds the Kconfig 'select' statement that was clearly meant
to be there and is used in all other pinmux drivers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When building with 'make W=1', we get harmless warnings about
five drivers in drivers/pinctrl, which all contain a copy of
the same line:
drivers/pinctrl/freescale/pinctrl-imx1-core.c:160:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]
This replaces the somewhat nonstandard 'static const inline'
with 'static inline const', which has the same meaning but
does not cause this warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The strucuture 'max77620_cfg_param' is defined but never used by the
max77620 driver. Remove this structure definition.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Pin config get/set handlers for pin groups were previously not
implemented by this driver. The pin_config_group_set is
particularly useful for applying a common config setting to all
pins in a specified group with a single call, without the caller
needing to reference each individual pin by name.
Signed-off-by: Dan O'Donovan <dan@emutex.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
On some CHV platforms, we need an option to configure the
open-drain setting for these pins. This adds support for the
PIN_CONFIG_DRIVE_PUSH_PULL and PIN_CONFIG_DRIVE_OPEN_DRAIN to
disable/enable open-drain mode for a specific pin.
Signed-off-by: Dan O'Donovan <dan@emutex.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Due to a silicon issue on the Atom X5-Z8000 "Cherry Trail" processor
series, a common lock must be used to prevent concurrent accesses
across the 4 GPIO controllers managed by this driver.
See Intel Atom Z8000 Processor Series Specification Update
(Rev. 005), errata #CHT34, for further information.
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Dan O'Donovan <dan@emutex.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The PM8058 is found in connection to the APQ8060 on the APQ8060
Dragonboard. Works the same as all others, just add the compatible
string for this variant.
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Andy Gross <andy.gross@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Merge tag 'rxrpc-rewrite-20160613' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Rename rxrpc source files
Here's the next part of the AF_RXRPC rewrite. In this set I rename some of
the files in the net/rxrpc/ directory and adjust the Makefile and
ar-internal.h to reflect the changes.
The aim is twofold:
(1) Remove the "ar-" prefix on those files that have it as it's not really
useful, especially now that I'm building rxkad in.
(2) To aid splitting the local, peer, connection and call handling code
into separate files for object and event handling in future patches by
making it easier to come up with new filenames.
There are two commits:
(1) The first commit does a bunch of renames of .c files and alters the
Makefile. ar-internal.h isn't renamed at this time to avoid having to
change the contents of the files being renamed.
(2) The second commit changes the section label comments in ar-internal.h
to reflect the changed filenames and reorders the file so that the
sections are back in filename order.
The patches can be found here also:
http://git.kernel.org/cgit/linux/kernel/git/dhowells/linux-fs.git/log/?h=rxrpc-rewrite
Tagged thusly:
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git
rxrpc-rewrite-20160613
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
After the patchset about adding support of ACPI (commit id is 6343488)
being applied, HNS does not depend on OF. It depends on OF or ACPI, so
the Kconfig file needs to be updated.
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
to handle pptable format change on Polaris boards
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Hayes Wang says:
====================
r8152: code adjustment for PHY
These patches are for adjusting the code about PHY and setting speed.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The user may change the speed. Use it to replace the default one.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move calling set_speed() from open() to rtl_hw_phy_work_func_t().
Then, we would set the default speed only for first initialization
or after resuming.
Besides, the set_speed() could handle the flag of PHY_RESET which
would be set in rtl_ops.hw_phy_cfg().
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move the settings of PHY to a work queue and schedule it after
rtl_ops.init().
There are some reasons for this. First, the settings are only
needed for the first time initialization or after the power
down occurs.
Second, the settings are independent with the others.
Last, the settings may take more time than the others. Leave
they in probe() or open() may delay the following flows.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When skip_sw is set and hardware fails to apply filter, return error to
user. This will make error propagation logic similar to the one
currently used in u32 classifier.
Also, changed code to use tc_skip_sw() utility function.
Signed-off-by: Amir Vadai <amirva@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace the in order struct initialisation style with explicit field
style.
The Coccinelle semantic patch used to make this change is as follows:
@decl@
identifier i1,fld;
type T;
field list[n] fs;
@@
struct i1 {
fs
T fld;
...};
@@
identifier decl.i1,i2,decl.fld;
expression e;
position bad.p, bad.fix;
@@
struct i1 i2@p = { ...,
+ .fld = e
- e@fix
,...};
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Nicolas Dichtel says:
====================
ovs: fix rtnl notifications on interface deletion
There was no rtnl notifications for interfaces (gre, vxlan, geneve) created
by ovs. This problem is fixed by adjusting the creation path.
v1 -> v2:
- add patch #1 and #4
- rework error handling in patch #2
====================
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The function geneve_dev_create_fb() (only used by ovs) never calls
rtnl_configure_link(). The consequence is that dev->rtnl_link_state is
never set to RTNL_LINK_INITIALIZED.
During the deletion phase, the function rollback_registered_many() sends
a RTM_DELLINK only if dev->rtnl_link_state is set to RTNL_LINK_INITIALIZED.
Fixes: e305ac6cf5 ("geneve: Add support to collect tunnel metadata.")
CC: Pravin B Shelar <pshelar@nicira.com>
CC: Jesse Gross <jesse@nicira.com>
CC: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The function gretap_fb_dev_create() (only used by ovs) never calls
rtnl_configure_link(). The consequence is that dev->rtnl_link_state is
never set to RTNL_LINK_INITIALIZED.
During the deletion phase, the function rollback_registered_many() sends
a RTM_DELLINK only if dev->rtnl_link_state is set to RTNL_LINK_INITIALIZED.
Fixes: b2acd1dc39 ("openvswitch: Use regular GRE net_device instead of vport")
CC: Thomas Graf <tgraf@suug.ch>
CC: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
