My console locks up as soon as Linux writes to [88800000,88f00000[
AFAIU, that memory area is reserved for trustzone.
Extend TZ reserved memory range, to prevent Linux from stepping on
trustzone's toes.
Cc: stable@vger.kernel.org # 4.20+
Reviewed-by: Sibi Sankar <sibis@codeaurora.org>
Fixes: c783394956 ("arm64: dts: qcom: msm8998: Add smem related nodes")
Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Use div_u64() to resolve build failures on 32-bit platforms.
Fixes: 3f7ae5f3dc ("net: sched: pie: add more cases to auto-tune alpha and beta")
Signed-off-by: Leslie Monis <lesliemonis@gmail.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
When sending multicast messages via blocking socket,
if sending link is congested (tsk->cong_link_cnt is set to 1),
the sending thread will be put into sleeping state. However,
tipc_sk_filter_rcv() is called under socket spin lock but
tipc_wait_for_cond() is not. So, there is no guarantee that
the setting of tsk->cong_link_cnt to 0 in tipc_sk_proto_rcv() in
CPU-1 will be perceived by CPU-0. If that is the case, the sending
thread in CPU-0 after being waken up, will continue to see
tsk->cong_link_cnt as 1 and put the sending thread into sleeping
state again. The sending thread will sleep forever.
CPU-0 | CPU-1
tipc_wait_for_cond() |
{ |
// condition_ = !tsk->cong_link_cnt |
while ((rc_ = !(condition_))) { |
... |
release_sock(sk_); |
wait_woken(); |
| if (!sock_owned_by_user(sk))
| tipc_sk_filter_rcv()
| {
| ...
| tipc_sk_proto_rcv()
| {
| ...
| tsk->cong_link_cnt--;
| ...
| sk->sk_write_space(sk);
| ...
| }
| ...
| }
sched_annotate_sleep(); |
lock_sock(sk_); |
remove_wait_queue(); |
} |
} |
This commit fixes it by adding memory barrier to tipc_sk_proto_rcv()
and tipc_wait_for_cond().
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This pointer is RCU protected, so proper primitives should be used.
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Incoming packets may have IP header checksum verified by the host.
They may not have IP header checksum computed after coalescing.
This patch re-compute the checksum when necessary, otherwise the
packets may be dropped, because Linux network stack always checks it.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Compiling with CONFIG_PPC_POWERNV=y and KVM disabled currently gives
an error like this:
CC arch/powerpc/kernel/dbell.o
In file included from arch/powerpc/kernel/dbell.c:20:0:
arch/powerpc/include/asm/kvm_ppc.h: In function ‘xics_on_xive’:
arch/powerpc/include/asm/kvm_ppc.h:625:9: error: implicit declaration of function ‘xive_enabled’ [-Werror=implicit-function-declaration]
return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE);
^
cc1: all warnings being treated as errors
scripts/Makefile.build:276: recipe for target 'arch/powerpc/kernel/dbell.o' failed
make[3]: *** [arch/powerpc/kernel/dbell.o] Error 1
Fix this by making the xics_on_xive() definition conditional on the
same symbol (CONFIG_KVM_BOOK3S_64_HANDLER) that determines whether we
include <asm/xive.h> or not, since that's the header that defines
xive_enabled().
Fixes: 03f953329b ("KVM: PPC: Book3S: Allow XICS emulation to work in nested hosts using XIVE")
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
percpu-km is used on UP systems which only has one group,
so the group offset will be always 0, there is no need
to subtract pcpu_group_offsets[0] when assigning chunk->base_addr
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
David Ahern says:
====================
net: Fail route add with unsupported nexthop attribute
RTA_VIA was added for MPLS as a way of specifying a gateway from a
different address family. IPv4 and IPv6 do not currently support RTA_VIA
so using it leads to routes that are not what the user intended. Catch
and fail - returning a proper error message.
MPLS on the other hand does not support RTA_GATEWAY since it does not
make sense to have a nexthop from the MPLS address family. Similarly,
catch and fail - returning a proper error message.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
MPLS does not support nexthops with an MPLS address family.
Specifically, it does not handle RTA_GATEWAY attribute. Make it
clear by returning an error.
Fixes: 03c0566542 ("mpls: Netlink commands to add, remove, and dump routes")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
IPv6 currently does not support nexthops outside of the AF_INET6 family.
Specifically, it does not handle RTA_VIA attribute. If it is passed
in a route add request, the actual route added only uses the device
which is clearly not what the user intended:
$ ip -6 ro add 2001:db8:2::/64 via inet 172.16.1.1 dev eth0
$ ip ro ls
...
2001:db8:2::/64 dev eth0 metric 1024 pref medium
Catch this and fail the route add:
$ ip -6 ro add 2001:db8:2::/64 via inet 172.16.1.1 dev eth0
Error: IPv6 does not support RTA_VIA attribute.
Fixes: 03c0566542 ("mpls: Netlink commands to add, remove, and dump routes")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
IPv4 currently does not support nexthops outside of the AF_INET family.
Specifically, it does not handle RTA_VIA attribute. If it is passed
in a route add request, the actual route added only uses the device
which is clearly not what the user intended:
$ ip ro add 172.16.1.0/24 via inet6 2001:db8:1::1 dev eth0
$ ip ro ls
...
172.16.1.0/24 dev eth0
Catch this and fail the route add:
$ ip ro add 172.16.1.0/24 via inet6 2001:db8:1::1 dev eth0
Error: IPv4 does not support RTA_VIA attribute.
Fixes: 03c0566542 ("mpls: Netlink commands to add, remove, and dump routes")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet says:
====================
tcp: cleanups for linux-5.1
This small patch series cleanups few things, and add a small
timewait optimization for hosts not using md5.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
tso_fragment() is only called for packets still in write queue.
Remove the tcp_queue parameter to make this more obvious,
even if the comment clearly states this.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This might speedup tcp_twsk_destructor() a bit,
avoiding a cache line miss.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We prefer static_branch_unlikely() over static_key_false() these days.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This helper is only used from tcp_add_write_queue_tail(), and does
not make the code more readable.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This helper is used only once, and its name is no longer relevant.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Configure the amount of 64 bytes of frame, annotation and context data
that will be cache stashed for a specific frame queue. Since the frame
context is not used, configure that only 64 bytes of frame data and 64
bytes of annotation will be stashed.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Depending on the SoC version and the CPU id, configure the cache
stashing destination for a specific dpio.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Enable cache stashing on the frame data dequeued using this software
portal. Also, enable dropping a stash request transaction when the
target request queue is almost full.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Avoid cache line miss dereferencing struct page if we can.
page_copy_sane() mostly deals with order-0 pages.
Extra cache line miss is visible on TCP recvmsg() calls dealing
with GRO packets (typically 45 page frags are attached to one skb).
Bringing the 45 struct pages into cpu cache while copying the data
is not free, since the freeing of the skb (and associated
page frags put_page()) can happen after cache lines have been evicted.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Correct cpu clock name from ca57 to ca72 since MT8173 does use cortex-a72.
Signed-off-by: Seiya Wang <seiya.wang@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Make the entire combination of plls to be one single clock. The parents used
for bypasses are specified each as an index in the parents list.
The determine_rate does a lookup throughout all the possible combinations
for all the divs and returns the best possible 'setup' which in turn is used
by set_rate later to set up all the divs and bypasses.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Tested-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
In bpf/syscall.c, bpf_map_get_fd_by_id() use bpf_map_inc_not_zero()
to increase the refcount, both map->refcnt and map->usercnt. Then, if
bpf_map_new_fd() fails, should handle map->usercnt too.
Fixes: bd5f5f4ecb ("bpf: Add BPF_MAP_GET_FD_BY_ID")
Signed-off-by: Peng Sun <sironhide0null@gmail.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
On NXP's i.MX SoCs with system controller inside, CPU frequency
scaling can ONLY be done by system controller firmware, and it
can ONLY be requested from secure mode, so Linux kernel has to
call ARM SMC to trap to ARM-Trusted-Firmware to request system
controller firmware to do CPU frequency scaling.
This patch adds i.MX system controller CPU frequency scaling support,
it reuses cpufreq-dt driver and implement the CPU frequency scaling
inside SCU clock driver.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Currently, DRAM-related clocks are not marked with CLK_IS_CRITICAL
for MT6797. This causes memory corruption when the system is
booted without clk_ignore_unused.
This patch marks MUX ddrphycfg_sel as well as gates infra_dramc_f26m
and infra_dramc_b_f26m as CLK_IS_CRITICAL.
Signed-off-by: Jasper Mattsson <jasu@njomotys.info>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This is required to mark gates as CLK_IS_CRITICAL.
Signed-off-by: Jasper Mattsson <jasu@njomotys.info>
Acked-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This is required to mark outputs of certain MUXes as CLK_IS_CRITICAL.
Signed-off-by: Jasper Mattsson <jasu@njomotys.info>
Acked-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The export of fsl_guts_get_svr() is a left-over, it's currently used
only internally and users needing SoC information should use the generic
soc_device infrastructure.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Acked-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
The PCIe PIPE clock in the GCC is fed by the PIPE clock coming from the
PHY, describe this relationship.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/clk/ingenic/cgu.c: In function 'ingenic_pll_recalc_rate':
drivers/clk/ingenic/cgu.c:86:15: warning:
variable 'enable' set but not used [-Wunused-but-set-variable]
It's not used after commit ab27eb4bc3 ("clk: ingenic: Add code to
enable/disable PLLs")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Since we have a little function to see whether a channel
program address falls within a range of CCWs, let's use
it in the other places of code that make these checks.
(Why isn't ccw_head fully removed? Well, because this
way some longs lines don't have to be reflowed.)
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Message-Id: <20190222183941.29596-3-farman@linux.ibm.com>
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
The routine ccwchain_calc_length() is tasked with looking at a
channel program, seeing how many CCWs are chained together by
the presence of the Chain-Command flag, and returning a count
to the caller.
Previously, it also considered a Transfer-in-Channel CCW as being
an appropriate mechanism for chaining. The problem at the time
was that the TIC CCW will almost certainly not go to the next CCW
in memory (because the CC flag would be sufficient), and so
advancing to the next 8 bytes will cause us to read potentially
invalid memory. So that comparison was removed, and the target
of the TIC is processed as a new chain.
This is fine when a TIC goes to a new chain (consider a NOP+TIC to
a channel program that is being redriven), but there is another
scenario where this falls apart. A TIC can be used to "rewind"
a channel program, for example to find a particular record on a
disk with various orientation CCWs. In this case, we DO want to
consider the memory after the TIC since the TIC will be skipped
once the requested criteria is met. This is due to the Status
Modifier presented by the device, though software doesn't need to
operate on it beyond understanding the behavior change of how the
channel program is executed.
So to handle this, we will re-introduce the check for a TIC CCW
but limit it by examining the target of the TIC. If the TIC
doesn't go back into the current chain, then current behavior
applies; we should stop counting CCWs and let the target of the
TIC be handled as a new chain. But, if the TIC DOES go back into
the current chain, then we need to keep looking at the memory after
the TIC for when the channel breaks out of the TIC loop. We can't
use tic_target_chain_exists() because the chain in question hasn't
been built yet, so we will redefine that comparison with some small
functions to make it more readable and to permit refactoring later.
Fixes: 405d566f98 ("vfio-ccw: Don't assume there are more ccws after a TIC")
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Message-Id: <20190222183941.29596-2-farman@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Comment in tdc_config.py recommends putting customizations in
tdc_config_local.py file that wasn't included in gitignore. Add the local
config file to gitignore.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Function walker_check_empty() incorrectly verifies that tp pointer is not
NULL, instead of actual filter pointer. Fix conditional to check the right
pointer. Adjust filter pointer naming accordingly to other cls API
functions.
Fixes: 6676d5e416 ("net: sched: set dedicated tcf_walker flag when tp is empty")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reported-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/net/ethernet/mellanox/mlxsw/spectrum.c: In function 'mlxsw_sp_port_get_link_ksettings':
drivers/net/ethernet/mellanox/mlxsw/spectrum.c:3062:5: warning:
variable 'autoneg_status' set but not used [-Wunused-but-set-variable]
It's not used since commit 475b33cb66 ("mlxsw: spectrum: Remove unsupported
eth_proto_lp_advertise field in PTYS")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The assembly macro get_thread_info() actually returns a task_struct and is
analogous to the current/get_current macro/function.
While it could be argued that thread_info sits at the start of
task_struct and the intention could have been to return a thread_info,
instances of loads from/stores to the address obtained from
get_thread_info() use offsets that are generated with
offsetof(struct task_struct, [...]).
Rename get_thread_info() to state it returns a task_struct.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Roopa Prabhu says:
====================
vxlan: create and changelink extack support
This series adds extack support to changelink paths.
In the process re-factors flag sets to a separate helper.
Also adds some changelink testcases to rtnetlink.sh
(This series was initially part of another series that
tried to support changelink for more attributes.
But after some feedback from sabrina, i have dropped the
'support changelink for more attributes' part because some
of them cannot be supported today or may require additional
use-case handling code. These can be done separately
as and when we see the need for it.)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch extends rtnetlink.sh to cover some vxlan flag
netlink attribute sets.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds extack coverage in vxlan link
create and changelink paths. Introduces a new helper
vxlan_nl2flags to consolidate flag attribute validation.
thanks to Johannes Berg for some tips to construct the
generic vxlan flag extack strings.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski says:
====================
devlink: make ethtool compat reliable
This is a follow up to the series which added device flash
updates via devlink. I went with the approach of adding a
new NDO in the end. It seems to end up looking cleaner.
First patch removes the option to build devlink as a module.
Users can still decide to not build it, but the module option
ends up not being worth the maintenance cost.
Next two patches add a NDO which can be used to ask the driver
to return a devlink instance associated with a given netdev,
instead of iterating over devlink ports. Drivers which implement
this NDO must take into account the potential impact on the
visibility of the devlink instance.
With the new NDO in place we can remove NFP ethtool flash update
code.
Fifth patch makes sure we hold a reference to dev while
callbacks are active.
Last but not least the NULL-check of devlink->ops is moved
to instance allocation time.
Last but not least missing checks for devlink->ops are added.
There is currently no driver registering devlink without ops,
so can just fix this in -next.
v2 (Michal): add netdev_to_devlink() in patch 3.
v3 (Florian):
- add missing checks for devlink->ops;
- move locking/holding into devlink_compat_ functions.
v4 (Jiri):
- hold devlink_mutex around callbacks (patch 2);
- require non-NULL ops (patch 6).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 76726ccb7f ("devlink: add flash update command") and
commit 2d8dc5bbf4 ("devlink: Add support for reload")
access devlink ops without NULL-checking. There is, however, no
driver which would pass in NULL ops, so let's just make that
a requirement. Remove the now unnecessary NULL-checking.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When ethtool is calling into devlink compat code make sure we have
a reference on the netdevice on which the operation was invoked.
v3: move the hold/lock logic into devlink_compat_* functions (Florian)
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that devlink fallback will be called reliably, we can remove
the ethtool flashing code.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Support getting devlink instance from a new NDO.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of iterating over all devlink ports add a NDO which
will return the devlink instance from the driver.
v2: add the netdev_to_devlink() helper (Michal)
v3: check that devlink has ops (Florian)
v4: hold devlink_mutex (Jiri)
Suggested-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Being able to build devlink as a module causes growing pains.
First all drivers had to add a meta dependency to make sure
they are not built in when devlink is built as a module. Now
we are struggling to invoke ethtool compat code reliably.
Make devlink code built-in, users can still not build it at
all but the dynamically loadable module option is removed.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The *i2c and *i2c_8606 are no longer used since this driver was converted
to use regmap helpers. The *chip and *regulator are not really required.
So remove these unused fields.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
