Add a timeout to performing an ssh command. This will let testing if a
machine is alive or not, or if something else may be amiss. A timeout can be
passed to ssh, where ssh will fail if it does not complete within the given
timeout.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
- enable some simd extensions for guests
- enable nx for guests
- debug log for cpu model
- PER fixes
- remove bitwise annotation from ar_t
- detect guests in operation exception program check loops
- fix potential null-pointer dereference for ucontrol guests
- also contains merge for fix that went into 4.10 to avoid conflicts
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Merge tag 'kvm-s390-next-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: Fixes and features for 4.11 (via kvm/next)
- enable some simd extensions for guests
- enable nx for guests
- debug log for cpu model
- PER fixes
- remove bitwise annotation from ar_t
- detect guests in operation exception program check loops
- fix potential null-pointer dereference for ucontrol guests
- also contains merge for fix that went into 4.10 to avoid conflicts
Numerous MIPS KVM fixes, improvements, and features for 4.11, many of
which continue to pave the way for VZ support, the most interesting of
which are:
- Add GVA->HPA page tables for T&E, to cache GVA mappings.
- Generate fast-path TLB refill exception handler which loads host TLB
entries from GVA page table, avoiding repeated guest memory
translation and guest TLB lookups.
- Use uaccess macros when T&E needs to access guest memory, which with
GVA page tables and the Linux TLB refill handler improves robustness
against TLB faults and fixes EVA hosts.
- Use BadInstr/BadInstrP registers when available to obtain instruction
encodings after a synchronous trap.
- Add GPA->HPA page tables to replace the inflexible linear array,
allowing for multiple sparsely arranged memory regions.
- Properly implement dirty page logging.
- Add KVM_CAP_SYNC_MMU support so that changes in GPA mappings become
effective in guests even if they are already running, allowing for
copy-on-write, KSM, idle page tracking, swapping, and guest memory
ballooning.
- Add KVM_CAP_READONLY_MEM support, so writes to specified memory
regions are treated as MMIO.
- Implement proper CP0_EBase support in T&E.
- Expose a few more missing CP0 registers to userland.
- Add KVM_CAP_NR_VCPUS and KVM_CAP_MAX_VCPUS support, and allow up to 8
VCPUs to be created in a VM.
- Various cleanups and dropping of dead and duplicated code.
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Merge tag 'kvm_mips_4.11_1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/kvm-mips into HEAD
KVM: MIPS: GVA/GPA page tables, dirty logging, SYNC_MMU etc
Numerous MIPS KVM fixes, improvements, and features for 4.11, many of
which continue to pave the way for VZ support, the most interesting of
which are:
- Add GVA->HPA page tables for T&E, to cache GVA mappings.
- Generate fast-path TLB refill exception handler which loads host TLB
entries from GVA page table, avoiding repeated guest memory
translation and guest TLB lookups.
- Use uaccess macros when T&E needs to access guest memory, which with
GVA page tables and the Linux TLB refill handler improves robustness
against TLB faults and fixes EVA hosts.
- Use BadInstr/BadInstrP registers when available to obtain instruction
encodings after a synchronous trap.
- Add GPA->HPA page tables to replace the inflexible linear array,
allowing for multiple sparsely arranged memory regions.
- Properly implement dirty page logging.
- Add KVM_CAP_SYNC_MMU support so that changes in GPA mappings become
effective in guests even if they are already running, allowing for
copy-on-write, KSM, idle page tracking, swapping, and guest memory
ballooning.
- Add KVM_CAP_READONLY_MEM support, so writes to specified memory
regions are treated as MMIO.
- Implement proper CP0_EBase support in T&E.
- Expose a few more missing CP0 registers to userland.
- Add KVM_CAP_NR_VCPUS and KVM_CAP_MAX_VCPUS support, and allow up to 8
VCPUs to be created in a VM.
- Various cleanups and dropping of dead and duplicated code.
The big feature this time is support for POWER9 using the radix-tree
MMU for host and guest. This required some changes to arch/powerpc
code, so I talked with Michael Ellerman and he created a topic branch
with this patchset, which I merged into kvm-ppc-next and which Michael
will pull into his tree. Michael also put in some patches from Nick
Piggin which fix bugs in the interrupt vector code in relocatable
kernels when coming from a KVM guest.
Other notable changes include:
* Add the ability to change the size of the hashed page table,
from David Gibson.
* XICS (interrupt controller) emulation fixes and improvements,
from Li Zhong.
* Bug fixes from myself and Thomas Huth.
These patches define some new KVM capabilities and ioctls, but there
should be no conflicts with anything else currently upstream, as far
as I am aware.
Add a hypercall to retrieve the host realtime clock and the TSC value
used to calculate that clock read.
Used to implement clock synchronization between host and guest.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
vmx_complete_nested_posted_interrupt() can't fail, let's turn it into
a void function.
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
kmap() can't fail, therefore it will always return a valid pointer. Let's
just get rid of the unnecessary checks.
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The child_exit errno needs to be shifted by 8 bits to compare against the
return values for the bisect variables.
Fixes: c5dacb88f0 ("ktest: Allow overriding bisect test results")
Cc: stable@vger.kernel.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
The POST_TEST config is to be executed after a test has fully compeleted,
whether the test passed or failed. It currently is executed at the moment
that the test has been decided if it failed or not. As the test does other
clean ups, it isn't truly finished. Move the POST_TEST execution to after
all the test cleanups have been done.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
When PSAMPLE is a loadable module, spectrum must not be built-in:
drivers/net/built-in.o: In function `mlxsw_sp_rx_listener_sample_func':
spectrum.c:(.text+0xe357e): undefined reference to `psample_sample_packet'
This adds a Kconfig dependency to enforce usable configurations.
Fixes: 98d0f7b9ac ("mlxsw: spectrum: Add packet sample offloading support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Yotam Gigi <yotamg@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes the following sparse warnings:
net/ipv6/seg6_iptunnel.c:58:5: warning:
symbol 'nla_put_srh' was not declared. Should it be static?
net/ipv6/seg6_iptunnel.c:238:5: warning:
symbol 'seg6_input' was not declared. Should it be static?
net/ipv6/seg6_iptunnel.c:254:5: warning:
symbol 'seg6_output' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove .owner field if calls are used which set it automatically.
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
module_spi_driver() makes the code simpler by eliminating
boilerplate code.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1. Add defines in header for future patches changing the pad
retention control.
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Merge tag 'samsung-drivers-soc-pmu-4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/drivers
Pull "soc: samsung: pmu for v4.11, third round" from Krzysztof Kozłowski:
3rd round of improvements for Exynos PMU driver for v4.11:
1. Add defines in header for future patches changing the pad
retention control.
* tag 'samsung-drivers-soc-pmu-4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
soc: samsung: pmu: Add register defines for pad retention control
power domain. Till now, the name of node from DT was used which mostly is just
"power-domain". We need more than that.
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Merge tag 'samsung-drivers-soc-pm-domains-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/drivers
Pull "soc: samsung: pm_domains for v4.11" from Krzysztof Kozłowski:
Improve the PM domains driver for Exynos by displaying a user-friendly name of
power domain. Till now, the name of node from DT was used which mostly is just
"power-domain". We need more than that.
* tag 'samsung-drivers-soc-pm-domains-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
soc: samsung: pm_domains: Read domain name from the new label property
soc: samsung: pm_domains: Remove message about failed memory allocation
soc: samsung: pm_domains: Remove unused name field
soc: samsung: pm_domains: Use full names in subdomains registration log
Dmitry reported that UDP sockets being destroyed would trigger the
WARN_ON(atomic_read(&sk->sk_rmem_alloc)); in inet_sock_destruct()
It turns out we do not properly destroy skb(s) that have wrong UDP
checksum.
Thanks again to syzkaller team.
Fixes : 7c13f97ffd ("udp: do fwd memory scheduling on dequeue")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Fix missing NULL check in reset_control_put for optional reset control
conversion
- Make zx2967 driver explicitly non-modular
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Merge tag 'reset-for-4.11-2' of git://git.pengutronix.de/pza/linux into next/drivers
Pull "Reset controller changes for v4.11, part 2" from Philipp Zabel:
- Fix missing NULL check in reset_control_put for optional reset control
conversion
- Make zx2967 driver explicitly non-modular
* tag 'reset-for-4.11-2' of git://git.pengutronix.de/pza/linux:
reset: make zx2967 explicitly non-modular
reset: core: fix reset_control_put
A single patch to enable the thermal DT support in sunxi_defconfig
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Merge tag 'sunxi-defconfig-for-4.11' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/defconfig
Pull "Allwinner defconfig changes for 4.11" from Maxime Ripard:
A single patch to enable the thermal DT support in sunxi_defconfig
* tag 'sunxi-defconfig-for-4.11' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: sunxi: Add CONFIG_THERMAL_OF
Florian Fainelli says:
====================
net: dsa: Support for pdata in dsa2
This is not exactly new, and was sent before, although back then, I did not
have an user of the pre-declared MDIO board information, but now we do. Note
that I have additional changes queued up to have b53 register platform data for
MIPS bcm47xx and bcm63xx.
Yes I know that we should have the Orion platforms eventually be converted to
Device Tree, but until that happens, I don't want any remaining users of the
old "dsa" platform device (hence the previous DTS submissions for ARM/mvebu)
and, there will be platforms out there that most likely won't never see DT
coming their way (BCM47xx is almost 100% sure, BCM63xx maybe not in a distant
future).
We would probably want the whole series to be merged via David Miller's tree
to simplify things.
Thanks!
Changes in v5:
- dropped changes to drivers/base/ because after more than a month, we cannot
get any answer from Greg KH
Changes in v4:
- Changed device_find_class() to device_find_in_class_name()
- Added kerneldoc above device_find_in_class_name() to explain what it does
and the calling convention regarding device reference counts
- Changed dev_to_net_device to device_to_net_device() added comments
about what it does and the caller conventions regarding reference counts
Changes in v3:
- Tested EPROBE_DEFER from a mockup MDIO/DSA switch driver and everything
is fine, once the driver finally probes we have access to platform data
as expected
- added comment above dsa_port_is_valid() that port->name is mandatory
for platform data cases
- added an extra check in dsa_parse_member() for a NULL pdata pointer
- fixed a bunch of checkpatch errors and warnings
Changes in v2:
- Rebased against latest net-next/master
- Moved dev_find_class() to device_find_class() into drivers/base/core.c
- Moved dev_to_net_device into net/core/dev.c
- Utilize dsa_chip_data directly instead of dsa_platform_data
- Augmented dsa_chip_data to be multi-CPU port ready
Changes from last submission (few months back):
- rebased against latest net-next
- do not introduce dsa2_platform_data which was overkill and was meant to
allow us to do exaclty the same things with platform data and Device Tree
we use the existing dsa_platform_data instead
- properly register MDIO devices when the MDIO bus is registered and associate
platform_data with them
- add a change to the Orion platform code to demonstrate how this can be used
Thank you
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Utilize the ability to pass board specific MDIO bus information towards a
particular MDIO device thus allowing us to provide the per-port switch layout
to the Marvell 88E6XXX switch driver.
Since we would end-up with conflicting registration paths, do not register the
"dsa" platform device anymore.
Note that the MDIO devices registered by code in net/dsa/dsa2.c does not
parse a dsa_platform_data, but directly take a dsa_chip_data (specific
to a single switch chip), so we update the different call sites to pass
this structure down to orion_ge00_switch_init().
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow board support code to collect pre-declarations for MDIO devices by
registering them with mdiobus_register_board_info(). SPI and I2C buses
have a similar feature, we were missing this for MDIO devices, but this
is particularly useful for e.g: MDIO-connected switches which need to
provide their port layout (often board-specific) to a MDIO Ethernet
switch driver.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow drivers to use the new DSA API with platform data. Most of the
code in net/dsa/dsa2.c does not rely so much on device_nodes and can get
the same information from platform_data instead.
We purposely do not support distributed configurations with platform
data, so drivers should be providing a pointer to a 'struct
dsa_chip_data' structure if they wish to communicate per-port layout.
Multiple CPUs port could potentially be supported and dsa_chip_data is
extended to receive up to one reference to an upstream network device
per port described by a dsa_chip_data structure.
dsa_dev_to_net_device() increments the network device's reference count,
so we intentionally call dev_put() to be consistent with the DT-enabled
path, until we have a generic notifier based solution.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation for using this function in net/dsa/dsa2.c, rename the function
to make its scope DSA specific, and export it.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move the remaining port configuration code which varies per device
into port.c, using ops were necessary. This makes
mv88e6xxx_6185_family() and mv88e6xxx_6095_family() unused, so remove
them.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The mv88e6390 MDIO bus controllers can support for clause 45 accesses.
The internal SERDES interfaces need this, and it is likely external
10GHz PHYs will be clause 45.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn says:
====================
Set the CMODE for mv88e6390 ports
The mv88e6390 ports 9 & 10 allow there CMODE to be set. CMODE is part
of what linux defines as phy-mode. Add the needed phy-modes to linux,
and add code which will act upon the phy-mode property to configure
the switch port.
These patches have been posted before as part of a bigger patchset
which has now been broken up. I've added the received reviewed by
tags, and added device tree documentation.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Unlike most ports, ports 9 and 10 of the 6390X family have configurable
PHY modes. Set the mode as part of adjust_link().
Ordering is important, because the SERDES interfaces connected to
ports 9 and 10 can be split and assigned to other ports. The CMODE has
to be correctly set before the SERDES interface on another port can be
configured. Such configuration is likely to be performed in
port_enable() and port_disabled(), called on slave_open() and
slave_close().
The simple case is port 9 and 10 are used for 'CPU' or 'DSA'. In this
case, the CMODE is set via a phy-mode in dsa_cpu_dsa_setup(), which is
called early in the switch setup.
When ports 9 or 10 are used as user ports, and have a fixed-phy, when
the fixed fixed-phy is attached, dsa_slave_adjust_link() is called,
which results in the adjust_link function being called, setting the
cmode. The port_enable() will for other ports will be called much
later.
When ports 9 or 10 are used as user ports and have a real phy attached
which does not use all the available SERDES interface, e.g. a 1Gbps
SGMII, there is currently no mechanism in place to set the CMODE of
the port from software. It must be hoped the stripping resistors are
correct.
At the same time, add a function to get the cmode. This will be needed
when configuring the SERDES interfaces.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The mv88e6390 ports 9 and 10 supports some additional PHY modes. Add
these modes to the PHY core so they can be used in the binding.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
At enabling the audio, we modify AUD_CONFIG register bit 0. So far,
it does read-modify-write procedure with a special hack for the
channel bits due to the silicon bug. But we can optimize it by
remembering the AUD_CONFIG register value privately. This simplifies
the things a lot.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
- Eric updates the git repository for the BCM283x development
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Merge tag 'arm-soc/for-4.11/maintainers' of http://github.com/Broadcom/stblinux into next/soc
Pull "Broadcom maintainers changes for 4.11" from Florian Fainelli:
This pull request contains Broadcom MAINTAINERS entries updates for 4.11:
- Eric updates the git repository for the BCM283x development
* tag 'arm-soc/for-4.11/maintainers' of http://github.com/Broadcom/stblinux:
MAINTAINERS: Update for the current location of the bcm2835 tree.
Some patches to support two new SoCs: the H2+ and the V3s.
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Merge tag 'sunxi-core-for-4.11' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/soc
Pull "Allwinner core changes for 4.11" from Maxime Ripard:
Some patches to support two new SoCs: the H2+ and the V3s.
* tag 'sunxi-core-for-4.11' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
arm: sunxi: add support for V3s SoC
ARM: sunxi: add support for H2+ SoC
SoC part of the support for the for Marvell switches with integrated
CPUs based on Armada XP: the SMP support is slightly different.
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Merge tag 'mvebu-soc-4.11-2' of git://git.infradead.org/linux-mvebu into next/soc
Pull "mvebu soc for 4.11 (part 2)" from Gregory CLEMENT:
SoC part of the support for the for Marvell switches with integrated
CPUs based on Armada XP: the SMP support is slightly different.
* tag 'mvebu-soc-4.11-2' of git://git.infradead.org/linux-mvebu:
arm: mvebu: support for SMP on 98DX3336 SoC
Support for the audio codec and Mali GPU for the A33
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Merge tag 'sunxi-dt-for-4.11-2' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/dt
Pull "Allwinner DT changes for 4.11, part 2" from Maxime Ripard:
Support for the audio codec and Mali GPU for the A33
* tag 'sunxi-dt-for-4.11-2' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: dts: sun8i: sinlinx: Enable audio nodes
ARM: dts: sun8i: parrot: Enable audio nodes
ARM: dts: sun8i: Add audio codec, dai and card for A33
ARM: sun8i: dt: Add mali node
dt-bindings: gpu: Add Mali Utgard bindings
The usual chunk of DT changes, most notably:
- Support for the H2+ and the V3s
- CPUFreq support for the A33
- SPDIF support for the A31 and H3
- New boards: Beelink X2, Lichee Pi One, Lichee Pi Zero,
Orange Pi Zero
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Merge tag 'sunxi-dt-for-4.11' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/dt
Pull "Allwinner DT changes for 4.11" from Maxime Ripard:
The usual chunk of DT changes, most notably:
- Support for the H2+ and the V3s
- CPUFreq support for the A33
- SPDIF support for the A31 and H3
- New boards: Beelink X2, Lichee Pi One, Lichee Pi Zero,
Orange Pi Zero
* tag 'sunxi-dt-for-4.11' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: (42 commits)
ARM: dts: sun8i-h3: Add SPDIF to the Beelink X2
ARM: dts: sun8i-h3: Add the SPDIF block to the H3
ARM: dts: sun8i-h3: Add SPDIF TX pin to the H3
ARM: dts: sun8i-h3: Add dts for the Beelink X2 STB
ARM: sun8i: sina33: Enable display
ARM: sun8i: a23/a33: Add the oscillators accuracy
ARM: sun8i: a23/a33: Enable the real LOSC and use it
ARM: dts: sunxi: add support for Lichee Pi Zero board
ARM: dts: sunxi: add dtsi file for V3s SoC
ARM: dts: sun6i: sina31s: Enable USB OTG controller in peripheral mode
ARM: dts: sun8i: reference-design: use AXP223 DTSI
ARM: dts: sun8i: parrot: use AXP223 DTSI
ARM: dts: sun8i: sina33: use AXP223 DTSI
ARM: dts: sun8i: a33-olinuxino: use AXP223 DTSI
ARM: dts: add DTSI for AXP223
dt-bindings: power: axp20x-usb: add axp223 compatible
ARM: dts: sun7i: Add wifi dt node on Banana Pro
ARM: dts: sun6i: Add SPDIF to the Mele I7
devicetree: bindings: Add vendor prefix for Shenzhen Xunlong Software
ARM: dts: sun8i-h3: orange-pi-pc: Enable audio codec
...
Ben Hutchings says:
====================
net: Fix on-stack USB buffers
Allocating USB buffers on the stack is not portable, and no longer
works on x86_64 (with VMAP_STACK enabled as per default). This
series fixes all the instances I could find where USB networking
drivers do that.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Allocating USB buffers on the stack is not portable, and no longer
works on x86_64 (with VMAP_STACK enabled as per default).
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allocating USB buffers on the stack is not portable, and no longer
works on x86_64 (with VMAP_STACK enabled as per default).
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allocating USB buffers on the stack is not portable, and no longer
works on x86_64 (with VMAP_STACK enabled as per default).
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
References: https://bugs.debian.org/852556
Reported-by: Lisandro Damián Nicanor Pérez Meyer <lisandro@debian.org>
Tested-by: Lisandro Damián Nicanor Pérez Meyer <lisandro@debian.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
John Fastabend says:
====================
XDP adjust head support for virtio
This series adds adjust head support for virtio. The following is my
test setup. I use qemu + virtio as follows,
./x86_64-softmmu/qemu-system-x86_64 \
-hda /var/lib/libvirt/images/Fedora-test0.img \
-m 4096 -enable-kvm -smp 2 -netdev tap,id=hn0,queues=4,vhost=on \
-device virtio-net-pci,netdev=hn0,mq=on,guest_tso4=off,guest_tso6=off,guest_ecn=off,guest_ufo=off,vectors=9
In order to use XDP with virtio until LRO is supported TSO must be
turned off in the host. The important fields in the above command line
are the following,
guest_tso4=off,guest_tso6=off,guest_ecn=off,guest_ufo=off
Also note it is possible to conusme more queues than can be supported
because when XDP is enabled for retransmit XDP attempts to use a queue
per cpu. My standard queue count is 'queues=4'.
After loading the VM I run the relevant XDP test programs in,
./sammples/bpf
For this series I tested xdp1, xdp2, and xdp_tx_iptunnel. I usually test
with iperf (-d option to get bidirectional traffic), ping, and pktgen.
I also have a modified xdp1 that returns XDP_PASS on any packet to ensure
the normal traffic path to the stack continues to work with XDP loaded.
It would be great to automate this soon. At the moment I do it by hand
which is starting to get tedious.
v2: original series dropped trace points after merge.
====================
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for XDP adjust head by allocating a 256B header region
that XDP programs can grow into. This is only enabled when a XDP
program is loaded.
In order to ensure that we do not have to unwind queue headroom push
queue setup below bpf_prog_add. It reads better to do a prog ref
unwind vs another queue setup call.
At the moment this code must do a full reset to ensure old buffers
without headroom on program add or with headroom on program removal
are not used incorrectly in the datapath. Ideally we would only
have to disable/enable the RX queues being updated but there is no
API to do this at the moment in virtio so use the big hammer. In
practice it is likely not that big of a problem as this will only
happen when XDP is enabled/disabled changing programs does not
require the reset. There is some risk that the driver may either
have an allocation failure or for some reason fail to correctly
negotiate with the underlying backend in this case the driver will
be left uninitialized. I have not seen this ever happen on my test
systems and for what its worth this same failure case can occur
from probe and other contexts in virtio framework.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For XDP we will need to reset the queues to allow for buffer headroom
to be configured. In order to do this we need to essentially run the
freeze()/restore() code path. Unfortunately the locking requirements
between the freeze/restore and reset paths are different however so
we can not simply reuse the code.
This patch refactors the code path and adds a reset helper routine.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Factor out qp assignment.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
At this point the do_xdp_prog is mostly if/else branches handling
the different modes of virtio_net. So remove it and handle running
the program in the per mode handlers.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For XDP use case and to allow ethtool reset tests it is useful to be
able to use reset paths from contexts where rtnl lock is already
held.
This requries updating virtnet_set_queues and free_receive_bufs the
two places where rtnl_lock is taken in virtio_net. To do this we
use the following pattern,
_foo(...) { do stuff }
foo(...) { rtnl_lock(); _foo(...); rtnl_unlock()};
this allows us to use freeze()/restore() flow from both contexts.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The TS-72xx/73xx boards have a CPLD watchdog which is configured to
reset the board after 8 seconds, if the kernel is large enough that this
takes about this time to decompress the kernel, we will encounter a
spurious reboot.
Do not pull ts72xx.h, but instead locally define what we need to disable
the watchdog.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This platform data is revoked: the drivers are getting the DMA
configuration from the device tree, it has been done like that
since the DMA support was merged and this data has not been used
since. The remaining auxdata is also unused.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
1. Add descriptive user-friendly label names for power domains. This
makes debugging easier.
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Merge tag 'samsung-dt-4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt
Pull "Samsung DeviceTree update for v4.11, third round" from Krzysztof Kozlowski
1. Add descriptive user-friendly label names for power domains. This
makes debugging easier.
* tag 'samsung-dt-4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
ARM: dts: exynos: Add labels to all existing power domains
