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Enable the thermal monitor driver and the AVE ethernet driver
implemented on UniPhier SoCs.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into next/soc
Pull "ARM64: stratix10: defconfig updates for 4.17" from Dinh Nguyen:
-enables STMMAC_ETH controller that is present on Stratix10
* tag 'stratix10_defconfig_for_v4.17' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
arm64: defconfig: enable stmmac ethernet to defconfig
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This patch enables the CONFIG_STMMAC_ETH to the default arm64 defconfig:
-CONFIG_STMMAC_ETH=m
+CONFIG_STMMAC_ETH=y
+CONFIG_DWMAC_IPQ806X=m
+CONFIG_DWMAC_MESON=m
+CONFIG_DWMAC_ROCKCHIP=m
+CONFIG_DWMAC_SUNXI=m
+CONFIG_DWMAC_SUN8I=m
The STMMAC ethernet controller is on the Stratix10 platform, and thus needs
driver to be in the kernel image for NFS to work.
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/agross/linux into next/soc
Pull "Qualcomm ARM64 Based defconfig Updates for v4.17" from Andy Gross:
* Enable cpufreq governors, QCOM TSENS, and QCOM APCS driver
* tag 'qcom-arm64-defconfig-for-4.17' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/agross/linux:
arm64: defconfig: enable more cpufreq governors
arm64: defconfig: enable thermal sensor on QCOM platforms
arm64: defconfig: Enable the APCS IPC driver on Qualcomm platforms
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Enable the various CPUFREQ governors and statistics to ease development.
Don't change the default governor - performance governor.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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Enable the driver for the TSENS IP that is present across several QCOM
SoCs.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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The APCS block is present on several Qualcomm SoCs e.g. 8916, 8996. On the
8916 it is needed to enable the clock controller that in turn enables
cpufreq on the platform while on the 8996 it is needed for communication
with RPM.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into next/soc
Pull "Amlogic defconfig fixes for v4.17" from Kevin Hilman
* tag 'amlogic-defconfig' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
arm64: defconfig: enable MESON EFUSE
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Enable nvmem meson efuse driver as a module
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc
Pull "Renesas ARM64 Based SoC Defconfig Updates for v4.17" from Simon Horman:
Enable the following to allow them to be more widely exercised:
* Newly added R8A77965 and R8A77980 SoCs
* PWM and USB as used on R-Car Gen3 SoCs
* tag 'renesas-arm64-defconfig-for-v4.17' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
arm64: defconfig: enable R8A77965 SoC
arm64: defconfig: Enable PWM and USB for R-Car
arm64: defconfig: enable R8A77980 SoC
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Enable the Renesas R-Car M3-N (R8A77965) SoC in the ARM64 defconfig.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Enables PWM controller, USB-DMAC that is used by HS-USB, USB 3.0
peripheral controller and USB 3.0 PHY for R-Car SoCs.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Enable the Renesas R-Car V3H (R8A77980) SoC in the ARM64 defconfig.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/soc
Pull "arm64: Default configuration updates for v4.17-rc1" from Thierry Reding:
Enable the BPMP thermal and CPU frequency drivers as well as make sure
that the Tegra SMMU is enabled by default because there's no fun without
it. Also enable initial Tegra194 support.
* tag 'tegra-for-4.17-arm64-defconfig' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
arm64: defconfig: Enable the Tegra SMMU by default
arm64: defconfig: Enable CONFIG_TEGRA_BPMP_THERMAL
arm64: defconfig: Enable CONFIG_ARM_TEGRA186_CPUFREQ
arm64: defconfig: Enable NVIDIA Tegra194 support
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Display and graphics can't work together without an SMMU, so it is
effectively always getting enabled anyway.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Enable Tegra BPMP thermal sensor support by default, built as a module.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Enable Tegra186 CPU frequency scaling support by default.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Enable NVIDIA Tegra194 support in the default 64-bit ARM configuration.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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into next/soc
Pull "ARM64: hisilicon: defconfig updates for 4.17" from Wei Xu:
- Enable deadline IO scheduler to improve the performnace for some
usecaese without changing the default IO scheduler
* tag 'hisi-defconfig-for-4.17' of git://github.com/hisilicon/linux-hisi:
arm64: defconfig: enable IOSCHED_DEADLINE
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For certain workloads the deadline IO scheduler offers
particular advantages over other schedulers and has shown
to perform better, so enable it.
The default IO scheduler is unaffected by this change, and
currently is CFQ.
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
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Enable support in arm64's defconfig for Socionext SynQuacer based
platforms, by enabling the arch Kconfig symbol, and enabling builtin
support for the ethernet, GPIO and SDHCI controllers
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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New crypto drivers have been introduced in v4.16 that implement the
SHA-512, SHA3 and SM3 secure hash algorithms using ARMv8.2 optional
instructions. Add these drivers to arm64's defconfig as modules.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"This is the first set of bugfixes for ARM SoCs, fixing a couple of
stability problems, mostly on TI OMAP and Rockchips platforms:
- OMAP2 hwmod clocks must be enabled in the correct order
- OMAP3 Wakeup from resume through PRM IRQ was unreliable
- one regression on OMAP5 caused by a kexec fix
- Rockchip ethernet needs some settings for stable operation on
Rock64
- Rockchip based Chrombook Plus needs another clock setting for
stable display suspend/resume
- Rockchip based phyCORE-RK3288 was able to run at an invalid CPU
clock frequency
- Rockchip MMC link was sometimes unreliable
- multiple fixes to avoid crashes in the Broadcom STB DPFE driver
Other minor changes include:
- Devicetree fixes for incorrect hardware description (rockchip,
omap, Gemini, amlogic)
- some MAINTAINER file updates to correct email and git addresses
- some fixes addressing 'make W=1' dtc warnings (broadcom, amlogic,
cavium, qualcomm, hisilicon, zx)
- fixes for LTO-compilation (orion, davinci, clps711x)
- one fix for an incorrect Kconfig errata selection
- a memory leak in the OMAP timer driver
- a kernel data leak in OMAP1 debugfs files"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (38 commits)
MAINTAINERS: update entries for ARM/STM32
ARM: dts: bcm283x: Move arm-pmu out of soc node
ARM: dts: bcm283x: Fix unit address of local_intc
ARM: dts: NSP: Fix amount of RAM on BCM958625HR
ARM: dts: Set D-Link DNS-313 SATA to muxmode 0
ARM: omap2: set CONFIG_LIRC=y in defconfig
ARM: dts: imx6dl: Include correct dtsi file for Engicam i.CoreM6 DualLite/Solo RQS
memory: brcmstb: dpfe: support new way of passing data from the DCPU
memory: brcmstb: dpfe: fix type declaration of variable "ret"
memory: brcmstb: dpfe: properly mask vendor error bits
ARM: BCM: dts: Remove leading 0x and 0s from bindings notation
ARM: orion: fix orion_ge00_switch_board_info initialization
ARM: davinci: mark spi_board_info arrays as const
ARM: clps711x: mark clps711x_compat as const
arm: zx: dts: Remove leading 0x and 0s from bindings notation
arm64: dts: Remove leading 0x and 0s from bindings notation
arm64: dts: cavium: fix PCI bus dtc warnings
MAINTAINERS: ARM: at91: update my email address
soc: imx: gpc: de-register power domains only if initialized
ARM: dts: rockchip: Fix DWMMC clocks
...
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Pull "Rockchip dts64 fixes for 4.16" from Heiko Stübner:
Fixes of dwmmc tuning clocks that may make probing HS cards fail,
adding the grf-vio clock to the edp so that it can also be build
as module, correct pcie ep-gpio on the sapphire board and finally
a fix that makes the gmac work at gigabit speeds on the rk3328-rock64.
* tag 'v4.16-rockchip-dts64fixes-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
arm64: dts: rockchip: Fix DWMMC clocks
arm64: dts: rockchip: introduce pclk_vio_grf in rk3399-eDP device node
arm64: dts: rockchip: correct ep-gpios for rk3399-sapphire
arm64: dts: rockchip: fix rock64 gmac2io stability issues
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Trying to boot an RK3328 box with an HS200-capable eMMC, I see said eMMC
fail to initialise as it can't run its tuning procedure, because the
sample clock is missing. Upon closer inspection, whilst the clock is
present in the DT, its name is subtly incorrect per the binding, so
__of_clk_get_by_name() never finds it. By inspection, the drive clock
suffers from a similar problem, so has never worked properly either.
Fix up all instances of the incorrect clock names across the 64-bit DTs.
Fixes: d717f7352ec6 ("arm64: dts: rockchip: add sdmmc/sdio/emmc nodes for RK3328 SoCs")
Fixes: b790c2cab5ca ("arm64: dts: add Rockchip rk3368 core dtsi and board dts for the r88 board")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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The pclk_vio_grf supply power for VIO GRF IOs, if it is disabled,
driver would failed to operate the VIO GRF registers.
The clock is optional but one of the side effects of don't have this clk
is that the Samsung Chromebook Plus fails to recover display after a
suspend/resume with following errors:
rockchip-dp ff970000.edp: Input stream clock not detected.
rockchip-dp ff970000.edp: Timeout of video streamclk ok
rockchip-dp ff970000.edp: unable to config video
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
[this should also fix display failures when building rockchip-drm as module]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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The endpoint control gpio for rk3399-sapphire boards is gpio2_a4,
so correct it now.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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This commit enables thresh dma mode as this forces to disable checksuming,
and chooses delay values which make the interface stable.
These changes are needed, because ROCK64 is faced with two problems:
1. tx checksuming does not work with packets larger than 1498,
2. the default delays for tx/rx are not stable when using 1Gbps connection.
Delays were found out with:
https://github.com/ayufan-rock64/linux-build/tree/master/recipes/gmac-delays-test
Signed-off-by: Kamil Trzciński <ayufan@ayufan.eu>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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Improve the DTS files by removing all the leading "0x" and zeros to fix the
following dtc warnings:
Warning (unit_address_format): Node /XXX unit name should not have leading "0x"
and
Warning (unit_address_format): Node /XXX unit name should not have leading 0s
Converted using the following command:
find . -type f \( -iname *.dts -o -iname *.dtsi \) -exec sed -E -i -e "s/@0x([0-9a-fA-F\.]+)\s?\{/@\L\1 \{/g" -e "s/@0+([0-9a-fA-F\.]+)\s?\{/@\L\1 \{/g" {} +
For simplicity, two sed expressions were used to solve each warnings separately.
To make the regex expression more robust a few other issues were resolved,
namely setting unit-address to lower case, and adding a whitespace before the
the opening curly brace:
https://elinux.org/Device_Tree_Linux#Linux_conventions
This is a follow up to commit 4c9847b7375a ("dt-bindings: Remove leading 0x from bindings notation")
Reported-by: David Daney <ddaney@caviumnetworks.com>
Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into fixes
Amlogic fixes for v4.16-rc1
- DT: fix UART address ranges
- DT: enable PHY interrupts
* tag 'amlogic-fixes' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
ARM64: dts: meson: uart: fix address space range
ARM64: dts: meson-gxl: add internal ethernet PHY irq
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The address space range is actually 0x18, fixed here.
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
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Add the interrupt of the internal ethernet PHY
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
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dtc recently added PCI bus checks. Fix these warnings:
arch/arm64/boot/dts/cavium/thunder2-99xx.dtb: Warning (pci_bridge): Node /pci missing bus-range for PCI bridge
arch/arm64/boot/dts/cavium/thunder2-99xx.dtb: Warning (unit_address_vs_reg): Node /pci has a reg or ranges property, but no unit name
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Jayachandran C <jnair@caviumnetworks.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull cleanup patchlet from Thomas Gleixner:
"A single commit removing a bunch of bogus double semicolons all over
the tree"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
treewide/trivial: Remove ';;$' typo noise
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On lkml suggestions were made to split up such trivial typo fixes into per subsystem
patches:
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -439,7 +439,7 @@ setup_uga32(void **uga_handle, unsigned long size, u32 *width, u32 *height)
struct efi_uga_draw_protocol *uga = NULL, *first_uga;
efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID;
unsigned long nr_ugas;
- u32 *handles = (u32 *)uga_handle;;
+ u32 *handles = (u32 *)uga_handle;
efi_status_t status = EFI_INVALID_PARAMETER;
int i;
This patch is the result of the following script:
$ sed -i 's/;;$/;/g' $(git grep -E ';;$' | grep "\.[ch]:" | grep -vwE 'for|ia64' | cut -d: -f1 | sort | uniq)
... followed by manual review to make sure it's all good.
Splitting this up is just crazy talk, let's get over with this and just do it.
Reported-by: Pavel Machek <pavel@ucw.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Pull networking fixes from David Miller:
1) Fix TTL offset calculation in mac80211 mesh code, from Peter Oh.
2) Fix races with procfs in ipt_CLUSTERIP, from Cong Wang.
3) Memory leak fix in lpm_trie BPF map code, from Yonghong Song.
4) Need to use GFP_ATOMIC in BPF cpumap allocations, from Jason Wang.
5) Fix potential deadlocks in netfilter getsockopt() code paths, from
Paolo Abeni.
6) Netfilter stackpointer size checks really are needed to validate
user input, from Florian Westphal.
7) Missing timer init in x_tables, from Paolo Abeni.
8) Don't use WQ_MEM_RECLAIM in mac80211 hwsim, from Johannes Berg.
9) When an ibmvnic device is brought down then back up again, it can be
sent queue entries from a previous session, handle this properly
instead of crashing. From Thomas Falcon.
10) Fix TCP checksum on LRO buffers in mlx5e, from Gal Pressman.
11) When we are dumping filters in cls_api, the output SKB is empty, and
the filter we are dumping is too large for the space in the SKB, we
should return -EMSGSIZE like other netlink dump operations do.
Otherwise userland has no signal that is needs to increase the size
of its read buffer. From Roman Kapl.
12) Several XDP fixes for virtio_net, from Jesper Dangaard Brouer.
13) Module refcount leak in netlink when a dump start fails, from Jason
Donenfeld.
14) Handle sub-optimal GSO sizes better in TCP BBR congestion control,
from Eric Dumazet.
15) Releasing bpf per-cpu arraymaps can take a long time, add a
condtional scheduling point. From Eric Dumazet.
16) Implement retpolines for tail calls in x64 and arm64 bpf JITs. From
Daniel Borkmann.
17) Fix page leak in gianfar driver, from Andy Spencer.
18) Missed clearing of estimator scratch buffer, from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (76 commits)
net_sched: gen_estimator: fix broken estimators based on percpu stats
gianfar: simplify FCS handling and fix memory leak
ipv6 sit: work around bogus gcc-8 -Wrestrict warning
macvlan: fix use-after-free in macvlan_common_newlink()
bpf, arm64: fix out of bounds access in tail call
bpf, x64: implement retpoline for tail call
rxrpc: Fix send in rxrpc_send_data_packet()
net: aquantia: Fix error handling in aq_pci_probe()
bpf: fix rcu lockdep warning for lpm_trie map_free callback
bpf: add schedule points in percpu arrays management
regulatory: add NUL to request alpha2
ibmvnic: Fix early release of login buffer
net/smc9194: Remove bogus CONFIG_MAC reference
net: ipv4: Set addr_type in hash_keys for forwarded case
tcp_bbr: better deal with suboptimal GSO
smsc75xx: fix smsc75xx_set_features()
netlink: put module reference if dump start fails
selftests/bpf/test_maps: exit child process without error in ENOMEM case
selftests/bpf: update gitignore with test_libbpf_open
selftests/bpf: tcpbpf_kern: use in6_* macros from glibc
..
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I recently noticed a crash on arm64 when feeding a bogus index
into BPF tail call helper. The crash would not occur when the
interpreter is used, but only in case of JIT. Output looks as
follows:
[ 347.007486] Unable to handle kernel paging request at virtual address fffb850e96492510
[...]
[ 347.043065] [fffb850e96492510] address between user and kernel address ranges
[ 347.050205] Internal error: Oops: 96000004 [#1] SMP
[...]
[ 347.190829] x13: 0000000000000000 x12: 0000000000000000
[ 347.196128] x11: fffc047ebe782800 x10: ffff808fd7d0fd10
[ 347.201427] x9 : 0000000000000000 x8 : 0000000000000000
[ 347.206726] x7 : 0000000000000000 x6 : 001c991738000000
[ 347.212025] x5 : 0000000000000018 x4 : 000000000000ba5a
[ 347.217325] x3 : 00000000000329c4 x2 : ffff808fd7cf0500
[ 347.222625] x1 : ffff808fd7d0fc00 x0 : ffff808fd7cf0500
[ 347.227926] Process test_verifier (pid: 4548, stack limit = 0x000000007467fa61)
[ 347.235221] Call trace:
[ 347.237656] 0xffff000002f3a4fc
[ 347.240784] bpf_test_run+0x78/0xf8
[ 347.244260] bpf_prog_test_run_skb+0x148/0x230
[ 347.248694] SyS_bpf+0x77c/0x1110
[ 347.251999] el0_svc_naked+0x30/0x34
[ 347.255564] Code: 9100075a d280220a 8b0a002a d37df04b (f86b694b)
[...]
In this case the index used in BPF r3 is the same as in r1
at the time of the call, meaning we fed a pointer as index;
here, it had the value 0xffff808fd7cf0500 which sits in x2.
While I found tail calls to be working in general (also for
hitting the error cases), I noticed the following in the code
emission:
# bpftool p d j i 988
[...]
38: ldr w10, [x1,x10]
3c: cmp w2, w10
40: b.ge 0x000000000000007c <-- signed cmp
44: mov x10, #0x20 // #32
48: cmp x26, x10
4c: b.gt 0x000000000000007c
50: add x26, x26, #0x1
54: mov x10, #0x110 // #272
58: add x10, x1, x10
5c: lsl x11, x2, #3
60: ldr x11, [x10,x11] <-- faulting insn (f86b694b)
64: cbz x11, 0x000000000000007c
[...]
Meaning, the tests passed because commit ddb55992b04d ("arm64:
bpf: implement bpf_tail_call() helper") was using signed compares
instead of unsigned which as a result had the test wrongly passing.
Change this but also the tail call count test both into unsigned
and cap the index as u32. Latter we did as well in 90caccdd8cc0
("bpf: fix bpf_tail_call() x64 JIT") and is needed in addition here,
too. Tested on HiSilicon Hi1616.
Result after patch:
# bpftool p d j i 268
[...]
38: ldr w10, [x1,x10]
3c: add w2, w2, #0x0
40: cmp w2, w10
44: b.cs 0x0000000000000080
48: mov x10, #0x20 // #32
4c: cmp x26, x10
50: b.hi 0x0000000000000080
54: add x26, x26, #0x1
58: mov x10, #0x110 // #272
5c: add x10, x1, x10
60: lsl x11, x2, #3
64: ldr x11, [x10,x11]
68: cbz x11, 0x0000000000000080
[...]
Fixes: ddb55992b04d ("arm64: bpf: implement bpf_tail_call() helper")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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do_task_stat() calls get_wchan(), which further does unwind_frame().
unwind_frame() restores frame->pc to original value in case function
graph tracer has modified a return address (LR) in a stack frame to hook
a function return. However, if function graph tracer has hit a filtered
function, then we can't unwind it as ftrace_push_return_trace() has
biased the index(frame->graph) with a 'huge negative'
offset(-FTRACE_NOTRACE_DEPTH).
Moreover, arm64 stack walker defines index(frame->graph) as unsigned
int, which can not compare a -ve number.
Similar problem we can have with calling of walk_stackframe() from
save_stack_trace_tsk() or dump_backtrace().
This patch fixes unwind_frame() to test the index for -ve value and
restore index accordingly before we can restore frame->pc.
Reproducer:
cd /sys/kernel/debug/tracing/
echo schedule > set_graph_notrace
echo 1 > options/display-graph
echo wakeup > current_tracer
ps -ef | grep -i agent
Above commands result in:
Unable to handle kernel paging request at virtual address ffff801bd3d1e000
pgd = ffff8003cbe97c00
[ffff801bd3d1e000] *pgd=0000000000000000, *pud=0000000000000000
Internal error: Oops: 96000006 [#1] SMP
[...]
CPU: 5 PID: 11696 Comm: ps Not tainted 4.11.0+ #33
[...]
task: ffff8003c21ba000 task.stack: ffff8003cc6c0000
PC is at unwind_frame+0x12c/0x180
LR is at get_wchan+0xd4/0x134
pc : [<ffff00000808892c>] lr : [<ffff0000080860b8>] pstate: 60000145
sp : ffff8003cc6c3ab0
x29: ffff8003cc6c3ab0 x28: 0000000000000001
x27: 0000000000000026 x26: 0000000000000026
x25: 00000000000012d8 x24: 0000000000000000
x23: ffff8003c1c04000 x22: ffff000008c83000
x21: ffff8003c1c00000 x20: 000000000000000f
x19: ffff8003c1bc0000 x18: 0000fffffc593690
x17: 0000000000000000 x16: 0000000000000001
x15: 0000b855670e2b60 x14: 0003e97f22cf1d0f
x13: 0000000000000001 x12: 0000000000000000
x11: 00000000e8f4883e x10: 0000000154f47ec8
x9 : 0000000070f367c0 x8 : 0000000000000000
x7 : 00008003f7290000 x6 : 0000000000000018
x5 : 0000000000000000 x4 : ffff8003c1c03cb0
x3 : ffff8003c1c03ca0 x2 : 00000017ffe80000
x1 : ffff8003cc6c3af8 x0 : ffff8003d3e9e000
Process ps (pid: 11696, stack limit = 0xffff8003cc6c0000)
Stack: (0xffff8003cc6c3ab0 to 0xffff8003cc6c4000)
[...]
[<ffff00000808892c>] unwind_frame+0x12c/0x180
[<ffff000008305008>] do_task_stat+0x864/0x870
[<ffff000008305c44>] proc_tgid_stat+0x3c/0x48
[<ffff0000082fde0c>] proc_single_show+0x5c/0xb8
[<ffff0000082b27e0>] seq_read+0x160/0x414
[<ffff000008289e6c>] __vfs_read+0x58/0x164
[<ffff00000828b164>] vfs_read+0x88/0x144
[<ffff00000828c2e8>] SyS_read+0x60/0xc0
[<ffff0000080834a0>] __sys_trace_return+0x0/0x4
Fixes: 20380bb390a4 (arm64: ftrace: fix a stack tracer's output under function graph tracer)
Signed-off-by: Pratyush Anand <panand@redhat.com>
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
[catalin.marinas@arm.com: replace WARN_ON with WARN_ON_ONCE]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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ioremap_page_range doesn't honour break-before-make and attempts to put
down huge mappings (using p*d_set_huge) over the top of pre-existing
table entries. This leads to us leaking page table memory and also gives
rise to TLB conflicts and spurious aborts, which have been seen in
practice on Cortex-A75.
Until this has been resolved, refuse to put block mappings when the
existing entry is found to be present.
Fixes: 324420bf91f60 ("arm64: add support for ioremap() block mappings")
Reported-by: Hanjun Guo <hanjun.guo@linaro.org>
Reported-by: Lei Li <lious.lilei@hisilicon.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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The ID_AA64DFR0_EL1.PMUVer field doesn't follow the usual ID registers
scheme. While value 0xf indicates a non-architected PMU is implemented,
values 0x1 to 0xe indicate an increasingly featureful architected PMU,
as if the field were unsigned.
For more details, see ARM DDI 0487C.a, D10.1.4, "Alternative ID scheme
used for the Performance Monitors Extension version".
Currently, we treat the field as signed, and erroneously bail out for
values 0x8 to 0xe. Let's correct that.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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__show_regs pretty prints PC and LR by attempting to map them to kernel
function names to improve the utility of crash reports. Unfortunately,
this mapping is applied even when the pt_regs corresponds to user mode,
resulting in a KASLR oracle.
Avoid this issue by only looking up the function symbols when the register
state indicates that we're actually running at EL1.
Cc: <stable@vger.kernel.org>
Reported-by: NCSC Security <security@ncsc.gov.uk>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Stop printing a (ratelimited) kernel message for each instance of an
unimplemented syscall being called. Userland making an unimplemented
syscall is not necessarily misbehaviour and to be expected with a
current userland running on an older kernel. Also, the current message
looks scary to users but does not actually indicate a real problem nor
help them narrow down the cause. Just rely on sys_ni_syscall() to return
-ENOSYS.
Cc: <stable@vger.kernel.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Michael Weiser <michael.weiser@gmx.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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aarch64 unhandled signal kernel messages are very verbose, suggesting
them to be more of a debugging aid:
sigsegv[33]: unhandled level 2 translation fault (11) at 0x00000000, esr
0x92000046, in sigsegv[400000+71000]
CPU: 1 PID: 33 Comm: sigsegv Tainted: G W 4.15.0-rc3+ #3
Hardware name: linux,dummy-virt (DT)
pstate: 60000000 (nZCv daif -PAN -UAO)
pc : 0x4003f4
lr : 0x4006bc
sp : 0000fffffe94a060
x29: 0000fffffe94a070 x28: 0000000000000000
x27: 0000000000000000 x26: 0000000000000000
x25: 0000000000000000 x24: 00000000004001b0
x23: 0000000000486ac8 x22: 00000000004001c8
x21: 0000000000000000 x20: 0000000000400be8
x19: 0000000000400b30 x18: 0000000000484728
x17: 000000000865ffc8 x16: 000000000000270f
x15: 00000000000000b0 x14: 0000000000000002
x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0008000020008008
x9 : 000000000000000f x8 : ffffffffffffffff
x7 : 0004000000000000 x6 : ffffffffffffffff
x5 : 0000000000000000 x4 : 0000000000000000
x3 : 00000000004003e4 x2 : 0000fffffe94a1e8
x1 : 000000000000000a x0 : 0000000000000000
Disable them by default, so they can be enabled using
/proc/sys/debug/exception-trace.
Cc: <stable@vger.kernel.org>
Signed-off-by: Michael Weiser <michael.weiser@gmx.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Our field definitions for CTR_EL0 suffer from a number of problems:
- The IDC and DIC fields are missing, which causes us to enable CTR
trapping on CPUs with either of these returning non-zero values.
- The ERG is FTR_LOWER_SAFE, whereas it should be treated like CWG as
FTR_HIGHER_SAFE so that applications can use it to avoid false sharing.
- [nit] A RES1 field is described as "RAO"
This patch updates the CTR_EL0 field definitions to fix these issues.
Cc: <stable@vger.kernel.org>
Cc: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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In converting __range_ok() into a static inline, I inadvertently made
it more type-safe, but without considering the ordering of the relevant
conversions. This leads to quite a lot of Sparse noise about the fact
that we use __chk_user_ptr() after addr has already been converted from
a user pointer to an unsigned long.
Rather than just adding another cast for the sake of shutting Sparse up,
it seems reasonable to rework the types to make logical sense (although
the resulting codegen for __range_ok() remains identical). The only
callers this affects directly are our compat traps where the inferred
"user-pointer-ness" of a register value now warrants explicit casting.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Since commit e1a50de37860 (arm64: cputype: Silence Sparse warnings),
compilation of arm64 architecture is broken with the following error
messages:
AR arch/arm64/kernel/built-in.o
arch/arm64/kernel/head.S: Assembler messages:
arch/arm64/kernel/head.S:677: Error: found 'L', expected: ')'
arch/arm64/kernel/head.S:677: Error: found 'L', expected: ')'
arch/arm64/kernel/head.S:677: Error: found 'L', expected: ')'
arch/arm64/kernel/head.S:677: Error: junk at end of line, first
unrecognized character is `L'
arch/arm64/kernel/head.S:677: Error: unexpected characters following
instruction at operand 2 -- `movz x1,:abs_g1_s:0xff00ffffffUL'
arch/arm64/kernel/head.S:677: Error: unexpected characters following
instruction at operand 2 -- `movk x1,:abs_g0_nc:0xff00ffffffUL'
This patch fixes the same by using the UL() macro correctly for
assigning the MPIDR_HWID_BITMASK macro value.
Fixes: e1a50de37860 ("arm64: cputype: Silence Sparse warnings")
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Bhupesh Sharma <bhsharma@redhat.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Sparse makes a fair bit of noise about our MPIDR mask being implicitly
long - let's explicitly describe it as such rather than just relying on
the value forcing automatic promotion.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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In many cases, page tables can be accessed concurrently by either another
CPU (due to things like fast gup) or by the hardware page table walker
itself, which may set access/dirty bits. In such cases, it is important
to use READ_ONCE/WRITE_ONCE when accessing page table entries so that
entries cannot be torn, merged or subject to apparent loss of coherence
due to compiler transformations.
Whilst there are some scenarios where this cannot happen (e.g. pinned
kernel mappings for the linear region), the overhead of using READ_ONCE
/WRITE_ONCE everywhere is minimal and makes the code an awful lot easier
to reason about. This patch consistently uses these macros in the arch
code, as well as explicitly namespacing pointers to page table entries
from the entries themselves by using adopting a 'p' suffix for the former
(as is sometimes used elsewhere in the kernel source).
Tested-by: Yury Norov <ynorov@caviumnetworks.com>
Tested-by: Richard Ruigrok <rruigrok@codeaurora.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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When KASAN is enabled, the swapper page table contains many identical
mappings of the zero page, which can lead to a stall during boot whilst
the G -> nG code continually walks the same page table entries looking
for global mappings.
This patch sets the nG bit (bit 11, which is IGNORED) in table entries
after processing the subtree so we can easily skip them if we see them
a second time.
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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References to CPU part number MIDR_QCOM_FALKOR were dropped from the
mailing list patch due to mainline/arm64 branch dependency. So this
patch adds the missing part number.
Fixes: ec82b567a74f ("arm64: Implement branch predictor hardening for Falkor")
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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