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2020-02-09Merge tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildLinus Torvalds1-2/+2
Pull more Kbuild updates from Masahiro Yamada: - fix randconfig to generate a sane .config - rename hostprogs-y / always to hostprogs / always-y, which are more natual syntax. - optimize scripts/kallsyms - fix yes2modconfig and mod2yesconfig - make multiple directory targets ('make foo/ bar/') work * tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: make multiple directory targets work kconfig: Invalidate all symbols after changing to y or m. kallsyms: fix type of kallsyms_token_table[] scripts/kallsyms: change table to store (strcut sym_entry *) scripts/kallsyms: rename local variables in read_symbol() kbuild: rename hostprogs-y/always to hostprogs/always-y kbuild: fix the document to use extra-y for vmlinux.lds kconfig: fix broken dependency in randconfig-generated .config
2020-02-04Merge tag 'powerpc-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds4-4/+4
Pull powerpc updates from Michael Ellerman: "A pretty small batch for us, and apologies for it being a bit late, I wanted to sneak Christophe's user_access_begin() series in. Summary: - Implement user_access_begin() and friends for our platforms that support controlling kernel access to userspace. - Enable CONFIG_VMAP_STACK on 32-bit Book3S and 8xx. - Some tweaks to our pseries IOMMU code to allow SVMs ("secure" virtual machines) to use the IOMMU. - Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE to the 32-bit VDSO, and some other improvements. - A series to use the PCI hotplug framework to control opencapi card's so that they can be reset and re-read after flashing a new FPGA image. As well as other minor fixes and improvements as usual. Thanks to: Alastair D'Silva, Alexandre Ghiti, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Bai Yingjie, Chen Zhou, Christophe Leroy, Frederic Barrat, Greg Kurz, Jason A. Donenfeld, Joel Stanley, Jordan Niethe, Julia Lawall, Krzysztof Kozlowski, Laurent Dufour, Laurentiu Tudor, Linus Walleij, Michael Bringmann, Nathan Chancellor, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Peter Ujfalusi, Pingfan Liu, Ram Pai, Randy Dunlap, Russell Currey, Sam Bobroff, Sebastian Andrzej Siewior, Shawn Anastasio, Stephen Rothwell, Steve Best, Sukadev Bhattiprolu, Thiago Jung Bauermann, Tyrel Datwyler, Vaibhav Jain" * tag 'powerpc-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (131 commits) powerpc: configs: Cleanup old Kconfig options powerpc/configs/skiroot: Enable some more hardening options powerpc/configs/skiroot: Disable xmon default & enable reboot on panic powerpc/configs/skiroot: Enable security features powerpc/configs/skiroot: Update for symbol movement only powerpc/configs/skiroot: Drop default n CONFIG_CRYPTO_ECHAINIV powerpc/configs/skiroot: Drop HID_LOGITECH powerpc/configs: Drop NET_VENDOR_HP which moved to staging powerpc/configs: NET_CADENCE became NET_VENDOR_CADENCE powerpc/configs: Drop CONFIG_QLGE which moved to staging powerpc: Do not consider weak unresolved symbol relocations as bad powerpc/32s: Fix kasan_early_hash_table() for CONFIG_VMAP_STACK powerpc: indent to improve Kconfig readability powerpc: Provide initial documentation for PAPR hcalls powerpc: Implement user_access_save() and user_access_restore() powerpc: Implement user_access_begin and friends powerpc/32s: Prepare prevent_user_access() for user_access_end() powerpc/32s: Drop NULL addr verification powerpc/kuap: Fix set direction in allow/prevent_user_access() powerpc/32s: Fix bad_kuap_fault() ...
2020-02-04kbuild: rename hostprogs-y/always to hostprogs/always-yMasahiro Yamada1-2/+2
In old days, the "host-progs" syntax was used for specifying host programs. It was renamed to the current "hostprogs-y" in 2004. It is typically useful in scripts/Makefile because it allows Kbuild to selectively compile host programs based on the kernel configuration. This commit renames like follows: always -> always-y hostprogs-y -> hostprogs So, scripts/Makefile will look like this: always-$(CONFIG_BUILD_BIN2C) += ... always-$(CONFIG_KALLSYMS) += ... ... hostprogs := $(always-y) $(always-m) I think this makes more sense because a host program is always a host program, irrespective of the kernel configuration. We want to specify which ones to compile by CONFIG options, so always-y will be handier. The "always", "hostprogs-y", "hostprogs-m" will be kept for backward compatibility for a while. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-01-23powerpc/fsl/dts: add fsl,erratum-a011043Madalin Bucur18-0/+18
Add fsl,erratum-a011043 to internal MDIO buses. Software may get false read error when reading internal PCS registers through MDIO. As a workaround, all internal MDIO accesses should ignore the MDIO_CFG[MDIO_RD_ER] bit. Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-23powerpc/devicetrees: Change 'gpios' to 'cs-gpios' on fsl, spi nodesChristophe Leroy3-3/+3
Since commit 0f0581b24bd0 ("spi: fsl: Convert to use CS GPIO descriptors"), the prefered way to define chipselect GPIOs is using 'cs-gpios' property instead of the legacy 'gpios' property. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/7556683b57d8ce100855857f03d1cd3d2903d045.1574943062.git.christophe.leroy@c-s.fr
2020-01-06powerpc/44x: Adjust indentation in ibm4xx_denali_fixup_memsizeNathan Chancellor1-1/+1
Clang warns: ../arch/powerpc/boot/4xx.c:231:3: warning: misleading indentation; statement is not part of the previous 'else' [-Wmisleading-indentation] val = SDRAM0_READ(DDR0_42); ^ ../arch/powerpc/boot/4xx.c:227:2: note: previous statement is here else ^ This is because there is a space at the beginning of this line; remove it so that the indentation is consistent according to the Linux kernel coding style and clang no longer warns. Fixes: d23f5099297c ("[POWERPC] 4xx: Adds decoding of 440SPE memory size to boot wrapper library") Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://github.com/ClangBuiltLinux/linux/issues/780 Link: https://lore.kernel.org/r/20191209200338.12546-1-natechancellor@gmail.com
2019-12-02Merge tag 'devicetree-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linuxLinus Torvalds1-0/+2
Pull Devicetree updates from Rob Herring: - DT schemas for PWM, syscon, power domains, SRAM, syscon-reboot, syscon-poweroff, renesas-irqc, simple-pm-bus, renesas-bsc, pwm-rcar, Renesas tpu, at24 eeprom, rtc-sh, Allwinner PS/2, sharp,ld-d5116z01b panel, Arm SMMU, max77650, Meson CEC, Amlogic canvas and DWC3 glue, Allwinner A10 mUSB and CAN, TI Davinci MDIO, QCom QCS404 interconnect, Unisoc/Spreadtrum SoCs and UART - Convert a bunch of Samsung bindings to DT schema - Convert a bunch of ST stm32 bindings to DT schema - Realtek and Exynos additions to Arm Mali bindings - Fix schema errors in RiscV CPU schema - Various schema fixes from improved meta-schema checks - Improve the handling of 'dma-ranges' and in particular fix DMA mask setup on PCI bridges - Fix a memory leak in add_changeset_property() and DT unit tests. - Several documentation improvements for schema validation - Rework build rules to improve schema validation errors - Color output for dtx_diff * tag 'devicetree-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (138 commits) libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h dt-bindings: arm: Remove leftover axentia.txt of: unittest: fix memory leak in attach_node_and_children of: overlay: add_changeset_property() memory leak dt-bindings: interrupt-controller: arm,gic-v3: Add missing type to interrupt-partition-* nodes dt-bindings: firmware: ixp4xx: Drop redundant minItems/maxItems dt-bindings: power: Rename back power_domain.txt bindings to fix references dt-bindings: i2c: stm32: Migrate i2c-stm32 documentation to yaml dt-bindings: mtd: Convert stm32 fmc2-nand bindings to json-schema dt-bindings: remoteproc: convert stm32-rproc to json-schema dt-bindings: mailbox: convert stm32-ipcc to json-schema dt-bindings: mfd: Convert stm32 low power timers bindings to json-schema dt-bindings: interrupt-controller: Convert stm32-exti to json-schema dt-bindings: crypto: Convert stm32 HASH bindings to json-schema dt-bindings: rng: Convert stm32 RNG bindings to json-schema dt-bindings: pwm: Convert Samsung PWM bindings to json-schema dt-bindings: pwm: Convert PWM bindings to json-schema dt-bindings: serial: Add a new compatible string for SC9863A dt-bindings: serial: Convert sprd-uart to json-schema dt-bindings: arm: Add bindings for Unisoc SC9863A ...
2019-11-26libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.hMasahiro Yamada1-0/+2
The DTC v1.5.1 added references to (U)INT32_MAX. This is no problem for user-space programs since <stdint.h> defines (U)INT32_MAX along with (u)int32_t. For the kernel space, libfdt_env.h needs to be adjusted before we pull in the changes. In the kernel, we usually use s/u32 instead of (u)int32_t for the fixed-width types. Accordingly, we already have S/U32_MAX for their max values. So, we should not add (U)INT32_MAX to <linux/limits.h> any more. Instead, add them to the in-kernel libfdt_env.h to compile the latest libfdt. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Rob Herring <robh@kernel.org>
2019-11-17powerpc/kmcent2: add ranges to the pci bridgesValentin Longchamp1-0/+36
This removes the warnings about the fact that the 4 pci bridges (i.e. the 4 pci hosts) don't have any ranges. Signed-off-by: Valentin Longchamp <valentin@longchamp.me> Signed-off-by: Scott Wood <oss@buserror.net>
2019-11-17powerpc/kmcent2: update the ethernet devices' phy propertiesValentin Longchamp1-5/+11
Change all phy-connection-type properties to phy-mode that are better supported by the fman driver. Use the more readable fixed-link node for the 2 sgmii links. Change the RGMII link to rgmii-id as the clock delays are added by the phy. Signed-off-by: Valentin Longchamp <valentin@longchamp.me> Acked-by: Madalin Bucur <madalin.bucur@nxp.com> Signed-off-by: Scott Wood <oss@buserror.net>
2019-10-01kbuild: remove ar-option and KBUILD_ARFLAGSMasahiro Yamada1-1/+1
Commit 40df759e2b9e ("kbuild: Fix build with binutils <= 2.19") introduced ar-option and KBUILD_ARFLAGS to deal with old binutils. According to Documentation/process/changes.rst, the current minimal supported version of binutils is 2.21 so you can assume the 'D' option is always supported. Not only GNU ar but also llvm-ar supports it. With the 'D' option hard-coded, there is no more user of ar-option or KBUILD_ARFLAGS. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com>
2019-08-30powerpc: Add support for adding an ESM blob to the zImage wrapperBenjamin Herrenschmidt4-3/+72
For secure VMs, the signing tool will create a ticket called the "ESM blob" for the Enter Secure Mode ultravisor call with the signatures of the kernel and initrd among other things. This adds support to the wrapper script for adding that blob via the "-e" option to the zImage.pseries. It also adds code to the zImage wrapper itself to retrieve and if necessary relocate the blob, and pass its address to Linux via the device-tree, to be later consumed by prom_init. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [ bauerman: Minor adjustments to some comments. ] Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190820021326.6884-4-bauerman@linux.ibm.com
2019-07-13Merge tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds5-16/+42
Pull powerpc updates from Michael Ellerman: "Notable changes: - Removal of the NPU DMA code, used by the out-of-tree Nvidia driver, as well as some other functions only used by drivers that haven't (yet?) made it upstream. - A fix for a bug in our handling of hardware watchpoints (eg. perf record -e mem: ...) which could lead to register corruption and kernel crashes. - Enable HAVE_ARCH_HUGE_VMAP, which allows us to use large pages for vmalloc when using the Radix MMU. - A large but incremental rewrite of our exception handling code to use gas macros rather than multiple levels of nested CPP macros. And the usual small fixes, cleanups and improvements. Thanks to: Alastair D'Silva, Alexey Kardashevskiy, Andreas Schwab, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Cédric Le Goater, Christian Lamparter, Christophe Leroy, Christophe Lombard, Christoph Hellwig, Daniel Axtens, Denis Efremov, Enrico Weigelt, Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Geliang Tang, Gen Zhang, Greg Kroah-Hartman, Greg Kurz, Gustavo Romero, Krzysztof Kozlowski, Madhavan Srinivasan, Masahiro Yamada, Mathieu Malaterre, Michael Neuling, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nishad Kamdar, Oliver O'Halloran, Qian Cai, Ravi Bangoria, Sachin Sant, Sam Bobroff, Satheesh Rajendran, Segher Boessenkool, Shaokun Zhang, Shawn Anastasio, Stewart Smith, Suraj Jitindar Singh, Thiago Jung Bauermann, YueHaibing" * tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (163 commits) powerpc/powernv/idle: Fix restore of SPRN_LDBAR for POWER9 stop state. powerpc/eeh: Handle hugepages in ioremap space ocxl: Update for AFU descriptor template version 1.1 powerpc/boot: pass CONFIG options in a simpler and more robust way powerpc/boot: add {get, put}_unaligned_be32 to xz_config.h powerpc/irq: Don't WARN continuously in arch_local_irq_restore() powerpc/module64: Use symbolic instructions names. powerpc/module32: Use symbolic instructions names. powerpc: Move PPC_HA() PPC_HI() and PPC_LO() to ppc-opcode.h powerpc/module64: Fix comment in R_PPC64_ENTRY handling powerpc/boot: Add lzo support for uImage powerpc/boot: Add lzma support for uImage powerpc/boot: don't force gzipped uImage powerpc/8xx: Add microcode patch to move SMC parameter RAM. powerpc/8xx: Use IO accessors in microcode programming. powerpc/8xx: replace #ifdefs by IS_ENABLED() in microcode.c powerpc/8xx: refactor programming of microcode CPM params. powerpc/8xx: refactor printing of microcode patch name. powerpc/8xx: Refactor microcode write powerpc/8xx: refactor writing of CPM microcode arrays ...
2019-07-10powerpc/boot: pass CONFIG options in a simpler and more robust wayMasahiro Yamada3-16/+3
Commit 5e9dcb6188a4 ("powerpc/boot: Expose Kconfig symbols to wrapper") was wrong, but commit e41b93a6be57 ("powerpc/boot: Fix build failures with -j 1") was also wrong. The correct dependency is: $(obj)/serial.o: $(obj)/autoconf.h However, I do not see the reason why we need to copy autoconf.h to arch/power/boot/. Nor do I see consistency in the way of passing CONFIG options. decompress.c references CONFIG_KERNEL_GZIP and CONFIG_KERNEL_XZ, which are passed via the command line. serial.c includes autoconf.h to reference a couple of CONFIG options, but this is fragile because we often forget to include "autoconf.h" from source files. In fact, it is already broken. ppc_asm.h references CONFIG_PPC_8xx, but utils.S is not given any way to access CONFIG options. So, CONFIG_PPC_8xx is never defined here. Pass $(LINUXINCLUDE) to make sure CONFIG options are accessible from all .c and .S files in arch/powerpc/boot/. I also removed the -traditional flag to make include/linux/kconfig.h work. This flag makes the preprocessor imitate the behavior of the pre-standard C compiler, but I do not understand why it is necessary. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190705100144.28785-2-yamada.masahiro@socionext.com
2019-07-10powerpc/boot: add {get, put}_unaligned_be32 to xz_config.hMasahiro Yamada1-0/+20
The next commit will make the way of passing CONFIG options more robust. Unfortunately, it would uncover another hidden issue; without this commit, skiroot_defconfig would be broken like this: | WRAP arch/powerpc/boot/zImage.pseries | arch/powerpc/boot/wrapper.a(decompress.o): In function `bcj_powerpc.isra.10': | decompress.c:(.text+0x720): undefined reference to `get_unaligned_be32' | decompress.c:(.text+0x7a8): undefined reference to `put_unaligned_be32' | make[1]: *** [arch/powerpc/boot/Makefile;383: arch/powerpc/boot/zImage.pseries] Error 1 | make: *** [arch/powerpc/Makefile;295: zImage] Error 2 skiroot_defconfig is the only defconfig that enables CONFIG_KERNEL_XZ for ppc, which has never been correctly built before. I figured out the root cause in lib/decompress_unxz.c: | #ifdef CONFIG_PPC | # define XZ_DEC_POWERPC | #endif CONFIG_PPC is undefined here in the ppc bootwrapper because autoconf.h is not included except by arch/powerpc/boot/serial.c XZ_DEC_POWERPC is not defined, therefore, bcj_powerpc() is not compiled for the bootwrapper. With the next commit passing CONFIG_PPC correctly, we would realize that {get,put}_unaligned_be32 was missing. Unlike the other decompressors, the ppc bootwrapper duplicates all the necessary helpers in arch/powerpc/boot/. The other architectures define __KERNEL__ and pull in helpers for building the decompressors. If ppc bootwrapper had defined __KERNEL__, lib/xz/xz_private.h would have included <asm/unaligned.h>: | #ifdef __KERNEL__ | # include <linux/xz.h> | # include <linux/kernel.h> | # include <asm/unaligned.h> However, doing so would cause tons of definition conflicts since the bootwrapper has duplicated everything. I just added copies of {get,put}_unaligned_be32, following the bootwrapper coding convention. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190705100144.28785-1-yamada.masahiro@socionext.com
2019-07-05powerpc/boot: Add lzo support for uImageChristophe Leroy2-1/+6
This patch allows to generate lzo compressed uImage Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-05powerpc/boot: Add lzma support for uImageChristophe Leroy2-1/+6
This patch allows to generate lzma compressed uImage Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-07-05powerpc/boot: don't force gzipped uImageChristophe Leroy1-1/+10
This patch modifies the generation of uImage by handing over the selected compression type instead of forcing gzip Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner37-149/+37
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441Thomas Gleixner4-16/+4
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 419Thomas Gleixner6-24/+6
Based on 1 normalized pattern(s): this is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 9 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190113.515971893@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 350Thomas Gleixner1-2/+1
Based on 1 normalized pattern(s): this program may be used under the terms of version 2 of the gnu general public license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 1 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000437.975825562@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167Thomas Gleixner4-52/+4
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 83 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.021731668@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 161Thomas Gleixner1-15/+1
Based on 1 normalized pattern(s): this library is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this library is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this library if not write to the free software foundation inc 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.564858142@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156Thomas Gleixner5-77/+5
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner148-754/+148
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 40Thomas Gleixner1-6/+1
Based on 1 normalized pattern(s): this is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 14 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520170857.915677517@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-03powerpc/boot: Fix missing check of lseek() return valueBo YU1-1/+5
This is detected by Coverity scan: CID: 1440481 Signed-off-by: Bo YU <tsu.yubo@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-05-03powerpc/dts/fsl: add crypto node alias for B4Horia Geantă1-0/+1
crypto node alias is needed by U-boot to identify the node and perform fix-ups, like adding "fsl,sec-era" property. Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-03-10Merge tag 'kbuild-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildLinus Torvalds1-1/+1
Pull Kbuild updates from Masahiro Yamada: - do not generate unneeded top-level built-in.a - let git ignore O= directory entirely - optimize scripts/kallsyms slightly - exclude DWARF info from *.s regardless of config options - fix GCC toolchain search path for Clang to prepare ld.lld support - do not generate modules.order when CONFIG_MODULES is disabled - simplify single target rules and remove VPATH for external module build - allow to add optional flags to dpkg-buildpackage when building deb-pkg - move some compiler option tests from Makefile to Kconfig - various Makefile cleanups * tag 'kbuild-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (40 commits) kbuild: remove scripts/basic/% build target kbuild: use -Werror=implicit-... instead of -Werror-implicit-... kbuild: clean up scripts/gcc-version.sh kbuild: remove cc-version macro kbuild: update comment block of scripts/clang-version.sh kbuild: remove commented-out INITRD_COMPRESS kbuild: move -gsplit-dwarf, -gdwarf-4 option tests to Kconfig kbuild: [bin]deb-pkg: add DPKG_FLAGS variable kbuild: move ".config not found!" message from Kconfig to Makefile kbuild: invoke syncconfig if include/config/auto.conf.cmd is missing kbuild: simplify single target rules kbuild: remove empty rules for makefiles kbuild: make -r/-R effective in top Makefile for old Make versions kbuild: move tools_silent to a more relevant place kbuild: compute false-positive -Wmaybe-uninitialized cases in Kconfig kbuild: refactor cc-cross-prefix implementation kbuild: hardcode genksyms path and remove GENKSYMS variable scripts/gdb: refactor rules for symlink creation kbuild: create symlink to vmlinux-gdb.py in scripts_gdb target scripts/gdb: do not descend into scripts/gdb from scripts ...
2019-02-22powerpc/dts: Standardize DTS status assignments from "ok" to "okay"Robert P. J. Day4-4/+4
While the current kernel drivers/of/ code allows developers to be sloppy and use a DTS status value of "ok", the current DTSpec 0.1 makes it clear that the proper spelling is "okay", so fix the small number of PowerPC .dts files that do this. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-01-28kbuild: add real-prereqs shorthand for $(filter-out FORCE,$^)Masahiro Yamada1-1/+1
In Kbuild, if_changed and friends must have FORCE as a prerequisite. Hence, $(filter-out FORCE,$^) or $(filter-out $(PHONY),$^) is a common idiom to get the names of all the prerequisites except phony targets. Add real-prereqs as a shorthand. Note: We cannot replace $(filter %.o,$^) in cmd_link_multi-m because $^ may include auto-generated dependencies from the .*.cmd file when a single object module is changed into a multi object module. Refer to commit 69ea912fda74 ("kbuild: remove unneeded link_multi_deps"). I added some comment to avoid accidental breakage. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Rob Herring <robh@kernel.org>
2019-01-15powerpc: wii.dts: Add GPIO keysJonathan Neuschäfer1-0/+17
The Wii has POWER and EJECT buttons, which are connected through normalization logic to the GPIO controller (the length of an assertion of these signals is always the same, regardless of how long the user pressed the buttons). Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-01-15powerpc: wii.dts: Add interrupt-related properties to GPIO nodeJonathan Neuschäfer1-0/+5
The Hollywood GPIO controller is connected to the Hollywood PIC (&PIC1) at IRQs 10 and 11; IRQ 10 for GPIO lines that are configured for access by the PPC, 11 for GPIO lines that are configured for access by the ARM926. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-01-14powerpc/dts: Build virtex dtbsCorentin Labbe1-0/+1
I wanted to test the virtex440-ml507 qemu machine and found that the dtb for it was not built. All powerpc dtbs are only built when CONFIG_OF_ALL_DTBS is set which depend on COMPILE_TEST. This patch enables building of the virtex dtbs when CONFIG_XILINX_VIRTEX440_GENERIC_BOARD is enabled. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> [mpe: Put both targets on a single line] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-29Merge tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildLinus Torvalds1-0/+5
Pull Kbuild updates from Masahiro Yamada: "Kbuild core: - remove unneeded $(call cc-option,...) switches - consolidate Clang compiler flags into CLANG_FLAGS - announce the deprecation of SUBDIRS - fix single target build for external module - simplify the dependencies of 'prepare' stage targets - allow fixdep to directly write to .*.cmd files - simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS - change if_changed_rule to accept multi-line recipe - move .SECONDARY special target to scripts/Kbuild.include - remove redundant 'set -e' - improve parallel execution for CONFIG_HEADERS_CHECK - misc cleanups Treewide fixes and cleanups - set Clang flags correctly for PowerPC boot images - fix UML build error with CONFIG_GCC_PLUGINS - remove unneeded patterns from .gitignore files - refactor firmware/Makefile - remove unneeded rules for *offsets.s - avoid unneeded regeneration of intermediate .s files - clean up ./Kbuild Modpost: - remove unused -M, -K options - fix false positive warnings about section mismatch - use simple devtable lookup instead of linker magic - misc cleanups Coccinelle: - relax boolinit.cocci checks for overall consistency - fix warning messages of boolinit.cocci Other tools: - improve -dirty check of scripts/setlocalversion - add a tool to generate compile_commands.json from .*.cmd files" * tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (51 commits) kbuild: remove unused cmd_gentimeconst kbuild: remove $(obj)/ prefixes in ./Kbuild treewide: add intermediate .s files to targets treewide: remove explicit rules for *offsets.s firmware: refactor firmware/Makefile firmware: remove unnecessary patterns from .gitignore scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore um: remove unused filechk_gen_header in Makefile scripts: add a tool to produce a compile_commands.json file kbuild: add -Werror=implicit-int flag unconditionally kbuild: add -Werror=strict-prototypes flag unconditionally kbuild: add -fno-PIE flag unconditionally scripts: coccinelle: Correct warning message scripts: coccinelle: only suggest true/false in files that already use them kbuild: handle part-of-module correctly for *.ll and *.symtypes kbuild: refactor part-of-module kbuild: refactor quiet_modtag kbuild: remove redundant quiet_modtag for $(obj-m) kbuild: refactor Makefile.asm-generic user/Makefile: Fix typo and capitalization in comment section ...
2018-12-24Merge branch 'next' of https://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into nextMichael Ellerman27-543/+182
Freescale updates from Scott: "Highlights include elimination of legacy clock bindings use from dts files, an 83xx watchdog handler, fixes to old dts interrupt errors, and some minor cleanup."
2018-12-22powerpc/zImage: Also check for stdout-pathOliver O'Halloran1-1/+2
The /chosen/linux,stdout-path is "deprecated" in favour of /chosen/stdout-path so we should be checking for both. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-21powerpc/dts/fsl: Fix dtc-flagged interrupt errorsScott Wood5-134/+132
mpc8641_hpcn was updated to 4-cell interrupt specifiers, but PCI interrupt-map was not updated. It was also missing #interrupt-cells on the outer PCI buses. p1020rdb-pc was updated to 4-cell interrupt specifiers, but the ethernet-phy nodes weren't updated. mpc832x_rdb had an invalid "interrupts = <0>" on the ethernet-phy nodes. Besides being the wrong number of cells, 0 is not a valid IPIC interrupt according to ipic.c. Presumably it was meant to indicate that these PHYs are not connected to an interrupt. Signed-off-by: Scott Wood <oss@buserror.net>
2018-12-21powerpc/fsl: Use new clockgen bindingScott Wood22-409/+50
The driver retains compatibility with old device trees, but we don't want the old nodes lying around to be copied, or used as a reference (some of the mux options are incorrect), or even just being clutter. Signed-off-by: Scott Wood <oss@buserror.net> Signed-off-by: Tang Yuantian <andy.tang@nxp.com> [scottwood: removed sysclk node added by Andy] Signed-off-by: Scott Wood <oss@buserror.net>
2018-12-20powerpc/44x/bamboo: Fix PCI rangeBenjamin Herrenschmidt1-1/+3
The bamboo dts has a bug: it uses a non-naturally aligned range for PCI memory space. This isnt' supported by the code, thus causing PCI to break on this system. This is due to the fact that while the chip memory map has 1G reserved for PCI memory, it's only 512M aligned. The code doesn't know how to split that into 2 different PMMs and fails, so limit the region to 512M. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-06powerpc/boot: Fix build failures with -j 1Michael Ellerman1-1/+1
In commit 5e9dcb6188a4 ("powerpc/boot: Expose Kconfig symbols to wrapper") we added a dependency to serial.c on autoconf.h: $(obj)/serial.c: $(obj)/autoconf.h This works when building in-tree (ie. with KBUILD_OUTPUT unset) because the obj tree is the src tree. But when building with eg. O=build and -j 1 the build fails: gcc ... -I../arch/powerpc/boot -c -o arch/powerpc/boot/serial.o arch/powerpc/boot/serial.c gcc: error: arch/powerpc/boot/serial.c: No such file or directory Why this is only happening with -j 1 is not clear, when building with -j greater than 1 somehow we decide to look for serial.c in the src tree (../), eg: gcc -I../arch/powerpc/boot -c -o arch/powerpc/boot/serial.o ../arch/powerpc/boot/serial.c Regardless we shouldn't be specifying a dependency on serial.c in the build tree, we want to add a dependency to the version in $(srctree) so fix the rule to say that. Fixes: 5e9dcb6188a4 ("powerpc/boot: Expose Kconfig symbols to wrapper") Tested-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-11-27powerpc: Fix COFF zImage booting on old powermacsPaul Mackerras1-1/+3
Commit 6975a783d7b4 ("powerpc/boot: Allow building the zImage wrapper as a relocatable ET_DYN", 2011-04-12) changed the procedure descriptor at the start of crt0.S to have a hard-coded start address of 0x500000 rather than a reference to _zimage_start, presumably because having a reference to a symbol introduced a relocation which is awkward to handle in a position-independent executable. Unfortunately, what is at 0x500000 in the COFF image is not the first instruction, but the procedure descriptor itself, that is, a word containing 0x500000, which is not a valid instruction. Hence, booting a COFF zImage results in a "DEFAULT CATCH!, code=FFF00700" message from Open Firmware. This fixes the problem by (a) putting the procedure descriptor in the data section and (b) adding a branch to _zimage_start as the first instruction in the program. Fixes: 6975a783d7b4 ("powerpc/boot: Allow building the zImage wrapper as a relocatable ET_DYN") Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-11-14powerpc/boot: Set target when cross-compiling for clangJoel Stanley1-0/+5
Clang needs to be told which target it is building for when cross compiling. Link: https://github.com/ClangBuiltLinux/linux/issues/259 Signed-off-by: Joel Stanley <joel@jms.id.au> Tested-by: Daniel Axtens <dja@axtens.net> # powerpc 64-bit BE Acked-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-11-02Merge tag 'powerpc-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds2-3/+14
Pull powerpc fixes from Michael Ellerman: "Some things that I missed due to travel, or that came in late. Two fixes also going to stable: - A revert of a buggy change to the 8xx TLB miss handlers. - Our flushing of SPE (Signal Processing Engine) registers on fork was broken. Other changes: - A change to the KVM decrementer emulation to use proper APIs. - Some cleanups to the way we do code patching in the 8xx code. - Expose the maximum possible memory for the system in /proc/powerpc/lparcfg. - Merge some updates from Scott: "a couple device tree updates, and a fix for a missing prototype warning" A few other minor fixes and a handful of fixes for our selftests. Thanks to: Aravinda Prasad, Breno Leitao, Camelia Groza, Christophe Leroy, Felipe Rechia, Joel Stanley, Naveen N. Rao, Paul Mackerras, Scott Wood, Tyrel Datwyler" * tag 'powerpc-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (21 commits) selftests/powerpc: Fix compilation issue due to asm label selftests/powerpc/cache_shape: Fix out-of-tree build selftests/powerpc/switch_endian: Fix out-of-tree build selftests/powerpc/pmu: Link ebb tests with -no-pie selftests/powerpc/signal: Fix out-of-tree build selftests/powerpc/ptrace: Fix out-of-tree build powerpc/xmon: Relax frame size for clang selftests: powerpc: Fix warning for security subdir selftests/powerpc: Relax L1d miss targets for rfi_flush test powerpc/process: Fix flush_all_to_thread for SPE powerpc/pseries: add missing cpumask.h include file selftests/powerpc: Fix ptrace tm failure KVM: PPC: Use exported tb_to_ns() function in decrementer emulation powerpc/pseries: Export maximum memory value powerpc/8xx: Use patch_site for perf counters setup powerpc/8xx: Use patch_site for memory setup patching powerpc/code-patching: Add a helper to get the address of a patch_site Revert "powerpc/8xx: Use L1 entry APG to handle _PAGE_ACCESSED for CONFIG_SWAP" powerpc/8xx: add missing header in 8xx_mmu.c powerpc/8xx: Add DT node for using the SEC engine of the MPC885 ...
2018-10-26Merge tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds5-12/+13
Pull powerpc updates from Michael Ellerman: "Notable changes: - A large series to rewrite our SLB miss handling, replacing a lot of fairly complicated asm with much fewer lines of C. - Following on from that, we now maintain a cache of SLB entries for each process and preload them on context switch. Leading to a 27% speedup for our context switch benchmark on Power9. - Improvements to our handling of SLB multi-hit errors. We now print more debug information when they occur, and try to continue running by flushing the SLB and reloading, rather than treating them as fatal. - Enable THP migration on 64-bit Book3S machines (eg. Power7/8/9). - Add support for physical memory up to 2PB in the linear mapping on 64-bit Book3S. We only support up to 512TB as regular system memory, otherwise the percpu allocator runs out of vmalloc space. - Add stack protector support for 32 and 64-bit, with a per-task canary. - Add support for PTRACE_SYSEMU and PTRACE_SYSEMU_SINGLESTEP. - Support recognising "big cores" on Power9, where two SMT4 cores are presented to us as a single SMT8 core. - A large series to cleanup some of our ioremap handling and PTE flags. - Add a driver for the PAPR SCM (storage class memory) interface, allowing guests to operate on SCM devices (acked by Dan). - Changes to our ftrace code to handle very large kernels, where we need to use a trampoline to get to ftrace_caller(). And many other smaller enhancements and cleanups. Thanks to: Alan Modra, Alistair Popple, Aneesh Kumar K.V, Anton Blanchard, Aravinda Prasad, Bartlomiej Zolnierkiewicz, Benjamin Herrenschmidt, Breno Leitao, Cédric Le Goater, Christophe Leroy, Christophe Lombard, Dan Carpenter, Daniel Axtens, Finn Thain, Gautham R. Shenoy, Gustavo Romero, Haren Myneni, Hari Bathini, Jia Hongtao, Joel Stanley, John Allen, Laurent Dufour, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Hairgrove, Masahiro Yamada, Michael Bringmann, Michael Neuling, Michal Suchanek, Murilo Opsfelder Araujo, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Paul Mackerras, Petr Vorel, Rashmica Gupta, Reza Arbab, Rob Herring, Sam Bobroff, Samuel Mendoza-Jonas, Scott Wood, Stan Johnson, Stephen Rothwell, Stewart Smith, Suraj Jitindar Singh, Tyrel Datwyler, Vaibhav Jain, Vasant Hegde, YueHaibing, zhong jiang" * tag 'powerpc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (221 commits) Revert "selftests/powerpc: Fix out-of-tree build errors" powerpc/msi: Fix compile error on mpc83xx powerpc: Fix stack protector crashes on CPU hotplug powerpc/traps: restore recoverability of machine_check interrupts powerpc/64/module: REL32 relocation range check powerpc/64s/radix: Fix radix__flush_tlb_collapsed_pmd double flushing pmd selftests/powerpc: Add a test of wild bctr powerpc/mm: Fix page table dump to work on Radix powerpc/mm/radix: Display if mappings are exec or not powerpc/mm/radix: Simplify split mapping logic powerpc/mm/radix: Remove the retry in the split mapping logic powerpc/mm/radix: Fix small page at boundary when splitting powerpc/mm/radix: Fix overuse of small pages in splitting logic powerpc/mm/radix: Fix off-by-one in split mapping logic powerpc/ftrace: Handle large kernel configs powerpc/mm: Fix WARN_ON with THP NUMA migration selftests/powerpc: Fix out-of-tree build errors powerpc/time: no steal_time when CONFIG_PPC_SPLPAR is not selected powerpc/time: Only set CONFIG_ARCH_HAS_SCALED_CPUTIME on PPC64 powerpc/time: isolate scaled cputime accounting in dedicated functions. ...
2018-10-22powerpc/8xx: Add DT node for using the SEC engine of the MPC885Christophe Leroy1-1/+12
The MPC885 has SEC engine version 1.2 with the following details: - Number of Crypto channels: 1 - Exec Units: DEU, MDEU and AESU - Available descriptors: 00010, 00100, 00110, 01000, 11000, 11010 It is also supposed to have descriptor 00000, but it doesn't work properly so we keep it out for the moment. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Scott Wood <oss@buserror.net>
2018-10-20powerpc/dts/fsl: t2080rdb: reorder the Cortina PHY XFI lanesCamelia Groza1-2/+2
According to the T2080RDB schematics, for the CS4315 PHY, the XFI 1 lane is connected to SFP 2 and the XFI 2 lane is connected to SFP 1. Change the device tree to reflect the correct PHY order and port association. Signed-off-by: Camelia Groza <camelia.groza@nxp.com> Signed-off-by: Scott Wood <oss@buserror.net>
2018-10-13powerpc/boot: Build boot wrapper with optimisationsJoel Stanley1-1/+1
The boot wrapper is currently built with -Os. By building with O2 we can meaningfully reduce the time decompressing the kernel. I tested by comparing 10 runs of each option in Qemu and on hardware. The kernel is compressed with KERNEL_XZ built with GCC 8.2.0-7ubuntu1. The values are counts of the timebase. Qemu TCG powernv Power8: Os O2 O3 median 10221123889 6201518438 6568186825 stddev 1361267211 429090641 657930076 improvement 39.33% 35.74% Palmetto Power8: Os O2 O3 median 50279 50599 35790 stddev 992144533 627130655 623721078 improvement 36.79% 37.13% Romulus Power9: Os O2 O3 median 670312391 454733720 448881398 stddev 157569 107276 108760 improvement 32.16% 33.03% TCG was quite noisy, with every few runs producing an outlier. Even so, O2 is faster than O3. On hardware the numbers were less noisy and O3 is slightly faster than O2. The wrapper size increases when moving from Os. Comparing zImage.epapr to the existing Os build using bloat-o-meter: Before=43401, After=56837 (13KB), chg +30.96% Before=43401, After=64305 (20KB), chg +48.16% I chose O2 for a balance between Qemu and hardware speed up. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-10-13powerpc/boot: Disable vector instructionsJoel Stanley1-2/+2
This will avoid auto-vectorisation when building with higher optimisation levels. We don't know if the machine can support VSX and even if it's present it's probably not going to be enabled at this point in boot. These flag were both added prior to GCC 4.6 which is the minimum compiler version supported by upstream, thanks to Segher for the details. Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>