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2019-03-27arm64: dts: renesas: salvator-common: Add GPIO keys supportLaurent Pinchart1-0/+63
The Salvator-X and XS boards have a 4 lines DIP switch and 3 push buttons connected to SoC GPIOs, meant to be used as general-purpose test keys. Add a corresponding node in DT, mapping (semi-randomly) the DIP switch to keys 1-4 and the push buttons to keys A-C. Signed-off-by: Laurent Pinchart <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-27arm64: dts: renesas: use extended audio dmac registerJiada Wang3-3/+3
Basic audio dmac register only supports busif from 0 to 3, in order to use busif4 ~ busif7, extended audio dmac register need to be used. This patch updates H3 (= r8a7795), M3-W (= r8a7796) and M3-N (=r8a77965) to use extended audio dmac register set. Signed-off-by: Jiada Wang <[email protected]> Acked-by: Kuninori Morimoto <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-27arm64: dts: renesas: r8a77995: draak: Fix EthernetAVB phy mode to rgmiiKazuya Mizuguchi1-1/+0
According to the R-Car Gen3 Hardware Manual Errata for Rev 1.00 of August 24, 2018, the TX clock internal Delay mode does'nt support on R-Car D3. This patch fixes EthernetAVB phy mode to rgmii. This is achieved by simply dropping the phy-mode property from r8a77995-draak.dts as the default property for this for r8a77995, as set in r8a77995.dtsi, is "rgmii". Signed-off-by: Kazuya Mizuguchi <[email protected]> Signed-off-by: Takeshi Kihara <[email protected]> Signed-off-by: Simon Horman <[email protected]> Tested-by: Ulrich Hecht <[email protected]>
2019-03-27arm64: dts: renesas: salvator-common: Sort node labelTakeshi Kihara1-5/+5
This patch sorts the node label to improve maintainability. The sort has been done alphabetically with the node label name as the key. This patch does not include functional changes. Signed-off-by: Takeshi Kihara <[email protected]> Signed-off-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-27arm64: dts: renesas: Update Ebisu and Draak bootargsMagnus Damm2-2/+2
Update Ebisu and Draak bootargs to match other boards Signed-off-by: Magnus Damm <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-19arm64: dts: renesas: r8a774c0: Add clkp2 clock to CAN nodesFabrizio Castro1-4/+8
According to the latest information, clkp2 is available on RZ/G2. Modify CAN0 and CAN1 nodes accordingly. Signed-off-by: Fabrizio Castro <[email protected]> Reviewed-by: Chris Paterson <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-19arm64: dts: renesas: r8a774c0: Add CANFD supportFabrizio Castro1-0/+25
The CANFD implementation on the RZ/G2E (a.k.a. r8a774c0) is identical to the one found on the r8a77990. Signed-off-by: Fabrizio Castro <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-19arm64: dts: renesas: r8a774a1: Add clkp2 clock to CAN nodesFabrizio Castro1-4/+8
According to the latest information, clkp2 is available on RZ/G2. Modify CAN0 and CAN1 nodes accordingly. Signed-off-by: Fabrizio Castro <[email protected]> Reviewed-by: Chris Paterson <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: ebisu: Add PMIC DDR0 Backup Power configSimon Horman1-0/+2
On Ebisu the DDR0 power rail needs to be kept powered when backup mode is enabled. Reflect this in the "rohm,ddr-backup-power" property for the BD9571MWV PMIC node. The accessory power switch (SW23) is a toggle switch, hence specify "rohm,rstbmode-level". Based on advice from Geert Uytterhoeven. Signed-off-by: Simon Horman <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Tested-by: Geert Uytterhoeven <[email protected]>
2019-03-18arm64: dts: renesas: r8a77990-ebisu: Add BD9571 PMICTakeshi Kihara1-0/+25
This patch adds the regulator definition required for operation of S2RAM. Signed-off-by: Takeshi Kihara <[email protected]> Signed-off-by: Yoshihiro Kaneko <[email protected]> Signed-off-by: Simon Horman <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Tested-by: Geert Uytterhoeven <[email protected]>
2019-03-18arm64: dts: renesas: r8a77990: Remove invalid compatible value for CSI40Niklas Söderlund1-1/+1
The compatible value renesas,rcar-gen3-csi2 was used while prototyping the R-Car CSI-2 driver but was removed before the driver was merged. Remove the only occurrence of the compatible value which manage to make it upstream. Fixes: ec70407ae7d7 ("arm64: dts: renesas: r8a77990: Add VIN and CSI-2 device nodes") Signed-off-by: Niklas Söderlund <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a774c0: Remove invalid compatible value for CSI40Niklas Söderlund1-2/+1
The compatible value renesas,rcar-gen3-csi2 was used while prototyping the R-Car CSI-2 driver but was removed before the driver was merged. Fixes: e961ab42e034d469 ("arm64: dts: renesas: r8a774c0: Add VIN and CSI-2 device nodes") Signed-off-by: Niklas Söderlund <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a77995: draak: Enable CAN0, CAN1Marek Vasut1-0/+22
Enable both CAN0 and CAN1 controllers on R8A77995 Draak board, since they are available on connectors CN43, CN44 respectively. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a774c0-cat874: Add RWDT supportFabrizio Castro1-0/+5
Enable RWDT and use 60 seconds as default timeout. Signed-off-by: Fabrizio Castro <[email protected]> Reviewed-by: Chris Paterson <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: ebisu: Enable VIN5Takeshi Kihara1-0/+4
Both VIN4 and VIN5 are connected to CSI40 and can be configured at runtime to use the single video source connected to CSI40. Enable VIN5 to allow it to be used in this fashion. Signed-off-by: Takeshi Kihara <[email protected]> [Niklas: rewrite commit message] Signed-off-by: Niklas Söderlund <[email protected]> Reviewed-by: Kieran Bingham <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a774c0-cat874: Add LEDs supportFabrizio Castro1-0/+24
This patch adds LEDs support to the CAT874 board specific device tree. Signed-off-by: Fabrizio Castro <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a774c0-cat874: add RTC supportBiju Das1-0/+18
This patch adds Epson RX-8571 real time clock support. Signed-off-by: Biju Das <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: cat875: Add CAN supportFabrizio Castro1-0/+22
Add CAN support to the CAT875 sub board. Signed-off-by: Fabrizio Castro <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a774c0: Fix cpu nodes styleFabrizio Castro1-2/+2
We usually leave a space between "=" and the value of device tree properties, but unfortunately that was overlooked for the "clocks" property of cpu@0 and cpu@1. This patch fixes the spacing with the "clocks" property of cpu@0 and cpu@1. Signed-off-by: Fabrizio Castro <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a77965: add SSIU support for soundJiada Wang1-20/+231
rsnd driver supports SSIU now, let's use it. Then, BUSIF DMA settings on rcar_sound,ssi (= rxu, txu) are no longer needed. Applies commit 8d14bfa074db ("arm64: dts: renesas: r8a7796: add SSIU support for sound") and commit 10bd03fa896e ("arm64: dts: renesas: r8a7796: remove BUSIF0 settings from rcar_sound,ssi") for r8a77965. Signed-off-by: Jiada Wang <[email protected]> Signed-off-by: Timo Wischer <[email protected]> Acked-by: Kuninori Morimoto <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: ebisu: Fix adv7482 hexadecimal register addressTakeshi Kihara1-1/+1
The register address used for the reg property of the adv7482 node in other Renesas device trees are decimal not hex, change this for Ebisu to align it with the others. Signed-off-by: Takeshi Kihara <[email protected]> [Niklas: rewrite commit message] Signed-off-by: Niklas Söderlund <[email protected]> Acked-by: Kieran Bingham <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a77995: draak: Enable LVDS1 encoderLaurent Pinchart1-0/+7
The LVDS1 encoder must supply a pixel clock to the DU for the DPAD output when the LVDS0 encoder is used. Enable it despite its output not being connected. Signed-off-by: Laurent Pinchart <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a77990: ebisu: Enable LVDS1 encoderLaurent Pinchart1-0/+7
The LVDS1 encoder must supply a pixel clock to the DU for the DPAD output when the LVDS0 encoder is used. Enable it despite its output not being connected. Signed-off-by: Laurent Pinchart <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a7796: remove unneeded sound #address/size-cellsJiada Wang3-11/+2
commit 78bc93b3ffb2 ("arm64: dts: renesas: r8a7796: Add address properties to rcar_sound port nodes") added missing #address-cells and #size-cells for sound ports. But, these are based on platform, not on SoC. This patch cleanups it. Signed-off-by: Jiada Wang <[email protected]> Signed-off-by: Timo Wischer <[email protected]> Acked-by: Kuninori Morimoto <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a77990: Fix SPDX license identifier styleGeert Uytterhoeven2-2/+2
According to Documentation/process/license-rules.rst, SPDX license identifiers in DTS files should use C++ style comments. Fixes: f37a7767f6c4ec66 ("arm64: dts: renesas: Add Renesas R8A77990 SoC support") Fixes: 77049191b24b4586 ("arm64: dts: renesas: Add Renesas Ebisu board support") Signed-off-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-18arm64: dts: renesas: r8a77990: ebisu: Add GPIO expanderGeert Uytterhoeven1-0/+9
Describe the ON Semiconductor PCA9654 I/O expander on the first I2C bus, which provides 8 extra GPIOs. Signed-off-by: Geert Uytterhoeven <[email protected]> Reviewed-by: Niklas Söderlund <[email protected]> Signed-off-by: Simon Horman <[email protected]>
2019-03-17Linux 5.1-rc1Linus Torvalds1-2/+2
2019-03-17Merge tag 'kbuild-v5.1-2' of ↵Linus Torvalds57-156/+153
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - add more Build-Depends to Debian source package - prefix header search paths with $(srctree)/ - make modpost show verbose section mismatch warnings - avoid hard-coded CROSS_COMPILE for h8300 - fix regression for Debian make-kpkg command - add semantic patch to detect missing put_device() - fix some warnings of 'make deb-pkg' - optimize NOSTDINC_FLAGS evaluation - add warnings about redundant generic-y - clean up Makefiles and scripts * tag 'kbuild-v5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kconfig: remove stale lxdialog/.gitignore kbuild: force all architectures except um to include mandatory-y kbuild: warn redundant generic-y Revert "modsign: Abort modules_install when signing fails" kbuild: Make NOSTDINC_FLAGS a simply expanded variable kbuild: deb-pkg: avoid implicit effects coccinelle: semantic code search for missing put_device() kbuild: pkg: grep include/config/auto.conf instead of $KCONFIG_CONFIG kbuild: deb-pkg: introduce is_enabled and if_enabled_echo to builddeb kbuild: deb-pkg: add CONFIG_ prefix to kernel config options kbuild: add workaround for Debian make-kpkg kbuild: source include/config/auto.conf instead of ${KCONFIG_CONFIG} unicore32: simplify linker script generation for decompressor h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux- kbuild: move archive command to scripts/Makefile.lib modpost: always show verbose warning for section mismatch ia64: prefix header search path with $(srctree)/ libfdt: prefix header search paths with $(srctree)/ deb-pkg: generate correct build dependencies
2019-03-17Merge branch 'x86-asm-for-linus' of ↵Linus Torvalds3-125/+0
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 asm updates from Thomas Gleixner: "Two cleanup patches removing dead conditionals and unused code" * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm: Remove unused __constant_c_x_memset() macro and inlines x86/asm: Remove dead __GNUC__ conditionals
2019-03-17Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2-4/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Thomas Gleixner: "Three fixes for the fallout from the TSX errata workaround: - Prevent memory corruption caused by a unchecked out of bound array index. - Two trivial fixes to address compiler warnings" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel: Make dev_attr_allow_tsx_force_abort static perf/x86: Fixup typo in stub functions perf/x86/intel: Fix memory corruption
2019-03-17Merge tag 'for-linus-5.1b-rc1b-tag' of ↵Linus Torvalds1-1/+4
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen fix from Juergen Gross: "A fix for a Xen bug introduced by David's series for excluding ballooned pages in vmcores" * tag 'for-linus-5.1b-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/balloon: Fix mapping PG_offline pages to user space
2019-03-17Merge tag '9p-for-5.1' of git://github.com/martinetd/linuxLinus Torvalds7-32/+55
Pull 9p updates from Dominique Martinet: "Here is a 9p update for 5.1; there honestly hasn't been much. Two fixes (leak on invalid mount argument and possible deadlock on i_size update on 32bit smp) and a fall-through warning cleanup" * tag '9p-for-5.1' of git://github.com/martinetd/linux: 9p/net: fix memory leak in p9_client_create 9p: use inode->i_lock to protect i_size_write() under 32-bit 9p: mark expected switch fall-through
2019-03-17perf/x86/intel: Make dev_attr_allow_tsx_force_abort statickbuild test robot1-1/+1
Fixes: 400816f60c54 ("perf/x86/intel: Implement support for TSX Force Abort") Signed-off-by: kbuild test robot <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Cc: "Peter Zijlstra (Intel)" <[email protected]> Cc: [email protected] Cc: Borislav Petkov <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Kan Liang <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Andi Kleen <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/20190313184243.GA10820@lkp-sb-ep06
2019-03-17kconfig: remove stale lxdialog/.gitignoreMasahiro Yamada1-4/+0
When this .gitignore was added, lxdialog was an independent hostprogs-y. Now that all objects in lxdialog/ are directly linked to mconf, the lxdialog is no longer generated. Signed-off-by: Masahiro Yamada <[email protected]>
2019-03-17kbuild: force all architectures except um to include mandatory-yMasahiro Yamada29-47/+18
Currently, every arch/*/include/uapi/asm/Kbuild explicitly includes the common Kbuild.asm file. Factor out the duplicated include directives to scripts/Makefile.asm-generic so that no architecture would opt out of the mandatory-y mechanism. um is not forced to include mandatory-y since it is a very exceptional case which does not support UAPI. Signed-off-by: Masahiro Yamada <[email protected]>
2019-03-17kbuild: warn redundant generic-yMasahiro Yamada12-13/+6
The generic-y is redundant under the following condition: - arch has its own implementation - the same header is added to generated-y - the same header is added to mandatory-y If a redundant generic-y is found, the warning like follows is displayed: scripts/Makefile.asm-generic:20: redundant generic-y found in arch/arm/include/asm/Kbuild: timex.h I fixed up arch Kbuild files found by this. Suggested-by: Sam Ravnborg <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]>
2019-03-17Revert "modsign: Abort modules_install when signing fails"Douglas Anderson1-1/+1
This reverts commit caf6fe91ddf62a96401e21e9b7a07227440f4185. The commit was fine but is no longer needed as of commit 3a2429e1faf4 ("kbuild: change if_changed_rule for multi-line recipe"). Let's go back to using ";" to be consistent. For some discussion, see: https://lkml.kernel.org/r/CAK7LNASde0Q9S5GKeQiWhArfER4S4wL1=R_FW8q0++_X3T5=hQ@mail.gmail.com Signed-off-by: Douglas Anderson <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]>
2019-03-17kbuild: Make NOSTDINC_FLAGS a simply expanded variableDouglas Anderson1-1/+1
During a simple no-op (nothing changed) build I saw 39 invocations of the C compiler with the argument "-print-file-name=include". We don't need to call the C compiler 39 times for this--one time will suffice. Let's change NOSTDINC_FLAGS to a simply expanded variable to avoid this since there doesn't appear to be any reason it should be recursively expanded. On my build this shaved ~400 ms off my "no-op" build. Note that the recursive expansion seems to date back to the (really old) commit e8f5bdb02ce0 ("[PATCH] Makefile include path ordering"). It's a little unclear to me if the point of that patch was to switch the variable to be recursively expanded (which it did) or to avoid directly assigning to NOSTDINC_FLAGS (AKA to switch to +=) because someone else (out of tree?) was setting it. I presume later since if the only goal was to switch to recursive expansion the patch would have just removed the ":". Signed-off-by: Douglas Anderson <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]>
2019-03-17kbuild: deb-pkg: avoid implicit effectsArseny Maslennikov1-1/+4
* The man page for dpkg-source(1) notes: > -b, --build directory [format-specific-parameters] > Build a source package (--build since dpkg 1.17.14). > <...> > > dpkg-source will build the source package with the first > format found in this ordered list: the format indicated > with the --format command line option, the format > indicated in debian/source/format, “1.0”. The fallback > to “1.0” is deprecated and will be removed at some point > in the future, you should always document the desired > source format in debian/source/format. See section > SOURCE PACKAGE FORMATS for an extensive description of > the various source package formats. Thus it would be more foolproof to explicitly use 1.0 (as we always did) than to rely on dpkg-source's defaults. * In a similar vein, debian/rules is not made executable by mkdebian, and dpkg-source warns about that but still silently fixes the file. Let's be explicit once again. Signed-off-by: Arseny Maslennikov <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]>
2019-03-17coccinelle: semantic code search for missing put_device()Wen Yang1-0/+56
The of_find_device_by_node() takes a reference to the underlying device structure, we should release that reference. The implementation of this semantic code search is: In a function, for a local variable returned by calling of_find_device_by_node(), a, if it is released by a function such as put_device()/of_dev_put()/platform_device_put() after the last use, it is considered that there is no reference leak; b, if it is passed back to the caller via dev_get_drvdata()/platform_get_drvdata()/get_device(), etc., the reference will be released in other functions, and the current function also considers that there is no reference leak; c, for the rest of the situation, the current function should release the reference by calling put_device, this code search will report the corresponding error message. By using this semantic code search, we have found some object reference leaks, such as: commit 11907e9d3533 ("ASoC: fsl-asoc-card: fix object reference leaks in fsl_asoc_card_probe") commit a12085d13997 ("mtd: rawnand: atmel: fix possible object reference leak") commit 11493f26856a ("mtd: rawnand: jz4780: fix possible object reference leak") There are still dozens of reference leaks in the current kernel code. Further, for the case of b, the object returned to other functions may also have a reference leak, we will continue to develop other cocci scripts to further check the reference leak. Signed-off-by: Wen Yang <[email protected]> Reviewed-by: Julia Lawall <[email protected]> Reviewed-by: Markus Elfring <[email protected]> Signed-off-by: Masahiro Yamada <[email protected]>
2019-03-16Merge tag 'pidfd-v5.1-rc1' of ↵Linus Torvalds11-6/+538
git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull pidfd system call from Christian Brauner: "This introduces the ability to use file descriptors from /proc/<pid>/ as stable handles on struct pid. Even if a pid is recycled the handle will not change. For a start these fds can be used to send signals to the processes they refer to. With the ability to use /proc/<pid> fds as stable handles on struct pid we can fix a long-standing issue where after a process has exited its pid can be reused by another process. If a caller sends a signal to a reused pid it will end up signaling the wrong process. With this patchset we enable a variety of use cases. One obvious example is that we can now safely delegate an important part of process management - sending signals - to processes other than the parent of a given process by sending file descriptors around via scm rights and not fearing that the given process will have been recycled in the meantime. It also allows for easy testing whether a given process is still alive or not by sending signal 0 to a pidfd which is quite handy. There has been some interest in this feature e.g. from systems management (systemd, glibc) and container managers. I have requested and gotten comments from glibc to make sure that this syscall is suitable for their needs as well. In the future I expect it to take on most other pid-based signal syscalls. But such features are left for the future once they are needed. This has been sitting in linux-next for quite a while and has not caused any issues. It comes with selftests which verify basic functionality and also test that a recycled pid cannot be signaled via a pidfd. Jon has written about a prior version of this patchset. It should cover the basic functionality since not a lot has changed since then: https://lwn.net/Articles/773459/ The commit message for the syscall itself is extensively documenting the syscall, including it's functionality and extensibility" * tag 'pidfd-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: selftests: add tests for pidfd_send_signal() signal: add pidfd_send_signal() syscall
2019-03-16Merge tag 'devdax-for-5.1' of ↵Linus Torvalds30-537/+1111
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull device-dax updates from Dan Williams: "New device-dax infrastructure to allow persistent memory and other "reserved" / performance differentiated memories, to be assigned to the core-mm as "System RAM". Some users want to use persistent memory as additional volatile memory. They are willing to cope with potential performance differences, for example between DRAM and 3D Xpoint, and want to use typical Linux memory management apis rather than a userspace memory allocator layered over an mmap() of a dax file. The administration model is to decide how much Persistent Memory (pmem) to use as System RAM, create a device-dax-mode namespace of that size, and then assign it to the core-mm. The rationale for device-dax is that it is a generic memory-mapping driver that can be layered over any "special purpose" memory, not just pmem. On subsequent boots udev rules can be used to restore the memory assignment. One implication of using pmem as RAM is that mlock() no longer keeps data off persistent media. For this reason it is recommended to enable NVDIMM Security (previously merged for 5.0) to encrypt pmem contents at rest. We considered making this recommendation an actively enforced requirement, but in the end decided to leave it as a distribution / administrator policy to allow for emulation and test environments that lack security capable NVDIMMs. Summary: - Replace the /sys/class/dax device model with /sys/bus/dax, and include a compat driver so distributions can opt-in to the new ABI. - Allow for an alternative driver for the device-dax address-range - Introduce the 'kmem' driver to hotplug / assign a device-dax address-range to the core-mm. - Arrange for the device-dax target-node to be onlined so that the newly added memory range can be uniquely referenced by numa apis" NOTE! I'm not entirely happy with the whole "PMEM as RAM" model because we currently have special - and very annoying rules in the kernel about accessing PMEM only with the "MC safe" accessors, because machine checks inside the regular repeat string copy functions can be fatal in some (not described) circumstances. And apparently the PMEM modules can cause that a lot more than regular RAM. The argument is that this happens because PMEM doesn't necessarily get scrubbed at boot like RAM does, but that is planned to be added for the user space tooling. Quoting Dan from another email: "The exposure can be reduced in the volatile-RAM case by scanning for and clearing errors before it is onlined as RAM. The userspace tooling for that can be in place before v5.1-final. There's also runtime notifications of errors via acpi_nfit_uc_error_notify() from background scrubbers on the DIMM devices. With that mechanism the kernel could proactively clear newly discovered poison in the volatile case, but that would be additional development more suitable for v5.2. I understand the concern, and the need to highlight this issue by tapping the brakes on feature development, but I don't see PMEM as RAM making the situation worse when the exposure is also there via DAX in the PMEM case. Volatile-RAM is arguably a safer use case since it's possible to repair pages where the persistent case needs active application coordination" * tag 'devdax-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: device-dax: "Hotplug" persistent memory for use like normal RAM mm/resource: Let walk_system_ram_range() search child resources mm/memory-hotplug: Allow memory resources to be children mm/resource: Move HMM pr_debug() deeper into resource code mm/resource: Return real error codes from walk failures device-dax: Add a 'modalias' attribute to DAX 'bus' devices device-dax: Add a 'target_node' attribute device-dax: Auto-bind device after successful new_id acpi/nfit, device-dax: Identify differentiated memory with a unique numa-node device-dax: Add /sys/class/dax backwards compatibility device-dax: Add support for a dax override driver device-dax: Move resource pinning+mapping into the common driver device-dax: Introduce bus + driver model device-dax: Start defining a dax bus model device-dax: Remove multi-resource infrastructure device-dax: Kill dax_region base device-dax: Kill dax_region ida
2019-03-16Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds22-80/+210
Pull more SCSI updates from James Bottomley: "This is the final round of mostly small fixes and performance improvements to our initial submit. The main regression fix is the ia64 simscsi build failure which was missed in the serial number elimination conversion" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits) scsi: ia64: simscsi: use request tag instead of serial_number scsi: aacraid: Fix performance issue on logical drives scsi: lpfc: Fix error codes in lpfc_sli4_pci_mem_setup() scsi: libiscsi: Hold back_lock when calling iscsi_complete_task scsi: hisi_sas: Change SERDES_CFG init value to increase reliability of HiLink scsi: hisi_sas: Send HARD RESET to clear the previous affiliation of STP target port scsi: hisi_sas: Set PHY linkrate when disconnected scsi: hisi_sas: print PHY RX errors count for later revision of v3 hw scsi: hisi_sas: Fix a timeout race of driver internal and SMP IO scsi: hisi_sas: Change return variable type in phy_up_v3_hw() scsi: qla2xxx: check for kstrtol() failure scsi: lpfc: fix 32-bit format string warning scsi: lpfc: fix unused variable warning scsi: target: tcmu: Switch to bitmap_zalloc() scsi: libiscsi: fall back to sendmsg for slab pages scsi: qla2xxx: avoid printf format warning scsi: lpfc: resolve static checker warning in lpfc_sli4_hba_unset scsi: lpfc: Correct __lpfc_sli_issue_iocb_s4 lockdep check scsi: ufs: hisi: fix ufs_hba_variant_ops passing scsi: qla2xxx: Fix panic in qla_dfs_tgt_counters_show ...
2019-03-16Merge tag 'for-5.1/block-post-20190315' of git://git.kernel.dk/linux-blockLinus Torvalds20-128/+259
Pull more block layer changes from Jens Axboe: "This is a collection of both stragglers, and fixes that came in after I finalized the initial pull. This contains: - An MD pull request from Song, with a few minor fixes - Set of NVMe patches via Christoph - Pull request from Konrad, with a few fixes for xen/blkback - pblk fix IO calculation fix (Javier) - Segment calculation fix for pass-through (Ming) - Fallthrough annotation for blkcg (Mathieu)" * tag 'for-5.1/block-post-20190315' of git://git.kernel.dk/linux-block: (25 commits) blkcg: annotate implicit fall through nvme-tcp: support C2HData with SUCCESS flag nvmet: ignore EOPNOTSUPP for discard nvme: add proper write zeroes setup for the multipath device nvme: add proper discard setup for the multipath device nvme: remove nvme_ns_config_oncs nvme: disable Write Zeroes for qemu controllers nvmet-fc: bring Disconnect into compliance with FC-NVME spec nvmet-fc: fix issues with targetport assoc_list list walking nvme-fc: reject reconnect if io queue count is reduced to zero nvme-fc: fix numa_node when dev is null nvme-fc: use nr_phys_segments to determine existence of sgl nvme-loop: init nvmet_ctrl fatal_err_work when allocate nvme: update comment to make the code easier to read nvme: put ns_head ref if namespace fails allocation nvme-trace: fix cdw10 buffer overrun nvme: don't warn on block content change effects nvme: add get-feature to admin cmds tracer md: Fix failed allocation of md_register_thread It's wrong to add len to sector_nr in raid10 reshape twice ...
2019-03-16Merge tag 'nfs-for-5.1-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds5-23/+21
Pull NFS client bugfixes from Trond Myklebust: "Highlights include: Bugfixes: - Fix an Oops in SUNRPC back channel tracepoints - Fix a SUNRPC client regression when handling oversized replies - Fix the minimal size for SUNRPC reply buffer allocation - rpc_decode_header() must always return a non-zero value on error - Fix a typo in pnfs_update_layout() Cleanup: - Remove redundant check for the reply length in call_decode()" * tag 'nfs-for-5.1-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: SUNRPC: Remove redundant check for the reply length in call_decode() SUNRPC: Handle the SYSTEM_ERR rpc error SUNRPC: rpc_decode_header() must always return a non-zero value on error SUNRPC: Use the ENOTCONN error on socket disconnect SUNRPC: Fix the minimal size for reply buffer allocation SUNRPC: Fix a client regression when handling oversized replies pNFS: Fix a typo in pnfs_update_layout fix null pointer deref in tracepoints in back channel
2019-03-16Merge tag 'powerpc-5.1-2' of ↵Linus Torvalds6-10/+22
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: "One fix to prevent runtime allocation of 16GB pages when running in a VM (as opposed to bare metal), because it doesn't work. A small fix to our recently added KCOV support to exempt some more code from being instrumented. Plus a few minor build fixes, a small dead code removal and a defconfig update. Thanks to: Alexey Kardashevskiy, Aneesh Kumar K.V, Christophe Leroy, Jason Yan, Joel Stanley, Mahesh Salgaonkar, Mathieu Malaterre" * tag 'powerpc-5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/64s: Include <asm/nmi.h> header file to fix a warning powerpc/powernv: Fix compile without CONFIG_TRACEPOINTS powerpc/mm: Disable kcov for SLB routines powerpc: remove dead code in head_fsl_booke.S powerpc/configs: Sync skiroot defconfig powerpc/hugetlb: Don't do runtime allocation of 16G pages in LPAR configuration
2019-03-16Merge branch 'work.mount' of ↵Linus Torvalds1-3/+5
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs mount infrastructure fix from Al Viro: "Fixup for sysfs braino. Capabilities checks for sysfs mount do include those on netns, but only if CONFIG_NET_NS is enabled. Sorry, should've caught that earlier..." * 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fix sysfs_init_fs_context() in !CONFIG_NET_NS case
2019-03-16fix sysfs_init_fs_context() in !CONFIG_NET_NS caseAl Viro1-3/+5
Permission checks on current's netns should be done only when netns are enabled. Reported-by: Dominik Brodowski <[email protected]> Fixes: 23bf1b6be9c2 Signed-off-by: Al Viro <[email protected]>
2019-03-15Merge tag '5.1-rc-smb3' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds17-362/+981
Pull more smb3 updates from Steve French: "Various tracing and debugging improvements, crediting fixes, some cleanup, and important fallocate fix (fixes three xfstests) and lock fix. Summary: - Various additional dynamic tracing tracepoints - Debugging improvements (including ability to query the server via SMB3 fsctl from userspace tools which can help with stats and debugging) - One minor performance improvement (root directory inode caching) - Crediting (SMB3 flow control) fixes - Some cleanup (docs and to mknod) - Important fixes: one to smb3 implementation of fallocate zero range (which fixes three xfstests) and a POSIX lock fix" * tag '5.1-rc-smb3' of git://git.samba.org/sfrench/cifs-2.6: (22 commits) CIFS: fix POSIX lock leak and invalid ptr deref SMB3: Allow SMB3 FSCTL queries to be sent to server from tools cifs: fix incorrect handling of smb2_set_sparse() return in smb3_simple_falloc smb2: fix typo in definition of a few error flags CIFS: make mknod() an smb_version_op cifs: minor documentation updates cifs: remove unused value pointed out by Coverity SMB3: passthru query info doesn't check for SMB3 FSCTL passthru smb3: add dynamic tracepoints for simple fallocate and zero range cifs: fix smb3_zero_range so it can expand the file-size when required cifs: add SMB2_ioctl_init/free helpers to be used with compounding smb3: Add dynamic trace points for various compounded smb3 ops cifs: cache FILE_ALL_INFO for the shared root handle smb3: display volume serial number for shares in /proc/fs/cifs/DebugData cifs: simplify how we handle credits in compound_send_recv() smb3: add dynamic tracepoint for timeout waiting for credits smb3: display security information in /proc/fs/cifs/DebugData more accurately cifs: add a timeout argument to wait_for_free_credits cifs: prevent starvation in wait_for_free_credits for multi-credit requests cifs: wait_for_free_credits() make it possible to wait for >=1 credits ...
2019-03-15Merge branch 'for-linus-5.1-rc1' of ↵Linus Torvalds2-6/+3
git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML updates from Richard Weinberger: "Bugfix for the UML block device driver" * 'for-linus-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: Fix for a possible OOPS in ubd initialization um: Remove duplicated include from vector_user.c