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2021-04-14dt-bindings: mfd: lp875xx: Add optional reset GPIOLuca Ceresoli3-0/+12
Document the LP8756x-Q1 and LP87524-Q1 ICs reset pin. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-04-14dt-bindings: mfd: ricoh,rn5t618: Trivial: Fix spelling mistake of 'additionally'Lee Jones1-1/+1
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-04-14dt-bindings: mfd: Convert rn5t618 to json-schemaAndreas Kemnade2-52/+111
Convert the RN5T618 binding to DT schema format. Also clearly state which regulators are available. Signed-off-by: Andreas Kemnade <andreas@kemnade.info> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-04-14Merge tag 'ib-mfd-watchdog-v5.13' into ibs-for-mfd-mergedLee Jones1-0/+123
Immutable branch between MFD and Watchdog due for the v5.13 merge window
2021-04-14Merge tags 'ib-mfd-clk-gpio-regulator-rtc-v5.13', 'ib-mfd-extcon-v5.13', 'ib-mfd-input-v5.13-1', 'ib-mfd-platform-x86-v5.13', 'ib-mfd-power-v5.13', 'ib-mfd-pwm-rtc-v5.13-1' and 'ib-regulator-list-ramp-helpers-v5.13' into ibs-for-mfd-mergedLee Jones13-82/+311
Immutable branch between MFD, Clock, GPIO, Regulator and RTC due for the v5.13 merge window Immutable branch between MFD and Extcon due for the v5.13 merge window Immutable branch between MFD and Input due for the v5.13 merge window Immutable branch between MFD and Platform/x86 due for the v5.13 merge window Immutable branch between MFD and Power due for the v5.13 merge window Immutable branch between MFD, PWM and RTC due for the v5.13 merge window
2021-04-14dt-bindings: remoteproc: stm32-rproc: add new mailbox channel for detachArnaud Pouliquen1-2/+9
Add the "detach" mailbox item, that allows to define a mailbox to send a IPCC signal to the remote processor on remoteproc detach action. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210331073347.8293-2-arnaud.pouliquen@foss.st.com Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-04-14dt-bindings: usb: mtk-xhci: add wakeup interruptChunfeng Yun1-1/+12
Add an interrupt which is EINT usually to support runtime PM, meanwhile add "interrupt-names" property, for backward compatibility, it's optional and used when wakeup interrupt exists Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1618031406-15347-2-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-14doc: trusted-encrypted: updates with TEE as a new trust sourceSumit Garg1-33/+138
Update documentation for Trusted and Encrypted Keys with TEE as a new trust source. Following is brief description of updates: - Add a section to demonstrate a list of supported devices along with their security properties/guarantees. - Add a key generation section. - Updates for usage section including differences specific to a trust source. Co-developed-by: Elaine Palmer <erpalmer@us.ibm.com> Signed-off-by: Elaine Palmer <erpalmer@us.ibm.com> Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2021-04-14KEYS: trusted: Add generic trusted keys frameworkSumit Garg1-0/+12
Current trusted keys framework is tightly coupled to use TPM device as an underlying implementation which makes it difficult for implementations like Trusted Execution Environment (TEE) etc. to provide trusted keys support in case platform doesn't posses a TPM device. Add a generic trusted keys framework where underlying implementations can be easily plugged in. Create struct trusted_key_ops to achieve this, which contains necessary functions of a backend. Also, define a module parameter in order to select a particular trust source in case a platform support multiple trust sources. In case its not specified then implementation itetrates through trust sources list starting with TPM and assign the first trust source as a backend which has initiazed successfully during iteration. Note that current implementation only supports a single trust source at runtime which is either selectable at compile time or during boot via aforementioned module parameter. Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2021-04-14security: keys: trusted: use ASN.1 TPM2 key format for the blobsJames Bottomley1-0/+58
Modify the TPM2 key format blob output to export and import in the ASN.1 form for TPM2 sealed object keys. For compatibility with prior trusted keys, the importer will also accept two TPM2B quantities representing the public and private parts of the key. However, the export via keyctl pipe will only output the ASN.1 format. The benefit of the ASN.1 format is that it's a standard and thus the exported key can be used by userspace tools (openssl_tpm2_engine, openconnect and tpm2-tss-engine). The format includes policy specifications, thus it gets us out of having to construct policy handles in userspace and the format includes the parent meaning you don't have to keep passing it in each time. This patch only implements basic handling for the ASN.1 format, so keys with passwords but no policy. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Tested-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2021-04-14powerpc/papr_scm: Implement support for H_SCM_FLUSH hcallShivaprasad G Bhat1-0/+14
Add support for ND_REGION_ASYNC capability if the device tree indicates 'ibm,hcall-flush-required' property in the NVDIMM node. Flush is done by issuing H_SCM_FLUSH hcall to the hypervisor. If the flush request failed, the hypervisor is expected to to reflect the problem in the subsequent nvdimm H_SCM_HEALTH call. This patch prevents mmap of namespaces with MAP_SYNC flag if the nvdimm requires an explicit flush[1]. References: [1] https://github.com/avocado-framework-tests/avocado-misc-tests/blob/master/memory/ndctl.py.data/map_sync.c Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> [mpe: Use unsigned long / long instead of uint64_t/int64_t] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/161703936121.36.7260632399582101498.stgit@e1fbed493c87
2021-04-14dt-bindings: pinctrl: rockchip: add RK3568 SoC supportEzequiel Garcia1-0/+1
Add RK3568/RK3566 SoC support to pinctrl. Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210410204500.18091-1-ezequiel@collabora.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-04-14dt_bindings: mfd: Add ROHM BD71815 PMICMatti Vaittinen1-0/+201
Document DT bindings for ROHM BD71815. BD71815 is a single-chip power management IC mainly for battery-powered portable devices. The IC integrates 5 bucks, 7 LDOs, a boost driver for LED, a battery charger with a Coulomb counter, a real-time clock, a 32kHz clock and two general-purpose outputs although only one is documented by the data-sheet. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-04-14dt_bindings: regulator: Add ROHM BD71815 PMIC regulatorsMatti Vaittinen1-0/+116
Add binding documentation for regulators on ROHM BD71815 PMIC. 5 bucks, 7 LDOs and a boost for LED. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-04-14dt_bindings: bd71828: Add clock output modeMatti Vaittinen1-0/+6
The BD71828 allows configuring the clk32kout pin mode to CMOS or open-drain. Add device-tree property for specifying the preferred mode. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-04-14drm/aperture: Add infrastructure for aperture ownershipThomas Zimmermann1-0/+12
Platform devices might operate on firmware framebuffers, such as VESA or EFI. Before a native driver for the graphics hardware can take over the device, it has to remove any platform driver that operates on the firmware framebuffer. Aperture helpers provide the infrastructure for native drivers to remove the generic ones. For now, this only concerns generic fbdev drivers. Code for removing these is provided by drm_fb_helper_remove_conflicting_framebuffers() et al. Simply wrap these functions for now. At a later point, code can be added for generic DRM drivers to acquire firmware framebuffers. v2: * fix docs for drm_aperture_remove_framebuffers() Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210412131043.5787-2-tzimmermann@suse.de
2021-04-14kconfig: change "modules" from sub-option to first-level attributeMasahiro Yamada1-10/+4
Now "modules" is the only member of the "option" property. Remove "option", and move "modules" to the top level property. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-04-14kconfig: remove allnoconfig_y optionMasahiro Yamada1-4/+0
Now that the only user, CONFIG_EMBEDDED has stopped using this option, remove it entirely. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-04-14kconfig: change defconfig_list option to environment variableMasahiro Yamada2-5/+8
"defconfig_list" is a weird option that defines a static symbol that declares the list of base config files in case the .config does not exist yet. This is quite different from other normal symbols; we just abused the "string" type and the "default" properties to list out the input files. They must be fixed values since these are searched for and loaded in the parse stage. It is an ugly hack, and should not exist in the first place. Providing this feature as an environment variable is a saner approach. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-04-13dt-bindings: arm: qcom: Add binding for Thundercomm T55 kitManivannan Sadhasivam1-0/+1
Add devicetree binding for Thundercomm T55 Dev kit based on SDX55. Acked-by: Rob Herring <robh@kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20210408170457.91409-13-manivannan.sadhasivam@linaro.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-04-13dt-bindings: arm: qcom: Add binding for Telit FN980 TLB boardManivannan Sadhasivam1-0/+1
Add devicetree binding for Telit FN980 TLB board based on SDX55. Acked-by: Rob Herring <robh@kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20210408170457.91409-11-manivannan.sadhasivam@linaro.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-04-13dt-bindings: remoteproc: qcom: pas: Add binding for SDX55Manivannan Sadhasivam1-0/+4
Add devicetree binding for SDX55 remoteproc. Acked-by: Rob Herring <robh@kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20210408170457.91409-15-manivannan.sadhasivam@linaro.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-04-13dt-bindings: touchscreen: Add HY46XX bindingsGiulio Benetti1-0/+119
This adds device tree bindings for the Hycon HY46XX touchscreen series. Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210413144446.2277817-3-giulio.benetti@benettiengineering.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-04-13dt-bindings: Add Hycon Technology vendor prefixGiulio Benetti1-0/+2
Update Documentation/devicetree/bindings/vendor-prefixes.yaml to include "hycon" as a vendor prefix for "Hycon Technology". Company website: https://www.hycontek.com/ Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210413144446.2277817-2-giulio.benetti@benettiengineering.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2021-04-13dt-bindings: firmware: scm: Add compatible for SDX55Manivannan Sadhasivam1-0/+1
Add devicetree compatible for SCM present in SDX55 platform. Acked-by: Rob Herring <robh@kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20210408170457.91409-7-manivannan.sadhasivam@linaro.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-04-13dt-bindings: mailbox: Add interrupt-names to SPRD mailboxOrson Zhai1-2/+11
We add an optional supp-outbox interrupt support to SPRD mailbox driver with newly added sc9863a support and change to configure interrupts with names in device tree files. Signed-off-by: Orson Zhai <orson.zhai@unisoc.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2021-04-13dt-bindings: mailbox: Add compatible for SM8350 IPCCVinod Koul1-0/+1
Add the compatible string for SM8350 IPCC block on this SoC Signed-off-by: Vinod Koul <vkoul@kernel.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2021-04-13Documentation/ABI/rtrs-clt: Add descriptions for min-latency policyGioh Kim1-0/+12
Describe new multipath policy min-latency of the RTRS client. Link: https://lore.kernel.org/r/20210407113444.150961-5-gi-oh.kim@ionos.com Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com> Signed-off-by: Jack Wang <jinpu.wang@ionos.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-04-13dt-bindings: net: qcom,ipa: add support for SM8350Alex Elder1-5/+6
Add support for "qcom,sm8350-ipa", which uses IPA v4.9. Use "enum" rather than "oneOf/const ..." to specify compatible strings, as suggested by Rob Herring. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-13Merge drm/drm-fixes into drm-nextDaniel Vetter27-52/+162
msm-next pull request has a baseline with stuff from -fixes, roll forward first. Some simple conflicts in amdgpu, ttm and one in i915 where git gets confused and tries to add the same function twice. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2021-04-13docs: reporting-issues: make people CC the regressions listThorsten Leemhuis1-20/+35
Make people CC the recently created mailing list dedicated to Linux kernel regressions when reporting one. Some paragraphs had to be reshuffled and slightly rewritten during the process, as the text otherwise would have gotten unnecessarily hard to follow. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/ac28089d710d5d41f295221bc726555ba32f4984.1617967127.git.linux@leemhuis.info Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13doc:it_IT: align Italian documentationFederico Vaga10-72/+154
Translation for the following patches commit 7dfbea4c468c ("scripts: remove namespace.pl") commit 1a63f9cce7b7 ("docs: Remove make headers_check from checklist") commit 1e013ff7cb54 ("docs: Document cross-referencing using relative path") commit 0be1511f516e ("Documentation: doc-guide: fixes to sphinx.rst") commit 911358401284 ("kernel-doc: Fix example in Nested structs/unions") commit 875f82cb374b ("Documentation/submitting-patches: Extend commit message layout description") commit 78f101a1b258 ("Documentation/submitting-patches: Add blurb about backtraces in commit messages") commit f0ea149eee6b ("docs: submitting-patches: Emphasise the requirement to Cc: stable when using Fixes: tag") commit 05a5f51ca566 ("Documentation: Replace lkml.org links with lore") commit 9bf19b78a203 ("Documentation/submitting-patches: Document the SoB chain") commit b7592e5b82db ("docs: Remove the Microsoft rhetoric") commit 26606ce072d4 ("coding-style.rst: Avoid comma statements") commit dd58e649742a ("docs: Make syscalls' helpers naming consistent") commit 460cd17e9f7d ("net: switch to the kernel.org patchwork instance") commit 163ba35ff371 ("doc: use KCFLAGS instead of EXTRA_CFLAGS to pass flags from command line") commit 0ef597c3ac49 ("docs: remove mention of ENABLE_MUST_CHECK") commit f8408264c77a ("drivers: Remove CONFIG_OPROFILE support") commit 0653c358d2dc ("scsi: Drop gdth driver") commit f8ae7bbec726 ("net: x25_asy: Delete the x25_asy driver") commit cf6d6fc27936 ("docs: process/howto.rst: make sections on bug reporting match practice") commit da514157c4f0 ("docs: make reporting-bugs.rst obsolete") commit 4f8af077a02e ("docs: Fix reST markup when linking to sections") commit 3a4928cf5e3c ("Documentation: kernel-hacking: change 'current()' to 'current'") commit c170f2eb9648 ("docs: Document cross-referencing between documentation pages") Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it> Link: https://lore.kernel.org/r/20210409224104.30471-1-federico.vaga@vaga.pv.it Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13docs/zh_CN: sync reporting-issues.rstWu XiangCheng1-355/+421
Sync zh translation reporting-issues.rst to commit 58c539453b71 ("docs: reporting-issues: reduce quoting and assorted fixes") Drop reporting-bug.rst Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/20210413072934.GA2674@bobwxc.top Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13docs/zh_CN: Link zh_CN/doc-guide to zh_CN/index.rstWu XiangCheng1-0/+1
Add zh_CN/doc-guide entry in zh_CN/index.rst Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/8738b39c1b54e15477a937c861f114165a8c0648.1618295149.git.bobwxc@email.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13docs/zh_CN: Add translation zh_CN/doc-guide/index.rstWu XiangCheng1-0/+27
Add new translation Documentation/translations/zh_CN/doc-guide/index.rst Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/4a01400c3d65b2f7eb1c1bebd3a0e102ed29208f.1618295149.git.bobwxc@email.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13docs/zh_CN: Add translation zh_CN/doc-guide/maintainer-profile.rstWu XiangCheng1-0/+43
Add new translation Documentation/translations/zh_CN/doc-guide/maintainer-profile.rst Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/0ea1acfd30e8a0f2676981100e27513178cde06b.1618295149.git.bobwxc@email.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13docs/zh_CN: Add translation zh_CN/doc-guide/contributing.rstWu XiangCheng1-0/+238
Add new translation Documentation/translations/zh_CN/doc-guide/contributing.rst Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/3c48979277abe63d1d157c7eb9187d32380db42a.1618295149.git.bobwxc@email.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13docs/zh_CN: Add translation zh_CN/doc-guide/parse-headers.rstWu XiangCheng1-0/+187
Add new translation Documentation/translations/zh_CN/doc-guide/parse-headers.rst Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/81d98cf80325ff3b1c4145965bc7d05ddb2b3c49.1618295149.git.bobwxc@email.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13docs/zh_CN: Add translation zh_CN/doc-guide/kernel-doc.rstWu XiangCheng1-0/+500
Add new translation Documentation/translations/zh_CN/doc-guide/kernel-doc.rst Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/783d134b1dd18f580f2c0511c2330382a86e79b5.1618295149.git.bobwxc@email.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13docs/zh_CN: Add translation zh_CN/doc-guide/sphinx.rstWu XiangCheng1-0/+415
Add new translation Documentation/translations/zh_CN/doc-guide/sphinx.rst Signed-off-by: Wu XiangCheng <bobwxc@email.cn> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/7c8c2eeb6c0b73410fbdb66cf702dc0e58b02a3e.1618295149.git.bobwxc@email.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13Documentation/submitting-patches: Document RESEND tag on patchesBorislav Petkov1-0/+10
Explain when a submitter should tag a patch or a patch series with the "RESEND" tag. This has been partially carved out from a tip subsystem handbook patchset by Thomas Gleixner: https://lkml.kernel.org/r/20181107171010.421878737@linutronix.de and incorporates follow-on comments. Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-04-13f2fs: document: add description about compressed space handlingChao Yu1-0/+8
User or developer may still be confused about why f2fs doesn't expose compressed space to userspace, add description about compressed space handling policy into f2fs documentation. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2021-04-13arm64: Introduce prctl(PR_PAC_{SET,GET}_ENABLED_KEYS)Peter Collingbourne1-0/+34
This change introduces a prctl that allows the user program to control which PAC keys are enabled in a particular task. The main reason why this is useful is to enable a userspace ABI that uses PAC to sign and authenticate function pointers and other pointers exposed outside of the function, while still allowing binaries conforming to the ABI to interoperate with legacy binaries that do not sign or authenticate pointers. The idea is that a dynamic loader or early startup code would issue this prctl very early after establishing that a process may load legacy binaries, but before executing any PAC instructions. This change adds a small amount of overhead to kernel entry and exit due to additional required instruction sequences. On a DragonBoard 845c (Cortex-A75) with the powersave governor, the overhead of similar instruction sequences was measured as 4.9ns when simulating the common case where IA is left enabled, or 43.7ns when simulating the uncommon case where IA is disabled. These numbers can be seen as the worst case scenario, since in more realistic scenarios a better performing governor would be used and a newer chip would be used that would support PAC unlike Cortex-A75 and would be expected to be faster than Cortex-A75. On an Apple M1 under a hypervisor, the overhead of the entry/exit instruction sequences introduced by this patch was measured as 0.3ns in the case where IA is left enabled, and 33.0ns in the case where IA is disabled. Signed-off-by: Peter Collingbourne <pcc@google.com> Reviewed-by: Dave Martin <Dave.Martin@arm.com> Link: https://linux-review.googlesource.com/id/Ibc41a5e6a76b275efbaa126b31119dc197b927a5 Link: https://lore.kernel.org/r/d6609065f8f40397a4124654eb68c9f490b4d477.1616123271.git.pcc@google.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-04-13Merge remote-tracking branch 'arm64/for-next/vhe-only' into kvmarm-master/nextMarc Zyngier1-2/+1
Signed-off-by: Marc Zyngier <maz@kernel.org>
2021-04-13Merge branch 'kvm-arm64/vlpi-save-restore' into kvmarm-master/nextMarc Zyngier1-1/+1
Signed-off-by: Marc Zyngier <maz@kernel.org>
2021-04-13Merge branch 'kvm-arm64/vgic-5.13' into kvmarm-master/nextMarc Zyngier1-1/+1
Signed-off-by: Marc Zyngier <maz@kernel.org>
2021-04-13Merge branch 'kvm-arm64/ptp' into kvmarm-master/nextMarc Zyngier3-0/+36
Signed-off-by: Marc Zyngier <maz@kernel.org>
2021-04-13Merge branch 'kvm-arm64/misc-5.13' into kvmarm-master/nextMarc Zyngier1-0/+12
Signed-off-by: Marc Zyngier <maz@kernel.org>
2021-04-13Merge branch 'kvm-arm64/debug-5.13' into kvmarm-master/nextMarc Zyngier1-1/+2
Signed-off-by: Marc Zyngier <maz@kernel.org>
2021-04-13Merge tag 'thunderbolt-for-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-nextGreg Kroah-Hartman1-28/+7
Mika writes: thunderbolt: Changes for v5.13 merge window This includes following Thunderbolt/USB4 changes for v5.13 merge window: * Debugfs improvements * Align the inter-domain (peer-to-peer) support with the USB4 inter-domain spec for better interoperability * Add support for USB4 DROM and the new product descriptor * More KUnit tests * Detailed uevent for routers * Few miscellaneous improvements All these have been in linux-next without reported issues. * tag 'thunderbolt-for-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (24 commits) thunderbolt: Hide authorized attribute if router does not support PCIe tunnels thunderbolt: Add details to router uevent thunderbolt: Unlock on error path in tb_domain_add() thunderbolt: Add support for USB4 DROM thunderbolt: Check quirks in tb_switch_add() thunderbolt: Add KUnit tests for DMA tunnels thunderbolt: Add KUnit tests for XDomain properties net: thunderbolt: Align the driver to the USB4 networking spec thunderbolt: Allow multiple DMA tunnels over a single XDomain connection thunderbolt: Drop unused tb_port_set_initial_credits() thunderbolt: Use dedicated flow control for DMA tunnels thunderbolt: Add support for maxhopid XDomain property thunderbolt: Add tb_property_copy_dir() thunderbolt: Align XDomain protocol timeouts with the spec thunderbolt: Use pseudo-random number as initial property block generation thunderbolt: Do not re-establish XDomain DMA paths automatically thunderbolt: Add more logging to XDomain connections Documentation / thunderbolt: Drop speed/lanes entries for XDomain thunderbolt: Decrease control channel timeout for software connection manager thunderbolt: Do not pass timeout for tb_cfg_reset() ...
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