summaryrefslogtreecommitdiffstats
path: root/Documentation/admin-guide (follow)
Commit message (Collapse)AuthorAgeFilesLines
* Merge tag 'usb-5.9-rc1' of ↵Linus Torvalds2020-08-051-5/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB/Thunderbolt updates from Greg KH: "Here is the large set of USB and Thunderbolt patches for 5.9-rc1. Nothing really magic/major in here, just lots of little changes and updates: - clean up language usages in USB core and some drivers - Thunderbolt driver updates and additions - USB Gadget driver updates - dwc3 driver updates (like always...) - build with "W=1" warning fixups - mtu3 driver updates - usb-serial driver updates and device ids - typec additions and updates for new hardware - xhci debug code updates for future platforms - cdns3 driver updates - lots of other minor driver updates and fixes and cleanups All of these have been in linux-next for a while with no reported issues" * tag 'usb-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (330 commits) usb: common: usb-conn-gpio: Register charger usb: mtu3: simplify mtu3_req_complete() usb: mtu3: clear dual mode of u3port when disable device usb: mtu3: use MTU3_EP_WEDGE flag usb: mtu3: remove useless member @busy in mtu3_ep struct usb: mtu3: remove repeated error log usb: mtu3: add ->udc_set_speed() usb: mtu3: introduce a funtion to check maximum speed usb: mtu3: clear interrupts status when disable interrupts usb: mtu3: reinitialize CSR registers usb: mtu3: fix macro for maximum number of packets usb: mtu3: remove unnecessary pointer checks usb: xhci: Fix ASMedia ASM1142 DMA addressing usb: xhci: define IDs for various ASMedia host controllers usb: musb: convert to devm_platform_ioremap_resource_byname usb: gadget: tegra-xudc: convert to devm_platform_ioremap_resource_byname usb: gadget: r8a66597: convert to devm_platform_ioremap_resource_byname usb: dwc3: convert to devm_platform_ioremap_resource_byname usb: cdns3: convert to devm_platform_ioremap_resource_byname usb: phy: am335x: convert to devm_platform_ioremap_resource_byname ...
| * Merge tag 'thunderbolt-for-v5.9' of ↵Greg Kroah-Hartman2020-07-211-5/+6
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next Mika writes: thunderbolt: Changes for v5.9 merge window This includes following Thunderbolt/USB4 changes for v5.9 merge window: * Improvements around NHI (Native Host Interface) HopID allocation * Improvements to tunneling and USB3 bandwidth management support * Add KUnit tests for path walking and tunneling * Initial support for USB4 retimer firmware upgrade * Implement Thunderbolt device firmware upgrade mechanism that runs the NVM image authentication when the device is disconnected. * A couple of small non-critical fixes * tag 'thunderbolt-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (32 commits) thunderbolt: Fix old style declaration warning thunderbolt: Add support for authenticate on disconnect thunderbolt: Add support for separating the flush to SPI and authenticate thunderbolt: Ensure left shift of 512 does not overflow a 32 bit int thunderbolt: Add support for on-board retimers thunderbolt: Implement USB4 port sideband operations for retimer access thunderbolt: Retry USB4 block read operation thunderbolt: Generalize usb4_switch_do_[read|write]_data() thunderbolt: Split common NVM functionality into a separate file thunderbolt: Add Intel USB-IF ID to the NVM upgrade supported list thunderbolt: Add KUnit tests for tunneling thunderbolt: Add USB3 bandwidth management thunderbolt: Make tb_port_get_link_speed() available to other files thunderbolt: Implement USB3 bandwidth negotiation routines thunderbolt: Increase DP DPRX wait timeout thunderbolt: Report consumed bandwidth in both directions thunderbolt: Make usb4_switch_map_pcie_down() also return enabled ports thunderbolt: Make usb4_switch_map_usb3_down() also return enabled ports thunderbolt: Do not tunnel USB3 if link is not USB4 thunderbolt: Add DP IN resources for all routers ...
| | * thunderbolt: Add support for on-board retimersKranthi Kuntala2020-06-221-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | USB4 spec specifies standard access to retimers (both on-board and cable) through USB4 port sideband access. This makes it possible to upgrade their firmware in the same way than we already do with the routers. This enumerates on-board retimers under each USB4 port when the link comes up and adds them to the bus under the router the retimer belongs to. Retimers are exposed in sysfs with name like <device>:<port>.<index> where device is the router the retimer belongs to, port is the USB4 port the retimer is connected to and index is the retimer index under that port (starting from 1). This applies to the upstream USB4 port as well so if there is on-board retimer between the port and the router it is also added accordingly. At this time we do not add cable retimers but there is no techincal restriction to do so in the future if needed. It is not clear whether it makes sense to upgrade their firmwares and at least Thunderbolt 3 cables it has not been done outside of lab environments. The sysfs interface is made to follow the router NVM upgrade to make it easy to extend the existing userspace (fwupd) to handle these as well. Signed-off-by: Kranthi Kuntala <kranthi.kuntala@intel.com> Co-developed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
* | | Merge tag 'driver-core-5.9-rc1' of ↵Linus Torvalds2020-08-051-0/+15
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the "big" set of changes to the driver core, and some drivers using the changes, for 5.9-rc1. "Biggest" thing in here is the device link exposure in sysfs, to help to tame the madness that is SoC device tree representations and driver interactions with it. Other stuff in here that is interesting is: - device probe log helper so that drivers can report problems in a unified way easier. - devres functions added - DEVICE_ATTR_ADMIN_* macro added to make it harder to write incorrect sysfs file permissions - documentation cleanups - ability for debugfs to be present in the kernel, yet not exposed to userspace. Needed for systems that want it enabled, but do not trust users, so they can still use some kernel functions that were otherwise disabled. - other minor fixes and cleanups The patches outside of drivers/base/ all have acks from the respective subsystem maintainers to go through this tree instead of theirs. All of these have been in linux-next with no reported issues" * tag 'driver-core-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (39 commits) drm/bridge: lvds-codec: simplify error handling drm/bridge/sii8620: fix resource acquisition error handling driver core: add deferring probe reason to devices_deferred property driver core: add device probe log helper driver core: Avoid binding drivers to dead devices Revert "test_firmware: Test platform fw loading on non-EFI systems" firmware_loader: EFI firmware loader must handle pre-allocated buffer selftest/firmware: Add selftest timeout in settings test_firmware: Test platform fw loading on non-EFI systems driver core: Change delimiter in devlink device's name to "--" debugfs: Add access restriction option tracefs: Remove unnecessary debug_fs checks. driver core: Fix probe_count imbalance in really_probe() kobject: remove unused KOBJ_MAX action driver core: Fix sleeping in invalid context during device link deletion driver core: Add waiting_for_supplier sysfs file for devices driver core: Add state_synced sysfs file for devices that support it driver core: Expose device link details in sysfs driver core: Drop mention of obsolete bus rwsem from kernel-doc debugfs: file: Remove unnecessary cast in kfree() ...
| * | | debugfs: Add access restriction optionPeter Enderborg2020-07-231-0/+15
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since debugfs include sensitive information it need to be treated carefully. But it also has many very useful debug functions for userspace. With this option we can have same configuration for system with need of debugfs and a way to turn it off. This gives a extra protection for exposure on systems where user-space services with system access are attacked. It is controlled by a configurable default value that can be override with a kernel command line parameter. (debugfs=) It can be on or off, but also internally on but not seen from user-space. This no-mount mode do not register a debugfs as filesystem, but client can register their parts in the internal structures. This data can be readed with a debugger or saved with a crashkernel. When it is off clients get EPERM error when accessing the functions for registering their components. Signed-off-by: Peter Enderborg <peter.enderborg@sony.com> Link: https://lore.kernel.org/r/20200716071511.26864-3-peter.enderborg@sony.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | Merge tag 'char-misc-5.9-rc1' of ↵Linus Torvalds2020-08-051-12/+17
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the large set of char and misc and other driver subsystem patches for 5.9-rc1. Lots of new driver submissions in here, and cleanups and features for existing drivers. Highlights are: - habanalabs driver updates - coresight driver updates - nvmem driver updates - huge number of "W=1" build warning cleanups from Lee Jones - dyndbg updates - virtbox driver fixes and updates - soundwire driver updates - mei driver updates - phy driver updates - fpga driver updates - lots of smaller individual misc/char driver cleanups and fixes Full details are in the shortlog. All of these have been in linux-next with no reported issues" * tag 'char-misc-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (322 commits) habanalabs: remove unused but set variable 'ctx_asid' nvmem: qcom-spmi-sdam: Enable multiple devices dt-bindings: nvmem: SID: add binding for A100's SID controller nvmem: update Kconfig description nvmem: qfprom: Add fuse blowing support dt-bindings: nvmem: Add properties needed for blowing fuses dt-bindings: nvmem: qfprom: Convert to yaml nvmem: qfprom: use NVMEM_DEVID_AUTO for multiple instances nvmem: core: add support to auto devid nvmem: core: Add nvmem_cell_read_u8() nvmem: core: Grammar fixes for help text nvmem: sc27xx: add sc2730 efuse support nvmem: Enforce nvmem stride in the sysfs interface MAINTAINERS: Add git tree for NVMEM FRAMEWORK nvmem: sprd: Fix return value of sprd_efuse_probe() drivers: android: Fix the SPDX comment style drivers: android: Fix a variable declaration coding style issue drivers: android: Remove braces for a single statement if-else block drivers: android: Remove the use of else after return drivers: android: Fix a variable declaration coding style issue ...
| * | | dyndbg: accept query terms like file=bar and module=fooJim Cromie2020-07-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current code expects "keyword" "arg" as 2 words, space separated. Change to also accept "keyword=arg" form as well, and drop !(nwords%2) requirement. Then in rest of function, use new keyword, arg variables instead of word[i], word[i+1] Acked-by: <jbaron@akamai.com> Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Link: https://lore.kernel.org/r/20200719231058.1586423-15-jim.cromie@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | dyndbg: accept 'file foo.c:func1' and 'file foo.c:10-100'Jim Cromie2020-07-241-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Accept these additional query forms: echo "file $filestr +_" > control path/to/file.c:100 # as from control, column 1 path/to/file.c:1-100 # or any legal line-range path/to/file.c:func_A # as from an editor/browser path/to/file.c:drm_* # wildcards still work path/to/file.c:*_foo # lead wildcard too 1st 2 examples are treated as line-ranges, 3-5 are treated as func's Doc these changes, and sprinkle in a few extra wild-card examples and trailing # explanation texts. Acked-by: <jbaron@akamai.com> Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Link: https://lore.kernel.org/r/20200719231058.1586423-14-jim.cromie@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | dyndbg-docs: initialization is done early, not archJim Cromie2020-07-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | since cf964976484 in 2012, initialization is done with early_initcall, update the Docs, which still say arch_initcall. Acked-by: <jbaron@akamai.com> Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Link: https://lore.kernel.org/r/20200719231058.1586423-3-jim.cromie@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | dyndbg-docs: eschew file /full/path query in docsJim Cromie2020-07-241-10/+9
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Regarding: commit 2b6783191da7 ("dynamic_debug: add trim_prefix() to provide source-root relative paths") commit a73619a845d5 ("kbuild: use -fmacro-prefix-map to make __FILE__ a relative path") 2nd commit broke dynamic-debug's "file $fullpath" query form, but nobody noticed because 1st commit had trimmed prefixes from control-file output, so the click-copy-pasting of fullpaths into new queries had ceased; that query form became unused. Removing the function is cleanest, but it could be useful in old-compiler corner cases, where __FILE__ still has /full/path, and it safely does nothing otherwize. So instead, quietly deprecate "file /full/path" query form, by removing all /full/paths examples in the docs. I skipped adding a back-compat note. Acked-by: <jbaron@akamai.com> Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Link: https://lore.kernel.org/r/20200719231058.1586423-2-jim.cromie@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | Merge tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-blockLinus Torvalds2020-08-051-0/+4
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block driver updates from Jens Axboe: - NVMe: - ZNS support (Aravind, Keith, Matias, Niklas) - Misc cleanups, optimizations, fixes (Baolin, Chaitanya, David, Dongli, Max, Sagi) - null_blk zone capacity support (Aravind) - MD: - raid5/6 fixes (ChangSyun) - Warning fixes (Damien) - raid5 stripe fixes (Guoqing, Song, Yufen) - sysfs deadlock fix (Junxiao) - raid10 deadlock fix (Vitaly) - struct_size conversions (Gustavo) - Set of bcache updates/fixes (Coly) * tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-block: (117 commits) md/raid5: Allow degraded raid6 to do rmw md/raid5: Fix Force reconstruct-write io stuck in degraded raid5 raid5: don't duplicate code for different paths in handle_stripe raid5-cache: hold spinlock instead of mutex in r5c_journal_mode_show md: print errno in super_written md/raid5: remove the redundant setting of STRIPE_HANDLE md: register new md sysfs file 'uuid' read-only md: fix max sectors calculation for super 1.0 nvme-loop: remove extra variable in create ctrl nvme-loop: set ctrl state connecting after init nvme-multipath: do not fall back to __nvme_find_path() for non-optimized paths nvme-multipath: fix logic for non-optimized paths nvme-rdma: fix controller reset hang during traffic nvme-tcp: fix controller reset hang during traffic nvmet: introduce the passthru Kconfig option nvmet: introduce the passthru configfs interface nvmet: Add passthru enable/disable helpers nvmet: add passthru code to process commands nvme: export nvme_find_get_ns() and nvme_put_ns() nvme: introduce nvme_ctrl_get_by_path() ...
| * | | md: register new md sysfs file 'uuid' read-onlySebastian Parschauer2020-08-031-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Report the UUID of the MD array in the following format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx This is useful if you don't want to wait for udev to identify array. And it is also easy for script to monitor it with the format. Signed-off-by: Sebastian Parschauer <s.parschauer@gmx.de> [Guoqing: mention the change in md.rst] Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.com>
* | | | Merge tag 'docs-5.9' of git://git.lwn.net/linuxLinus Torvalds2020-08-0541-81/+419
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull documentation updates from Jonathan Corbet: "It's been a busy cycle for documentation - hopefully the busiest for a while to come. Changes include: - Some new Chinese translations - Progress on the battle against double words words and non-HTTPS URLs - Some block-mq documentation - More RST conversions from Mauro. At this point, that task is essentially complete, so we shouldn't see this kind of churn again for a while. Unless we decide to switch to asciidoc or something...:) - Lots of typo fixes, warning fixes, and more" * tag 'docs-5.9' of git://git.lwn.net/linux: (195 commits) scripts/kernel-doc: optionally treat warnings as errors docs: ia64: correct typo mailmap: add entry for <alobakin@marvell.com> doc/zh_CN: add cpu-load Chinese version Documentation/admin-guide: tainted-kernels: fix spelling mistake MAINTAINERS: adjust kprobes.rst entry to new location devices.txt: document rfkill allocation PCI: correct flag name docs: filesystems: vfs: correct flag name docs: filesystems: vfs: correct sync_mode flag names docs: path-lookup: markup fixes for emphasis docs: path-lookup: more markup fixes docs: path-lookup: fix HTML entity mojibake CREDITS: Replace HTTP links with HTTPS ones docs: process: Add an example for creating a fixes tag doc/zh_CN: add Chinese translation prefer section doc/zh_CN: add clearing-warn-once Chinese version doc/zh_CN: add admin-guide index doc:it_IT: process: coding-style.rst: Correct __maybe_unused compiler label futex: MAINTAINERS: Re-add selftests directory ...
| * | | | Documentation/admin-guide: tainted-kernels: fix spelling mistakeYue Hu2020-07-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix typo "tis" -> "this". Signed-off-by: Yue Hu <huyue2@yulong.com> Link: https://lore.kernel.org/r/20200725022444.10976-1-zbestahu@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | devices.txt: document rfkill allocationPavel Machek2020-07-281-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Document rfkill allocation. Signed-off-by: Pavel Machek (CIP) <pavel@denx.de> Link: https://lore.kernel.org/r/20200726075327.GA25647@duo.ucw.cz Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | docs: admin-guide/mm/index: Fix reference to nonexistent documentDaniel W. S. Almeida2020-07-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following warning: WARNING: toctree contains reference to nonexistent document 'admin-guide/mm/nommu-map' This was due to a typo. Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-1-dwlsalmeida@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | docs: admin-guide/index.rst: Add pstore-blk.rstDaniel W. S. Almeida2020-07-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following warning: Documentation/admin-guide/pstore-blk.rst: WARNING: document isn't included in any toctree By adding 'pstore-blk.rst' to the index Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> Link: https://lore.kernel.org/r/20200718165107.625847-9-dwlsalmeida@gmail.com Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | docs/mm: concepts.rst: remove unnecessary wordBhaskar Chowdhury2020-07-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Link: https://lore.kernel.org/r/20200721112251.6100-1-unixbhaskar@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation: numaperf: eliminate duplicated wordRandy Dunlap2020-07-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the duplicated word "not". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: linux-mm@vger.kernel.org Cc: Mike Rapoport <rppt@kernel.org> Link: https://lore.kernel.org/r/20200707180414.10467-2-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | doc: yama: Swap HTTP for HTTPS and replace dead linkKees Cook2020-07-131-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace one dead link for the same person's original presentation on the topic and swap an HTTP URL with HTTPS. While here, linkify the text to make it more readable when rendered. Link: https://lore.kernel.org/lkml/20200708073346.13177-1-grandmaster@al2klimov.de/ Co-developed-by: Alexander A. Klimov <grandmaster@al2klimov.de> Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/202007091141.C008B89EC@keescook Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/security-bugs: Explain why plain text is preferredKees Cook2020-07-131-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The security contact list gets regular reports contained in archive attachments. This tends to add some back-and-forth delay in dealing with security reports since we have to ask for plain text, etc. Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Acked-by: Will Deacon <will@kernel.org> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/202007091110.205DC6A9@keescook Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | doc: cgroup: add f2fs and xfs to supported list for writebackEric Sandeen2020-07-051-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | f2fs and xfs have both added support for cgroup writeback: 578c647 f2fs: implement cgroup writeback support adfb5fb xfs: implement cgroup aware writeback so add them to the supported list in the docs. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Link: https://lore.kernel.org/r/c8271324-9132-388c-5242-d7699f011892@redhat.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Replace HTTP links with HTTPS ones: LVMAlexander A. Klimov2020-07-052-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200627103138.71885-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | docs: CIFS: remove a spam-site URLJonathan Corbet2020-07-051-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | protocolfreedom.org may have one contained something useful, but now it wants to sell us new credit cards. Take it out. Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Replace HTTP links with HTTPS ones: CIFSAlexander A. Klimov2020-07-053-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Link: https://lore.kernel.org/r/20200627103125.71828-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Replace HTTP links with HTTPS ones: DRBD driverAlexander A. Klimov2020-07-052-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200627103111.71771-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Replace HTTP links with HTTPS ones: Documentation/admin-guideAlexander A. Klimov2020-07-0512-20/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200627072935.62652-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: xfs: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "for". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: linux-xfs@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-14-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: tainted-kernels: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "the". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-13-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: sysctl/kernel: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "set". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-12-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: intel-speed-select: drop doubled wordsRandy Dunlap2020-07-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled words "that" and "and". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: platform-driver-x86@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-11-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: intel_pstate: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "to". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Len Brown <lenb@kernel.org> Cc: linux-pm@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-10-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: arm-ccn: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "as". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-9-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: pnfs-scsi-server: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "with". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Trond Myklebust <trond.myklebust@hammerspace.com> Cc: Anna Schumaker <anna.schumaker@netapp.com> Cc: linux-nfs@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-8-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: pnfs-block-server: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "with". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Trond Myklebust <trond.myklebust@hammerspace.com> Cc: Anna Schumaker <anna.schumaker@netapp.com> Cc: linux-nfs@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-7-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: mm/ksm: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "the". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-mm@kvack.org Link: https://lore.kernel.org/r/20200704032020.21923-6-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: media/building: drop doubled wordsRandy Dunlap2020-07-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop some doubled words. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: linux-media@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-5-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: dm-integrity: drop doubled wordsRandy Dunlap2020-07-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled words "on" and "the". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: dm-devel@redhat.com Link: https://lore.kernel.org/r/20200704032020.21923-4-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: cgroup-v1/rdma: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "echo". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: cgroups@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-3-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation/admin-guide: cgroup-v2: drop doubled wordRandy Dunlap2020-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the doubled word "of". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: cgroups@vger.kernel.org Link: https://lore.kernel.org/r/20200704032020.21923-2-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Merge branch 'mauro' into docs-nextJonathan Corbet2020-06-264-7/+302
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | A big set of fixes and RST conversions from Mauro. He swears that this is the last RST conversion set, which is certainly cause for celebration.
| | * | | | docs: move nommu-mmap.txt to admin-guide and rename to ReSTMauro Carvalho Chehab2020-06-263-1/+285
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nommu-mmap.txt file provides description of user visible behaviuour. So, move it to the admin-guide. As it is already at the ReST, also rename it. Suggested-by: Mike Rapoport <rppt@linux.ibm.com> Suggested-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/3a63d1833b513700755c85bf3bda0a6c4ab56986.1592918949.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| | * | | | docs: hugetlbpage.rst: fix some warningsMauro Carvalho Chehab2020-06-261-6/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some new command line parameters were added at hugetlbpage.rst. Adjust them in order to properly parse that part of the file, avoiding those warnings: Documentation/admin-guide/mm/hugetlbpage.rst:105: WARNING: Unexpected indentation. Documentation/admin-guide/mm/hugetlbpage.rst:108: WARNING: Unexpected indentation. Documentation/admin-guide/mm/hugetlbpage.rst:109: WARNING: Block quote ends without a blank line; unexpected unindent. Documentation/admin-guide/mm/hugetlbpage.rst:112: WARNING: Block quote ends without a blank line; unexpected unindent. Documentation/admin-guide/mm/hugetlbpage.rst:120: WARNING: Unexpected indentation. Documentation/admin-guide/mm/hugetlbpage.rst:121: WARNING: Block quote ends without a blank line; unexpected unindent. Documentation/admin-guide/mm/hugetlbpage.rst:132: WARNING: Unexpected indentation. Documentation/admin-guide/mm/hugetlbpage.rst:135: WARNING: Block quote ends without a blank line; unexpected unindent. Fixes: cd9fa28b5351 ("hugetlbfs: clean up command line processing") Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/86b6796b1a84e18b24314ecd29318951c1479ca2.1592895969.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | | docs: sysctl/kernel: document randomStephen Kitt2020-06-261-0/+32
| |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This documents the random directory, based on the behaviour seen in drivers/char/random.c. Signed-off-by: Stephen Kitt <steve@sk2.org> Link: https://lore.kernel.org/r/20200623112514.10650-1-steve@sk2.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | Documentation: fix sysctl/kernel.rst heading format warningsRandy Dunlap2020-06-191-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix heading format warnings in admin-guide/sysctl/kernel.rst: Documentation/admin-guide/sysctl/kernel.rst:339: WARNING: Title underline too short. hung_task_all_cpu_backtrace: ================ Documentation/admin-guide/sysctl/kernel.rst:650: WARNING: Title underline too short. oops_all_cpu_backtrace: ================ Fixes: 0ec9dc9bcba0 ("kernel/hung_task.c: introduce sysctl to print all traces when a hung task is detected") Fixes: 60c958d8df9c ("panic: add sysctl to dump all CPUs backtraces on oops event") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/8af1cb77-4b5a-64b9-da5d-f6a95e537f99@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | doc: x86/speculation: length of underlinesHeinrich Schuchardt2020-06-191-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lengths of underlines must match the titles to avoid build warnings. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Mark Gross<mgross@linux.intel.com> Link: https://lore.kernel.org/r/20200615203645.11545-1-xypron.glpk@gmx.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * | | | doc: add novamap to efi kernel command line parametersHeinrich Schuchardt2020-06-191-8/+10
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Document the efi=novamap kernel command line parameter. Put the efi parameters into alphabetic order. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Link: https://lore.kernel.org/r/20200616104012.4780-1-xypron.glpk@gmx.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | | | Merge tag 'x86-fsgsbase-2020-08-04' of ↵Linus Torvalds2020-08-051-0/+2
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fsgsbase from Thomas Gleixner: "Support for FSGSBASE. Almost 5 years after the first RFC to support it, this has been brought into a shape which is maintainable and actually works. This final version was done by Sasha Levin who took it up after Intel dropped the ball. Sasha discovered that the SGX (sic!) offerings out there ship rogue kernel modules enabling FSGSBASE behind the kernels back which opens an instantanious unpriviledged root hole. The FSGSBASE instructions provide a considerable speedup of the context switch path and enable user space to write GSBASE without kernel interaction. This enablement requires careful handling of the exception entries which go through the paranoid entry path as they can no longer rely on the assumption that user GSBASE is positive (as enforced via prctl() on non FSGSBASE enabled systemn). All other entries (syscalls, interrupts and exceptions) can still just utilize SWAPGS unconditionally when the entry comes from user space. Converting these entries to use FSGSBASE has no benefit as SWAPGS is only marginally slower than WRGSBASE and locating and retrieving the kernel GSBASE value is not a free operation either. The real benefit of RD/WRGSBASE is the avoidance of the MSR reads and writes. The changes come with appropriate selftests and have held up in field testing against the (sanitized) Graphene-SGX driver" * tag 'x86-fsgsbase-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) x86/fsgsbase: Fix Xen PV support x86/ptrace: Fix 32-bit PTRACE_SETREGS vs fsbase and gsbase selftests/x86/fsgsbase: Add a missing memory constraint selftests/x86/fsgsbase: Fix a comment in the ptrace_write_gsbase test selftests/x86: Add a syscall_arg_fault_64 test for negative GSBASE selftests/x86/fsgsbase: Test ptracer-induced GS base write with FSGSBASE selftests/x86/fsgsbase: Test GS selector on ptracer-induced GS base write Documentation/x86/64: Add documentation for GS/FS addressing mode x86/elf: Enumerate kernel FSGSBASE capability in AT_HWCAP2 x86/cpu: Enable FSGSBASE on 64bit by default and add a chicken bit x86/entry/64: Handle FSGSBASE enabled paranoid entry/exit x86/entry/64: Introduce the FIND_PERCPU_BASE macro x86/entry/64: Switch CR3 before SWAPGS in paranoid entry x86/speculation/swapgs: Check FSGSBASE in enabling SWAPGS mitigation x86/process/64: Use FSGSBASE instructions on thread copy and ptrace x86/process/64: Use FSBSBASE in switch_to() if available x86/process/64: Make save_fsgs_for_kvm() ready for FSGSBASE x86/fsgsbase/64: Enable FSGSBASE instructions in helper functions x86/fsgsbase/64: Add intrinsics for FSGSBASE instructions x86/cpu: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE ...
| * | | | x86/cpu: Enable FSGSBASE on 64bit by default and add a chicken bitAndy Lutomirski2020-06-181-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that FSGSBASE is fully supported, remove unsafe_fsgsbase, enable FSGSBASE by default, and add nofsgsbase to disable it. Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andi Kleen <ak@linux.intel.com> Link: https://lkml.kernel.org/r/1557309753-24073-17-git-send-email-chang.seok.bae@intel.com Link: https://lkml.kernel.org/r/20200528201402.1708239-13-sashal@kernel.org
| * | | | x86/cpu: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASEAndy Lutomirski2020-06-181-0/+3
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is temporary. It will allow the next few patches to be tested incrementally. Setting unsafe_fsgsbase is a root hole. Don't do it. Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andi Kleen <ak@linux.intel.com> Reviewed-by: Andy Lutomirski <luto@kernel.org> Link: https://lkml.kernel.org/r/1557309753-24073-4-git-send-email-chang.seok.bae@intel.com Link: https://lkml.kernel.org/r/20200528201402.1708239-3-sashal@kernel.org