BMC/Intel-BMC/linux.git/Documentation, branch dev-5.8

Merge tag 'v5.8.5' into dev-5.8

2020-08-31T00:46:57+00:00

This is the 5.8.5 stable release Signed-off-by: Joel Stanley

x86/bugs/multihit: Fix mitigation reporting when VMX is not in use

2020-08-21T11:15:15+00:00

[ Upstream commit f29dfa53cc8ae6ad93bae619bcc0bf45cab344f7 ] On systems that have virtualization disabled or unsupported, sysfs mitigation for X86_BUG_ITLB_MULTIHIT is reported incorrectly as: $ cat /sys/devices/system/cpu/vulnerabilities/itlb_multihit KVM: Vulnerable System is not vulnerable to DoS attack from a rogue guest when virtualization is disabled or unsupported in the hardware. Change the mitigation reporting for these cases. Fixes: b8e8c8303ff2 ("kvm: mmu: ITLB_MULTIHIT mitigation") Reported-by: Nelson Dsouza Co-developed-by: Sean Christopherson Signed-off-by: Sean Christopherson Signed-off-by: Pawan Gupta Signed-off-by: Ingo Molnar Reviewed-by: Tony Luck Acked-by: Thomas Gleixner Link: https://lore.kernel.org/r/0ba029932a816179b9d14a30db38f0f11ef1f166.1594925782.git.pawan.kumar.gupta@linux.intel.com Signed-off-by: Sasha Levin

dt-bindings: iio: io-channel-mux: Fix compatible string in example code

2020-08-21T11:14:52+00:00

commit add48ba425192c6e04ce70549129cacd01e2a09e upstream. The correct compatible string is "gpio-mux" (see bindings/mux/gpio-mux.txt). Cc: stable@vger.kernel.org # v4.13+ Reviewed-by: Peter Rosin Signed-off-by: Christian Eggers Link: https://lore.kernel.org/r/20200727101605.24384-1-ceggers@arri.de Signed-off-by: Rob Herring Signed-off-by: Greg Kroah-Hartman

powerpc/pseries: remove cede offline state for CPUs

2020-08-19T06:26:35+00:00

[ Upstream commit 48f6e7f6d948b56489da027bc3284c709b939d28 ] This effectively reverts commit 3aa565f53c39 ("powerpc/pseries: Add hooks to put the CPU into an appropriate offline state"), which added an offline mode for CPUs which uses the H_CEDE hcall instead of the architected stop-self RTAS function in order to facilitate "folding" of dedicated mode processors on PowerVM platforms to achieve energy savings. This has been the default offline mode since its introduction. There's nothing about stop-self that would prevent the hypervisor from achieving the energy savings available via H_CEDE, so the original premise of this change appears to be flawed. I also have encountered the claim that the transition to and from ceded state is much faster than stop-self/start-cpu. Certainly we would not want to use stop-self as an *idle* mode. That is what H_CEDE is for. However, this difference is insignificant in the context of Linux CPU hotplug, where the latency of an offline or online operation on current systems is on the order of 100ms, mainly attributable to all the various subsystems' cpuhp callbacks. The cede offline mode also prevents accurate accounting, as discussed before: https://lore.kernel.org/linuxppc-dev/1571740391-3251-1-git-send-email-ego@linux.vnet.ibm.com/ Unconditionally use stop-self to offline processor threads. This is the architected method for offlining CPUs on PAPR systems. The "cede_offline" boot parameter is rendered obsolete. Removing this code enables the removal of the partition suspend code which temporarily onlines all present CPUs. Fixes: 3aa565f53c39 ("powerpc/pseries: Add hooks to put the CPU into an appropriate offline state") Signed-off-by: Nathan Lynch Reviewed-by: Gautham R. Shenoy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200612051238.1007764-2-nathanl@linux.ibm.com Signed-off-by: Sasha Levin

dt-bindings: phy: uniphier: Fix incorrect clocks and clock-names for PXs3 usb3-hsphy

2020-08-19T06:26:34+00:00

[ Upstream commit 03815930c162561a5c204494b4160d6ccf631b0b ] The usb3-hsphy for PXs3 SoC needs to accept 3 clocks like usb3-ssphy. Fixes: 134ab2845acb ("dt-bindings: phy: Convert UniPhier USB3-PHY conroller to json-schema") Signed-off-by: Kunihiko Hayashi Link: https://lore.kernel.org/r/1594198664-29381-1-git-send-email-hayashi.kunihiko@socionext.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin

iio: improve IIO_CONCENTRATION channel type description

2020-08-19T06:26:25+00:00

[ Upstream commit df16c33a4028159d1ba8a7061c9fa950b58d1a61 ] IIO_CONCENTRATION together with INFO_RAW specifier is used for reporting raw concentrations of pollutants. Raw value should be meaningless before being properly scaled. Because of that description shouldn't mention raw value unit whatsoever. Fix this by rephrasing existing description so it follows conventions used throughout IIO ABI docs. Fixes: 8ff6b3bc94930 ("iio: chemical: Add IIO_CONCENTRATION channel type") Signed-off-by: Tomasz Duszynski Acked-by: Matt Ranostay Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

dt-bindings: fsi: fsi2spi: Document new restricted property

2020-08-13T03:48:28+00:00

Add documentation for the "fsi2spi,restricted" property which indicates a controller shouldn't sequence loops and therefore has a smaller transfer size. OpenBMC-Staging-Count: 1 Signed-off-by: Eddie James Acked-by: Joel Stanley Signed-off-by: Joel Stanley

dt-bindings: soc: Add Aspeed XDMA Engine

2020-08-06T00:30:34+00:00

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine. OpenBMC-Staging-Count: 2 Signed-off-by: Eddie James Reviewed-by: Andrew Jeffery Reviewed-by: Rob Herring Signed-off-by: Joel Stanley

dt-bindings: fsi: Add P10 OCC device documentation

2020-08-06T00:30:33+00:00

Add the P10 compatible string. OpenBMC-Staging-Count: 3 Signed-off-by: Eddie James Signed-off-by: Joel Stanley

Documentation: hwmon: Add documents for PECI hwmon drivers

2020-08-06T00:30:33+00:00

This commit adds hwmon documents for PECI cputemp and dimmtemp drivers. OpenBMC-Staging-Count: 3 Signed-off-by: Jae Hyun Yoo Reviewed-by: Haiyue Wang Reviewed-by: James Feist Reviewed-by: Vernon Mauery Signed-off-by: Joel Stanley