kernel | Linux kernel images for gokrazy
kandi X-RAY | kernel Summary
kandi X-RAY | kernel Summary
This repository holds a pre-built Linux kernel image for the Raspberry Pi 3, used by the gokrazy project. The files in this repository are picked up automatically by gokr-packer, so you don’t need to interact with this repository unless you want to update the kernel to a custom version.
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Top functions reviewed by kandi - BETA
- Main entry point for container .
- compile is the main entry point to the old config
- copyFile copies src to dest .
- applyPatches applies patches to srcdir
- downloadKernel downloads the latest version of the local node
- getContainerExecutable returns the absolute path of the container executable
- find returns the path of the given filename .
- mustGetGopath returns the gopath executable .
kernel Key Features
kernel Examples and Code Snippets
Community Discussions
Trending Discussions on kernel
QUESTION
I have the error stated above, and here is the copy log
...ANSWER
Answered 2021-Aug-01 at 00:51You need to use the factory trait for the model to have the factory()
method available.
QUESTION
I updated from ruby 2.7.1 to 3.1.1, then removed Gemfile.lock and ran bundle update
(it's on a dev branch, so I can throw it away if this is a bad idea, I just wanted to see if it would work).
bundle update
succeeds, but when I start the server:
ANSWER
Answered 2022-Mar-19 at 10:21The problem is related to the Ruby 3.1 / Psych 4.x incompatibility described in this issue: https://bugs.ruby-lang.org/issues/17866
Ruby 3.0 comes with Psych 3, while Ruby 3.1 comes with Psych 4, which has a major breaking change (diff 3.3.2 → 4.0.0).
- The new YAML loading methods (Psych 4) do not load aliases unless they get the
aliases: true
argument. - The old YAML loading methods (Psych 3) do not support the
aliases
keyword.
At this point, it seems like anyone, anywhere that wants to load YAML in the same way it worked prior to Ruby 3.1, need to do something like this:
QUESTION
I am implementing a simple chatbot using keras and WebSockets. I now have a model that can make a prediction about the user input and send the according answer.
When I do it through command line it works fine, however when I try to send the answer through my WebSocket, the WebSocket doesn't even start anymore.
Here is my working WebSocket code:
...ANSWER
Answered 2022-Feb-16 at 19:53There is no problem with your websocket route. Could you please share how you are triggering this route? Websocket is a different protocol and I'm suspecting that you are using a HTTP client to test websocket. For example in Postman:
HTTP requests are different than websocket requests. So, you should use appropriate client to test websocket.
QUESTION
I upgraded to Rails 7 and Ruby 3.1. While trying to run tests with rspec
I got the error below. How can I fix it?
ANSWER
Answered 2022-Jan-25 at 16:15UPD: on January 6th, 2022 Rails 7.0.1 was released:
The focus of this release is bring support to Ruby 3.1
Amongh other Ruby 3.1-related issues it brought a fix for this problem. So upgrade to Rails >= 7.0.1.
Add gem 'net-smtp', require: false
to your Gemfile and run bundle
.
Similarly I assume you may have problems with net-imap
and net-pop
and so have to add them until a new mail
gem version is released.
Related pull requests and issues:
QUESTION
I can't seem to get output from the lfortran jupyter kernel.
I installed via conda install for:
...ANSWER
Answered 2022-Jan-23 at 22:47The global scope in LFortran is special to enable interactivity and usage in a notebook and defines a set of additional rules. You actually don't need a program
body to run any Fortran code there, just using the print statement directly will work:
QUESTION
While monkey-patching a module from a Rails engine, we found that if you prepend a module B to another module A, the prepended module B won't be added to the ancestors of classes that have already included module A prior to the prepend
. To illustrate:
ANSWER
Answered 2022-Jan-21 at 07:05https://bugs.ruby-lang.org/issues/9573 shows a similar behavior concerning classes and modules. The bug report was posted on 2014 and was only closed 2020. Based on that report, I've manually confirmed that
- This behavior still appears in ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x86_64-linux], but
- This behavior no longer appears in ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-linux]
QUESTION
How to memory-map a PCI Base Address Register (BAR) from a PCIDriverKit driver (DEXT) to a userspace application?
Memory-mapping from a driver extension to an application can be accomplished by implementing the IOUserClient::CopyClientMemoryForType in the user client subclass (on the driver side) and then calling IOConnectMapMemory64 (from the user-space application side). This has been very nicely and thoroughly explained in this related answer.
The only missing bit is getting an IOMemoryDescriptor corresponding to the desired PCI BAR in order to return it from the CopyClientMemoryForType
implementation.
Asked another way, given the following simplified code, what would be the implementation of imaginaryFunctionWhichReturnsTheBARBuffer
?
ANSWER
Answered 2022-Jan-16 at 17:01Turns out IOPCIDevice::_CopyDeviceMemoryWithIndex
was indeed the function needed to implement this (but the fact that it's private is still an inconvenient).
Bellow is some sample code showing how this could be implemented (the code uses MyDriver
for the driver class name and MyDriverUserClient
for the user client).
Relevant sections from MyDriver.cpp
implementation:
QUESTION
I have just browsed the Linux kernel source tree and read the file tools/include/nolibc/nolibc.h.
I saw the syscall
in this file uses %r8
, %r9
and %r10
in the clobber list.
Also there is a comment that says:
rcx and r8..r11 may be clobbered, others are preserved.
As far as I know, syscall
only clobbers %rax
, %rcx
and %r11
(and memory).
Is there a real example of syscall
that clobbers %r8
, %r9
and %r10
?
ANSWER
Answered 2022-Jan-05 at 10:28Only 32-bit system calls (e.g. via int 0x80
) in 64-bit mode step on those registers, along with R11. (What happens if you use the 32-bit int 0x80 Linux ABI in 64-bit code?).
syscall
properly saves/restores all regs including R8, R9, and R10, so user-space using it can assume they keep their values, except the RAX return value. (The kernel's syscall entry point even saves RCX and R11, but at that point they've already been overwritten by the syscall
instruction itself with the original RIP and before-masking RFLAGS value.)
Those, with R11, are the non-legacy registers that are call-clobbered in the function-calling convention, so compiler-generated code for C functions inside the kernel naturally preserves R12-R15, even if an asm entry point didn't save them.
Currently the 64-bit int 0x80
entry point just pushes 0
for the call-clobbered R8-R11 registers in the process-state struct that it will restore from before returning to user space, instead of the original register values.
Historically, the int 0x80
entry point from 32-bit user-space didn't save/restore those registers at all. So their values were whatever compiler-generated kernel code left sitting around. This was thought to be innocent because 32-bit mode can't read those registers, until it was realized that user-space can far-jump to 64-bit mode, using the same CS value that the kernel uses for normal 64-bit user-space processes, selecting that system-wide GDT entry. So there was an actual info leak of kernel data, which was fixed by zeroing those registers.
IDK whether there used to be or still is a separate entry point from 64-bit user-space vs. 32-bit, or how they differ in struct pt_regs
layout. The historical situation where int 0x80
leaked r8..r11 wouldn't have made sense for 64-bit user-space; that leak would have been obvious. So if they're unified now, they must not have been in the past.
QUESTION
I'm trying to install devise in the rails version I get the error of the latest version of devise
I have tried with other devise versions but it is update it to the latest,
this is the error:
...ANSWER
Answered 2022-Jan-04 at 03:31The version of Devise you're using calls a method named reference
.
https://github.com/heartcombo/devise/blob/c82e4cf47b02002b2fd7ca31d441cf1043fc634c/lib/devise.rb#L320-L323
QUESTION
I'm planning to move away from Docker to Podman. I use docker-compose a lot so am planning to switch to podman-compose as well.
However I'm stuck at the simplest of podman examples, I can't seem to mount a volume onto my container? Obviously I'm doing something wrong however I cant figure out what it is.
My source file definitely exists on my (hardware) host (so not the podman machine). but I keep getting the error 'no such file or directory'.
Funny thing is if I manually create the same file locally on the podman machine (podman machine ssh --> touch /tmp/test.txt) it works perfectly fine.
Question is;
- should I (manually?) mount all my local files onto the Fedora VM (podman machine) so that in turn this Fedora mount can be used in my actual container? and if so, how do I do this?
- The
podman run
cmd below should work and there is something else I'm doing wrong?
ANSWER
Answered 2021-Dec-20 at 07:31As mentioned by @ErikSjölund there has been an active treat on https://github.com/containers/podman. Apparantely Centos (Podman Machine) does not (yet) support different types of volume creation on the machine.
It's not perse Podman lacking this feature it's waiting for CentOS to support this feature as well.
However, should you want to mount a local directory onto the machine I recommend have a look at https://github.com/containers/podman/issues/8016#issuecomment-995242552. It describes how to do a read-only mount on CoreOS (or break compatibility with local version).
Info:
https://github.com/containers/podman/pull/11454 https://github.com/containers/podman/pull/12584
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