QEMU VS Bitwarden

My most-wanted QEMU feature: https://github.com/qemu/qemu/commit/a2260983c6553

Using `gic-version=3` on macOS you can now use more than 8 cores on ARM chips.

A better solution is just to write a plain ass shell script that tests if various C snippets compile.

https://github.com/oilshell/oil/blob/master/configure

https://github.com/oilshell/oil/blob/master/build/detect-pwe...

Not an unholy mix of m4, shell, and C, all in the same file.

---

These are the same style as a the configure scripts that Fabrice Bellard wrote for tcc and QEMU.

They are plain ass shell scripts, because he actually understands the code he writes.

https://github.com/qemu/qemu/blob/master/configure

https://github.com/TinyCC/tinycc/blob/mob/configure

OCaml’s configure script is also “normal”.

You don’t have to copy and paste thousands of lines of GNU stuff that you don’t understand.

(copy of lobste.rs comment)

Related:

A fast Pascal (Delphi) WebAssembly interpreter:

https://github.com/marat1961/wasm

WASM-4:

https://github.com/aduros/wasm4

Curated list of awesome things regarding WebAssembly (wasm) ecosystem:

https://github.com/mbasso/awesome-wasm

Also, it would be nice if there was a WASM (soft) CPU for QEMU, which (if it existed!) would go here:

https://github.com/qemu/qemu/tree/master/target

> architectural registers are always updated

In tiny code, the guest registers (global TCG variables) are stored in the host's registers until you either call an helper which can access the CPU state or you return (`git grep la_global_sync`). This is the reason why QEMU is not so terribly slow.

But after a check, this also happens when you access the guest memory address space! https://github.com/qemu/qemu/blob/master/include/tcg/tcg-opc... (TCG_OPF_SIDE_EFFECTS is what matters)

But still, in the end, it's the same problem. What QEMU does, can be done in LLVM too. You could probably be more efficient in LLVM by using the exception handling mechanism (invoke and friends) to only serialize back to memory when there's an actual exception, at the cost of higher register pressure. More or less what we do here: https://rev.ng/downloads/bar-2019-paper.pdf

Um, in case you don't know, UTM (based on QEMU) is out for quite a while.

Some of these tools include Oracle VM VirtualBox (that I've used since before the acquisition of Sun Microsystems by Oracle), VMWare Workstation Player, and QEMU, but last year, I found out about Multipass.

For C/C++ projects that use meson as the build system, there is an excellent way to manage dependencies:

https://mesonbuild.com/Wrapdb-projects.html

https://mesonbuild.com/Wrap-dependency-system-manual.html

meson will download and build the libraries automatically and give you a variable which you pass as a regular dependency into the built target:

https://github.com/qemu/qemu/tree/005ad32358f12fe9313a4a0191...

https://github.com/harfbuzz/harfbuzz/tree/main/subprojects

https://github.com/harfbuzz/harfbuzz/blob/37457412b3212463c5...

Or, if you're using proper operating systems, they're managed by the usual package manager, just like everything else.

For all the users of the Linux platform, QEMU is the VM that you should go for. This software comes without any price tag and works as an emulator of various machines with utmost ease and completion; the software uses dynamic translations to emulate hardware peripherals and enhances its overall performance. If you are using QEMU as a virtualizer, then it will function exactly like the host system (provided you have the right set of hardware).

In this tutorial, we set up macOS and Windows virtual machines on UTM, a macOS application that provides a GUI wrapper for QEMU, a powerful open-source emulator and virtualizer. UTM allows you to easily manage and run virtual machines without memorizing complex commands. It also has special handling for macOS, making it simpler to install compared to other virtual machine software.

For passwords and 2FA I use Bitwarden in combination with a self-hosted Vaultwarden service (for imcreased security and use of pro features for free).

First it's good to use a password manager, however it's not a good idea to use the one built into your browser. I would suggest switching to BitWarden or similar (not LastPass).

I just noticed today when relogging in on Bitwarden (I couldn't sync my vault) that it said "Logged in as [email] on __$2__" instead of "Logged in as [email] on bitwarden.com". I don't know why or how that happened, and I have no idea what it means. Did I screw up somehow? Just to be clear, I did login and just after I logged in my brain realized that it said "__$2__" instead of what it should say.

bitwarden:~$ sudo ./bitwarden.sh updateself _ _ _ _ | |__ (_) |___ ____ _ _ __ __| | ___ _ __ | '_ \| | __\ \ /\ / / _` | '__/ _` |/ _ \ '_ \ | |_) | | |_ \ V V / (_| | | | (_| | __/ | | | |_.__/|_|\__| \_/\_/ \__,_|_| \__,_|\___|_| |_| Open source password management solutions Copyright 2015-2023, 8bit Solutions LLC https://bitwarden.com, https://github.com/bitwarden =================================================== bitwarden.sh version 2023.10.3 Docker version 24.0.7, build afdd53b Docker Compose version v2.21.0 Updated self. bitwarden:~$ sudo ./bitwarden.sh update _ _ _ _ | |__ (_) |___ ____ _ _ __ __| | ___ _ __ | '_ \| | __\ \ /\ / / _` | '__/ _` |/ _ \ '_ \ | |_) | | |_ \ V V / (_| | | | (_| | __/ | | | |_.__/|_|\__| \_/\_/ \__,_|_| \__,_|\___|_| |_| Open source password management solutions Copyright 2015-2023, 8bit Solutions LLC https://bitwarden.com, https://github.com/bitwarden =================================================== bitwarden.sh version 2023.10.3 Docker version 24.0.7, build afdd53b Docker Compose version v2.21.0 Update not needed bitwarden:~$

Bitwarden (version 8588): A secure and free password manager for all of your devices.

I would also recommend the use of a password manager such as Proton Pass, BitWarden or 1Password if your looking for a more premium solution.

Use a password manager if you do not already and have it generate unique passwords for every website. Bitwarden is one of the best. You should NEVER reuse passwords and should always use unique passwords. It may be inconvenient at first but a password manager like Bitwarden really does make it a whole lot more convenient. Your e-mail especially should have its own unique password. You should also use two-factor authentication on any website that offers it. If you do not have a good AV on your computers, Bitdefender and Kaspersky both offer free options. The website https://haveibeenpwned.com/ is a good place to check if your credentials have been in a data breach.