#x86_64

https://www.youtube.com/watch?v=tck1qZvtw5k

Scopriamo le istruzioni aritmetiche dei processori x86.
#x86 #assembly #x86_64 #x86assembly

peter hessler @openbsd

#AskFedi

I want to make an #OpenBSD #x86_64 virtual machine with #QEMU, with as few legacy devices as possible. No ISA bus is particularly interesting :D.

Has anyone else done this? Do you have command lines to share? Thanks!

Mille e Una Avventura

https://www.youtube.com/watch?v=p6tMzcit3T8

Scopriamo le operazioni logiche dei processori x86.
#x86 #assembly #x86_64 #x86assembly

Emulating x86 on Apple’s AARCH64 x64 Emulator - You might know [Evan Martin] as the developer of retrowin32. It’s a Windows and x8... - https://hackaday.com/2023/08/31/emulating-x86-on-apples-aarch64-x64-emulator/ #aarch64 #x86-64 #x86_64 #arm #x64 #x86

x86 instruction set extensions (partial list):

x86-64 / AMD64
RTM
HLE
TSX
CET
MMX
MMX+
SSE
SSE2
SSE3
SSE4.1
SSE4.2
SSE4a
SGX
FMA3
AVX
AVX2
AVX-512
AES
SHA
AMD-V
Intel VT-x

It's Ridiculous Instruction Set Computing.

#RISC #x86 #x86_64 #AMD64 #CISC #CPU #microcode

Jun Nergahak 🌺🌺🌺

#Linux #Fedora #FedoraServer #x86_64

I've finished the basic part of configuring my server on Fedora. All that remains is to make it externally accessible, I intend to configure a domain on it as well.

Jun Nergahak 🌺🌺🌺

#Linux #Fedora #FedoraServer #x86_64

Yesterday I installed Fedora Server 38 for x86_64, QEMU/KVM allows running it with great performance, as if it were running directly on the hardware, but when I send the system to shutdown (I used the "halt" command in the console), it doesn't appear no more messages, the screen is completely black and does not turn off. Forced me to force shutdown by Virt Manager.

I would like to understand this, if anyone knows and can help me, I appreciate it.

⟨Joe⟩ /ˈɔɪklɪd/

Wrote a minimal UEFI bootloader for my OS project—because #GRUB is a monstrosity—initially with the intention of supporting only #x86_64. After getting it working, I noticed that there was almost no x86_64-specific code. Because I'm using #Zig all I had to do to recompile for #arm64 is modify a single line in build.zig. No fiddling with cross compilers or fucking with sysroots.

Lo and behold it worked perfectly (other than the fact that I didn't recompile my dummy kernel.elf for #aarch64). Zig might just have the most pleasant low level development and cross-compilation workflow I've ever worked with.

Mille e Una Avventura

https://www.youtube.com/watch?v=Jbnwx28AGSA

Scopriamo le istruzioni di trasferimento dei processori x86 e, in particolare, come sono cambiate dai tempi dei 486.
#x86 #assembly #x86_64 #x86assembly

🛡 H3lium@infosec.exchange/:~# :blinking_cursor:

#bootstrappable
#BootstrappableBuilds
#ReproducibleBuilds

🔒 Red Hat Security Advisory 🔒

📦 Product: OpenShift Virtualization
🆔 Advisory ID: RHSA-2023:4420-01
📅 Issue date: 2023-08-01
🔍 CVE Names: CVE-2023-24540

📜 Summary:
Red Hat OpenShift Virtualization release 4.12.5 is now available, featuring updates to packages and images that address various bugs and provide enhancements.

🛡️ Security Impact:
This update has been classified as "Important" by Red Hat Product Security. For detailed severity ratings, please check the Common Vulnerability Scoring System (CVSS) base score for each vulnerability using the provided CVE link(s) in the References section.

🎯 Relevant releases/architectures:
#CNV4 #RHEL7 #x86_64 #CNV4 #RHEL8 #x86_64

📝 Description:
OpenShift Virtualization is Red Hat's virtualization solution tailored for Red Hat OpenShift Container Platform.

This advisory contains OpenShift Virtualization 4.12.5 RPMs.

🔧 Security Fix(es):
CVE-2023-24540: golang: html/template: improper handling of JavaScript whitespace
For more information on the security issue(s), including the impact, CVSS score, acknowledgments, and other related details, please refer to the CVE page(s) listed in the References section.

💡 Solution:
To apply this update, including the changes described in this advisory, please follow the instructions at:
🔗 https://access.redhat.com/articles/11258

🐞 Bugs fixed:

2196027 - CVE-2023-24540 golang: html/template: improper handling of JavaScript whitespace
2227593 - Tracker for 4.12.5 RPM

📦 Package List:
CNV 4.12 for RHEL 7:
Source:

kubevirt-4.12.5-1189.el7.src.rpm

x86_64:

kubevirt-virtctl-4.12.5-1189.el7.x86_64.rpm
kubevirt-virtctl-redistributable-4.12.5-1189.el7.x86_64.rpm

CNV 4.12 for RHEL 8:
Source:

kubevirt-4.12.5-1189.el8.src.rpm

x86_64:

kubevirt-virtctl-4.12.5-1189.el8.x86_64.rpm
kubevirt-virtctl-redistributable-4.12.5-1189.el8.x86_64.rpm

🔗 References:
CVE-2023-24540: https://access.redhat.com/security/cve/CVE-2023-24540

Andrius Štikonas

5 months ago

Spent part of my #RechageDay at #AMD looking at bootstrapping #TinyCC 0.9.26 from #GNUMes on #x86_64 architecture. And thanks to #Mes mantainer @janneke for his help with debugging various issues. We can now build initial #tcc binary and it can even run some simple commands such as --help or -vv.

Unfortunately, we still hit some critical bugs when trying to use this tcc binary to rebuild itself but hopefully we are not far now.

Ку :emojione_bear:🇧🇬🇪🇺

5 months ago

In fact my issues with it fall in three categories.

The relevant one is things still missing in #asahi itself:
- built-in #audio being disabled due to the overdrive protection stuff still missing (which is kinda meh for me anyway, I almost always use headphones)
- no #thunderbolt support, which is the only serious problem as far as I'm concerned, cause I like my keyboard and big monitor setup at home and really wish I could use it with asahi
- #suspending the laptop doesn't seem to work properly, since it keeps draining a bunch of power in that state, even though it's still less than if not suspended

There are a bunch of tiny annoyances that come from #sway and #wayland
- some tools I use on #i3/#X11 just don't have adequate analogies. It's mostly simple stuff like fbxkb, but it still bugs me.
- #xwayland does lead to some things not working quite as expected, e.g. 1password's global shortcut actually doesn't work, so I need to go and click on it in the system tray to open it. I assume the underlying cause of this is also why the firefox 1password extension acts as a standalone thing, as if I don't have 1password installed separately.
- speaking of the system tray, it seems to be a serious hit and miss w.r.t. what will and what won't work
- the #clipboard is different. I have developed a lot of habbits around using clipboard and selection on X11 and the fact that that doesn't reliably map onto anything in wayland kinda bugs me, but I realize this is mostly a very me problem.

And then there's the fact that a bunch of stuff seems to not be distributed as an #aarch64 package. Especialluly packages on #AUR will almost always be marked as #x86_64 exclusive, even though downloading and building from source pretty much always works. I'm guessing that will be slowly getting better over time, especially if more non-apple aarch64 laptops start going more mainstream.

6 months ago

Learning x86_64 Assembly By Building A GUI From Scratch - Some professional coders are absolutely adamant that learning to program in assemb... - https://hackaday.com/2023/06/18/learning-x86_64-assembly-by-building-a-gui-from-scratch/ #softwarehacks #assembly #xwindows #x86_64 #gui #x11

Roger Lovato :scbr:

6 months ago

Com o preço dos #RaspberryPi e outras alternativas #ARM #singleboard, está compensando muito mais comprar #minipcs #x86_64.

Electronic Eel

6 months ago

TIL: Intel disabled the x86_64 v3 Microarchitecture level even on CPUs sold last year.

Previously I thought x86_64 v3 was implemented on CPUs since Haswell, that is about 2014. But now I found out the hard way (that is SIGILL) that they fused off instruction features like FMA and AVX even in Comet Lake (last 14nm generation) when the processor was branded as "Pentium" or "Celeron" (and not "Core").

That means it will take quite some time until distros can reasonably begin to ship binaries with x86_64 v3 as minimum requirement.

At least it seems they have now stopped this bullshit with Alder Lake.

#x86_64 #intel

https://filippo.io/linux-syscall-table/

7 months ago

Intel Suggests Dropping Everything But 64-Bit From X86 With Its X86-S Proposal - In a move that has a significant part of the internet flashing back to the innocen... - https://hackaday.com/2023/05/21/intel-suggests-dropping-everything-but-64-bit-from-x86-with-its-x86-s-proposal/ #computerhacks #x86_64 #intel #x86

signalblur 📡🛸:verified:

8 months ago

Searchable #Linux #Syscall Table for #x86 and #x86_64

@filippo is a wonderful follow. I’m grateful for him making this.

Also for some reason seeing it laid out like this made me think of them like they are the equivalent of the Linux Rules of Acquisition

#StarTrek #Ferengi #RulesOfAcquisition #Tech #DFIR #Forensics #LinuxForensics

Joseph Holsten

8 months ago

Of course valgrind doesn’t support #FreeBSD #aarch64. Guess I’ll start memchecking traditional #vi over on #Linux #x86_64, then come back later.

Jon Stewart

9 months ago

What resources do people recommend for learning x86_64 and arm64 assembly? I was pretty comfortable with MIPS and 68k for those couple of semesters in college. Would love to know about modern tooling, too.

Eventual use cases: confirming proper optimization of C++ routines by the compiler (Godbolting?) and writing a few routines by hand.

#x86_64 #arm64 #assembly

Christoph Miksche

9 months ago

I am thinking if I should rename the 64-bit versions of @chapati #autoupdate.

Currently it's named #x86_64 but I think many people would understand #AMD64 better? What do you think?

Ivan Enderlin 🦀

9 months ago

iced, https://github.com/icedland/iced.

A fast and correct x86/x64 disassembler, assembler, decoder, encoder for Rust, .NET, Java, Python and Lua.

#disassembler #assembler #x86 #x86_64

(((Jann Gobble)))🏳️‍🌈

10 months ago

Just finished RE-compiling #FFMPEG static binary from my bash script I used to compile #macOS #X86_64 & #arm64. I thought I had it solved yesterday. Ended up it worked on X86_64 to compile in #HDR10Plus and all relevant CPU optimizations, but something I did messed up ARM64’s compile - so it showed as no #NEON optimizations AND only 32-bit in the x265 section of ffmpeg!

Wha’??? 👀

lorddimwit: not a typewriter

11 months ago

If you don’t say “ooo big stretch” every time you enable long mode on #x86_64, you’re a psychopath.

#assembly

Benjamin Carr, Ph.D. 👨🏻‍💻🧬

11 months ago

#AlmaLinux, #CentOSStream, #ClearLinux, #Debian, #Fedora & #Ubuntu Shoot out On #AMD 4th Gen #EPYC Genoa
Winner? #Intel's Clear with its #AVX512 and other optimizations and extensive tuning for optimal #x86_64 performance paid off for @AMD@twitter.com #EPYCGenoa
https://bit.ly/3WIpLWF

TheOuterLinux ✅

https://archive.org/details/ES-DE-TOL

I took the AppImage of EmulationStation Desktop Edition for x86_64 apart and added emulators if anyone is interested. I originally was just making this for myself, but decided to share it. No restricted ROM, BIOS files, or games are included.

#emulation #retro #gaming #linux #appimage #64-bit #x86_64

Hélio Costa

Every now and then, I get hit by an urge to buy a #x86_64 notebook to install a #linux distro and set up as a second #softwaredev machine. Is this itch happen to you too?

This year I’ve completed a decade using #OSX #macOS machines.

Farooq Karimi Zadeh

#asm #assembly #x86 #x86_64 #linux #debugging #programming #segfault #segmention_fault

I am trying to calculate factorial of 30 using x86_64 assembly on Linux. Here's my code:

```
.global _start

.text
_start:
mov %RCX, 1 # counter
mov %RAX, 1 # factorial result
loop:
mul %RCX
inc %RCX
cmp %RCX, n
jle loop

.data
n: .byte 30

```

I am converting it using these two commands:

```
as file.s
ldd file.s -o a
```

However when running the executable `a`, segmention fault is raised. checking with gdb it seems that it is raised right at the first instruction after `_start`. Where am I wrong?

FaustZero1 🇮🇩

Any suggestion about Gentoo Linux?
I know Gentoo, but haven't used it that much.

Is Gentoo can be reliable for low spec's machine as long the program code isn't sucks right?

I want to use an old machine (2C/2T CPU with 3GB of RAM) to become reliable in my own production but still keep relevant to the newest certain software that I use.

I'm, okay to wait for the compilation as long it doesn't take for hours of time

#Gentoo #Linux #suckless #lowtechhardware #x86 #x86_64 #i686 #Funtoo

Klaus Alexander Seiﬆrup

#Rulex is a new, portable regular expression language written in #rustlang:

🔗 https://rulex-rs.github.io/

Now installable from #AUR:

🔗 https://aur.archlinux.org/packages/rulex-rs-bin

/cc [ #regex | :archlinux: #ArchLinux | :linux: #Linux #x86_64 ]

AVX-512: When The Bits Really Count - For the majority of workloads, fiddling with assembly instructions isn’t worth it.... - https://hackaday.com/2022/05/09/avx-512-when-the-bits-really-count/ #softwaredevelopment #benchmarking #optimization #assembly #avx-512 #x86_64 #intel #simd #x86

Boiling Steam

ToaruOS 2.0, a new (hobby) x86_64 OS: https://github.com/klange/toaruos/releases/tag/v2.0.0 #foss #os #toaruos #x86_64 #original #desktop

Boiling Steam

Box64: The Beginnings of the ARM Gaming Scene: https://boilingsteam.com/box64-witness-the-birth-of-the-arm-gaming-scene/ #linux #linuxgaming #arm #box64 #gaming #x86_64 #translation #performance

Boiling Steam

Box64: Witness the Birth of the ARM Gaming Scene: https://boilingsteam.com/box64-witness-the-birth-of-the-arm-gaming-scene/ #linux #linuxgaming #box64 #arm64 #x86_64 #translation #FOSS

novi's moved, check bio