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Questions tagged [64bit]

When your question involves conversions to/from or idiosyncrasies of running on a CPU that uses 64-bit addresses.

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32bit program on 64bit: cannot execute binary file: Exec format error

I'm linking an application consisting out of two libraries in clang under WSL. The command I use looks as follows (simplified): clang -m32 -fsanitize=address -L _build/ -l:lib1.lib -l:lib2.lib -o test ...
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only 2.2GB memory is available on 64-bit Ubuntu

My laptop has 8GB memroy which can be detected in Windows. But after installing 64-bit Ubuntu 20.04.3 LTS, I check dmesg | grep Memory. It shows that the kernel only uses 2.2GB memory. [ 0.029467] ...
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1 vote
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115 views

Is there a way to chroot into 32bit system from 64bit host?

I have a 64bit Debian system running on my laptop. I wanted to chroot into a RasPiOS system (Raspberry Pi OS), but this OS is only 32 bit. When I try to chroot I get the following error: # chroot /...
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WINE "wine: could not load ntdll.so: (null)" on ArchLinux ARM

Since I'm running an ARM system, I installed Arch in a x86_64 chroot, then installed WINE. However, running wincfg gave wine: could not load ntdll.so: (null). I assumed that it meant that WINE couldn'...
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FreeBSD gets stuck when booting

So last night I downloaded the x-zipped FreeBSD version labeled disc1 from here and left my MacBook running Big-Sur on overnight. The next day, I opened up a terminal and typed qemu-system-ppc64 -...
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How to configure LFS for multilib support?

I managed to install FLS pure 64-bit, but i want to "upgrade it" so it supports 32-bit also. I don't want to build LFS from ground up again. Is there a way to install multilib support on an ...
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1 answer
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Persistence on Tinycore 12.0 virtual machine

Using Oracle Virtual Box, I have a Tinycore 12.0 virtual machine with a MacOS Big Sur 11.2.3 host. I have the most minimal Core version, no GUI, because I was having trouble with mouse tracking and I ...
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1 vote
1 answer
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grub-install: info: ... but x86_64-efi platform not available

I've installed LUbuntu on a system and it boots nicely in BIOS mode. Unfortunately I need to boot the system in EFI mode, so I booted the stick again. Made sure that it booted in EFI, mounted ...
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1 vote
1 answer
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How can we create an isolated addreess space per process without highmem in 64bit?

my question may be silly. But even after some searching, I still didn't get why highmem is unnecessary in 64bit architectures. As far as I searched, in x64bit, there is no highmem. In other words, all ...
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1 vote
1 answer
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How do I run shellcode on Linux kernel 5.8+?

The assembly code I'm trying to run is simply a syscall 60. # exit.s .intel_syntax noprefix .section .text .globl _start _start: xor rax, rax mov al, 0x3c xor rdi, rdi xor rdi, 1 syscall ...
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6 votes
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Wine cannot find Wine Gecko despite installing wine-gecko 2.47.1

As per the helpful advice given by @GAD3R at Wine64 or Wine 32 for 64-bit Lubuntu 20.04? I installed Wine 5.0 (64-bit) from the Ubuntu 20.04 repository. On running my windows application I got the ...
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2 votes
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Wine64 or Wine 32 for 64-bit Lubuntu 20.04?

I am running 64-bit Lubuntu 20.04. I have some old windows executables, which I am not sure if they are 32-bit or 64-bit. As far as I know, 64-bit Windows can run 32-bit executables. Would you ...
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  • 107
3 votes
2 answers
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How to run 32-bit (armhf) binaries on 64-bit (arm64) Debian OS on Raspberry Pi?

Original Problem I have aarch64/arm64 version of Debian on a Raspberry Pi 3 B+ (2017) or Pi 4 (using an image from here). Now I want to run 32-bit (armhf/armv7) versions of some applications/libraries ...
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Why I can't compile cpp file using gcc to be 32 bit?

linux 64 bit and while trying to compile my cpp file I receive an error would appreciate any help, thank you The gcc command gcc -m32 -g mmn12-q2.cpp -lstdc++ The error: /usr/bin/ld: skipping ...
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Detect if the computers hardware is capable for a 64bit system?

I'm more and more getting into trouble with my Debian 32 bit system, since some software such as the signal messenger are not written for 32 bit anymore. Operating System: Debian GNU/Linux bullseye/...
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2 votes
1 answer
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How come you can't enable "DEBUG_STACKOVERFLOW" when configuring a 64 bit kernel?

I'm using menuconfig to setup a linux kernel for debugging, but why does it seem that DEBUG_STACKOVERFLOW only works for 32 bit systems? As you can seen in the screenshot, enabling ...
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How can I make 32-bit program run on the 64-bit Tails OS?

Like the title, I want to make 32-bit program run on the 64-bit Tails OS, so I download a package named ia32-libs_2020.05.27_amd64.deb, then dpkg it, but it did't work, the terminal said I should ...
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2 votes
1 answer
649 views

In 64-bit linux kernel, how much memory is contiguously mapped by the kernel?

I have gone through Robert Love's Linux Kernel Development, and other sources. And everywhere it mentions that on a 32 bit x86 system the kernel owns the top 1 GB of the virtual address space, out of ...
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NetSuite 64bit ODBC Driver installation on Ubuntu 18.04 Cluster giving error:- Can't open lib '/opt/netsuite/odbcclient/lib64/ivoa27.so

Have been running around this issue since 2-3 days now with no luck. Hope someone guides me and help resolve this issue here. I am running a Python application from /home/admin/app/example.py ...
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11 votes
3 answers
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Is it worth reinstalling 64-bit Ubuntu instead of 32-bit on old hardware? [closed]

I have an old machine with an Intel D2700DC motherboard. I use it as a home server for some side projects. I have Ubuntu 32-bit installed on it, but recently figured out that its embedded D2700DC CPU ...
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1 vote
0 answers
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unable to locate package mssql-server on Raspbian

I bought a Raspberry Pi 4b to execute a bunch of scripts, updating an Azure SQL db. For which, on my laptop running Deepin, I used mssql-tools (sqlcmd and bcp). After setting it up according to ...
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1 vote
1 answer
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Which Debian architecture should I use for my Intel NUC7I3BNH?

I tried to search for the correct architecture to use for my Intel NUC7I3BNH, but I am none the wiser. Which architecture would be most appropriate - amd64 or i386?
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3 votes
2 answers
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Is it worth to install some Debian UEFI 64bit on Intel Atom [closed]

I am using for some time some Ubuntu clones, because they works on my uncommon computer setup (Intel Atom, UEFI, 64Bit). Unfortunately because of this specific architecture, I can not drop on this ...
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2 answers
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Compile NCFTP for 32 bit target

System details- Linux Kernel Release(2.6.18-164.el5), Machine Hardware Architecture(i686) I have to compile ncftp client source code on 64 bit architecture to create 32 bit binaries. I don't have ...
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64-bit version of application crashing with Wine

Disclaimer: I'm a Linux newbie and know nothing about computers. Sorry if anything below is obvious or stupid. I'm running Mint 19 (64-bit) with winehq-staging=3.21.0~bionic (version 4 seems to cause ...
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1 vote
2 answers
1k views

What's inside the kernel part of virtual memory of 64 bit linux processes?

I came upon this question : What's the use of having a kernel part in the virtual memory space of Linux processes? and based on the answer and the comments on the answer : the kernel memory ...
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Unable to install 32-bit Gtk on RedHat 7: Protected multilib versions

I'm trying to install a 32-bit version of the GTK onto a RedHat 7 Enterprise system. As the system isn't yet registered with Red Hat, I've gone ahead and used a Centos 7 repo for now. If I understand ...
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1 answer
670 views

How to configure rpmbuild to forbid installing 32 bit package in 64 bit systems?

I'm packaging software in RPM and distributing it in different packages by architecture (32bit or 64bit). Some libraries of my 32bit package have binaries that cannot be executed in 64bit systems (...
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32-bit compatability environment in Linux Mint 19? [duplicate]

I am trying to run Secondlife in Linux Mint 19. However it's a 32-bit program and I'm running a 64-bit system. How do I install a 32-bit compatibility environment in Linux Mint 19?
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2 votes
1 answer
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What are the possible options for the --arch option in debootstrap?

I need to set the arch option in debootstrap. So I did some research and read the manual. After reading the manual I see that the section on the options simply says --arch=ARCH Implying that I ...
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10 votes
2 answers
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What does it take to run 64-bit userland software on a 32-bit kernel?

On Linux and Windows, I'm used to the situation that I require a 64-bit kernel to have a system with multiarch/WoW where I can run 32-bit and 64-bit software side-by-side. And then, years ago it blew ...
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1 vote
1 answer
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What is cpu_entry_area?

The documentation of the Linux kernel describes the virtual memory map. It says: fffffe0000000000 - fffffe7fffffffff (=39 bits) cpu_entry_area mapping What is this "cpu entry area"? Is it ...
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2 votes
1 answer
4k views

Trying to resolve dependency on libz.so.1(ZLIB_1.2.9)

A friend built an EPUB converter for me that depends on lib64png16_16. lib64png16_16 has a dependency on libz.so.1(ZLIB_1.2.9)(64bit). I pulled down and compiled ZLIB_1.2.11, but it's not being ...
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2 votes
1 answer
1k views

Unable to get my PCE-AC56 working properly, but was only able to get it working and decently stable once

I've been trying to get my Asus PCE-AC56 to work with Linux Mint 18.3, which the wireless card has a Broadcom BCM4352 chip on it. I was able to at times, but it would run terrible when playing a game ...
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2 votes
1 answer
481 views

Manually set NX bit of specific PTE

On Ubuntu with kernel 4.16.7 I am writing a custom system call and, I want to set the NX bit of a specific Page Table Entry. So far I have this piece of code, where I am doing a page table walk to get ...
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1 vote
0 answers
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How can I get Linux fully installed and operational on 32 bit U/EFI & 64 bit Atom (baytrail) tablet?

How can I get Linux fully installed and operational on a 2 in 1 Trio Windows 10.1 OD Tablet? ( http://www.triotablets.us/tablets/windows-tablets/pro-book-10-1/ ) It utilizes a 32 bit U/EFI and a ...
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1 vote
2 answers
136 views

Will running a 32-bit version of ImageMagick result in half the memory usage of a 64-bit version?

I am using ImageMagick to process large TIFF images, and I am running into memory issues as the processing happens in a limited resource environment (Function Compute on Alibaba, which is almost ...
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0 answers
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VirtualBox 32 bit registers in 64 bit host

I am using Kali Linux(64 bit) on VirtualBox for programming purposes. If Debugging with gdb, there are 64-bit Registers. Is it possible to use 32-bit Registers in 64-bit mode? Because I want to work ...
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0 votes
2 answers
181 views

When did MacOS fully transition to 64-bit?

In this Arstechnica article on the release of Mac OS X snow leopard, it included this graphic: Following Snow Leopard, when did apps, Cocoa, and Carbon also transition to 64 bit? By what release was ...
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5 votes
1 answer
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32 bit apache on a 64 bit linux system [duplicate]

I am just curious: Are there any 64 bit Linux systems, which support a 32 bit version of Apache? As far as I know, a 64 bit Linux system supports only an Apache 64 bit and a 32 bit Linux system ...
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0 votes
1 answer
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Convert 64-bit ISO to 32-bit

I have a Linux bootable ISO of Blancco Drive Eraser which only supports 64-bit CPUs. How can I use this ISO with a 32-bit CPU? I want to erase the onboard eMMC on tablets. So far I've failed to find ...
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1 vote
1 answer
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Install both 32-bit and 64-bit versions of libgoogle-perftools-dev

I am on Debian Stretch and need google-perftools to profile some programs of mine. My machine is 64-bit; I build the programs for both 64 and 32-bit (using gcc -m32). I want to be able to profile both....
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1 vote
0 answers
222 views

how to install 32bit dependencies for noarch package on a 64bit box

I am on x86_64 Centos 7. I need to install a Package.noarch, but dependencies must be 32 bit. I cannot use: yum install Package.i686 since there is no such thing. Does anyone know how to tell yum ...
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3 votes
1 answer
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Can Kali installed from Kali 64-bit iso run on 32-bit platform?

So let's say I download the 64-bit version (amd64) iso from official download page, then I boot at a 64-bit pc and start the installation to my 128GB USB. Let's say we all got both 32-bit and 64-bit ...
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0 votes
1 answer
502 views

/etc/odbcinst.ini used by 64 and 32 bits applications

I have the following /etc/odbcinst.ini file [root@]# cat /etc/odbcinst.ini [FreeTDS] Description=FreeTDS odbc driver #Driver=/usr/lib/libtdsodbc.so.0 Driver=/usr/lib64/libtdsodbc.so.0 UsageCount=1 I ...
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0 votes
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ASLR on i686-pae vs amd64 kernels running 32bit processes

Is ASLR more, same or less secure for a process running on an i686-pae kernel or for a 32bit process running on an amd64 kernel?
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1 vote
1 answer
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How to find what ring a process is running on in Linux?

How can I find out which protection ring a given process is running in, and if possible can I produce a list of running processes with their respective rings? This thread gives some insight into what ...
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8 votes
5 answers
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Install 64 bit programs on a 32 bit OS with a 64 bit processor

I'm curious. Is it possible to install a 64 bit program on a 32 bit OS with a 64 bit processor? I'm running Linux on a raspberry pi 3 and I try to install a newer version of MongoDB: armv7l GNU/...
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3 votes
1 answer
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How can I find 32-bit binaries?

I've just upgraded one of my Gentoo systems from 32-bit to 64-bit. Now, I need to find any residual 32-bit binaries (mostly user-installed) so I can either re-compile them as 64-bit or install the 32-...
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2 votes
0 answers
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not all RAM recognised (on 64bit CPU)

I've installed Ubuntu server 16.04 (64bit) on a Dell fx160 thin client (has an atom 230 processor). This device has two sticks of ram in it, 2 GB each. When I execute lshw I see that it correctly ...
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