Linked Questions

3
votes
2answers
6k views

How do I find out if my computer has PAE using Linux? [duplicate]

Possible Duplicate: What do the flags in /proc/cpuinfo mean? I tried installing CentOS 6.3 on my computer only to see a complaint that my computer doesn't have PAE. I am not sure if my computer ...
19
votes
5answers
27k views

How do I know that my CPU supports 64bit operating systems under Linux?

How can I find out that my CPU supports 64bit operating systems under Linux, e.g.: Ubuntu, Fedora?
15
votes
4answers
15k views

32-bit, 64-bit CPU op-mode on Linux

I'm confused. Running Fedora Linux, lscpu yields: Architecture: i686 CPU op-mode(s): 32-bit, 64-bit ... But when I try to install a 64-bit program (Chrome) I get error like: ...
21
votes
2answers
6k views

What does the “bugs” section of /proc/cpuinfo actually show?

On a Debian Stretch and testing/Buster system with a current kernel and installed microcode I still see meltdown and spectre listed as bugs in /proc/cpuinfo. However, running the spectre-meltdown-...
5
votes
2answers
4k views

How to use a 64-bit CPU in KVM?

According to tests the Mac Mini 3,1 CPU is 64-bit (grep -q "^flags.*\blm\b" /proc/cpuinfo) and supports Intel virtualization extensions (grep -q "^flags.*\bvmx\b" /proc/cpuinfo). However, after ...
5
votes
4answers
2k views

Does Arch Linux work on i386 cpu architecture

Does Arch Linux work on my i386 cpu. I read on its website that it's optimized for i686, does it mean Arch Linux won't work on i386. By the way, I don't want to compile it, I want to use the ...
10
votes
1answer
2k views

How to determine CPU features on PowerPC and Power 8 (and above)?

We can examine /proc/cpuinfo on Intel and ARM machines to learn cpu features, like AES and SHA. I need to do the same for PowerPC under both AIX and Linux. Testing with Linux is shown below. The ...
1
vote
0answers
322 views

CPU MSR dumper tool

I'm looking for a linux tool similar to a cpuid dumper but with a capability to read all of a processor's possible model-specific registers's and outputting them. Does such a tool exist? I'm hoping ...
4
votes
1answer
164 views

Find out if CPU supports dynamic speed setting

I need to find out in my script if a (potentially legacy) CPU supports dynamic speed setting, and eventually get value of maximum and current speed. What makes it more complicated is that I need to ...
2
votes
1answer
61 views

Why do I get different cpu flags in /proc/cpuinfo between CentOS 6 and CentOS 7?

CentOS 6.9 showed the following CPU flags in /proc/cpuinfo: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm ...