Release announcement for CentOS-5.5 i386 and x86_64

[DarkF@der]

Im messing around with KVM on C5.5 right now. Shortcut to see if your system supports hardware virtualization:

egrep '(vmx|svm)' --color=always /proc/cpuinfo

what that means ?
when i use your command i got this

Code: Select all

flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm

[DarkF@der]

Im messing around with KVM on C5.5 right now. Shortcut to see if your system supports hardware virtualization:

egrep '(vmx|svm)' --color=always /proc/cpuinfo

when i use your command i got this

flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm

[scott]

Excellent news, that means your cpu supports it and you can use KVM virtualization on the server.

[breun]

I did the update everything seems to be fine but do i need a reboot?

You only ever need to reboot to change into another kernel. CentOS 5.5 comes with an updated kernel, but if you're using the ASL kernel for instance, that one won't get installed. Usually you can just check if 'uname -a' says you're running the most recent kernel installed according to 'rpm -qa | grep kernel | sort'.

[AntiochInteractive]

When installing ASL on CentOS 5.5 - the install gives a bunch of warning messages -- I assume this is what we're discussing. Does ASL then just use the CentOS 5.5 Kernel, or does it use the ASL kernel? (I couldn't discern what you meant in the previous message)

[breun]

When installing ASL on CentOS 5.5 - the install gives a bunch of warning messages -- I assume this is what we're discussing.

What warning messages?

Does ASL then just use the CentOS 5.5 Kernel, or does it use the ASL kernel? (I couldn't discern what you meant in the previous message)

ASL doesn't use the CentOS kernel by default. The CentOS 5.5 kernel is currently 2.6.18-194.3.1.el5 while the current ASL kernel is 2.6.32.8-1.art. If you have the ASL kernel installed yum won't see the new CentOS kernel as an update, so it won't get installed.