Tom Brown wrote:
Are you sure? I've read on a few different sites / emails that people do this, mainly because the 64bit version can handle the large amounts of memory typically found in dedicated servers.
http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Virtualization-e...
"With Red Hat Virtualization, 32-bit hosts runs only 32-bit paravirtual guests. 64-bit hosts runs only 64-bit paravirtual guests. And a 64-bit full virtualization host runs 32-bit, 32-bit PAE, or 64-bit guests. A 32-bit full virtualization host runs both PAE and non-PAE full virtualization guests."
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Yes, so I can run 32bit guests on 64bit host,but with full virtualization. How do I know if a) my system supports it, and b) my kernel / OS has full virtualization enabled?
I have an intel Core 2 Duo 6750 CPU, which has Intel VT, and it's enabled in the BIOS, as can be seen here:
[root@gimbli ~]# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 Duo CPU E6750 @ 2.66GHz stepping : 11 cpu MHz : 2666.742 cache size : 4096 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl vmx smx est tm2 cx16 xtpr lahf_lm bogomips : 6669.70 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management:
processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 Duo CPU E6750 @ 2.66GHz stepping : 11 cpu MHz : 2666.742 cache size : 4096 KB physical id : 1 siblings : 1 core id : 0 cpu cores : 1 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl vmx smx est tm2 cx16 xtpr lahf_lm bogomips : 6669.70 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management:
What else do I need todo?
uname -a Linux gimbli 2.6.18-53.1.13.el5xen #1 SMP Tue Feb 12 13:33:07 EST 2008 x86_64 x86_64 x86_64 GNU/Linux