On Oct 16, 2013, at 9:02 AM, Eric Blake <eblake@xxxxxxxxxx> wrote: > On 10/16/2013 08:12 AM, Chris Murphy wrote: >> Is a 64bit host expected to support running a 32bit guest OS in qemu/kvm? Or do archs need to match? > > 64-bit guets on 64-bit host exposing a 64-bit environment - works just > fine; supported, uses hardware acceleration. > > 32-bit guest on 64-bit host exposing only a 32-bit environment - works > just fine; supported, uses hardware acceleration. > > 32-bit guest on 64-bit host exposing a 64-bit environment - works just > fine; supported, uses hardware acceleration. > > 32-bit guest on 32-bit host (necessarily exposing a 32-bit environment) > - works just fine; supported, uses hardware acceleration (but gets less > testing, as few people run virt hosts in 32-bit mode). > > No support for running a 64-bit guest on a 32-bit host (hardware just > doesn't expose enough memory). OK thanks. Followups are: Q1: Where in virt-manager is the setting to expose 32bit/64bit environment? I don't see this in Processor. I do see Architecture: x86_64 in Overview>Hypervisor Details but I have no way to change it. Q2: Should this test case: https://fedoraproject.org/wiki/QA:Testcase_Install_to_Current_KVM Cover all of the above combinations, minus 64-bit guest on 32-bit host? Or is 64/64, and either 64/32 or 32/32 sufficient? Chris Murphy -- test mailing list test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/test
