02.06.2010 09:44, Neo Jia wrote:
On Wed, Mar 10, 2010 at 2:12 PM, Michael Tokarev<mjt@xxxxxxxxxx> wrote:
[]
I use 32bit kvm on 64bit kernel since the day one. Nothing of interest
since that, everything just works.
I just came back to this thread because I am seeing that I can't run
VISTA 64-bit inside 64/32 mode, which will crash with bugcheck 0x5D.
Is this a known issue?
I haven't seen it myself, but I never tried vista. Win7 64bit installs
and works just fine. STOP 0x0000005D, according to M$, means "there is
a processor present that is not supported". I'd say try to experiment
with different -cpu options. Also see if it works in native 64bit mode.
Recently (this week) I come across a situation when something does not
work in 64/32 mode. Namely it is linux aio (see the other thread in
kvm@ a few days back) - but this is not due to kvm but due to other
kernel subsystem (in this case aio) which lacks proper compat handlers
in place.
Could you tell me more about the AIO issue? Will this will slow down
the guest if it does a lot I/O? Will setting up coalescing help?
You can search it yourself. In a nutshell it's an optimisation in kvm
since version 0.12 to let raw devices be used a bit more efficient.
/mjt
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