Hello all,
[My apologies if this question is misplaced here, I initially posted it to
xen-users but was told there that it might be better suited for xen-devel..]
I am just setting up Xen test/development environment and I have successfully
installed xen 3.0.2 on a dual celeron system. Linux in dom0 works fine. Now,
I would like to play with the mini-os (my ultimate goal is to implement a
small RTOS as guest in Xen, so mini-os looks like a good starting point).
However, I can't seem to get it to run as (I think) it should: It boots up,
but as far as I understand the source code and the README, it should
continue by printing the current time in regular intervals, which it does
not. Here is the output I receive:
----------------------------------
Xen Minimal OS!
start_info: c001d000
nr_pages: 8192 shared_inf: 00be3000
pt_base: c0020000 mod_start: 0x0
mod_len: 0
flags: 0x0
cmd_line:
MM: Init
_text: c0000000
_etext: c0009577
_edata: c000a604
stack start: c0011e40
_end: c00142a4
start_pfn: 25
max_pfn: 2000
Mapping memory range 0xc0400000 - 0xc2000000
MM: Initialise page allocator for c002c000(2c000)-c2000000(2000000)
MM: done
Initialising timer interface
Initialising console ... done.
Initialising scheduler, idle_thread 00000000
Thread "Idle": pointer: 0xc002d00c, stack: 0xc002e000
Thread "init_xs": pointer: 0xc002d034, stack: 0xc0030000
Thread "xenstore": pointer: 0xc002d05c, stack: 0xc0032000
Xenbus initialised.
Thread "init_xs" exited.
--------------------------------
I have inserted some debug printk's into do_hypervisor_callback() to see
whether any callbacks are made at all. According to this, a vtimer interrupt
does happen, but only every 10 seconds, which -as I guess- is far less
frequent than it should be (the timer handler prints out the current time for
every 1000th timer event, so it would take almost three hours before the
first message is printed). Also interesting is that whenever I hit a key on
the console, a timer event is almost always pending along along with the
console event. It looks like the timer event bit is properly set by Xen, but
the callback handler is not invoked.
Does anyone have an idea what is wrong?
Cheers
Rob
P.S.: BTW, I have also tried to use the mini-os in from xen-untested. That one
looks very different, but, alas, it does not even compile...
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