Old hypercall call method still still available with
options XEN_NO_HYPERCALLPAGE
but this is disabled by default (xen-3.0.2-2 supports hypercall call page
just fine).
While there add a VIRT_BASE= string in __xen_guest section; from
Bastian Blank on port-xen@.
- kernel (both dom0 and domU) boot, console is functionnal and it can starts
software from a ramdisk
- there is no driver front-end expect console for domU yet.
- dom0 can probe devices and ex(4) work when Xen3 is booted without acpi
and apic support. But the on-board IDE doens't get interrupts.
The PCI code still needs work (it's hardcoded to mode 1). Some of this
code should be shared with ../x86
The physical insterrupt code needs to get MPBIOS and ACPI support, and
do interrupt routing to properly interract with Xen.
To enable Xen-3.0 support, add
options XEN3
to your kernel config file (this will disable Xen2 support)
Changes affecting Xen-2.0 support (no functionnal changes intended):
- get more constants from genassym for assembly code
- remove some unneeded registers move from start()
- map the shared info page from start(), and remove the pte = 0xffffffff hack
- vector.S: in hypervisor_callback() make sure %esi points to
HYPERVISOR_shared_info before accessing the info page. Remplace some
hand-written assembly with the equivalent macro defined in frameasm.h
- more debug code, dissabled by default.
while here added my copyright on some files I worked on in 2005.
- sort the ih_evt_handler list by IPL, higher first. Otherwise some handlers
would have been delayed, event if they could run at the current IPL.
- As ih_evt_handler is sorted, remove IPLs that have been processed for
an event when calling hypervisor_set_ipending()
- In hypervisor_set_ipending(), enter the event in ipl_evt_mask only
for the lowest IPL. As deffered IPLs are processed high to low,
this ensure that hypervisor_enable_event() will be called only when all
callbacks have been called for an event. We don't need the evtch_maskcount[]
counters any more.
Thanks to YAMAMOTO Takashi for ideas and feedback.
including soft interrupt, and this is way too low in some use (lots of domains,
or domains with lots of xennet, or even hardware with lots of devices at
different interrupts).
Based on idea from YAMAMOTO Takashi, keep one list of handler per-event and
one per-IPL (so the same handler is now in 2 lists). In the common case were
an event is received at low IPL, we can call the handlers quickly (there
is usually only one handler per event, unless the event is mapped to a
physical interrupt and this interrupt is shared by different devices).
Deffered events and software interrupts are handled by a bitmask (as before)
with one bit per IPL. When one IPL has an event pending all handlers for
this IPL will be called.
With this change, it is now possible to have all the 1024 events active.
While here, handle debug event in a special way: the handler is always called,
regardless of the current IPL. Make the handler print usefull informations
about events and IPL states.
Also remove code not used on Xen in files inherited from the x86 port.
clockframe -> intrframe, but that is included too late, because this
file includes systm.h and it is in the path of including systm.h. Fix
it by not including <systm.h>; it was only needed for the panic() calls
which I have disabled, since they look more like debugging calls to me.
Also add forward struct declaration for trapframe.
by 0x100000 (above the I/O Memory "hole") leaving all physical addresses
below unused, don't perform phys<->mach mapping for addresses below 0x100000
or beyond the real hardware's physical memory.
-> /dev/mem works now as expected and X works in domain0.
