Re: [Xen-ia64-devel] [PATCH] [RFC] [TAKE3] P2M/VP (incomplete) patches

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

Hi Aron.


On Thu, Mar 30, 2006 at 11:33:42AM -0500, Aron Griffis wrote:

> (XEN) domain mem: type=11, attr=0x8000000000000001, 
> range=[0x00000000fed00000-0x0000000100000000) (19MB)
> 
> At this point, with no further messages, the machine reboots...


dom_fw_init() @ dom_fw.c
            efi_memmap_walk_type(EFI_MEMORY_MAPPED_IO,
                                 dom_fw_dom0_passthrough, &arg);

least xen reaches here.
But I'm not sure that xen crashes following line.
            efi_memmap_walk_type(EFI_MEMORY_MAPPED_IO,
                                 dom_fw_dom0_passthrough, &arg);

Although I don't remember clearly when a serial console is turned
into asynchronous mode, I suspect that the console was working
in asynchronous mode so that the log doesn't show accurate reboot point.
Could you try again with the following patch (it would be convenient
to add new xen boot options to do it) and track down more?

diff -r 143db068c9f1 -r 72d6bf09bb94 xen/drivers/char/ns16550.c
--- a/xen/drivers/char/ns16550.c        Fri Mar 24 17:58:55 2006 +0900
+++ b/xen/drivers/char/ns16550.c        Fri Mar 24 17:58:56 2006 +0900
@@ -206,7 +206,7 @@ static void ns16550_init_postirq(struct 
     if ( uart->irq < 0 )
         return;
 
-    serial_async_transmit(port);
+    //serial_async_transmit(port);
 
     if ( uart->irq == 0 )
     {


        
-- 
yamahata

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