[XenPPC] Re: [Xen-devel] [Patch] [RFC] avoid debugger_trap when

Hi, Keir

>On 30/1/08 08:48, "Akio Takebe" <takebe_akio@xxxxxxxxxxxxxx> wrote:
>
>>> This doesn't need to be fixed on x86 -- the int3 handler will return
>>> silently if the debugger is not configured. It would be nice if the ia64
>>> handler would do the same. If that is not possible then change only ia64
>>> code and if you need to be able to probe gdbstub configuration then add a
>>> public function to do that rather than grope at internal state. The same
>>> goes for powerpc, *if* it is broken in the first place.
>>> 
>> I know the int3 hanlder return well on x86 if it is not configured.
>> But the route may be not safe. The debugger_trap is called after hypervisor
>> panic and dom0 panic. So I want to avoid the needless route for kexec/kdump.
>
>Oh no, then all bets are off. :-) We could be screwed and fail to kexec no
>matter what we do.
>
OK. I just suggested a safer way than current code.
Recently we found a bug around the trap handler on ia64,
so I worry about such a thing.
I still want to avoid the needless code on ia64.
so I'll talk in xen-ia64 ML.

Best Regards,

Akio Takebe


_______________________________________________
Xen-ppc-devel mailing list
Xen-ppc-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ppc-devel

<Prev in Thread]

Current Thread

[Next in Thread>

Previous by Date:

RE: [Xen-devel] Early test for Windows vs Linux hvm domain?, James Harper

Next by Date:

[Xen-devel] [VTD][PATCH] interrupt remapping (2nd try), Kay, Allen M

Previous by Thread:

Re: [Xen-devel] [Patch] [RFC] avoid debugger_trap when we don't expect, Keir Fraser

Next by Thread:

[Xen-devel] [PATCH] Small Fix for HVM/HAP Flags, Yosuke Iwamatsu

Indexes:

[Date] [Thread] [Top] [All Lists]