Re: [Qemu-devel] [PATCH for-1.6 V2 0/2] pvpanic: Separate pvpanic from machine type

[Paolo Bonzini]

Il 21/08/2013 10:03, Marcel Apfelbaum ha scritto:
> On Wed, 2013-08-14 at 10:02 +0300, Ronen Hod wrote:
>> How about adding a flag that tells QEMU whether to pause or reboot the guest
>> after the panic?
>> We cannot assume that we always have a management layer that takes care
>> of this.
>> One example is Microsoft's WHQL that deliberately generates a BSOD, and then
>> examines the dump files.
> After this patch the pvpanic is not part of the global devices anymore so just
> don't enable it if you want to reboot on BSOD.
> In my opinion "reboot after panic" equals "run without pvpanic device"

This is not entirely possible, since "reboot after panic" is a guest
setting while "run without pvpanic device" is a host setting (that the
guest administrator may not even have access to: Ronen's case is a good
example of this, because the "administrator" there is the WHQL harness).

However, I think this is a driver problem.  The driver should just probe
the "reboot after panic" setting and not issue the outb to the pvpanic port.

Paolo