[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH for-1.6] target-mips: do not raise exceptions wh
|
From: |
Aurélien Jarno |
|
Subject: |
Re: [Qemu-devel] [PATCH for-1.6] target-mips: do not raise exceptions when accessing invalid memory |
|
Date: |
Mon, 5 Aug 2013 16:07:44 +0200 |
|
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Aug 05, 2013 at 03:53:08PM +0200, Hervé Poussineau wrote:
> Andreas Färber a écrit :
> >>>[snip]
> >>>
> >>>Have you tested Jan's patches limiting the new unassigned read value -1
> >>>to PIO?
> >>>
> >>I have tried this patches, and they don't fix the problem.
> >
> >Too bad. So what do you propose? Restoring #ifdef and using
> >empty_slot_init() have been suggested so far, any other concrete ideas?
>
> Another idea (not tested): override the
> CPUClass->do_unassigned_level on board level, to only raise IBE and
> no DBE.
> That way, right behaviour is kept in global code, and "bad" code is
> only at board level, where it can be removed later board after
> board.
The problem is that it looks like the code is not "bad". It seems that
real hardware just ignore such accesses, so this should stay forever.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net