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Re: [Qemu-devel] [PATCH] monitor: Add port write command
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] [PATCH] monitor: Add port write command |
Date: |
Tue, 14 Jul 2009 20:30:25 +0100 |
User-agent: |
KMail/1.11.4 (Linux/2.6.29-2-amd64; KDE/4.2.4; x86_64; ; ) |
> What would be really cool about this change is that we could introduce a
> new set of commands to manipulate device state. We could save/restore
> individual device state and that would allow us to dump device state via
> the monitor and to manipulate individual fields of the device state. I
> think this could be pretty useful for debugging.
I'd be reluctant to expose the savevm state to the user.
For debugging qemu I don't see it providing any real benefit over firing up
GDB and poking directly at the device directly.
For debugging the guest there is some argument for exposing the device state
(preferably via the gdb stub). However I think the savevm data tends to expose
too many internal implementation details, rather than the interesting guest
state. For most devices I'd expect the IO regions to be a better fit,
especially if you want to prevent qemu crashing when the user does invalid
writes.
Paul
- [Qemu-devel] [PATCH] monitor: Add port write command, Jan Kiszka, 2009/07/14
- Re: [Qemu-devel] [PATCH] monitor: Add port write command, Anthony Liguori, 2009/07/14
- Message not available
- Re: [Qemu-devel] [PATCH] monitor: Add port write command, Blue Swirl, 2009/07/14
- Re: [Qemu-devel] [PATCH] monitor: Add port write command,
Paul Brook <=
- Re: [Qemu-devel] [PATCH] monitor: Add port write command, Gleb Natapov, 2009/07/15
- Re: [Qemu-devel] [PATCH] monitor: Add port write command, Paul Brook, 2009/07/15
- Re: [Qemu-devel] [PATCH] monitor: Add port write command, Jan Kiszka, 2009/07/15
- Re: [Qemu-devel] [PATCH] monitor: Add port write command, Gleb Natapov, 2009/07/15
- Re: [Qemu-devel] [PATCH] monitor: Add port write command, Gleb Natapov, 2009/07/15
- Re: [Qemu-devel] [PATCH] monitor: Add port write command, Anthony Liguori, 2009/07/15
- Re: [Qemu-devel] [PATCH] monitor: Add port write command, Paul Brook, 2009/07/15