From: Peter Maydell <peter.maydell@linaro.org>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Avi Kivity <avi@redhat.com>, qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [RFC] Memory API
Date: Wed, 18 May 2011 16:17:32 +0100 [thread overview]
Message-ID: <BANLkTimYH3-FkVQfdOXO+at2G0NhX-UaVg@mail.gmail.com> (raw)
In-Reply-To: <4DD3E1B3.3020405@siemens.com>
On 18 May 2011 16:11, Jan Kiszka <jan.kiszka@siemens.com> wrote:
> On 2011-05-18 16:36, Avi Kivity wrote:
>> There is nothing we can do with a return code. You can't fail an mmio
>> that causes overlapping physical memory map.
>
> We must fail such requests to make progress with the API. That may
> happen either on caller side or in cpu_register_memory_region itself
> (hwerror). Otherwise the new API will just be a shiny new facade for on
> old and still fragile building.
If we don't allow overlapping regions, then how do you implement
things like "on startup board maps ROM into lower addresses
over top of devices, but later it is unmapped and you can see
the underlying devices" ? (You can't currently do this AFAIK,
and it would be nice if the new API supported it.)
-- PMM
next prev parent reply other threads:[~2011-05-18 15:17 UTC|newest]
Thread overview: 187+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-18 13:12 [Qemu-devel] [RFC] Memory API Avi Kivity
2011-05-18 14:05 ` Jan Kiszka
2011-05-18 14:36 ` Avi Kivity
2011-05-18 15:11 ` Jan Kiszka
2011-05-18 15:17 ` Peter Maydell [this message]
2011-05-18 15:30 ` Jan Kiszka
2011-05-18 19:10 ` Anthony Liguori
2011-05-18 19:27 ` Jan Kiszka
2011-05-18 19:34 ` Anthony Liguori
2011-05-18 20:02 ` Alex Williamson
2011-05-18 20:11 ` Jan Kiszka
2011-05-18 20:13 ` Alex Williamson
2011-05-18 20:07 ` Jan Kiszka
2011-05-18 20:41 ` Anthony Liguori
2011-05-19 8:26 ` Gleb Natapov
2011-05-19 8:30 ` Jan Kiszka
2011-05-19 8:44 ` Avi Kivity
2011-05-19 13:59 ` Anthony Liguori
2011-05-19 13:52 ` Anthony Liguori
2011-05-19 13:56 ` Avi Kivity
2011-05-19 13:57 ` Jan Kiszka
2011-05-19 14:04 ` Anthony Liguori
2011-05-19 14:06 ` Jan Kiszka
2011-05-19 14:11 ` Avi Kivity
2011-05-19 18:18 ` Anthony Liguori
2011-05-19 18:50 ` Jan Kiszka
2011-05-19 19:02 ` Anthony Liguori
2011-05-19 19:10 ` Jan Kiszka
2011-05-20 9:15 ` Avi Kivity
2011-05-20 17:30 ` Blue Swirl
2011-05-22 7:23 ` Avi Kivity
2011-05-19 6:31 ` Jan Kiszka
2011-05-19 13:23 ` Anthony Liguori
2011-05-19 13:25 ` Jan Kiszka
2011-05-19 13:26 ` Avi Kivity
2011-05-19 13:35 ` Anthony Liguori
2011-05-19 13:36 ` Jan Kiszka
2011-05-19 13:43 ` Avi Kivity
2011-05-19 13:39 ` Avi Kivity
2011-05-19 8:09 ` Avi Kivity
2011-05-18 15:23 ` Avi Kivity
2011-05-18 15:36 ` Jan Kiszka
2011-05-18 15:42 ` Avi Kivity
2011-05-18 16:00 ` Jan Kiszka
2011-05-18 16:14 ` Avi Kivity
2011-05-18 16:39 ` Jan Kiszka
2011-05-18 16:47 ` Avi Kivity
2011-05-18 17:07 ` Jan Kiszka
2011-05-18 17:15 ` Avi Kivity
2011-05-18 17:40 ` Jan Kiszka
2011-05-18 20:13 ` Richard Henderson
2011-05-19 8:04 ` Avi Kivity
2011-05-19 9:08 ` Gleb Natapov
2011-05-19 9:10 ` Avi Kivity
2011-05-19 9:14 ` Gleb Natapov
2011-05-19 11:44 ` Avi Kivity
2011-05-19 11:54 ` Gleb Natapov
2011-05-19 11:57 ` Jan Kiszka
2011-05-19 11:58 ` Gleb Natapov
2011-05-19 12:02 ` Avi Kivity
2011-05-19 12:21 ` Gleb Natapov
2011-05-19 12:02 ` Jan Kiszka
2011-05-19 11:57 ` Avi Kivity
2011-05-19 12:20 ` Jan Kiszka
2011-05-19 12:50 ` Avi Kivity
2011-05-19 12:58 ` Jan Kiszka
2011-05-19 13:00 ` Avi Kivity
2011-05-19 13:03 ` Jan Kiszka
2011-05-19 13:07 ` Avi Kivity
2011-05-19 13:26 ` Jan Kiszka
2011-05-19 13:30 ` Avi Kivity
2011-05-19 13:43 ` Jan Kiszka
2011-05-19 13:47 ` Avi Kivity
2011-05-19 13:49 ` Anthony Liguori
2011-05-19 13:53 ` Avi Kivity
2011-05-19 14:15 ` Anthony Liguori
2011-05-19 14:20 ` Jan Kiszka
2011-05-19 14:25 ` Anthony Liguori
2011-05-19 14:28 ` Jan Kiszka
2011-05-19 14:31 ` Avi Kivity
2011-05-19 14:37 ` Anthony Liguori
2011-05-19 14:40 ` Avi Kivity
2011-05-19 16:17 ` Gleb Natapov
2011-05-19 16:25 ` Jan Kiszka
2011-05-19 16:28 ` Gleb Natapov
2011-05-19 16:30 ` Jan Kiszka
2011-05-19 16:36 ` Anthony Liguori
2011-05-19 16:49 ` Jan Kiszka
2011-05-19 17:12 ` Gleb Natapov
2011-05-19 18:11 ` Jan Kiszka
2011-05-20 8:58 ` Avi Kivity
2011-05-20 8:56 ` Avi Kivity
2011-05-20 14:51 ` Anthony Liguori
2011-05-20 16:43 ` Olivier Galibert
2011-05-20 17:32 ` Anthony Liguori
2011-05-22 7:36 ` Avi Kivity
2011-05-19 16:43 ` Gleb Natapov
2011-05-19 16:51 ` Jan Kiszka
2011-05-19 16:27 ` Gleb Natapov
2011-05-20 8:59 ` Avi Kivity
2011-05-20 11:57 ` Gleb Natapov
2011-05-22 7:37 ` Avi Kivity
2011-05-22 8:06 ` Gleb Natapov
2011-05-22 8:09 ` Avi Kivity
2011-05-22 8:59 ` Gleb Natapov
2011-05-22 12:26 ` Avi Kivity
2011-05-19 16:32 ` Anthony Liguori
2011-05-19 16:35 ` Jan Kiszka
2011-05-19 16:38 ` Anthony Liguori
2011-05-19 16:50 ` Jan Kiszka
2011-05-20 9:03 ` Avi Kivity
2011-05-20 9:01 ` Avi Kivity
2011-05-20 15:33 ` Anthony Liguori
2011-05-20 15:59 ` Jan Kiszka
2011-05-22 7:38 ` Avi Kivity
2011-05-22 15:42 ` Anthony Liguori
2011-05-19 14:21 ` Avi Kivity
2011-05-19 13:44 ` Anthony Liguori
2011-05-19 13:47 ` Jan Kiszka
2011-05-19 13:50 ` Anthony Liguori
2011-05-19 13:55 ` Jan Kiszka
2011-05-19 13:55 ` Avi Kivity
2011-05-19 18:06 ` Anthony Liguori
2011-05-19 18:21 ` Jan Kiszka
2011-05-19 13:49 ` Avi Kivity
2011-05-19 9:24 ` Edgar E. Iglesias
2011-05-19 14:49 ` Peter Maydell
2011-05-18 16:33 ` Anthony Liguori
2011-05-18 16:41 ` Avi Kivity
2011-05-18 17:04 ` Anthony Liguori
2011-05-18 17:13 ` Avi Kivity
2011-05-18 16:42 ` Jan Kiszka
2011-05-18 17:05 ` Avi Kivity
2011-05-18 15:14 ` Anthony Liguori
2011-05-18 15:26 ` Avi Kivity
2011-05-18 16:21 ` Avi Kivity
2011-05-18 16:42 ` Jan Kiszka
2011-05-18 16:49 ` Avi Kivity
2011-05-18 17:11 ` Anthony Liguori
2011-05-18 17:38 ` Jan Kiszka
2011-05-18 15:08 ` Anthony Liguori
2011-05-18 15:37 ` Avi Kivity
2011-05-18 19:36 ` Jan Kiszka
2011-05-18 15:47 ` Stefan Weil
2011-05-18 16:06 ` Avi Kivity
2011-05-18 16:51 ` Richard Henderson
2011-05-18 16:53 ` Avi Kivity
2011-05-18 17:03 ` Richard Henderson
2011-05-18 15:58 ` Avi Kivity
2011-05-18 16:26 ` Richard Henderson
2011-05-18 16:37 ` Avi Kivity
2011-05-18 17:17 ` Avi Kivity
2011-05-18 19:40 ` Jan Kiszka
2011-05-19 8:06 ` Avi Kivity
2011-05-19 8:08 ` Jan Kiszka
2011-05-19 8:13 ` Avi Kivity
2011-05-19 8:25 ` Jan Kiszka
2011-05-19 8:43 ` Avi Kivity
2011-05-19 9:24 ` Jan Kiszka
2011-05-19 11:58 ` Avi Kivity
2011-05-19 13:36 ` Anthony Liguori
2011-05-19 13:37 ` Jan Kiszka
2011-05-19 13:41 ` Avi Kivity
2011-05-19 17:39 ` Gleb Natapov
2011-05-19 18:03 ` Anthony Liguori
2011-05-19 18:28 ` Gleb Natapov
2011-05-19 18:33 ` Anthony Liguori
2011-05-19 18:11 ` Jan Kiszka
2011-05-19 18:22 ` Gleb Natapov
2011-05-19 18:27 ` Jan Kiszka
2011-05-19 18:40 ` Gleb Natapov
2011-05-19 18:45 ` Jan Kiszka
2011-05-19 18:50 ` Gleb Natapov
2011-05-19 18:55 ` Jan Kiszka
2011-05-19 19:02 ` Jan Kiszka
2011-05-20 7:23 ` Gleb Natapov
2011-05-20 7:40 ` Jan Kiszka
2011-05-20 11:25 ` Gleb Natapov
2011-05-22 7:50 ` Avi Kivity
2011-05-22 8:41 ` Gleb Natapov
2011-05-22 10:53 ` Jan Kiszka
2011-05-22 11:29 ` Avi Kivity
2011-05-23 8:45 ` Gleb Natapov
2011-05-23 22:29 ` Jamie Lokier
2011-05-20 9:10 ` Avi Kivity
2011-05-20 12:08 ` Gleb Natapov
2011-05-22 7:56 ` Avi Kivity
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