From: Avi Kivity <avi@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [RFC] Memory API
Date: Wed, 18 May 2011 20:15:47 +0300 [thread overview]
Message-ID: <4DD3FEC3.90108@redhat.com> (raw)
In-Reply-To: <4DD3FCCE.1090605@siemens.com>
On 05/18/2011 08:07 PM, Jan Kiszka wrote:
> On 2011-05-18 18:47, Avi Kivity wrote:
> >>>> I'm specifically thinking of fully trackable slot updates. The clients
> >>>> should not have to maintain the flat layout. They should just receive
> >>>> updates in the form of slot X added/modified/removed. For now, this
> >>>> magic happens multiple times in the clients, and that is very bad.
> >>>
> >>> Slots don't have any meaning. You can have a RAM region which is
> >>> overlaid by a smaller mmio region -> the RAM slot is split into two.
> >>>
> >>> We should just send clients a list of ranges, and they can associate
> >>> them with slots themselves.
> >>
> >> And that association logic should be as simple as matching a unique
> >> range ID against an existing slot (for updates and deletions) or adding
> >> a new slot for a new range and storing the ID. Anything else will not
> >> allow to simplify the existing code bases noticeably. That's my point.
> >
> > We won't have a natural ID.
>
> The address of the data structure describing a region could be such a
> thing. Provided, of course, we prepare a flatted view ahead of time, not
> on the fly.
It will change as soon as the memory map changes.
> > But I'll see if I can have a library
> > calculate the minimum difference between the previous layout and current
> > layout. Should not be too hard.
>
> We need exact match on the client side with the old range. E.g. if you
> put a new region over an existing one, effectively splitting it into two
> halves, the core has to
> - shrink the existing range to form the first half
> - register two new ranges to reflect the rest
>
> On unregistering of that overlap, we need the reverse. So all the client
> has to do then is to decide if it is interested in some range, and then
> store it internally with some additional data (and process it, of
> course). No more merging, no more overlap detection and splitting up at
> client level.
Right. We do a symmetric set difference between the old and new maps
and let the client know what has changed.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2011-05-18 17:15 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
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 [this message]
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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