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From: Avi Kivity <avi@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Gleb Natapov <gleb@redhat.com>, qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [RFC] Memory API
Date: Fri, 20 May 2011 11:58:21 +0300	[thread overview]
Message-ID: <4DD62D2D.2080003@redhat.com> (raw)
In-Reply-To: <4DD54A2C.6050706@siemens.com>

On 05/19/2011 07:49 PM, Jan Kiszka wrote:
> >
> >  If you have overlapping BARs, the PCI bus will always send the request
> >  to a single device based on something that's implementation specific.
> >  This works because each PCI device advertises the BAR locations and
> >  sizes in it's config space.
>
> That's not a use case for priorities at all. Priorities are useful for
> PAM and SMRAM-like scenarios.

Correct.  Priorities are also useful to decide if BARs hide RAM or 
vice-versa (determined by the PCI container's priority vs. the RAM 
container priorities, not individual BARs' priorities).

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

  parent reply	other threads:[~2011-05-20  8:58 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
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 [this message]
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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