From: Jan Kiszka <jan.kiszka@siemens.com>
To: Avi Kivity <avi@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
qemu-devel <qemu-devel@nongnu.org>,
Gerd Hoffmann <kraxel@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging in chain 4 memory access mode
Date: Thu, 25 Aug 2011 13:28:55 +0200 [thread overview]
Message-ID: <4E5631F7.1090006@siemens.com> (raw)
In-Reply-To: <4E562FA7.7060803@redhat.com>
On 2011-08-25 13:19, Avi Kivity wrote:
> On 08/25/2011 01:51 PM, Jan Kiszka wrote:
>>>
>>> Plain F15 is slow. SR2 = SR4 = 0.
>>
>> So it's not using chain4 mode. Can you check what mode the adapter is
>> actually in and how VRAM is accessed? Likely, there is nothing we can do
>> about it. /me just wonders what makes F15 grub behave differently from
>> other distro's versions...
>>
>
> Do you remember offhand which registers I need to look at?
No, just that there are quite a few. You could check e.g.
http://www.osdever.net/FreeVGA/vga/vga.htm for descriptions. Also check
what paths the mmio handlers take.
>
> We need a collection of gdb scripts to find a qdev, dump the memory
> hierarchy, look up gpas, and get info about specific devices.
...or finally have a "device-show" monitor command to dump the device
state. More stable /wrt QEMU internals.
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2011-08-25 11:29 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-22 17:12 [Qemu-devel] [PATCH v3 0/6] vga: dirty log cleanup, more linear mapping Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 1/6] vmware-vga: Register reset service Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 2/6] vmware-vga: Disable verbose mode Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 3/6] vmware-vga: Remove dead DIRECT_VRAM mode Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 4/6] vmware-vga: Eliminate vga_dirty_log_restart Jan Kiszka
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging in chain 4 memory access mode Jan Kiszka
2011-08-25 7:19 ` Avi Kivity
2011-08-25 9:07 ` Jan Kiszka
2011-08-25 9:16 ` Avi Kivity
2011-08-25 9:21 ` Jan Kiszka
2011-08-25 10:45 ` Avi Kivity
2011-08-25 10:51 ` Jan Kiszka
2011-08-25 11:19 ` Avi Kivity
2011-08-25 11:28 ` Jan Kiszka [this message]
2011-09-12 15:20 ` Alexander Graf
2011-09-12 15:33 ` Jan Kiszka
2011-09-12 15:45 ` Andreas Färber
2011-09-12 15:49 ` Jan Kiszka
2011-09-12 15:57 ` Jan Kiszka
2011-09-13 7:39 ` Alexander Graf
2011-09-13 8:14 ` Jan Kiszka
2011-09-13 8:17 ` Alexander Graf
2011-09-13 8:19 ` Andreas Färber
2011-09-13 8:40 ` Alexander Graf
2011-09-13 9:00 ` Jan Kiszka
2011-09-13 9:42 ` Alexander Graf
2011-09-13 11:34 ` Jan Kiszka
2011-09-13 19:39 ` Blue Swirl
2011-09-14 7:11 ` Avi Kivity
2011-09-14 7:42 ` Alexander Graf
2011-09-14 8:02 ` Jan Kiszka
2011-09-14 8:17 ` Avi Kivity
2011-09-14 8:20 ` Jan Kiszka
2011-09-14 8:22 ` Avi Kivity
2011-09-14 8:24 ` Jan Kiszka
2011-09-14 8:27 ` Alexander Graf
2011-09-14 8:33 ` Jan Kiszka
2011-09-14 8:35 ` Avi Kivity
2011-09-14 20:06 ` Blue Swirl
2011-09-14 20:14 ` Alexander Graf
2011-09-14 20:16 ` Avi Kivity
2011-09-14 20:35 ` Alexander Graf
2011-09-14 20:42 ` Richard Henderson
2011-09-14 21:27 ` Andreas Färber
2011-09-14 21:41 ` Alexander Graf
2011-09-15 1:24 ` Benjamin Herrenschmidt
2011-09-15 7:32 ` Avi Kivity
2011-09-15 7:35 ` Alexander Graf
2011-09-15 10:01 ` Benjamin Herrenschmidt
2011-09-15 11:31 ` Avi Kivity
2011-09-17 21:40 ` Blue Swirl
2011-09-18 11:28 ` Avi Kivity
2011-09-19 9:15 ` Alexander Graf
2011-09-19 9:22 ` Avi Kivity
2011-09-19 9:36 ` Alexander Graf
2011-09-19 9:48 ` Avi Kivity
2011-09-14 20:15 ` Avi Kivity
2011-09-14 20:25 ` Blue Swirl
2011-09-15 7:30 ` Avi Kivity
2011-09-13 9:43 ` Andreas Färber
2011-09-12 20:21 ` Blue Swirl
2011-09-13 6:54 ` Alexander Graf
2011-09-13 7:51 ` Avi Kivity
2011-09-13 7:54 ` Alexander Graf
2011-09-13 8:10 ` Avi Kivity
2011-08-22 17:12 ` [Qemu-devel] [PATCH v3 6/6] vga: Drop some unused fields Jan Kiszka
2011-08-22 20:18 ` [Qemu-devel] [PATCH v3 0/6] vga: dirty log cleanup, more linear mapping Anthony Liguori
2011-08-22 20:36 ` Jan Kiszka
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