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From: | Avi Kivity |
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 14:19:03 +0300 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20110816 Thunderbird/6.0 |
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?We need a collection of gdb scripts to find a qdev, dump the memory hierarchy, look up gpas, and get info about specific devices.
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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