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From: | Avi Kivity |
Subject: | Re: [Qemu-devel] [PATCH v2 5/6] vga: Use linear mapping + dirty logging in chain 4 memory access mode |
Date: | Wed, 17 Aug 2011 16:48:01 -0700 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20110707 Thunderbird/5.0 |
On 08/17/2011 04:38 PM, Avi Kivity wrote:
The mmio code hass->plane_updated |= mask; /* only used to detect font change */aren't we losing it? we could easily recover it via dirty logging.
We can't really recover it. So I think we need to restrict the optimization to graphic mode.
Is grub using text mode or graphic mode?If it's using text mode, it may be faster to compare the font plane to a snapshot from the last redraw than to take an exit.
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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