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From: | Avi Kivity |
Subject: | [Qemu-devel] Re: [PATCH] RFC: use logging count for individual regions |
Date: | Tue, 28 Jul 2009 09:59:23 +0300 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Lightning/1.0pre Thunderbird/3.0b2 |
On 07/28/2009 09:50 AM, Jan Kiszka wrote:
Unlike the qemu dirty byte-map, the kvm dirty log can only service one user. As we have multiple users (vga and migration), we need some way to fix this impedance mismatch. I think refcounts are the easiest.This case is already handled upstream. If we had more users, we would need refcounts.
If we turn off logging on migration failure, then we'd introduce a bug in vga logging, no?
-- Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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