From: Ian Molton <ian.molton@codethink.co.uk>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] Understanding KVM
Date: Thu, 06 Dec 2012 18:04:43 +0000 [thread overview]
Message-ID: <50C0DE3B.8060008@codethink.co.uk> (raw)
Hi,
Im trying to figure out how (on, say, x86), qemu (1.3, git) knows when
the guest has accessed a page - in particular, on a framebuffer.
It looks like its done via dirty page logs, which are maintained by the
host kernel, so probably this is a kernel question, more than a qemu one.
Is this the case? if so, where do the bits in the dirty bitmap get set?
I cant find anything in the kernel that seems to do much with it, other
than to copy the bitmap to userspace.
-Ian
reply other threads:[~2012-12-06 18:04 UTC|newest]
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