Hi Dushyant,
Please refer to the magic page section of the following document:
linux/Documentation/kvm/ppc-pv.txt
Regards
Varun
________________________________________
From: kvm-ppc-ow...@vger.kernel.org [kvm-ppc-ow...@vger.kernel.org] on behalf
of Dushyant Bansal [cs5070...@cse.iitd.ac.in]
Sent: Saturday, February 26, 2011 5:35 PM
To: kvm-ppc@vger.kernel.org
Subject: Patching instructions with PV versions
Hi,
I understand that in order to improve performance by reducing vm
exits, kvm uses one shared page between kvm and guest. Now, guest can
map this page and access its fields using load, store instructions.
Then, it patches instructions with their paravirtualized versions
(inside kvm_use_magic_page). I have a few questions.
Is patching, by default enabled for every guest?
When is this patching done? Does it target only guest kernel code?
Thanks,
Dushyant
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