Messages in this thread | | | Date | Wed, 17 Sep 2008 15:02:29 -0700 | From | Avi Kivity <> | Subject | Re: Populating multiple ptes at fault time |
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Jeremy Fitzhardinge wrote: > Minor faults are easier; if the page already exists in memory, we should > just create mappings to it. If neighbouring pages are also already > present, then we can can cheaply create mappings for them too. > >
One problem is the accessed bit. If it's unset, the shadow code cannot make the pte present (since it has to trap in order to set the accessed bit); if it's set, we're lying to the vm.
This doesn't affect Xen, only kvm.
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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