Messages in this thread | | | Date | Mon, 30 Jun 2014 09:45:32 +0800 | From | Tang Chen <> | Subject | Re: [RFC PATCH 1/1] Move two pinned pages to non-movable node in kvm. |
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On 06/21/2014 04:39 AM, Marcelo Tosatti wrote: > On Fri, Jun 20, 2014 at 05:31:46PM -0300, Marcelo Tosatti wrote: >>> IIRC your shadow page pinning patch series support flushing of ptes >>> by mmu notifier by forcing MMU reload and, as a result, faulting in of >>> pinned pages during next entry. Your patch series does not pin pages >>> by elevating their page count. >> >> No but PEBS series does and its required to stop swap-out >> of the page. > > Well actually no because of mmu notifiers. > > Tang, can you implement mmu notifiers for the other breaker of > mem hotplug ?
Hi Marcelo,
I made a patch to update ept and apic pages when finding them in the next ept violation. And I also updated the APIC_ACCESS_ADDR phys_addr. The pages can be migrated, but the guest crached.
How do I stop guest from access apic pages in mmu_notifier when the page migration starts ? Do I need to stop all the vcpus by set vcpu state to KVM_MP_STATE_HALTED ? If so, the vcpu will not able to go to the next ept violation.
So, may I write any specific value into APIC_ACCESS_ADDR to stop guest from access to apic page ?
Thanks.
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