Messages in this thread | | | Subject | Re: [kvm-devel] [RFC 0/8]KVM: swap out guest pages | From | Rusty Russell <> | Date | Tue, 24 Jul 2007 17:17:16 +1000 |
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On Tue, 2007-07-24 at 09:59 +0300, Avi Kivity wrote: > However, you can probably work around that by not setting an rmap for > the kernel mappings, and instead have the guest teach the host where the > kernel page tables live. You'd only be left with shared libraries, > until the kernel can share page tables for them too.
Well, I already treat kernel mappings specially (effectively I know the guest's PAGE_OFFSET): they're kept identical in all the 4 shadows, and need explicit guest flushing.
Whether the guest shares (non-kernel) page tables or not, I will shadow them dumb as separate page table pages the way things stand. So, yes, shared libs will be my main issue. Address space randomization means I can't even use a heuristic such as looking for the page at the same address in other shadows. I'll come up with something.
Anyway, virtio what I'm *supposed* to be doing today...
Thanks, Rusty.
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