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[Xen-devel] vram_dirty vs. shadow paging dirty tracking

When thinking about multithreading the device model, it occurred to me that it's a little odd that we're doing a memcmp to determine which portions of the VRAM has changed. Couldn't we just use dirty page tracking in the shadow paging code? That should significantly lower the overhead of this plus I believe the infrastructure is already mostly there in the shadow2 code.

Is this a sane idea?


Anthony Liguori

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