On 08/25/2011 05:04 AM, Marcelo Tosatti wrote:
>
> It could increase the flood count independently of the accessed bit of
> the spte being updated, zapping after 3 attempts as it is now.
>
> But additionally reset the flood count if the gpte appears to be valid
> (points to an existant gfn if the present bit is set, or if its zeroed).
Well not zero, as thats a common pattern for non ptes.
On 32-bit with 4GB RAM, practically anything is a valid gpte.
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I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
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