Zachary Amsden wrote:
I'd rather keep it, even with bitrot - it was non-trivial to get
correct, and found many surprises in the code; most notably, it can
detect
1) PTE writes to pages not declared as page tables
2) Failure to allocate or de-allocate page tables using the
paravirt-ops API
3) PTE writes using the wrong level operations
These are most useful properties; in fact, I would like to extend the
code for 64-bit paravirt-ops and 4-level paging, so rather not kill it
until then.
I never merged the whole bit upstream because it added a field to
struct page.
Hm, is that a big problem? It would be OK for a debug config option,
wouldn't it? Also, it doesn't seem particularly vmi-specific. Could it
be made part of the pvops infrastructure?
J
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