On 2015/11/09 19:14, Paolo Bonzini wrote:
Can you also change kvm_mmu_mark_parents_unsync to use
for_each_rmap_spte instead of pte_list_walk? It is the last use of
pte_list_walk, and it's nice if we have two uses of for_each_rmap_spte
with parent_ptes as the argument.
No problem, I will do.
Since parent_ptes is also explained as the "reverse mapping" list of
parent sptes (in mmu.txt and kvm_host.h), using rmap helpers will not
look so strange.
BTW, on my todo list is to change the rmap items to a struct (with a
single u64 inside) for type safety. Since you are touching this code,
perhaps you can give it a shot?
Yes, almost done here (assuming that you mean 'unsigned long').
But I have some candidates for its name in mind:
1. struct kvm_rmap { unsigned long val; };
2. struct kvm_rmap_head { unsigned long val; };
3. struct kvm_rmap_list_head { unsigned long val; };
4. struct kvm_spte_list_head { unsigned long val; };
Since this is the head of the reverse mapping list of sptes, I thought
name 3 might be the best and first made a patch with it, but it was
a bit longer than I had hoped it to be.
I have changed it to name 2, and it looks a bit nicer now, but even
shorter, e.g. name 1, may be good as well.
Do you have any preference?
Takuya
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