On 05/05/2010 03:45 PM, Xiao Guangrong wrote:
Avi Kivity wrote:
spin_lock(&vcpu->kvm->mmu_lock);
+ index = kvm_page_table_hashfn(gfn);
+ bucket =&vcpu->kvm->arch.mmu_page_hash[index];
+ hlist_for_each_entry_safe(s, node, tmp, bucket, hash_link)
+ if (s == sp) {
+ if (s->gfn == gfn&& s->role.word == role.word)
+ live = true;
+ break;
+ }
+
+ if (!live)
+ goto unlock_exit;
+
Did you try the root_count method? I think it's cleaner.
Avi, Thanks for your idea.
I have considered this method, but i'm not sure when it's the good time
to real free this page, and i think we also need a way to synchronize the
real free path and this path. Do you have any comment for it :-(
Same as mmu_free_roots():
--sp->root_count;
if (!sp->root_count && sp->role.invalid) {
kvm_mmu_zap_page(vcpu->kvm, sp);
goto unlock_exit;
}
--
error compiling committee.c: too many arguments to function
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