Re: [PATCH 7/10] KVM: MMU: introduce a common function to get no-dirty-loggedslot

From: Xiao Guangrong
Date: Sun Mar 06 2011 - 22:49:59 EST


On 03/06/2011 08:28 PM, Avi Kivity wrote:

>> static int mapping_level(struct kvm_vcpu *vcpu, gfn_t large_gfn)
>> @@ -2155,9 +2166,8 @@ pte_prefetch_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn, bool no_dirty_log)
>> {
>> struct kvm_memory_slot *slot;
>>
>> - slot = gfn_to_memslot(vcpu->kvm, gfn);
>> - if (!slot || slot->flags& KVM_MEMSLOT_INVALID ||
>> - (no_dirty_log&& slot->dirty_bitmap))
>> + slot = gfn_to_memslot_dirty_bitmap(vcpu, gfn, no_dirty_log);
>> + if (slot&& slot->flags& KVM_MEMSLOT_INVALID)
>> slot = NULL;
>>
>> return slot;
>
> For a unification this adds a lot of code... I think the result is more complicated than the starting point.
>

After more thinking, i think we can move 'slot->flags& KVM_MEMSLOT_INVALID'
into the common function, since the later gva_to_pfn also can filter this out.
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