Re: [RFT] kvm with Windows optimization

[Anthony Liguori <anthony-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>]

Avi Kivity wrote:
> Anthony Liguori wrote:
>> Avi Kivity wrote:
>>> Haydn Solomon wrote:
>>>  
>>>> I also had a problem installing windows xp. Got the following error
>>>>     
>>>
>>>
>>> I guess I'll have to test that too.
>>>   
>>
>> I hit it again, this time about half-way through the second stage 
>> install of Windows XP (last time it was almost immediately).  This is 
>> with your updated tree.  I'll next try to reproduce with the latest git.
>
> Can you try upping the 'min' parameter below:
>
>> static int mmu_topup_memory_caches(struct kvm_vcpu *vcpu)
>> {
>>     int r;
>>
>>     kvm_mmu_free_some_pages(vcpu);
>>     r = mmu_topup_memory_cache(&vcpu->mmu_pte_chain_cache,
>>                    pte_chain_cache, 4);
>>     if (r)
>>         goto out;
>>     r = mmu_topup_memory_cache(&vcpu->mmu_rmap_desc_cache,
>>                    rmap_desc_cache, 1);
>>     if (r)
>>         goto out;
>>     r = mmu_topup_memory_cache_page(&vcpu->mmu_page_cache, 8);
>>     if (r)
>>         goto out;
>>     r = mmu_topup_memory_cache(&vcpu->mmu_page_header_cache,
>>                    mmu_page_header_cache, 4);
>> out:
>>     return r;
>> }
>
>
> These are the (4, 1, 8, 4) values in the call to 
> mmu_topup_memory_cache.  Perhaps one of them is too low.

Sure.  Would this be affected at all by your tpr patch?  IIUC, if this 
is the problem, it should be reproducible with the latest git too?

Regards,

Anthony Liguori


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