Re: [PATCH] KVM: VMX: Move private memory slot position

[Avi Kivity <avi@redhat.com>]

Sheng Yang wrote:
>> I've been thinking that we can get rid of internal slots, by placing the
>> TSS, real mode identity map, and APIC access page in the bios.  Of
>> course we would need a new ioctl to let the kernel know where the
>> scratch memory is located and how much of it is available.
>>
>>     
>
> How about put into userspace e.g. pc_init()? I think more easy than keeping 
> bios sync with KVM. 

That was my plan -- bios reserves space, qemu tells the kernel where it 
is, kernel uses the space.

> Anyway, vmx specific thing would become generic. I'd like 
> to keep it as what it is at least for now...
>   

It's already exposed to userspace, as userspace tells the kernel where 
to put the slots.  The only advantage is that we reduce slot count and 
don't have to mess with the e820 map.

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