Re: [RFC PATCH v5 045/104] KVM: x86/tdp_mmu: make REMOVED_SPTE include shadow_initial value

[Kai Huang]

On Fri, 2022-03-04 at 11:49 -0800, isaku.yamahata@xxxxxxxxx wrote:
> From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
> 
> TDP MMU uses REMOVED_SPTE = 0x5a0ULL as special constant to indicate the
> intermediate value to indicate one thread is operating on it and the value
> should be semi-arbitrary value.  For TDX (more correctly to use #VE), the
> value should include suppress #VE value which is shadow_init_value.
> 
> Define SHADOW_REMOVED_SPTE as shadow_init_value | REMOVED_SPTE, and replace
> REMOVED_SPTE with SHADOW_REMOVED_SPTE to use suppress #VE bit properly for
> TDX.

Like we discussed, this patch should be merged with patch "KVM: x86/mmu: Allow
non-zero init value for shadow PTE".


-- 
Thanks,
-Kai