Re: [PATCH 2/2] KVM: X86: Don't reset mmu context when toggling X86_CR4_PGE

[Sean Christopherson]

On Sun, Sep 19, 2021, Lai Jiangshan wrote:
> From: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>
> 
> X86_CR4_PGE doesn't participate in kvm_mmu_role, so the mmu context
> doesn't need to be reset.  It is only required to flush all the guest
> tlb.
> 
> It is also inconsistent that X86_CR4_PGE is in KVM_MMU_CR4_ROLE_BITS
> while kvm_mmu_role doesn't use X86_CR4_PGE.  So X86_CR4_PGE is also
> removed from KVM_MMU_CR4_ROLE_BITS.
> 
> Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>
> ---

With the KVM_REQ_TLB_FLUSH_GUEST caveat, 

Reviewed-by: Sean Christopherson <seanjc@xxxxxxxxxx>