linux-kernel - [PATCH 02/23] KVM: MMU: nested EPT cannot be used in SMM

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Date:   Fri,  4 Feb 2022 06:56:57 -0500
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     dmatlack@...gle.com, seanjc@...gle.com, vkuznets@...hat.com
Subject: [PATCH 02/23] KVM: MMU: nested EPT cannot be used in SMM

The role.base.smm flag is always zero, do not bother copying it over
from vcpu->arch.root_mmu.

Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
---
 arch/x86/kvm/mmu/mmu.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 9424ae90f1ef..b0065ae3cea8 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4881,9 +4881,6 @@ kvm_calc_shadow_ept_root_page_role(struct kvm_vcpu *vcpu, bool accessed_dirty,
 {
 	union kvm_mmu_role role = {0};
 
-	/* SMM flag is inherited from root_mmu */
-	role.base.smm = vcpu->arch.root_mmu.mmu_role.base.smm;
-
 	role.base.level = level;
 	role.base.has_4_byte_gpte = false;
 	role.base.direct = false;
-- 
2.31.1