From: Sean Christopherson Date: Tue, 22 Jun 2021 17:57:36 +0000 (-0700) Subject: KVM: x86/mmu: Drop redundant rsvd bits reset for nested NPT X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f82fdaf536ee6de36e3a7b4764f17b81afb8ef93;p=linux.git KVM: x86/mmu: Drop redundant rsvd bits reset for nested NPT Drop the extra reset of shadow_zero_bits in the nested NPT flow now that shadow_mmu_init_context computes the correct level for nested NPT. No functional change intended. Signed-off-by: Sean Christopherson Message-Id: <20210622175739.3610207-52-seanjc@google.com> Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 417f81c004da0..690f560341a2a 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -4693,12 +4693,6 @@ void kvm_init_shadow_npt_mmu(struct kvm_vcpu *vcpu, unsigned long cr0, __kvm_mmu_new_pgd(vcpu, nested_cr3, new_role.base); shadow_mmu_init_context(vcpu, context, ®s, new_role); - - /* - * Redo the shadow bits, the reset done by shadow_mmu_init_context() - * (above) may use the wrong shadow_root_level. - */ - reset_shadow_zero_bits_mask(vcpu, context); } EXPORT_SYMBOL_GPL(kvm_init_shadow_npt_mmu);