From 2e34f942a5f251f426f240edf68197817935cd31 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Thu, 10 Oct 2024 11:23:26 -0700 Subject: [PATCH] KVM: nVMX: Drop pointless msr_bitmap_map field from struct nested_vmx MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Remove vcpu_vmx.msr_bitmap_map and instead use an on-stack structure in the one function that uses the map, nested_vmx_prepare_msr_bitmap(). Tested-by: Alex Bennée Signed-off-by: Sean Christopherson Tested-by: Dmitry Osipenko Signed-off-by: Paolo Bonzini Message-ID: <20241010182427.1434605-25-seanjc@google.com> --- arch/x86/kvm/vmx/nested.c | 8 ++++---- arch/x86/kvm/vmx/vmx.h | 2 -- 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index e94a25373a596..fb37658b62c91 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -621,7 +621,7 @@ static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu, int msr; unsigned long *msr_bitmap_l1; unsigned long *msr_bitmap_l0 = vmx->nested.vmcs02.msr_bitmap; - struct kvm_host_map *map = &vmx->nested.msr_bitmap_map; + struct kvm_host_map msr_bitmap_map; /* Nothing to do if the MSR bitmap is not in use. */ if (!cpu_has_vmx_msr_bitmap() || @@ -644,10 +644,10 @@ static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu, return true; } - if (kvm_vcpu_map(vcpu, gpa_to_gfn(vmcs12->msr_bitmap), map)) + if (kvm_vcpu_map(vcpu, gpa_to_gfn(vmcs12->msr_bitmap), &msr_bitmap_map)) return false; - msr_bitmap_l1 = (unsigned long *)map->hva; + msr_bitmap_l1 = (unsigned long *)msr_bitmap_map.hva; /* * To keep the control flow simple, pay eight 8-byte writes (sixteen @@ -711,7 +711,7 @@ static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu, nested_vmx_set_intercept_for_msr(vmx, msr_bitmap_l1, msr_bitmap_l0, MSR_IA32_FLUSH_CMD, MSR_TYPE_W); - kvm_vcpu_unmap(vcpu, &vmx->nested.msr_bitmap_map, false); + kvm_vcpu_unmap(vcpu, &msr_bitmap_map, false); vmx->nested.force_msr_bitmap_recalc = false; diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 2325f773a20be..40303b43da6c8 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -200,8 +200,6 @@ struct nested_vmx { struct kvm_host_map virtual_apic_map; struct kvm_host_map pi_desc_map; - struct kvm_host_map msr_bitmap_map; - struct pi_desc *pi_desc; bool pi_pending; u16 posted_intr_nv; -- 2.39.5