KVM: x86: Drop @invalidate_gpa param from kvm_x86_ops' tlb_flush()

Drop @invalidate_gpa from ->tlb_flush() and kvm_vcpu_flush_tlb() now
that all callers pass %true for said param, or ignore the param (SVM has
an internal call to svm_flush_tlb() in svm_flush_tlb_guest that somewhat
arbitrarily passes %false).

Remove __vmx_flush_tlb() as it is no longer used.

No functional change intended.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200320212833.3507-17-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 9951b01..7156c74 100644 (file)
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1103,7 +1103,7 @@ struct kvm_x86_ops {
        unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
        void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
 
-       void (*tlb_flush)(struct kvm_vcpu *vcpu, bool invalidate_gpa);
+       void (*tlb_flush)(struct kvm_vcpu *vcpu);
        int  (*tlb_remote_flush)(struct kvm *kvm);
        int  (*tlb_remote_flush_with_range)(struct kvm *kvm,
                        struct kvm_tlb_range *range);

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 32c9f4b..081f6b2 100644 (file)
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -5179,7 +5179,7 @@ int kvm_mmu_load(struct kvm_vcpu *vcpu)
        if (r)
                goto out;
        kvm_mmu_load_pgd(vcpu);
-       kvm_x86_ops.tlb_flush(vcpu, true);
+       kvm_x86_ops.tlb_flush(vcpu);
 out:
        return r;
 }

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 90a1ca9..c628931 100644 (file)
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -279,7 +279,7 @@ void enter_svm_guest_mode(struct vcpu_svm *svm, u64 vmcb_gpa,
        svm->nested.intercept_exceptions = nested_vmcb->control.intercept_exceptions;
        svm->nested.intercept            = nested_vmcb->control.intercept;
 
-       svm_flush_tlb(&svm->vcpu, true);
+       svm_flush_tlb(&svm->vcpu);
        svm->vmcb->control.int_ctl = nested_vmcb->control.int_ctl | V_INTR_MASKING_MASK;
        if (nested_vmcb->control.int_ctl & V_INTR_MASKING_MASK)
                svm->vcpu.arch.hflags |= HF_VINTR_MASK;

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 2c0fcb8..aafd185 100644 (file)
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1603,7 +1603,7 @@ int svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
                return 1;
 
        if (npt_enabled && ((old_cr4 ^ cr4) & X86_CR4_PGE))
-               svm_flush_tlb(vcpu, true);
+               svm_flush_tlb(vcpu);
 
        vcpu->arch.cr4 = cr4;
        if (!npt_enabled)
@@ -3153,7 +3153,7 @@ static int svm_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
        return 0;
 }
 
-void svm_flush_tlb(struct kvm_vcpu *vcpu, bool invalidate_gpa)
+void svm_flush_tlb(struct kvm_vcpu *vcpu)
 {
        struct vcpu_svm *svm = to_svm(vcpu);
 
@@ -3172,7 +3172,7 @@ static void svm_flush_tlb_gva(struct kvm_vcpu *vcpu, gva_t gva)
 
 static void svm_flush_tlb_guest(struct kvm_vcpu *vcpu)
 {
-       svm_flush_tlb(vcpu, false);
+       svm_flush_tlb(vcpu);
 }
 
 static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu)

diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index df3474f..ca95204 100644 (file)
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -360,7 +360,7 @@ u32 svm_msrpm_offset(u32 msr);
 void svm_set_efer(struct kvm_vcpu *vcpu, u64 efer);
 void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
 int svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
-void svm_flush_tlb(struct kvm_vcpu *vcpu, bool invalidate_gpa);
+void svm_flush_tlb(struct kvm_vcpu *vcpu);
 void disable_nmi_singlestep(struct vcpu_svm *svm);
 
 /* nested.c */

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 8b55f43..d843ef3 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6083,7 +6083,7 @@ void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu)
                if (flexpriority_enabled) {
                        sec_exec_control |=
                                SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
-                       vmx_flush_tlb(vcpu, true);
+                       vmx_flush_tlb(vcpu);
                }
                break;
        case LAPIC_MODE_X2APIC:
@@ -6101,7 +6101,7 @@ static void vmx_set_apic_access_page_addr(struct kvm_vcpu *vcpu, hpa_t hpa)
 {
        if (!is_guest_mode(vcpu)) {
                vmcs_write64(APIC_ACCESS_ADDR, hpa);
-               vmx_flush_tlb(vcpu, true);
+               vmx_flush_tlb(vcpu);
        }
 }
 

diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h
index 1560296..4597855 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.h
+++ b/arch/x86/kvm/vmx/vmx.h
@@ -500,46 +500,28 @@ static inline struct vmcs *alloc_vmcs(bool shadow)
 
 u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa);
 
-static inline void __vmx_flush_tlb(struct kvm_vcpu *vcpu, int vpid,
-                               bool invalidate_gpa)
-{
-       if (enable_ept && (invalidate_gpa || !enable_vpid)) {
-               if (!VALID_PAGE(vcpu->arch.mmu->root_hpa))
-                       return;
-               ept_sync_context(construct_eptp(vcpu,
-                                               vcpu->arch.mmu->root_hpa));
-       } else {
-               vpid_sync_context(vpid);
-       }
-}
-
-static inline void vmx_flush_tlb(struct kvm_vcpu *vcpu, bool invalidate_gpa)
+static inline void vmx_flush_tlb(struct kvm_vcpu *vcpu)
 {
        struct vcpu_vmx *vmx = to_vmx(vcpu);
 
        /*
-        * Flush all EPTP/VPID contexts if the TLB flush _may_ have been
-        * invoked via kvm_flush_remote_tlbs(), which always passes %true for
-        * @invalidate_gpa.  Flushing remote TLBs requires all contexts to be
-        * flushed, not just the active context.
+        * Flush all EPTP/VPID contexts, as the TLB flush _may_ have been
+        * invoked via kvm_flush_remote_tlbs().  Flushing remote TLBs requires
+        * all contexts to be flushed, not just the active context.
         *
         * Note, this also ensures a deferred TLB flush with VPID enabled and
         * EPT disabled invalidates the "correct" VPID, by nuking both L1 and
         * L2's VPIDs.
         */
-       if (invalidate_gpa) {
-               if (enable_ept) {
-                       ept_sync_global();
-               } else if (enable_vpid) {
-                       if (cpu_has_vmx_invvpid_global()) {
-                               vpid_sync_vcpu_global();
-                       } else {
-                               vpid_sync_vcpu_single(vmx->vpid);
-                               vpid_sync_vcpu_single(vmx->nested.vpid02);
-                       }
+       if (enable_ept) {
+               ept_sync_global();
+       } else if (enable_vpid) {
+               if (cpu_has_vmx_invvpid_global()) {
+                       vpid_sync_vcpu_global();
+               } else {
+                       vpid_sync_vcpu_single(vmx->vpid);
+                       vpid_sync_vcpu_single(vmx->nested.vpid02);
                }
-       } else {
-               __vmx_flush_tlb(vcpu, vmx->vpid, false);
        }
 }
 

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index a7df68a..daf1624 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2690,10 +2690,10 @@ static void kvmclock_reset(struct kvm_vcpu *vcpu)
        vcpu->arch.time = 0;
 }
 
-static void kvm_vcpu_flush_tlb(struct kvm_vcpu *vcpu, bool invalidate_gpa)
+static void kvm_vcpu_flush_tlb(struct kvm_vcpu *vcpu)
 {
        ++vcpu->stat.tlb_flush;
-       kvm_x86_ops.tlb_flush(vcpu, invalidate_gpa);
+       kvm_x86_ops.tlb_flush(vcpu);
 }
 
 static void kvm_vcpu_flush_tlb_guest(struct kvm_vcpu *vcpu)
@@ -8223,7 +8223,7 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
                if (kvm_check_request(KVM_REQ_LOAD_MMU_PGD, vcpu))
                        kvm_mmu_load_pgd(vcpu);
                if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
-                       kvm_vcpu_flush_tlb(vcpu, true);
+                       kvm_vcpu_flush_tlb(vcpu);
                if (kvm_check_request(KVM_REQ_HV_TLB_FLUSH, vcpu))
                        kvm_vcpu_flush_tlb_guest(vcpu);
                if (kvm_check_request(KVM_REQ_REPORT_TPR_ACCESS, vcpu)) {