KVM: SVM: Use svm_flush_tlb instead of force_new_asid

This patch replaces all calls to force_new_asid which are
intended to flush the guest-tlb by the more appropriate
function svm_flush_tlb. As a side-effect the force_new_asid
function is removed.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 16a73c7..7272b36 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -421,11 +421,6 @@ static inline void invlpga(unsigned long addr, u32 asid)
        asm volatile (__ex(SVM_INVLPGA) : : "a"(addr), "c"(asid));
 }
 
-static inline void force_new_asid(struct kvm_vcpu *vcpu)
-{
-       to_svm(vcpu)->asid_generation--;
-}
-
 static int get_npt_level(void)
 {
 #ifdef CONFIG_X86_64
@@ -999,7 +994,7 @@ static void init_vmcb(struct vcpu_svm *svm)
                save->cr3 = 0;
                save->cr4 = 0;
        }
-       force_new_asid(&svm->vcpu);
+       svm->asid_generation = 0;
 
        svm->nested.vmcb = 0;
        svm->vcpu.arch.hflags = 0;
@@ -1419,7 +1414,7 @@ static void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
        unsigned long old_cr4 = to_svm(vcpu)->vmcb->save.cr4;
 
        if (npt_enabled && ((old_cr4 ^ cr4) & X86_CR4_PGE))
-               force_new_asid(vcpu);
+               svm_flush_tlb(vcpu);
 
        vcpu->arch.cr4 = cr4;
        if (!npt_enabled)
@@ -1762,7 +1757,7 @@ static void nested_svm_set_tdp_cr3(struct kvm_vcpu *vcpu,
 
        svm->vmcb->control.nested_cr3 = root;
        mark_dirty(svm->vmcb, VMCB_NPT);
-       force_new_asid(vcpu);
+       svm_flush_tlb(vcpu);
 }
 
 static void nested_svm_inject_npf_exit(struct kvm_vcpu *vcpu,
@@ -2366,7 +2361,7 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm)
        svm->nested.intercept_exceptions = nested_vmcb->control.intercept_exceptions;
        svm->nested.intercept            = nested_vmcb->control.intercept;
 
-       force_new_asid(&svm->vcpu);
+       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;
@@ -3308,7 +3303,7 @@ static int svm_set_tss_addr(struct kvm *kvm, unsigned int addr)
 
 static void svm_flush_tlb(struct kvm_vcpu *vcpu)
 {
-       force_new_asid(vcpu);
+       to_svm(vcpu)->asid_generation--;
 }
 
 static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu)
@@ -3562,7 +3557,7 @@ static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)
 
        svm->vmcb->save.cr3 = root;
        mark_dirty(svm->vmcb, VMCB_CR);
-       force_new_asid(vcpu);
+       svm_flush_tlb(vcpu);
 }
 
 static void set_tdp_cr3(struct kvm_vcpu *vcpu, unsigned long root)
@@ -3576,7 +3571,7 @@ static void set_tdp_cr3(struct kvm_vcpu *vcpu, unsigned long root)
        svm->vmcb->save.cr3 = vcpu->arch.cr3;
        mark_dirty(svm->vmcb, VMCB_CR);
 
-       force_new_asid(vcpu);
+       svm_flush_tlb(vcpu);
 }
 
 static int is_disabled(void)