KVM: x86: Clean up duplicate assignment

mmu.free() already set root_hpa to INVALID_PAGE, no need to do it again in the
destory_kvm_mmu().

kvm_x86_ops->set_cr4() and set_efer() already assign cr4/efer to
vcpu->arch.cr4/efer, no need to do it again later.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index a455c5e..c075542 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2478,10 +2478,9 @@ static int init_kvm_mmu(struct kvm_vcpu *vcpu)
 static void destroy_kvm_mmu(struct kvm_vcpu *vcpu)
 {
        ASSERT(vcpu);
-       if (VALID_PAGE(vcpu->arch.mmu.root_hpa)) {
+       if (VALID_PAGE(vcpu->arch.mmu.root_hpa))
+               /* mmu.free() should set root_hpa = INVALID_PAGE */
                vcpu->arch.mmu.free(vcpu);
-               vcpu->arch.mmu.root_hpa = INVALID_PAGE;
-       }
 }
 
 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ae9d6f3..03039fd 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -486,7 +486,7 @@ int __kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
                return 1;
 
        kvm_x86_ops->set_cr4(vcpu, cr4);
-       vcpu->arch.cr4 = cr4;
+
        kvm_mmu_reset_context(vcpu);
 
        return 0;
@@ -721,8 +721,6 @@ static int set_efer(struct kvm_vcpu *vcpu, u64 efer)
 
        kvm_x86_ops->set_efer(vcpu, efer);
 
-       vcpu->arch.efer = efer;
-
        vcpu->arch.mmu.base_role.nxe = (efer & EFER_NX) && !tdp_enabled;
        kvm_mmu_reset_context(vcpu);