Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

[sfrench/cifs-2.6.git] / arch / x86 / kvm / x86.c

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 22a183aac1c63f333efb446f1376d1ac09b85cd0..71e7cda6d01430bca8ef226238589ab0e830d6c9 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6671,11 +6671,8 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu)
        unsigned long nr, a0, a1, a2, a3, ret;
        int op_64_bit;
 
-       if (kvm_hv_hypercall_enabled(vcpu->kvm)) {
-               if (!kvm_hv_hypercall(vcpu))
-                       return 0;
-               goto out;
-       }
+       if (kvm_hv_hypercall_enabled(vcpu->kvm))
+               return kvm_hv_hypercall(vcpu);
 
        nr = kvm_register_read(vcpu, VCPU_REGS_RAX);
        a0 = kvm_register_read(vcpu, VCPU_REGS_RBX);
@@ -6696,7 +6693,7 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu)
 
        if (kvm_x86_ops->get_cpl(vcpu) != 0) {
                ret = -KVM_EPERM;
-               goto out_error;
+               goto out;
        }
 
        switch (nr) {
@@ -6716,12 +6713,11 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu)
                ret = -KVM_ENOSYS;
                break;
        }
-out_error:
+out:
        if (!op_64_bit)
                ret = (u32)ret;
        kvm_register_write(vcpu, VCPU_REGS_RAX, ret);
 
-out:
        ++vcpu->stat.hypercalls;
        return kvm_skip_emulated_instruction(vcpu);
 }
@@ -7980,6 +7976,7 @@ static int __set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
 {
        struct msr_data apic_base_msr;
        int mmu_reset_needed = 0;
+       int cpuid_update_needed = 0;
        int pending_vec, max_bits, idx;
        struct desc_ptr dt;
        int ret = -EINVAL;
@@ -8018,8 +8015,10 @@ static int __set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
        vcpu->arch.cr0 = sregs->cr0;
 
        mmu_reset_needed |= kvm_read_cr4(vcpu) != sregs->cr4;
+       cpuid_update_needed |= ((kvm_read_cr4(vcpu) ^ sregs->cr4) &
+                               (X86_CR4_OSXSAVE | X86_CR4_PKE));
        kvm_x86_ops->set_cr4(vcpu, sregs->cr4);
-       if (sregs->cr4 & (X86_CR4_OSXSAVE | X86_CR4_PKE))
+       if (cpuid_update_needed)
                kvm_update_cpuid(vcpu);
 
        idx = srcu_read_lock(&vcpu->kvm->srcu);