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

Pull KVM fixes from Paolo Bonzini:
 "Three one-line fixes for my first pull request; one for x86 host, one
  for x86 guest, one for PPC"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  x86: kvmclock: zero initialize pvclock shared memory area
  kvm/ppc/booke: Delay kvmppc_lazy_ee_enable
  KVM: x86: remove vcpu's CPL check in host-invoked XCR set

3 files changed, 5 insertions, 4 deletions

diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 5cd7ad0c1176..1a1b51189773 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -673,7 +673,6 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
                 ret = s;
                 goto out;
         }
-        kvmppc_lazy_ee_enable();
 
         kvm_guest_enter();
 
@@ -699,6 +698,8 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
         kvmppc_load_guest_fp(vcpu);
 #endif
 
+        kvmppc_lazy_ee_enable();
+
         ret = __kvmppc_vcpu_run(kvm_run, vcpu);
 
         /* No need for kvm_guest_exit. It's done in handle_exit.
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index d2c381280e3c..3dd37ebd591b 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -242,6 +242,7 @@ void __init kvmclock_init(void)
         if (!mem)
                 return;
         hv_clock = __va(mem);
+        memset(hv_clock, 0, size);
 
         if (kvm_register_clock("boot clock")) {
                 hv_clock = NULL;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 094b5d96ab14..e8ba99c34180 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -582,8 +582,6 @@ int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
         if (index != XCR_XFEATURE_ENABLED_MASK)
                 return 1;
         xcr0 = xcr;
-        if (kvm_x86_ops->get_cpl(vcpu) != 0)
-                return 1;
         if (!(xcr0 & XSTATE_FP))
                 return 1;
         if ((xcr0 & XSTATE_YMM) && !(xcr0 & XSTATE_SSE))
@@ -597,7 +595,8 @@ int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
 
 int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
 {
-        if (__kvm_set_xcr(vcpu, index, xcr)) {
+        if (kvm_x86_ops->get_cpl(vcpu) != 0 ||
+            __kvm_set_xcr(vcpu, index, xcr)) {
                 kvm_inject_gp(vcpu, 0);
                 return 1;
         }