KVM: SVM: Return correct values in nested_svm_exit_handled_msr

The nested_svm_exit_handled_msr() returned an bool which is
a bug. I worked by accident because the exected integer
return values match with the true and false values. This
patch changes the return value to int and let the function
return the correct values.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 6882be5b926798e5bf06548904ef43749dff47a9..07437ca12787adf9882e76921dbf021718153ecd 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1552,16 +1552,16 @@ static void nested_svm_unmap(struct page *page)
        kvm_release_page_dirty(page);
 }
 
-static bool nested_svm_exit_handled_msr(struct vcpu_svm *svm)
+static int nested_svm_exit_handled_msr(struct vcpu_svm *svm)
 {
        u32 param = svm->vmcb->control.exit_info_1 & 1;
        u32 msr = svm->vcpu.arch.regs[VCPU_REGS_RCX];
-       bool ret = false;
        u32 t0, t1;
+       int ret;
        u8 val;
 
        if (!(svm->nested.intercept & (1ULL << INTERCEPT_MSR_PROT)))
-               return false;
+               return NESTED_EXIT_HOST;
 
        switch (msr) {
        case 0 ... 0x1fff:
@@ -1579,12 +1579,12 @@ static bool nested_svm_exit_handled_msr(struct vcpu_svm *svm)
                t0 %= 8;
                break;
        default:
-               ret = true;
+               ret = NESTED_EXIT_DONE;
                goto out;
        }
 
        if (!kvm_read_guest(svm->vcpu.kvm, svm->nested.vmcb_msrpm + t1, &val, 1))
-               ret = val & ((1 << param) << t0);
+               ret = val & ((1 << param) << t0) ? NESTED_EXIT_DONE : NESTED_EXIT_HOST;
 
 out:
        return ret;