Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

[mirror_qemu.git] / target / i386 / kvm.c

diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 473a17e9a56ac87df909890d65fddb1335c966fb..ec7870c6af6dd8f3560ca119aef5a35cfb83bb85 100644 (file)
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -1043,14 +1043,15 @@ static int hv_cpuid_check_and_set(CPUState *cs, struct kvm_cpuid2 *cpuid,
     CPUX86State *env = &cpu->env;
     uint32_t r, fw, bits;
     uint64_t deps;
-    int i, dep_feat = 0;
+    int i, dep_feat;
 
     if (!hyperv_feat_enabled(cpu, feature) && !cpu->hyperv_passthrough) {
         return 0;
     }
 
     deps = kvm_hyperv_properties[feature].dependencies;
-    while ((dep_feat = find_next_bit(&deps, 64, dep_feat)) < 64) {
+    while (deps) {
+        dep_feat = ctz64(deps);
         if (!(hyperv_feat_enabled(cpu, dep_feat))) {
                 fprintf(stderr,
                         "Hyper-V %s requires Hyper-V %s\n",
@@ -1058,7 +1059,7 @@ static int hv_cpuid_check_and_set(CPUState *cs, struct kvm_cpuid2 *cpuid,
                         kvm_hyperv_properties[dep_feat].desc);
                 return 1;
         }
-        dep_feat++;
+        deps &= ~(1ull << dep_feat);
     }
 
     for (i = 0; i < ARRAY_SIZE(kvm_hyperv_properties[feature].flags); i++) {