i386/kvm: initialize struct at full before ioctl call

Not the whole structure is initialized before passing it to the KVM.
Reduce the number of Valgrind reports.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Message-Id: <1564502498-805893-4-git-send-email-andrey.shinkevich@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 608bb44270f500f489c19298d5d2e5458323f9b6..615dfce9093b5e06874c1743125b3e8381c6ea1d 100644 (file)
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -193,6 +193,7 @@ static int kvm_get_tsc(CPUState *cs)
         return 0;
     }
 
+    memset(&msr_data, 0, sizeof(msr_data));
     msr_data.info.nmsrs = 1;
     msr_data.entries[0].index = MSR_IA32_TSC;
     env->tsc_valid = !runstate_is_running();
@@ -1709,6 +1710,7 @@ int kvm_arch_init_vcpu(CPUState *cs)
 
     if (has_xsave) {
         env->xsave_buf = qemu_memalign(4096, sizeof(struct kvm_xsave));
+        memset(env->xsave_buf, 0, sizeof(struct kvm_xsave));
     }
 
     max_nested_state_len = kvm_max_nested_state_length();
@@ -3491,6 +3493,7 @@ static int kvm_put_debugregs(X86CPU *cpu)
         return 0;
     }
 
+    memset(&dbgregs, 0, sizeof(dbgregs));
     for (i = 0; i < 4; i++) {
         dbgregs.db[i] = env->dr[i];
     }