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[Qemu-block] [PATCH 3/3] i386/kvm: initialize struct at full before ioct
From: |
Andrey Shinkevich |
Subject: |
[Qemu-block] [PATCH 3/3] i386/kvm: initialize struct at full before ioctl call |
Date: |
Tue, 30 Jul 2019 19:01:38 +0300 |
Not the whole structure is initialized before passing it to the KVM.
Reduce the number of Valgrind reports.
Signed-off-by: Andrey Shinkevich <address@hidden>
---
target/i386/kvm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index dbbb137..ed57e31 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -190,6 +190,7 @@ 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();
@@ -1706,6 +1707,7 @@ 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();
@@ -3477,6 +3479,7 @@ 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];
}
--
1.8.3.1
Re: [Qemu-block] [Qemu-devel] [PATCH 3/3] i386/kvm: initialize struct at full before ioctl call, Peter Maydell, 2019/07/30