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i386/kvm: Do not sync nested state during runtime 

Writing the nested state e.g. after a vmport access can invalidate
important parts of the kernel-internal state, and it is not needed as
well. So leave this out from KVM_PUT_RUNTIME_STATE.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Message-Id: <bdd53f40-4e60-f3ae-7ec6-162198214953@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jan Kiszka 2019-07-22 06:00:08 +02:00 committed by Paolo Bonzini
parent 9c5aad84da
commit bec7156a45
1 changed files with 5 additions and 5 deletions
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10
target/i386/kvm.c
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@ -3563,12 +3563,12 @@ int kvm_arch_put_registers(CPUState *cpu, int level)
assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
ret = kvm_put_nested_state(x86_cpu);
if (ret < 0) {
return ret;
}
if (level >= KVM_PUT_RESET_STATE) {
ret = kvm_put_nested_state(x86_cpu);
if (ret < 0) {
return ret;
}
ret = kvm_put_msr_feature_control(x86_cpu);
if (ret < 0) {
return ret;