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kvm: validate context for kvm cpu get/put operations

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Validate that KVM vcpu state is only read/written from cpu thread itself
or that cpu is stopped.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Jan Kiszka
2010-05-11 14:02:22 -03:00
committed by Marcelo Tosatti
parent ced6c05143
commit dbaa07c404
1 changed files with 4 additions and 0 deletions
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target-i386/kvm.c
+4
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@@ -949,6 +949,8 @@ int kvm_arch_put_registers(CPUState *env, int level)
{
int ret;
assert(cpu_is_stopped(env) || qemu_cpu_self(env));
ret = kvm_getput_regs(env, 1);
if (ret < 0)
return ret;
@@ -991,6 +993,8 @@ int kvm_arch_get_registers(CPUState *env)
{
int ret;
assert(cpu_is_stopped(env) || qemu_cpu_self(env));
ret = kvm_getput_regs(env, 0);
if (ret < 0)
return ret;