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target/loongarch: fix vcpu reset command word issue

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When the KVM_REG_LOONGARCH_VCPU_RESET command word
is sent to the kernel through the kvm_set_one_reg interface,
the parameter source needs to be a legal address,
otherwise the kernel will return an error and the command word
will fail to be sent.

Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
This commit is contained in:
Xianglai Li 2025-02-12 09:56:19 +08:00 • committed by Bibo Mao
parent b69801dd6b
commit b61b9d8913
1 changed files with 8 additions and 1 deletions
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9
target/loongarch/kvm/kvm.c
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@ -581,9 +581,16 @@ static int kvm_loongarch_get_lbt(CPUState *cs)
void kvm_arch_reset_vcpu(CPUState *cs)
{
CPULoongArchState *env = cpu_env(cs);
int ret = 0;
uint64_t unused = 0;
env->mp_state = KVM_MP_STATE_RUNNABLE;
kvm_set_one_reg(cs, KVM_REG_LOONGARCH_VCPU_RESET, 0);
ret = kvm_set_one_reg(cs, KVM_REG_LOONGARCH_VCPU_RESET, &unused);
if (ret) {
error_report("Failed to set KVM_REG_LOONGARCH_VCPU_RESET: %s",
strerror(errno));
exit(EXIT_FAILURE);
}
}
static int kvm_loongarch_get_mpstate(CPUState *cs)