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LoongArch: KVM: Move LBT capability check in exception handler

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Like FPU exception handler, check LBT capability in the LBT exception
handler rather than function kvm_own_lbt().

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Bibo Mao 2026-02-06 09:27:47 +08:00 committed by Huacai Chen
parent 37da26e0e8
commit b1388a9598
2 changed files with 3 additions and 4 deletions
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4
arch/loongarch/kvm/exit.c
View File

@ -820,8 +820,10 @@ static int kvm_handle_lasx_disabled(struct kvm_vcpu *vcpu, int ecode)
static int kvm_handle_lbt_disabled(struct kvm_vcpu *vcpu, int ecode)
{
if (kvm_own_lbt(vcpu))
if (!kvm_guest_has_lbt(&vcpu->arch))
kvm_queue_exception(vcpu, EXCCODE_INE, 0);
else
kvm_own_lbt(vcpu);
return RESUME_GUEST;
}

3
arch/loongarch/kvm/vcpu.c
View File

@ -1304,9 +1304,6 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
#ifdef CONFIG_CPU_HAS_LBT
int kvm_own_lbt(struct kvm_vcpu *vcpu)
{
if (!kvm_guest_has_lbt(&vcpu->arch))
return -EINVAL;
preempt_disable();
if (!(vcpu->arch.aux_inuse & KVM_LARCH_LBT)) {
set_csr_euen(CSR_EUEN_LBTEN);