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LoongArch: KVM: Move LASX capability check in exception handler

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Like FPU exception handler, check LASX capability in the LASX exception
handler rather than function kvm_own_lasx(). Since LASX capability in
the function kvm_guest_has_lasx() implies FPU and LSX capability, only
checking kvm_guest_has_lasx() is OK here.

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 89b5dc5397
commit 37da26e0e8
2 changed files with 3 additions and 4 deletions
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4
arch/loongarch/kvm/exit.c
View File

@@ -810,8 +810,10 @@ static int kvm_handle_lsx_disabled(struct kvm_vcpu *vcpu, int ecode)
*/
static int kvm_handle_lasx_disabled(struct kvm_vcpu *vcpu, int ecode)
{
if (kvm_own_lasx(vcpu))
if (!kvm_guest_has_lasx(&vcpu->arch))
kvm_queue_exception(vcpu, EXCCODE_INE, 0);
else
kvm_own_lasx(vcpu);
return RESUME_GUEST;
}

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

@@ -1409,9 +1409,6 @@ int kvm_own_lsx(struct kvm_vcpu *vcpu)
/* Enable LASX and restore context */
int kvm_own_lasx(struct kvm_vcpu *vcpu)
{
if (!kvm_guest_has_fpu(&vcpu->arch) || !kvm_guest_has_lsx(&vcpu->arch) || !kvm_guest_has_lasx(&vcpu->arch))
return -EINVAL;
preempt_disable();
kvm_check_fcsr(vcpu, vcpu->arch.fpu.fcsr);