Subject: [PATCH v5 50/69] KVM: arm64: nv: Load timer before the GIC

From: Marc Zyngier <[email-masked]>
Date: Mon, 29 Nov 2021 20:01:31 +0000

In order for vgic_v3_load_nested to be able to observe which timer
interrupts have the HW bit set for the current context, the timers
must have been loaded in the new mode and the right timer mapped
to their corresponding HW IRQs.

At the moment, we load the GIC first, meaning that timer interrupts
injected to an L2 guest will never have the HW bit set (we see the
old configuration).

Swapping the two loads solves this particular problem.

Signed-off-by: Marc Zyngier <[email-masked]>
---
 arch/arm64/kvm/arm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 1dbf63319b99..b04616bf1839 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -414,8 +414,8 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 
 	vcpu->cpu = cpu;
 
-	kvm_vgic_load(vcpu);
 	kvm_timer_vcpu_load(vcpu);
+	kvm_vgic_load(vcpu);
 	if (has_vhe())
 		kvm_vcpu_load_sysregs_vhe(vcpu);
 	kvm_arch_vcpu_load_fp(vcpu);
-- 
2.30.2

_______________________________________________
linux-arm-kernel mailing list
[email-masked]
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel