From 0d98d00b8d80bfdee95cf7e85f20f107377e2662 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 3 Mar 2016 15:43:58 +0000 Subject: arm64: KVM: vgic-v3: Reset LRs at boot time In order to let the GICv3 code be more lazy in the way it accesses the LRs, it is necessary to start with a clean slate. Let's reset the LRs on each CPU when the vgic is probed (which includes a round trip to EL2...). Reviewed-by: Christoffer Dall Signed-off-by: Marc Zyngier --- arch/arm64/kvm/hyp/vgic-v3-sr.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch/arm64/kvm/hyp') diff --git a/arch/arm64/kvm/hyp/vgic-v3-sr.c b/arch/arm64/kvm/hyp/vgic-v3-sr.c index 0db426e6c13e..81349479e17c 100644 --- a/arch/arm64/kvm/hyp/vgic-v3-sr.c +++ b/arch/arm64/kvm/hyp/vgic-v3-sr.c @@ -321,6 +321,15 @@ void __hyp_text __vgic_v3_restore_state(struct kvm_vcpu *vcpu) } } +void __hyp_text __vgic_v3_init_lrs(void) +{ + int max_lr_idx = vtr_to_max_lr_idx(read_gicreg(ICH_VTR_EL2)); + int i; + + for (i = 0; i <= max_lr_idx; i++) + __gic_v3_set_lr(0, i); +} + static u64 __hyp_text __vgic_v3_read_ich_vtr_el2(void) { return read_gicreg(ICH_VTR_EL2); -- cgit v1.2.3