From e23f62f76acea232d4def5d4eb21709a2b575f14 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Fri, 9 Jun 2017 12:49:46 +0100 Subject: KVM: arm64: Enable GICv3 Group-0 sysreg trapping via command-line Now that we're able to safely handle Group-0 sysreg access, let's give the user the opportunity to enable it by passing a specific command-line option (vgic_v3.group0_trap). Tested-by: Alexander Graf Acked-by: David Daney Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall --- virt/kvm/arm/vgic/vgic-v3.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'virt/kvm/arm') diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c index 39046ee5be25..828ca7f9a060 100644 --- a/virt/kvm/arm/vgic/vgic-v3.c +++ b/virt/kvm/arm/vgic/vgic-v3.c @@ -438,6 +438,12 @@ out: DEFINE_STATIC_KEY_FALSE(vgic_v3_cpuif_trap); +static int __init early_group0_trap_cfg(char *buf) +{ + return strtobool(buf, &group0_trap); +} +early_param("kvm-arm.vgic_v3_group0_trap", early_group0_trap_cfg); + static int __init early_group1_trap_cfg(char *buf) { return strtobool(buf, &group1_trap); -- cgit v1.2.3