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-rw-r--r--Documentation/admin-guide/kernel-parameters.txt4
-rw-r--r--virt/kvm/arm/vgic/vgic-v3.c6
2 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 42fe395be6c8..88bdc421351f 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1829,6 +1829,10 @@
for all guests.
Default is 1 (enabled) if in 64-bit or 32-bit PAE mode.
+ kvm-arm.vgic_v3_group0_trap=
+ [KVM,ARM] Trap guest accesses to GICv3 group-0
+ system registers
+
kvm-arm.vgic_v3_group1_trap=
[KVM,ARM] Trap guest accesses to GICv3 group-1
system registers
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);