From f1dd77856eeb91c895ab38a735601b37f6566f6d Mon Sep 17 00:00:00 2001
From: Marc Zyngier <marc.zyngier@arm.com>
Date: Fri, 9 Jun 2017 12:49:54 +0100
Subject: [PATCH 172/174] KVM: arm64: vgic-v3: Log which GICv3 system registers
are trapped
Patch-mainline: Submitted, https://www.spinics.net/lists/arm-kernel/msg587082.html
References: bsc#1031492
In order to facilitate debug, let's log which class of GICv3 system
registers are trapped.
Tested-by: Alexander Graf <agraf@suse.de>
Acked-by: David Daney <david.daney@cavium.com>
Acked-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
---
virt/kvm/arm/vgic/vgic-v3.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c
index 91cf8b4..96ea597 100644
--- a/virt/kvm/arm/vgic/vgic-v3.c
+++ b/virt/kvm/arm/vgic/vgic-v3.c
@@ -518,7 +518,10 @@ int vgic_v3_probe(const struct gic_kvm_info *info)
#endif
if (group0_trap || group1_trap || common_trap) {
- kvm_info("GICv3 sysreg trapping enabled (reduced performance)\n");
+ kvm_info("GICv3 sysreg trapping enabled ([%s%s%s], reduced performance)\n",
+ group0_trap ? "G0" : "",
+ group1_trap ? "G1" : "",
+ common_trap ? "C" : "");
static_branch_enable(&vgic_v3_cpuif_trap);
}
--
1.8.5.6