From: Andrew Jones <drjones@redhat.com>
Date: Sun, 4 Jun 2017 14:44:01 +0200
Subject: KVM: arm/arm64: timer: remove request-less vcpu kick
Patch-mainline: v4.13-rc1
Git-commit: 1b6502e5bc5ef16179bcd812dfa43d8bbb5689d4
References: bsc#1077761
The timer work is only scheduled for a VCPU when that VCPU is
blocked. This means we only need to wake it up, not kick (IPI)
it. While calling kvm_vcpu_kick() would just do the wake up,
and not kick, anyway, let's change this to avoid request-less
vcpu kicks, as they're generally not a good idea (see
"Request-less VCPU Kicks" in
Documentation/virtual/kvm/vcpu-requests.rst)
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Acked-by: Alexander Graf <agraf@suse.de>
---
virt/kvm/arm/arch_timer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -95,7 +95,7 @@
* If the vcpu is blocked we want to wake it up so that it will see
* the timer has expired when entering the guest.
*/
- kvm_vcpu_kick(vcpu);
+ kvm_vcpu_wake_up(vcpu);
}
static u64 kvm_timer_compute_delta(struct arch_timer_context *timer_ctx)