From: Christoffer Dall <christoffer.dall@linaro.org>
To: "Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Subject: [PULL 3/5] KVM: arm/arm64: timer: Don't set irq as forwarded if no usable GIC
Date: Mon, 18 Dec 2017 11:00:55 +0100 [thread overview]
Message-ID: <20171218100057.7839-4-christoffer.dall@linaro.org> (raw)
In-Reply-To: <20171218100057.7839-1-christoffer.dall@linaro.org>
From: Marc Zyngier <marc.zyngier@arm.com>
If we don't have a usable GIC, do not try to set the vcpu affinity
as this is guaranteed to fail.
Reported-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---
include/kvm/arm_arch_timer.h | 2 +-
virt/kvm/arm/arch_timer.c | 13 ++++++++-----
virt/kvm/arm/arm.c | 2 +-
3 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h
index 6e45608b2399..9da6ce22803f 100644
--- a/include/kvm/arm_arch_timer.h
+++ b/include/kvm/arm_arch_timer.h
@@ -62,7 +62,7 @@ struct arch_timer_cpu {
bool enabled;
};
-int kvm_timer_hyp_init(void);
+int kvm_timer_hyp_init(bool);
int kvm_timer_enable(struct kvm_vcpu *vcpu);
int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu);
void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu);
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index f9555b1e7f15..aa9adfafe12b 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -720,7 +720,7 @@ static int kvm_timer_dying_cpu(unsigned int cpu)
return 0;
}
-int kvm_timer_hyp_init(void)
+int kvm_timer_hyp_init(bool has_gic)
{
struct arch_timer_kvm_info *info;
int err;
@@ -756,10 +756,13 @@ int kvm_timer_hyp_init(void)
return err;
}
- err = irq_set_vcpu_affinity(host_vtimer_irq, kvm_get_running_vcpus());
- if (err) {
- kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
- goto out_free_irq;
+ if (has_gic) {
+ err = irq_set_vcpu_affinity(host_vtimer_irq,
+ kvm_get_running_vcpus());
+ if (err) {
+ kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
+ goto out_free_irq;
+ }
}
kvm_info("virtual timer IRQ%d\n", host_vtimer_irq);
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index 6b60c98a6e22..2e43f9d42bd5 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -1326,7 +1326,7 @@ static int init_subsystems(void)
/*
* Init HYP architected timer support
*/
- err = kvm_timer_hyp_init();
+ err = kvm_timer_hyp_init(vgic_present);
if (err)
goto out;
--
2.14.2
WARNING: multiple messages have this Message-ID (diff)
From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PULL 3/5] KVM: arm/arm64: timer: Don't set irq as forwarded if no usable GIC
Date: Mon, 18 Dec 2017 11:00:55 +0100 [thread overview]
Message-ID: <20171218100057.7839-4-christoffer.dall@linaro.org> (raw)
In-Reply-To: <20171218100057.7839-1-christoffer.dall@linaro.org>
From: Marc Zyngier <marc.zyngier@arm.com>
If we don't have a usable GIC, do not try to set the vcpu affinity
as this is guaranteed to fail.
Reported-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---
include/kvm/arm_arch_timer.h | 2 +-
virt/kvm/arm/arch_timer.c | 13 ++++++++-----
virt/kvm/arm/arm.c | 2 +-
3 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h
index 6e45608b2399..9da6ce22803f 100644
--- a/include/kvm/arm_arch_timer.h
+++ b/include/kvm/arm_arch_timer.h
@@ -62,7 +62,7 @@ struct arch_timer_cpu {
bool enabled;
};
-int kvm_timer_hyp_init(void);
+int kvm_timer_hyp_init(bool);
int kvm_timer_enable(struct kvm_vcpu *vcpu);
int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu);
void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu);
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index f9555b1e7f15..aa9adfafe12b 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -720,7 +720,7 @@ static int kvm_timer_dying_cpu(unsigned int cpu)
return 0;
}
-int kvm_timer_hyp_init(void)
+int kvm_timer_hyp_init(bool has_gic)
{
struct arch_timer_kvm_info *info;
int err;
@@ -756,10 +756,13 @@ int kvm_timer_hyp_init(void)
return err;
}
- err = irq_set_vcpu_affinity(host_vtimer_irq, kvm_get_running_vcpus());
- if (err) {
- kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
- goto out_free_irq;
+ if (has_gic) {
+ err = irq_set_vcpu_affinity(host_vtimer_irq,
+ kvm_get_running_vcpus());
+ if (err) {
+ kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
+ goto out_free_irq;
+ }
}
kvm_info("virtual timer IRQ%d\n", host_vtimer_irq);
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index 6b60c98a6e22..2e43f9d42bd5 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -1326,7 +1326,7 @@ static int init_subsystems(void)
/*
* Init HYP architected timer support
*/
- err = kvm_timer_hyp_init();
+ err = kvm_timer_hyp_init(vgic_present);
if (err)
goto out;
--
2.14.2
next prev parent reply other threads:[~2017-12-18 10:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-18 10:00 [PULL 0/5] KVM/ARM Fixes for v4.15 - Round 2 Christoffer Dall
2017-12-18 10:00 ` Christoffer Dall
2017-12-18 10:00 ` [PULL 1/5] arm64: kvm: Prevent restoring stale PMSCR_EL1 for vcpu Christoffer Dall
2017-12-18 10:00 ` Christoffer Dall
2017-12-18 10:00 ` [PULL 2/5] KVM: arm/arm64: Fix HYP unmapping going off limits Christoffer Dall
2017-12-18 10:00 ` Christoffer Dall
2017-12-18 10:00 ` Christoffer Dall [this message]
2017-12-18 10:00 ` [PULL 3/5] KVM: arm/arm64: timer: Don't set irq as forwarded if no usable GIC Christoffer Dall
2017-12-18 10:00 ` [PULL 4/5] KVM: arm/arm64: Properly handle arch-timer IRQs after vtimer_save_state Christoffer Dall
2017-12-18 10:00 ` Christoffer Dall
2017-12-18 10:00 ` [PULL 5/5] KVM: arm/arm64: Fix timer enable flow Christoffer Dall
2017-12-18 10:00 ` Christoffer Dall
2017-12-18 11:56 ` [PULL 0/5] KVM/ARM Fixes for v4.15 - Round 2 Paolo Bonzini
2017-12-18 11:56 ` Paolo Bonzini
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