From: Marc Zyngier <marc.zyngier@arm.com>
To: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Christoffer Dall <christoffer.dall@linaro.org>,
Eric Auger <eric.auger@redhat.com>,
Shanker Donthineni <shankerd@codeaurora.org>,
Mark Rutland <mark.rutland@arm.com>,
Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>,
Andre Przywara <Andre.Przywara@arm.com>
Subject: [PATCH v5 02/26] KVM: arm/arm64: register irq bypass consumer on ARM/ARM64
Date: Fri, 27 Oct 2017 15:28:31 +0100 [thread overview]
Message-ID: <20171027142855.21584-3-marc.zyngier@arm.com> (raw)
In-Reply-To: <20171027142855.21584-1-marc.zyngier@arm.com>
From: Eric Auger <eric.auger@redhat.com>
This patch selects IRQ_BYPASS_MANAGER and HAVE_KVM_IRQ_BYPASS
configs for ARM/ARM64.
kvm_arch_has_irq_bypass() now is implemented and returns true.
As a consequence the irq bypass consumer will be registered for
ARM/ARM64 with the forwarding callbacks:
- stop/start: halt/resume guest execution
- add/del_producer: set/unset forwarding at vgic/irqchip level
We don't have any actual support yet, so nothing gets actually
forwarded.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
[maz: dropped the DEOI stuff for the time being in order to
reduce the dependency chain, amended commit message]
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
arch/arm/kvm/Kconfig | 3 +++
arch/arm64/kvm/Kconfig | 3 +++
virt/kvm/arm/arm.c | 40 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 46 insertions(+)
diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig
index 90d0176fb30d..4e2b192a030a 100644
--- a/arch/arm/kvm/Kconfig
+++ b/arch/arm/kvm/Kconfig
@@ -3,6 +3,7 @@
#
source "virt/kvm/Kconfig"
+source "virt/lib/Kconfig"
menuconfig VIRTUALIZATION
bool "Virtualization"
@@ -35,6 +36,8 @@ config KVM
select HAVE_KVM_IRQCHIP
select HAVE_KVM_IRQ_ROUTING
select HAVE_KVM_MSI
+ select IRQ_BYPASS_MANAGER
+ select HAVE_KVM_IRQ_BYPASS
depends on ARM_VIRT_EXT && ARM_LPAE && ARM_ARCH_TIMER
---help---
Support hosting virtualized guest machines.
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 52cb7ad9b2fd..7e0d6e63cc71 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -3,6 +3,7 @@
#
source "virt/kvm/Kconfig"
+source "virt/lib/Kconfig"
menuconfig VIRTUALIZATION
bool "Virtualization"
@@ -35,6 +36,8 @@ config KVM
select HAVE_KVM_MSI
select HAVE_KVM_IRQCHIP
select HAVE_KVM_IRQ_ROUTING
+ select IRQ_BYPASS_MANAGER
+ select HAVE_KVM_IRQ_BYPASS
---help---
Support hosting virtualized guest machines.
We don't support KVM with 16K page tables yet, due to the multiple
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index b9f68e4add71..7ac4ecba9ebd 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -27,6 +27,8 @@
#include <linux/mman.h>
#include <linux/sched.h>
#include <linux/kvm.h>
+#include <linux/kvm_irqfd.h>
+#include <linux/irqbypass.h>
#include <trace/events/kvm.h>
#include <kvm/arm_pmu.h>
@@ -1449,6 +1451,44 @@ struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr)
return NULL;
}
+bool kvm_arch_has_irq_bypass(void)
+{
+ return true;
+}
+
+int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *cons,
+ struct irq_bypass_producer *prod)
+{
+ struct kvm_kernel_irqfd *irqfd =
+ container_of(cons, struct kvm_kernel_irqfd, consumer);
+
+ return 0;
+}
+void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *cons,
+ struct irq_bypass_producer *prod)
+{
+ struct kvm_kernel_irqfd *irqfd =
+ container_of(cons, struct kvm_kernel_irqfd, consumer);
+
+ return;
+}
+
+void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *cons)
+{
+ struct kvm_kernel_irqfd *irqfd =
+ container_of(cons, struct kvm_kernel_irqfd, consumer);
+
+ kvm_arm_halt_guest(irqfd->kvm);
+}
+
+void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *cons)
+{
+ struct kvm_kernel_irqfd *irqfd =
+ container_of(cons, struct kvm_kernel_irqfd, consumer);
+
+ kvm_arm_resume_guest(irqfd->kvm);
+}
+
/**
* Initialize Hyp-mode and memory mappings on all CPUs.
*/
--
2.11.0
next prev parent reply other threads:[~2017-10-27 14:42 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-27 14:28 [PATCH v5 00/26] KVM/ARM: Add support for GICv4 Marc Zyngier
2017-10-27 14:28 ` [PATCH v5 01/26] irqchip/gic-v3-its: Setup VLPI properties at map time Marc Zyngier
2017-10-30 6:46 ` Christoffer Dall
2017-10-27 14:28 ` Marc Zyngier [this message]
2017-10-30 6:47 ` [PATCH v5 02/26] KVM: arm/arm64: register irq bypass consumer on ARM/ARM64 Christoffer Dall
2017-10-27 14:28 ` [PATCH v5 03/26] KVM: arm/arm64: vgic: restructure kvm_vgic_(un)map_phys_irq Marc Zyngier
2017-10-27 14:28 ` [PATCH v5 04/26] KVM: arm: Select ARM_GIC_V3 and ARM_GIC_V3_ITS Marc Zyngier
2017-10-27 14:28 ` [PATCH v5 05/26] KVM: arm/arm64: vgic: Move kvm_vgic_destroy call around Marc Zyngier
2017-10-27 14:28 ` [PATCH v5 06/26] KVM: arm/arm64: vITS: Add MSI translation helpers Marc Zyngier
2017-11-07 20:34 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 07/26] KVM: arm/arm64: vITS: Add a helper to update the affinity of an LPI Marc Zyngier
2017-11-07 13:44 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 08/26] KVM: arm/arm64: GICv4: Add property field and per-VM predicate Marc Zyngier
2017-11-07 20:30 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 09/26] KVM: arm/arm64: GICv4: Add init/teardown of the per-VM vPE irq domain Marc Zyngier
2017-11-07 13:08 ` Auger Eric
2017-11-10 8:20 ` Christoffer Dall
2017-11-10 8:55 ` Marc Zyngier
2017-11-07 13:09 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 10/26] KVM: arm/arm64: GICv4: Wire mapping/unmapping of VLPIs in VFIO irq bypass Marc Zyngier
2017-11-07 13:06 ` Auger Eric
2017-11-07 14:42 ` Marc Zyngier
2017-11-07 15:59 ` Auger Eric
2017-11-08 11:30 ` Marc Zyngier
2017-11-10 8:28 ` Christoffer Dall
2017-11-10 9:05 ` Marc Zyngier
2017-11-10 9:41 ` Christoffer Dall
2017-10-27 14:28 ` [PATCH v5 11/26] KVM: arm/arm64: GICv4: Handle INT command applied to a VLPI Marc Zyngier
2017-11-07 20:15 ` Auger Eric
2017-11-08 11:40 ` Marc Zyngier
2017-11-08 14:14 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 12/26] KVM: arm/arm64: GICv4: Unmap VLPI when freeing an LPI Marc Zyngier
2017-11-07 20:28 ` Auger Eric
2017-11-08 11:52 ` Marc Zyngier
2017-11-08 14:14 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 13/26] KVM: arm/arm64: GICv4: Propagate affinity changes to the physical ITS Marc Zyngier
2017-11-07 21:01 ` Auger Eric
2017-11-08 12:05 ` Marc Zyngier
2017-10-27 14:28 ` [PATCH v5 14/26] KVM: arm/arm64: GICv4: Handle CLEAR applied to a VLPI Marc Zyngier
2017-11-07 21:04 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 15/26] KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE Marc Zyngier
2017-11-07 21:06 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 16/26] KVM: arm/arm64: GICv4: Propagate property updates to VLPIs Marc Zyngier
2017-11-07 21:28 ` Auger Eric
2017-11-08 15:08 ` Marc Zyngier
2017-11-10 8:37 ` Christoffer Dall
2017-11-10 8:58 ` Marc Zyngier
2017-10-27 14:28 ` [PATCH v5 17/26] KVM: arm/arm64: GICv4: Handle INVALL applied to a vPE Marc Zyngier
2017-11-07 21:23 ` Auger Eric
2017-11-10 8:41 ` Christoffer Dall
2017-11-10 8:56 ` Marc Zyngier
2017-10-27 14:28 ` [PATCH v5 18/26] KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint Marc Zyngier
2017-11-07 21:38 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 19/26] KVM: arm/arm64: GICv4: Add doorbell interrupt handling Marc Zyngier
2017-11-07 21:43 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 20/26] KVM: arm/arm64: GICv4: Use the doorbell interrupt as an unblocking source Marc Zyngier
2017-11-07 21:45 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 21/26] KVM: arm/arm64: GICv4: Hook vPE scheduling into vgic flush/sync Marc Zyngier
2017-11-07 21:54 ` Auger Eric
2017-11-07 22:14 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 22/26] KVM: arm/arm64: GICv4: Enable virtual cpuif if VLPIs can be delivered Marc Zyngier
2017-11-08 8:46 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 23/26] KVM: arm/arm64: GICv4: Prevent a VM using GICv4 from being saved Marc Zyngier
2017-11-07 15:24 ` Auger Eric
2017-11-07 15:38 ` Marc Zyngier
2017-11-07 16:12 ` Auger Eric
2017-11-07 16:34 ` Marc Zyngier
2017-11-07 22:24 ` Auger Eric
2017-11-08 9:35 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 24/26] KVM: arm/arm64: GICv4: Prevent userspace from changing doorbell affinity Marc Zyngier
2017-10-30 6:51 ` Christoffer Dall
2017-11-07 22:17 ` Auger Eric
2017-10-27 14:28 ` [PATCH v5 25/26] KVM: arm/arm64: GICv4: Enable VLPI support Marc Zyngier
2017-11-08 8:44 ` Auger Eric
2017-11-08 15:14 ` Marc Zyngier
2017-10-27 14:28 ` [PATCH v5 26/26] KVM: arm/arm64: GICv4: Theory of operations Marc Zyngier
2017-11-08 9:13 ` Auger Eric
2017-11-08 15:19 ` Marc Zyngier
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