[PATCH v8 3/5] KVM: arm/arm64: implement kvm_arch_intc_initialized

Eric Auger
2015-01-19T16:43:11Z

On arm/arm64 the VGIC is dynamically instantiated and it is useful
to expose its state, especially for irqfd setup.

This patch defines __KVM_HAVE_ARCH_INTC_INITIALIZED and
implements kvm_arch_intc_initialized.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>

---

v7 -> v8:
- add Andre's Reviewed-by

v6 -> v7:
- usage of the new function in irqfd is introduced in previous patch
file.
- Changed the title and the commit message accordingly

v5 -> v6:
- remove kvm_arch_intc_initialized declaration from
architecture specific kvm_host.h since it is now in
generic kvm_host.h
- squash v5 patch files 3 & 4
---
arch/arm/include/asm/kvm_host.h | 2 ++
arch/arm/kvm/arm.c | 5 +++++
arch/arm64/include/asm/kvm_host.h | 2 ++
3 files changed, 9 insertions(+)

diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index 254e065..8f87259 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -27,6 +27,8 @@
#include <asm/fpstate.h>
#include <kvm/arm_arch_timer.h>

+#define __KVM_HAVE_ARCH_INTC_INITIALIZED
+
#if defined(CONFIG_KVM_ARM_MAX_VCPUS)
#define KVM_MAX_VCPUS CONFIG_KVM_ARM_MAX_VCPUS
#else
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 2d6d910..9c905b4 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -454,6 +454,11 @@ static int kvm_vcpu_first_run_init(struct kvm_vcpu *vcpu)
return 0;
}

+bool kvm_arch_intc_initialized(struct kvm *kvm)
+{
+ return vgic_initialized(kvm);
+}
+
static void vcpu_pause(struct kvm_vcpu *vcpu)
{
wait_queue_head_t *wq = kvm_arch_vcpu_wq(vcpu);
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 0b7dfdb..dfb6135 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -28,6 +28,8 @@
#include <asm/kvm_asm.h>
#include <asm/kvm_mmio.h>

+#define __KVM_HAVE_ARCH_INTC_INITIALIZED
+
#if defined(CONFIG_KVM_ARM_MAX_VCPUS)
#define KVM_MAX_VCPUS CONFIG_KVM_ARM_MAX_VCPUS
#else
--
1.9.1