From: Marc Zyngier <marc.zyngier@arm.com>
To: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: Julien Thierry <julien.thierry@arm.com>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Christoffer Dall <christoffer.dall@arm.com>,
Eric Auger <eric.auger@redhat.com>,
Zenghui Yu <yuzenghui@huawei.com>,
"Raslan, KarimAllah" <karahmed@amazon.de>,
"Saidi, Ali" <alisaidi@amazon.com>
Subject: [PATCH v2 3/9] KVM: arm/arm64: vgic-its: Add MSI-LPI translation cache invalidation
Date: Tue, 11 Jun 2019 18:03:30 +0100 [thread overview]
Message-ID: <20190611170336.121706-4-marc.zyngier@arm.com> (raw)
In-Reply-To: <20190611170336.121706-1-marc.zyngier@arm.com>
There's a number of cases where we need to invalidate the caching
of translations, so let's add basic support for that.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
virt/kvm/arm/vgic/vgic-its.c | 23 +++++++++++++++++++++++
virt/kvm/arm/vgic/vgic.h | 1 +
2 files changed, 24 insertions(+)
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index ce9bcddeb7f1..9b6b66204b97 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -546,6 +546,29 @@ static unsigned long vgic_mmio_read_its_idregs(struct kvm *kvm,
return 0;
}
+void vgic_its_invalidate_cache(struct kvm *kvm)
+{
+ struct vgic_dist *dist = &kvm->arch.vgic;
+ struct vgic_translation_cache_entry *cte;
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&dist->lpi_list_lock, flags);
+
+ list_for_each_entry(cte, &dist->lpi_translation_cache, entry) {
+ /*
+ * If we hit a NULL entry, there is nothing after this
+ * point.
+ */
+ if (!cte->irq)
+ break;
+
+ __vgic_put_lpi_locked(kvm, cte->irq);
+ cte->irq = NULL;
+ }
+
+ raw_spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
+}
+
int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
u32 devid, u32 eventid, struct vgic_irq **irq)
{
diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h
index afac2fed7df4..072f810dc441 100644
--- a/virt/kvm/arm/vgic/vgic.h
+++ b/virt/kvm/arm/vgic/vgic.h
@@ -319,6 +319,7 @@ int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
struct vgic_its *vgic_msi_to_its(struct kvm *kvm, struct kvm_msi *msi);
void vgic_lpi_translation_cache_init(struct kvm *kvm);
void vgic_lpi_translation_cache_destroy(struct kvm *kvm);
+void vgic_its_invalidate_cache(struct kvm *kvm);
bool vgic_supports_direct_msis(struct kvm *kvm);
int vgic_v4_init(struct kvm *kvm);
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <marc.zyngier@arm.com>
To: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: "Raslan, KarimAllah" <karahmed@amazon.de>,
"Saidi, Ali" <alisaidi@amazon.com>
Subject: [PATCH v2 3/9] KVM: arm/arm64: vgic-its: Add MSI-LPI translation cache invalidation
Date: Tue, 11 Jun 2019 18:03:30 +0100 [thread overview]
Message-ID: <20190611170336.121706-4-marc.zyngier@arm.com> (raw)
In-Reply-To: <20190611170336.121706-1-marc.zyngier@arm.com>
There's a number of cases where we need to invalidate the caching
of translations, so let's add basic support for that.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
virt/kvm/arm/vgic/vgic-its.c | 23 +++++++++++++++++++++++
virt/kvm/arm/vgic/vgic.h | 1 +
2 files changed, 24 insertions(+)
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index ce9bcddeb7f1..9b6b66204b97 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -546,6 +546,29 @@ static unsigned long vgic_mmio_read_its_idregs(struct kvm *kvm,
return 0;
}
+void vgic_its_invalidate_cache(struct kvm *kvm)
+{
+ struct vgic_dist *dist = &kvm->arch.vgic;
+ struct vgic_translation_cache_entry *cte;
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&dist->lpi_list_lock, flags);
+
+ list_for_each_entry(cte, &dist->lpi_translation_cache, entry) {
+ /*
+ * If we hit a NULL entry, there is nothing after this
+ * point.
+ */
+ if (!cte->irq)
+ break;
+
+ __vgic_put_lpi_locked(kvm, cte->irq);
+ cte->irq = NULL;
+ }
+
+ raw_spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
+}
+
int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
u32 devid, u32 eventid, struct vgic_irq **irq)
{
diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h
index afac2fed7df4..072f810dc441 100644
--- a/virt/kvm/arm/vgic/vgic.h
+++ b/virt/kvm/arm/vgic/vgic.h
@@ -319,6 +319,7 @@ int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
struct vgic_its *vgic_msi_to_its(struct kvm *kvm, struct kvm_msi *msi);
void vgic_lpi_translation_cache_init(struct kvm *kvm);
void vgic_lpi_translation_cache_destroy(struct kvm *kvm);
+void vgic_its_invalidate_cache(struct kvm *kvm);
bool vgic_supports_direct_msis(struct kvm *kvm);
int vgic_v4_init(struct kvm *kvm);
--
2.20.1
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <marc.zyngier@arm.com>
To: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>,
"Raslan, KarimAllah" <karahmed@amazon.de>,
Julien Thierry <julien.thierry@arm.com>,
Christoffer Dall <christoffer.dall@arm.com>,
Eric Auger <eric.auger@redhat.com>,
James Morse <james.morse@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
"Saidi, Ali" <alisaidi@amazon.com>
Subject: [PATCH v2 3/9] KVM: arm/arm64: vgic-its: Add MSI-LPI translation cache invalidation
Date: Tue, 11 Jun 2019 18:03:30 +0100 [thread overview]
Message-ID: <20190611170336.121706-4-marc.zyngier@arm.com> (raw)
In-Reply-To: <20190611170336.121706-1-marc.zyngier@arm.com>
There's a number of cases where we need to invalidate the caching
of translations, so let's add basic support for that.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
virt/kvm/arm/vgic/vgic-its.c | 23 +++++++++++++++++++++++
virt/kvm/arm/vgic/vgic.h | 1 +
2 files changed, 24 insertions(+)
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index ce9bcddeb7f1..9b6b66204b97 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -546,6 +546,29 @@ static unsigned long vgic_mmio_read_its_idregs(struct kvm *kvm,
return 0;
}
+void vgic_its_invalidate_cache(struct kvm *kvm)
+{
+ struct vgic_dist *dist = &kvm->arch.vgic;
+ struct vgic_translation_cache_entry *cte;
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&dist->lpi_list_lock, flags);
+
+ list_for_each_entry(cte, &dist->lpi_translation_cache, entry) {
+ /*
+ * If we hit a NULL entry, there is nothing after this
+ * point.
+ */
+ if (!cte->irq)
+ break;
+
+ __vgic_put_lpi_locked(kvm, cte->irq);
+ cte->irq = NULL;
+ }
+
+ raw_spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
+}
+
int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
u32 devid, u32 eventid, struct vgic_irq **irq)
{
diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h
index afac2fed7df4..072f810dc441 100644
--- a/virt/kvm/arm/vgic/vgic.h
+++ b/virt/kvm/arm/vgic/vgic.h
@@ -319,6 +319,7 @@ int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
struct vgic_its *vgic_msi_to_its(struct kvm *kvm, struct kvm_msi *msi);
void vgic_lpi_translation_cache_init(struct kvm *kvm);
void vgic_lpi_translation_cache_destroy(struct kvm *kvm);
+void vgic_its_invalidate_cache(struct kvm *kvm);
bool vgic_supports_direct_msis(struct kvm *kvm);
int vgic_v4_init(struct kvm *kvm);
--
2.20.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-06-11 17:03 UTC|newest]
Thread overview: 118+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-11 17:03 [PATCH v2 0/9] KVM: arm/arm64: vgic: ITS translation cache Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` [PATCH v2 1/9] KVM: arm/arm64: vgic: Add LPI translation cache definition Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-12 8:16 ` Julien Thierry
2019-06-12 8:16 ` Julien Thierry
2019-06-12 8:16 ` Julien Thierry
2019-06-12 8:49 ` Julien Thierry
2019-06-12 8:49 ` Julien Thierry
2019-06-12 8:49 ` Julien Thierry
2019-06-12 9:52 ` Marc Zyngier
2019-06-12 9:52 ` Marc Zyngier
2019-06-12 10:58 ` Julien Thierry
2019-06-12 10:58 ` Julien Thierry
2019-06-12 10:58 ` Julien Thierry
2019-06-12 12:28 ` Julien Thierry
2019-06-12 12:28 ` Julien Thierry
2019-06-12 12:28 ` Julien Thierry
2019-07-23 12:43 ` Auger Eric
2019-07-23 12:43 ` Auger Eric
2019-07-23 12:43 ` Auger Eric
2019-06-11 17:03 ` [PATCH v2 2/9] KVM: arm/arm64: vgic: Add __vgic_put_lpi_locked primitive Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier [this message]
2019-06-11 17:03 ` [PATCH v2 3/9] KVM: arm/arm64: vgic-its: Add MSI-LPI translation cache invalidation Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-07-23 12:39 ` Auger Eric
2019-07-23 12:39 ` Auger Eric
2019-07-23 12:39 ` Auger Eric
2019-06-11 17:03 ` [PATCH v2 4/9] KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on specific commands Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-07-01 12:38 ` Auger Eric
2019-07-01 12:38 ` Auger Eric
2019-07-01 12:38 ` Auger Eric
2019-07-22 10:54 ` Marc Zyngier
2019-07-22 10:54 ` Marc Zyngier
2019-07-22 10:54 ` Marc Zyngier
2019-07-23 12:25 ` Auger Eric
2019-07-23 12:25 ` Auger Eric
2019-07-23 12:25 ` Auger Eric
2019-07-23 12:43 ` Marc Zyngier
2019-07-23 12:43 ` Marc Zyngier
2019-07-23 12:43 ` Marc Zyngier
2019-07-23 12:47 ` Auger Eric
2019-07-23 12:47 ` Auger Eric
2019-07-23 12:47 ` Auger Eric
2019-07-23 12:50 ` Marc Zyngier
2019-07-23 12:50 ` Marc Zyngier
2019-07-23 12:50 ` Marc Zyngier
2019-06-11 17:03 ` [PATCH v2 5/9] KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on disabling LPIs Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-07-23 15:09 ` Auger Eric
2019-07-23 15:09 ` Auger Eric
2019-07-23 15:09 ` Auger Eric
2019-06-11 17:03 ` [PATCH v2 6/9] KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on vgic teardown Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-07-23 15:10 ` Auger Eric
2019-07-23 15:10 ` Auger Eric
2019-07-23 15:10 ` Auger Eric
2019-06-11 17:03 ` [PATCH v2 7/9] KVM: arm/arm64: vgic-its: Cache successful MSI->LPI translation Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-25 11:50 ` Zenghui Yu
2019-06-25 11:50 ` Zenghui Yu
2019-06-25 11:50 ` Zenghui Yu
2019-06-25 12:31 ` Marc Zyngier
2019-06-25 12:31 ` Marc Zyngier
2019-06-25 12:31 ` Marc Zyngier
2019-06-25 16:00 ` Zenghui Yu
2019-06-25 16:00 ` Zenghui Yu
2019-06-25 16:00 ` Zenghui Yu
2019-06-26 3:54 ` Zenghui Yu
2019-06-26 3:54 ` Zenghui Yu
2019-06-26 3:54 ` Zenghui Yu
2019-06-26 7:55 ` Marc Zyngier
2019-06-26 7:55 ` Marc Zyngier
2019-07-23 15:21 ` Auger Eric
2019-07-23 15:21 ` Auger Eric
2019-07-23 15:21 ` Auger Eric
2019-06-11 17:03 ` [PATCH v2 8/9] KVM: arm/arm64: vgic-its: Check the LPI translation cache on MSI injection Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-07-23 15:10 ` Auger Eric
2019-07-23 15:10 ` Auger Eric
2019-07-23 15:10 ` Auger Eric
2019-07-23 15:45 ` Marc Zyngier
2019-07-23 15:45 ` Marc Zyngier
2019-07-23 15:45 ` Marc Zyngier
2019-07-24 7:41 ` Auger Eric
2019-07-24 7:41 ` Auger Eric
2019-07-24 7:41 ` Auger Eric
2019-06-11 17:03 ` [PATCH v2 9/9] KVM: arm/arm64: vgic-irqfd: Implement kvm_arch_set_irq_inatomic Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-06-11 17:03 ` Marc Zyngier
2019-07-23 15:14 ` Auger Eric
2019-07-23 15:14 ` Auger Eric
2019-07-23 15:14 ` Auger Eric
2019-07-25 8:24 ` Marc Zyngier
2019-07-25 8:24 ` Marc Zyngier
2019-07-25 8:24 ` Marc Zyngier
2019-07-23 11:14 ` [PATCH v2 0/9] KVM: arm/arm64: vgic: ITS translation cache Andre Przywara
2019-07-23 11:14 ` Andre Przywara
2019-07-23 11:14 ` Andre Przywara
2019-07-25 8:50 ` Marc Zyngier
2019-07-25 8:50 ` Marc Zyngier
2019-07-25 8:50 ` Marc Zyngier
2019-07-25 10:01 ` Andre Przywara
2019-07-25 10:01 ` Andre Przywara
2019-07-25 10:01 ` Andre Przywara
2019-07-25 15:37 ` Marc Zyngier
2019-07-25 15:37 ` Marc Zyngier
2019-07-25 15:37 ` Marc Zyngier
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