From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: Marc Zyngier <marc.zyngier@arm.com>,
Andre Przywara <Andre.Przywara@arm.com>,
"Raslan, KarimAllah" <karahmed@amazon.de>,
"Saidi, Ali" <alisaidi@amazon.com>
Subject: [PATCH v3 06/10] KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on ITS disable
Date: Thu, 25 Jul 2019 16:35:39 +0100 [thread overview]
Message-ID: <20190725153543.24386-7-maz@kernel.org> (raw)
In-Reply-To: <20190725153543.24386-1-maz@kernel.org>
From: Marc Zyngier <marc.zyngier@arm.com>
If an ITS gets disabled, we need to make sure that further interrupts
won't hit in the cache. For that, we invalidate the translation cache
when the ITS is disabled.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
virt/kvm/arm/vgic/vgic-its.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index 09a179820816..05406bd92ce9 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -1597,6 +1597,8 @@ static void vgic_mmio_write_its_ctlr(struct kvm *kvm, struct vgic_its *its,
goto out;
its->enabled = !!(val & GITS_CTLR_ENABLE);
+ if (!its->enabled)
+ vgic_its_invalidate_cache(kvm);
/*
* Try to process any pending commands. This function bails out early
--
2.20.1
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next prev parent reply other threads:[~2019-07-25 15:36 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-25 15:35 [PATCH v3 00/10] KVM: arm/arm64: vgic: ITS translation cache Marc Zyngier
2019-07-25 15:35 ` [PATCH v3 01/10] KVM: arm/arm64: vgic: Add LPI translation cache definition Marc Zyngier
2019-07-25 15:35 ` [PATCH v3 02/10] KVM: arm/arm64: vgic: Add __vgic_put_lpi_locked primitive Marc Zyngier
2019-07-25 15:35 ` [PATCH v3 03/10] KVM: arm/arm64: vgic-its: Add MSI-LPI translation cache invalidation Marc Zyngier
2019-07-25 15:35 ` [PATCH v3 04/10] KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on specific commands Marc Zyngier
2019-07-25 15:35 ` [PATCH v3 05/10] KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on disabling LPIs Marc Zyngier
2019-07-25 16:38 ` Auger Eric
2019-07-25 15:35 ` Marc Zyngier [this message]
2019-07-25 16:38 ` [PATCH v3 06/10] KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on ITS disable Auger Eric
2019-07-25 15:35 ` [PATCH v3 07/10] KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on vgic teardown Marc Zyngier
2019-07-25 16:37 ` Auger Eric
2019-07-25 15:35 ` [PATCH v3 08/10] KVM: arm/arm64: vgic-its: Cache successful MSI->LPI translation Marc Zyngier
2019-07-25 15:35 ` [PATCH v3 09/10] KVM: arm/arm64: vgic-its: Check the LPI translation cache on MSI injection Marc Zyngier
2019-07-25 16:38 ` Auger Eric
2019-07-25 15:35 ` [PATCH v3 10/10] KVM: arm/arm64: vgic-irqfd: Implement kvm_arch_set_irq_inatomic Marc Zyngier
2019-07-30 17:04 ` [PATCH v3 00/10] KVM: arm/arm64: vgic: ITS translation cache Andre Przywara
2019-08-18 17:55 ` Marc Zyngier
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