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KVM: arm/arm64: vgic-v2: Clear all dirty LRs

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When saving the state of the list registers, it is critical to
reset them zero, as we could otherwise leave unexpected EOI
interrupts pending for virtual level interrupts.

Cc: stable@vger.kernel.org # v4.6+
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Christoffer Dall 2016-05-25 15:26:33 +01:00
parent 1a695a905c
commit 4d3afc9bad
1 changed files with 3 additions and 4 deletions
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7
virt/kvm/arm/hyp/vgic-v2-sr.c
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@ -100,12 +100,11 @@ static void __hyp_text save_lrs(struct kvm_vcpu *vcpu, void __iomem *base)
if (!(vcpu->arch.vgic_cpu.live_lrs & (1UL << i)))
continue;
if (cpu_if->vgic_elrsr & (1UL << i)) {
if (cpu_if->vgic_elrsr & (1UL << i))
cpu_if->vgic_lr[i] &= ~GICH_LR_STATE;
continue;
}
else
cpu_if->vgic_lr[i] = readl_relaxed(base + GICH_LR0 + (i * 4));
cpu_if->vgic_lr[i] = readl_relaxed(base + GICH_LR0 + (i * 4));
writel_relaxed(0, base + GICH_LR0 + (i * 4));
}
}