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

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));
}
}