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acpi: ich9: allow guest to clear SCI rised by GPE
it fixes IRQ storm since guest isn't able to lower SCI IRQ after it has been handled when it clears GPE event. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -61,6 +61,7 @@ static void ich9_gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
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{
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ICH9LPCPMRegs *pm = opaque;
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acpi_gpe_ioport_writeb(&pm->acpi_regs, addr, val);
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acpi_update_sci(&pm->acpi_regs, pm->irq);
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}
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static const MemoryRegionOps ich9_gpe_ops = {
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