hw/arm/virt: Declare virtio-mmio as dma cache coherent in ACPI
Virtio-mmio devices can directly access guest memory and do so in cache coherent fashion. Tell the guest about that fact when it's using ACPI. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Shannon Zhao <shannon.zhao@linaro.org> Message-id: 1486644810-33181-3-git-send-email-agraf@suse.de Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -135,6 +135,7 @@ static void acpi_dsdt_add_virtio(Aml *scope,
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Aml *dev = aml_device("VR%02u", i);
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aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
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aml_append(dev, aml_name_decl("_UID", aml_int(i)));
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aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
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Aml *crs = aml_resource_template();
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aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
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