diff options
| author | Alexander Graf <agraf@suse.de> | 2017-02-10 17:40:29 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-02-10 17:40:29 +0000 |
| commit | 3b5c492b1c728f90b17520be74c4d74c9797c55c (patch) | |
| tree | 9911311afbf4f0b644ab75f8cc422c7bc3fdd755 | |
| parent | 76266d9913961922415ce46b628e4ad706a1ef08 (diff) | |
hw/arm/virt: Declare fwcfg as dma cache coherent in ACPI
Fw-cfg recently learned how to directly access guest memory and does 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: 1486644810-33181-4-git-send-email-agraf@suse.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | hw/arm/virt-acpi-build.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 8955a9d384..0835e59bb2 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -90,6 +90,7 @@ static void acpi_dsdt_add_fw_cfg(Aml *scope, const MemMapEntry *fw_cfg_memmap) aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002"))); /* device present, functioning, decoding, not shown in UI */ aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); + aml_append(dev, aml_name_decl("_CCA", aml_int(1))); Aml *crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(fw_cfg_memmap->base, |