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Re: [Qemu-arm] [Qemu-devel] [PATCH v2 3/4] hw/arm/virt: Declare fwcfg as
From: |
Shannon Zhao |
Subject: |
Re: [Qemu-arm] [Qemu-devel] [PATCH v2 3/4] hw/arm/virt: Declare fwcfg as dma cache coherent in ACPI |
Date: |
Fri, 10 Feb 2017 10:49:52 +0800 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 |
On 2017/2/9 20:53, Alexander Graf wrote:
> 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 <address@hidden>
> ---
> hw/arm/virt-acpi-build.c | 1 +
> 1 file changed, 1 insertion(+)
>
Reviewed-by: Shannon Zhao <address@hidden>
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 8955a9d..0835e59 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,
>
--
Shannon
- [Qemu-arm] [PATCH v2 0/4] target-arm: Add some omitted dma cache coherency flags, Alexander Graf, 2017/02/09
- [Qemu-arm] [PATCH v2 2/4] hw/arm/virt: Declare virtio-mmio as dma cache coherent in ACPI, Alexander Graf, 2017/02/09
- [Qemu-arm] [PATCH v2 4/4] hw/arm/virt: Declare fwcfg as dma cache coherent in dt, Alexander Graf, 2017/02/09
- [Qemu-arm] [PATCH v2 3/4] hw/arm/virt: Declare fwcfg as dma cache coherent in ACPI, Alexander Graf, 2017/02/09
- Re: [Qemu-arm] [Qemu-devel] [PATCH v2 3/4] hw/arm/virt: Declare fwcfg as dma cache coherent in ACPI,
Shannon Zhao <=
- [Qemu-arm] [PATCH v2 1/4] target-arm: Declare virtio-mmio as dma-coherent in dt, Alexander Graf, 2017/02/09
- Re: [Qemu-arm] [PATCH v2 0/4] target-arm: Add some omitted dma cache coherency flags, Laszlo Ersek, 2017/02/09
- Re: [Qemu-arm] [PATCH v2 0/4] target-arm: Add some omitted dma cache coherency flags, Ard Biesheuvel, 2017/02/09
- Re: [Qemu-arm] [PATCH v2 0/4] target-arm: Add some omitted dma cache coherency flags, Peter Maydell, 2017/02/10