From: Alexander Graf <agraf@suse.de>
To: qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org, mst@redhat.com,
Laszlo Ersek <lersek@redhat.com>,
Shannon Zhao <shannon.zhao@linaro.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [Qemu-devel] [PATCH v2 3/4] hw/arm/virt: Declare fwcfg as dma cache coherent in ACPI
Date: Thu, 9 Feb 2017 13:53:29 +0100 [thread overview]
Message-ID: <1486644810-33181-4-git-send-email-agraf@suse.de> (raw)
In-Reply-To: <1486644810-33181-1-git-send-email-agraf@suse.de>
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>
---
hw/arm/virt-acpi-build.c | 1 +
1 file changed, 1 insertion(+)
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,
--
2.10.0
next prev parent reply other threads:[~2017-02-09 12:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-09 12:53 [Qemu-devel] [PATCH v2 0/4] target-arm: Add some omitted dma cache coherency flags Alexander Graf
2017-02-09 12:53 ` [Qemu-devel] [PATCH v2 1/4] target-arm: Declare virtio-mmio as dma-coherent in dt Alexander Graf
2017-02-09 12:53 ` [Qemu-devel] [PATCH v2 2/4] hw/arm/virt: Declare virtio-mmio as dma cache coherent in ACPI Alexander Graf
2017-02-10 2:49 ` Shannon Zhao
2017-02-09 12:53 ` Alexander Graf [this message]
2017-02-10 2:49 ` [Qemu-devel] [PATCH v2 3/4] hw/arm/virt: Declare fwcfg " Shannon Zhao
2017-02-09 12:53 ` [Qemu-devel] [PATCH v2 4/4] hw/arm/virt: Declare fwcfg as dma cache coherent in dt Alexander Graf
2017-02-09 13:15 ` [Qemu-devel] [PATCH v2 0/4] target-arm: Add some omitted dma cache coherency flags Laszlo Ersek
2017-02-09 18:13 ` Michael S. Tsirkin
2017-02-09 18:27 ` Alexander Graf
2017-02-09 20:28 ` Laszlo Ersek
2017-02-09 17:51 ` Ard Biesheuvel
2017-02-10 15:02 ` [Qemu-devel] [Qemu-arm] " Peter Maydell
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