[Qemu-devel] [PULL 08/12] hw/arm/virt: Declare fwcfg as dma cache coherent in dt

[Peter Maydell]

From: Alexander Graf <address@hidden>

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 DT.

Signed-off-by: Alexander Graf <address@hidden>
Reviewed-by: Laszlo Ersek <address@hidden>
Reviewed-by: Ard Biesheuvel <address@hidden>
Reviewed-by: Shannon Zhao <address@hidden>
Message-id: address@hidden
Signed-off-by: Peter Maydell <address@hidden>
---
 hw/arm/virt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index d20e627..f3440f2 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -929,6 +929,7 @@ static FWCfgState *create_fw_cfg(const VirtMachineState 
*vms, AddressSpace *as)
                             "compatible", "qemu,fw-cfg-mmio");
     qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg",
                                  2, base, 2, size);
+    qemu_fdt_setprop(vms->fdt, nodename, "dma-coherent", NULL, 0);
     g_free(nodename);
     return fw_cfg;
 }
-- 
2.7.4