qemuarm: Disable highmem when QB_MACHINE is virt

running ptests on qemuarm returns fails since it finds errors in kernel
logs like below

***********************
Central error: [    4.338465] pci-host-generic 4010000000.pcie: ECAM ioremap failed
***********************

Since its a 32bit kernel 4010000000 address is truncated to 10000000 and ends up
in conflicts with VIRT_PCIE_MMIO, which ranges from 0x10000000 to 0x3efeffff

This is happening because the linux-yocto kernel is not compiled with
LPAE support, however, virt machine for qemuarm assumes that by default

Should LPAE be enabled by default in kernel config is a separate
question

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/conf/machine/qemuarm.conf b/meta/conf/machine/qemuarm.conf
index 26f40b14194aab466bef1c86e5260261d8265aed..367fcef01922fa9f73073fff8c778f6c41ccf31b 100644 (file)
--- a/meta/conf/machine/qemuarm.conf
+++ b/meta/conf/machine/qemuarm.conf
@@ -11,7 +11,7 @@ SERIAL_CONSOLES ?= "115200;ttyAMA0 115200;hvc0"
 
 # For runqemu
 QB_SYSTEM_NAME = "qemu-system-arm"
-QB_MACHINE = "-machine virt"
+QB_MACHINE = "-machine virt,highmem=off"
 QB_CPU = "-cpu cortex-a15"
 # Standard Serial console
 QB_KERNEL_CMDLINE_APPEND = "console=ttyAMA0"