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qemuarm: Disable highmem when QB_MACHINE is virt

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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

(From OE-Core rev: 4486f4523f6671841ffa65ce2419b9e3e018ad76)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Khem Raj
2020-02-13 00:21:50 -08:00
committed by Richard Purdie
parent 5fd3eb4bda
commit 84baf77027
1 changed files with 1 additions and 1 deletions
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2
meta/conf/machine/qemuarm.conf
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@@ -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"