[OE-core] [PATCH 2/4] qemu: set default RAM to 256M for all machines

[Alexander Kanavin]

There was a discussion about what amount of RAM is appropriate for a
default; the outcome was that for now it is still 256M. Some qemu machine
definitions have however set this to 512M so for the sake of
treating all architectures fairly, they are reset back to 256M.

Also runqemu is adjusted to use 256M if QB_MEM is not set at all.

http://lists.openembedded.org/pipermail/openembedded-core/2019-August/285900.html

Signed-off-by: Alexander Kanavin <alex.kanavin at gmail.com>
---
 meta/conf/machine/include/qemuboot-mips.inc   | 1 -
 meta/conf/machine/include/riscv/qemuriscv.inc | 1 -
 meta/conf/machine/qemuarm.conf                | 1 -
 meta/conf/machine/qemuarm64.conf              | 1 -
 scripts/runqemu                               | 4 ++--
 5 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/meta/conf/machine/include/qemuboot-mips.inc b/meta/conf/machine/include/qemuboot-mips.inc
index a5f9ed821f4..1c2b532b482 100644
--- a/meta/conf/machine/include/qemuboot-mips.inc
+++ b/meta/conf/machine/include/qemuboot-mips.inc
@@ -1,6 +1,5 @@
 # For runqemu
 IMAGE_CLASSES += "qemuboot"
-QB_MEM = "-m 256"
 QB_MACHINE = "-machine malta"
 QB_KERNEL_CMDLINE_APPEND = "console=ttyS0 console=tty"
 QB_OPT_APPEND = "-vga cirrus -show-cursor -usb -device usb-tablet"
diff --git a/meta/conf/machine/include/riscv/qemuriscv.inc b/meta/conf/machine/include/riscv/qemuriscv.inc
index f1cb62818b7..952779e98e8 100644
--- a/meta/conf/machine/include/riscv/qemuriscv.inc
+++ b/meta/conf/machine/include/riscv/qemuriscv.inc
@@ -24,7 +24,6 @@ UBOOT_ENTRYPOINT_riscv64 = "0x80200000"
 
 # qemuboot options
 QB_KERNEL_CMDLINE_APPEND = "earlycon=sbi"
-QB_MEM = "-m 512"
 QB_MACHINE = "-machine virt"
 QB_DEFAULT_BIOS = "fw_jump.elf"
 QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"
diff --git a/meta/conf/machine/qemuarm.conf b/meta/conf/machine/qemuarm.conf
index 0a2c9953125..26f40b14194 100644
--- a/meta/conf/machine/qemuarm.conf
+++ b/meta/conf/machine/qemuarm.conf
@@ -11,7 +11,6 @@ SERIAL_CONSOLES ?= "115200;ttyAMA0 115200;hvc0"
 
 # For runqemu
 QB_SYSTEM_NAME = "qemu-system-arm"
-QB_MEM = "-m 512"
 QB_MACHINE = "-machine virt"
 QB_CPU = "-cpu cortex-a15"
 # Standard Serial console
diff --git a/meta/conf/machine/qemuarm64.conf b/meta/conf/machine/qemuarm64.conf
index 353ac927d94..ec2a887bddf 100644
--- a/meta/conf/machine/qemuarm64.conf
+++ b/meta/conf/machine/qemuarm64.conf
@@ -11,7 +11,6 @@ SERIAL_CONSOLES ?= "115200;ttyAMA0 115200;hvc0"
 
 # For runqemu
 QB_SYSTEM_NAME = "qemu-system-aarch64"
-QB_MEM = "-m 512"
 QB_MACHINE = "-machine virt"
 QB_CPU = "-cpu cortex-a57"
 QB_CPU_KVM = "-cpu host"
diff --git a/scripts/runqemu b/scripts/runqemu
index e9b83737cbf..7705b2b60e3 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -755,8 +755,8 @@ class BaseConfig(object):
         if s:
             self.set('QB_MEM', '-m %s' % s.group(1))
         elif not self.get('QB_MEM'):
-            logger.info('QB_MEM is not set, use 512M by default')
-            self.set('QB_MEM', '-m 512')
+            logger.info('QB_MEM is not set, use 256M by default')
+            self.set('QB_MEM', '-m 256')
 
         # Check and remove M or m suffix
         qb_mem = self.get('QB_MEM')
-- 
2.17.1