[OE-core] [PATCH 2/2] scripts/runqemu: fix qemumips64 with 512M RAM caused kernel panic

[Hongxu Jia]

$ runqemu qemumips64 core-image-minimal nographic qemuparams="-m 512"
...
[    0.000000] Call Trace:
[    0.000000] [<ffffffff801268c0>] clear_page+0x0/0x128
[    0.000000] [<ffffffff80238158>] get_page_from_freelist+0xab8/0xc00
[    0.000000] [<ffffffff80238964>] __alloc_pages_nodemask+0xdc/0xf68
[    0.000000] [<ffffffff80239808>] __get_free_pages+0x18/0x70
[    0.000000] [<ffffffff80122a4c>] setup_zero_pages+0x1c/0xb8
[    0.000000] [<ffffffff80c7c998>] mem_init+0x54/0xa0
[    0.000000] [<ffffffff80c74904>] start_kernel+0x204/0x4d8
[    0.000000] [<ffffffff8091dfb0>] kernel_entry+0x0/0x40
[    0.000000] Code: 02002025  1000f8d9  8e634d7c <34860f80> cc9e0000
cc9e0020  cc9e0040  cc9e0060  cc9e0080
[    0.000000]
[    0.000000] ---[ end trace 0000000000000000 ]---
[    0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
[    0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task!
...

Remove `mem=*' to disable user-defined physical RAM map which
let kernel itself caculates memory ranges.

Signed-off-by: Hongxu Jia <hongxu.jia at windriver.com>
---
 scripts/runqemu | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/runqemu b/scripts/runqemu
index 0ae2f85..0c90ca7 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -659,7 +659,7 @@ class BaseConfig(object):
             self.set('QB_MEM', '-m 512')
 
         mach = self.get('MACHINE')
-        if mach != 'qemumips':
+        if mach != 'qemumips' and mach != 'qemumips64':
             self.kernel_cmdline_script += ' mem=%s' % self.get('QB_MEM').replace('-m','').strip() + 'M'
 
         self.qemu_opt_script += ' %s' % self.get('QB_MEM')
-- 
2.8.1