Re: [Qemu-devel] using qemu arm bring up 2 cpus on x86, hang up on guest file system

[Wangkai (Kevin,C)]

> -----Original Message-----
> From: Peter Maydell [mailto:address@hidden
> Sent: Saturday, November 01, 2014 1:07 AM
> To: Wangkai (Kevin,C)
> Cc: address@hidden; Lee yang
> Subject: Re: [Qemu-devel] using qemu arm bring up 2 cpus on x86, hang
> up on guest file system
> 
> On 31 October 2014 03:46, Wangkai (Kevin,C) <address@hidden>
> wrote:
> > Hi all,
> > I am using qemu-system-arm emulate armv7 with 2 cpus on x86_64 host,
> > when I do the command tar -xf xxx.tar or rm -r xxx, after a while,
> Guest system hang up on file system:
> >
> > When mmc request a block, that cannot receive a request done event,
> it seems request done irq loss.
> > After I change the cpu to single core, the problem was solved.
> >
> > Is there some problem on qemu multi-core emulation?
> 
> I forget if we have fixed any bugs on the 32 bit SMP emulation recently.
> I suggest trying a current QEMU master build, though, to see if your
> problem has been fixed.
> 
> Note that emulating more than one guest core is always going to be
> slower than a "-smp 1" configuration if you're not using KVM, though,
> so often it's better to just use -smp 1 anyway.
> 
> -- PMM
[Wangkai (Kevin,C)] 

I have got the master branch of QEMU, and tried several times, it was fine.
The problem may be fixed. Thank you.