Re: [Qemu-devel] [PATCH] Fix segfault with ram_size > 4095M without kvm

[Anthony Liguori]

On 02/23/2010 02:30 PM, Alexander Graf wrote:
> On 23.02.2010, at 18:02, Aurelien Jarno wrote:
>
>    
> > Ryan Harper a écrit :
> >      
> > > Currently, x86_64-softmmu qemu segfaults when trying to use>  4095M memsize.
> > > This patch adds a simple check and error message (much like the 2047 limit on
> > > 32-bit hosts) on ram_size in the control path after we determine we're
> > > not using kvm
> > >
> > > Upstream qemu-kvm is affected if using the -no-kvm option; this patch address
> > > the segfault there as well.
> > >        
> > It looks like workarounding the real bug. At some point both
> > i386-softmmu (via PAE) and x86_64-softmmu were able to support>  4GB of
> > memory. I remember adding the support long time ago, and testing it with
> > 32GB of emulated RAM.
> >      
> Sounds like a perfect candidate for -stable then. For HEAD I agree that finding 
> the cause would be the way to go.
>    

No, it's wrong.  A good candidate for -stable would be something that 
fixes the SEGV :-)

Regards,

Anthony Liguori

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