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

Anthony Liguori
2010-02-23T21:07:24Z

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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