Re: [Qemu-devel] [REBASE PATCH v5 1/2] machine: add default_ram_size to machine class

[Alexander Graf]

On 30.04.15 06:41, Nikunj A Dadhania wrote:
> 
> Hi Paolo,
> 
> Paolo Bonzini <address@hidden> writes:
>> On 29/04/2015 11:06, Nikunj A Dadhania wrote:
>>>> so David can push both patches.
>>>>
>>>> But isn't 1G a bit too much?  At least on x86 you can easily boot with 
>>>> 512M.
>>>
>>> I understood this number as not the _minimum memory_ to boot the
>>> VM. And this will only come in picture when the user has not specified
>>> any memory.
>>
>> This in turn will basically only happen for QEMU developers.  So keeping
>> the default on the low side would make sense.
>>
>> On my (4G memory) laptop I might not even be able to boot a PPC64 VM
>> with 1G and TCG, but I can do that nicely with 256M.
> 
> That will be fine with me as well, i.e. 256M
> 
> David/Alex, Do you have comments on this before we change it?

I've seen RAM size combinations that seemed to work ok, but then failed
during grub2 execution for example. Please verify with all reasonably
realistically executed distributions that 256MB is enough.


Alex