Re: [Xen-devel] Tagging Xen 4.0.0 first release candidate

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 05/01/2010 16:00, "Alex Williamson" <alex.williamson@xxxxxx> wrote:

>> It's a bit late for 4.0.0 really. The lack of interest is probably the lack
>> of people hitting the 43-bit limitation built into the current interface.
>> Just about noone is anywhere near close to it.
> 
> Perhaps due to the lack of x86 processors supporting more than 40-bits
> of physical address space that are currently on the market.  But we
> know that's going to change fairly shortly and x86 will finally get
> support for more than 1TB.  That opens the doors for hardware vendors
> to create interesting configurations and maybe not worry so much about
> compressing the address space into a contiguous block.  If Xen can't
> support at least a 44-bit physical address space within the 4.x
> lifetime, it could become a serious limiting factor.  It seems rather
> shortsighted not to prepare for it now, especially given the
> opportunity we have at a major version break.  Thanks,

If it's considered important we can hold up until next week.

 -- Keir



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