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Re: [Xen-devel] pvgrub2 for ARM

From: Bamvor Jian Zhang
Subject: Re: [Xen-devel] pvgrub2 for ARM
Date: Wed, 06 Nov 2013 19:48:13 -0700

 >>>Ian Campbell <address@hidden> wrote: 
> On Wed, 2013-11-06 at 14:00 +0100, Vladimir 'φ-coder/phcoder' Serbinenko 
> wrote: 
> > Hello, all. I've ported grub2 to x86_64-xen and i386-xen (PAE only). How 
> > big is the difference between ARM and i386 when seen as pv guest? 
> Very. Xen on ARM uses hardware functionality for second stage paging, so 
> there is far less porting to do. 
> > I have an ARM here but it's a raspberry pi, so no support for xen. Are  
> there 
> > machines for under $100 on which xen runs? 
> The current platforms are listed on 
> The one 
> which is sub $100 is the Allwinner sunxi based stuff. The native Linux 
> support is community driven by the folks and is 
> progressing nicely. 
> I've got a cubieboard2 (A20 based, <$100) which is a promising platform.
How about cubietruck? 2G memory plus 1G network is better than cb2. it is
about 90$.
> I've mostly been trying to get (native) SATA going, so my Xen
> experiments are a bit lightweight, but it does boot. Bamvor has reported
> success with using the MMC and documented it on the wiki. I think he's
> using an A31 based STB of some sort.
i use the NFS as root not the MMC, and the usb storage should work but no
lucky for me. i test these on A20 STB(mele A100 Dual, only 40$!!)

> > What's with 64-bit ARM? 
> TBH I thought the GRuB On ARM stuff was mainly targeting 64-bit (at 
> least within Linaro). Do you have native grub on 32-bit ARM already 
> then? 
> As far as 64-bit hardware goes you will have a struggle finding any at 
> all right now, nevermind for under $100. 
> We should at some point be able to support the freely (as in beer) 
> available Foundation model, but we don't right now. 
> > Alternatively, I'll probably go for Google HP chromebook 11. 
> I don;t know about this one, but previous chromebooks have proved a pain 
> to get Xen onto, too hard to debug anything on them... 
> > Or may I have access to some server where I'd be able to run VMs with my 
> > kernel (GRUB) and HDD? 
> I'm afraid we don't here at least. 
> Ian. 
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