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Re: [Xen-devel] Xen 4.3 development update, and stock-taking

On 17/01/13 09:09, Jan Beulich wrote:
On 16.01.13 at 18:55, George Dunlap <George.Dunlap@xxxxxxxxxxxxx> wrote:
* Persistent grants for blk (external)
   owner: roger.pau@citrix
   status: Initial implementation posted
   prognosis: ?
I think this went into 3.8-rc.

Ah, great.

* Scalability: 16TiB of RAM
   owner: jan@suse
   status: Not started
Patches almost ready to be posted (working fine for "normal"
mode, but working on simulating the mode we'd be in when
having this much of memory).

Prognosis: Good.

Good, I'll update that.

* Remove hardcoded mobprobe's in xencommons
   owner: ?
   status: ?
   prognosis: Poor.
This was actually _promised_ to be a temporary hack, so I'd
consider it a release blocker if nothing at all was done here.

I agree. But I thought it would be useful *first* to have a clear list of where everything is. Then when we know what's at-risk, we can decide which things are critical / blockers and have a call to action.

* Xen EFI boot
  - Signature checking for dom0 kernel / initrd?
  status: No owner.
  prognosis: Probably not for 4.4
This is already in the tree (c/s 26262:b62bd62b2683). Nothing else
should be necessary on the hypervisor side if the shim is to be used.

But of course pv-ops Linux continues to lack EFI support altogether.

OK, so I think the description needs an update, then. For Xen to be fully featured, I think it would need all of the following:
* An EFI-bootable dom0 (this should be done, right?)
* dom0 able to make use of EFI run-time services
* Xen able to use EFI boot-time services (?)
* Xen able to detect the existence of a signed Linux binary, and leave EFI boot-time services enabled for dom0 to use when appropriate
* dom0 able to use boot-time EFI services and disable them when done

Are any of these that should be blockers for 4.3?


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