Re: [Xen-devel] [PATCH RFC] Add SUPPORT.md\

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Sep 07, 2017 at 02:52:49PM +0100, George Dunlap wrote:
> On 09/01/2017 04:00 PM, Wei Liu wrote:
> > On Thu, Aug 31, 2017 at 11:27:19AM +0100, George Dunlap wrote:
> >> +### Direct-boot kernel image format
> >> +
> >> +    Supported, x86: bzImage
> > 
> > Do you mean booting a PV guest? If so there are a few more formats.
> > 
> >> +    Supported, ARM32: zImage
> >> +    Supported, ARM64: Image [XXX - Not sure if this is correct]
> >> +
> >> +Format which the toolstack accept for direct-boot kernels
> > [...]
> >> +### JSON support for xl
> >> +
> >> +    Status: Preview
> >> +
> > 
> > What is this?
> 
> JSON output; e.g., `xl list -l`.
> 
> Perhaps this should be called 'JSON output support'. :-)
> 

OK. Anyway, no security support for this please. I'm not even very sure
if the output is going to be stable.

> >> +### AHCI support for xl
> >> +
> >> +    Status, x86: Supported
> >> +
> > 
> > There is only one knob to change, I'm not sure whether makes sense to
> > list it separately.
> > 
> >> +### Soft-reset for xl
> >> +
> >> +    Status: Supported
> >> +
> > 
> > We never tested this in osstest so I'm not sure about if this is the
> > correct status. Furthermore there is also moving parts in hypervisor.
> 
> Hmm, maybe this would go better under a hypervisor section somewhere; as
> you say, the core functionality doesn't reside in xl, xl just enables it.
> 

A bit more than that, there are moving parts in libxl to handle that as
well -- some initialisation needs to be skipped or whatever, some can't.

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