Re: [Xen-devel] Status of 4.13

[Jan Beulich <jbeulich@xxxxxxxx>]

On 21.11.2019 07:05, Jürgen Groß wrote:
> Where do we stand with Xen 4.13 regarding blockers and related patches?
> 
> 1. OSStest failure regarding nested test:
>     I'm not quite sure whether the currently debated patch of Andrew is
>     fixing the problem. If not, do we know what is missing or how to
>     address the issue? If yes, could we please come to an agreement?
>     As an alternative: any thoughts about ignoring this test failure for
>     4.13-RC3 (IOW: doing a force push)?

I'd recommend against doing so, in particular seeing that all stable
trees are also affected.

Andrew's patch may end up being a prereq to the full fix, but this
looks to not be entirely clear yet at this point. (I'm having a
hard time seeing a fair solution without this change.)

> 2. Ryzen/Rome failures with Windows guests:
>     What is the currently planned way to address the problem? Who is
>     working on that?
> 
> 3. Pending patches for 4.13:
>     Could I please have feedback which patches tagged as "for-4.13" are
>     fixing real regressions or issues? I don't want to take any patches
>     not fixing real problems after RC3, and I hope to be able to get a
>     push rather sooner than later to be able to let Ian cut RC3.

According to my list it's
AMD/IOMMU: re-work mode updating [regression]
build: provide option to disambiguate symbol names [issue]
x86/vmx: always sync PIR to IRR before vmentry [issue]

The last one, according to my records, will need at least one more
revision.

Andrew did also indicate he'd see "x86: explicitly disallow guest
access to PPIN" as something that should go in for 4.13, but there
looks to have been too little attention/progress there.

> 4. Are there any blockers for 4.13 other than 1. and 2. (apart of any
>     pending XSAs)?

"Latest development (master) Xen fails to boot on HP ProLiant DL20 GEN10"

Jan

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