Re: QEMU 6.0+ in 4.15 and 4.14 (Re: preparations for 4.15.1 and 4.13.4)

[Olaf Hering <olaf@xxxxxxxxx>]

Am Thu, 19 Aug 2021 17:23:26 +0100
schrieb Ian Jackson <iwj@xxxxxxxxxxxxxx>:

> Anthony PERARD writes ("Re: preparations for 4.15.1 and 4.13.4"):
> > Also, Olaf want them to be backported to 4.14, see
> >     <20210629095952.7b0b94c1.olaf@xxxxxxxxx>  
> I'm unsure about this.  The diff seems moderately large.  Also, are we
> sure that it wouldn't break anything other than very old qemu ?  OTOH
> compat problems with newer qemu are indeed a problem especially for
> distros.

libxl in 4.14 and 4.15 is nearly identical.
It would reduce the amount of changes for Xen in Leap 15.3.
SUSE uses a separate qemu binary since a few years, in case of 15.3 it happens 
to be qemu-5.2. 
This variant of qemu removed "cpu-add", as a result cpu hotplug with HVM fails.

Olaf

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